Identification_Information: Citation: Citation_Information: Originator: Marci E. Marot Originator: Cathryn J. Wheaton Publication_Date: 20170628 Title: Sedimentary Data Collected in August 2015 From Old Tampa Bay, Florida (U.S. Geological Survey Field Activity Number 2015–329–FA) Geospatial_Data_Presentation_Form: Multimedia presentation Larger_Work_Citation: Citation_Information: Originator: Marci E. Marot Originator: Cathryn J. Wheaton Originator: Christopher G. Smith Publication_Date: 20170628 Title: Seasonal Sedimentary Data Collected From Old Tampa Bay, Florida, 2015-2016 Geospatial_Data_Presentation_Form: Multimedia presentation Series_Information: Series_Name: U.S. Geological Survey Data Release Issue_Identification: doi:10.5066/F7K64G99 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F7K64G99 Description: Abstract: The toxic dinoflagellate Pyrodinium bahamense (P. bahamense) produces recurring, persistent summer algal blooms in Old Tampa Bay, Florida, which degrade water quality and are potentially harmful to humans if contaminated shellfish is consumed. As part of its life cycle, P. bahamense produces dormant cysts, which settle to the seafloor, forming seed beds that may initiate future blooms if favorable conditions for germination occur. From August 2015 to September 2016, the U. S. Geological Survey (USGS) and Florida Fish and Wildlife Conservation Commission (FWC) collaborated to conduct seasonal sediment sampling at in Old Tampa Bay, Florida. Sediment cores were collected at three sites. The USGS characterized bottom sediment texture and measured profiles of naturally-occurring radionuclides in the uppermost five centimeters of the sediment column. This information will provide an assessment of sediment accumulation, depositional focusing, and resuspension in relation to the potential impact on the seeding potential of P. bahamense cysts. This data will be used in conjunction with FWC research on the vertical distribution of cyst abundance and viability to estimate the seeding potential of future blooms (Lopez and others, 2015). This project was funded by the Tampa Bay Environmental Restoration Fund. This data release is an archive of USGS field data and laboratory analytical results for the five sampling periods in this study, designated as USGS Field Activity Numbers 2015-329-FA (project ID 15FWR02), 2015-341-FA (project ID 15FWR03), 2016-312-FA (project ID 16FWR04), 2016-327-FA (project ID 16FWR05), and 2016-350-FA (project ID 16FWR06). Purpose: Dissemination of processed sediment data from sediment core intervals collected from three sites in Old Tampa Bay, Florida, in August 2015 (USGS FAN 2015-329-FA). Supplemental_Information: To ensure that USGS-St. Petersburg data management protocols were followed, this survey was assigned the following USGS field activity number (FAN): 2015-329-FA (Project ID 15FWR02). On August 26, 2015, USGS scientists collected four sediment push cores from three unique sites in Old Tampa Bay, a segment of the larger Tampa Bay estuary. During field sampling, ancillary water quality measurements were collected at each site, which are included in this report. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20150826 Ending_Date: 20150826 Currentness_Reference: Ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -82.67505 East_Bounding_Coordinate: -82.67290 North_Bounding_Coordinate: 28.02010 South_Bounding_Coordinate: 27.94195 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:12345304-14e0-44fc-bd26-e3114fd602e7 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: location Theme_Keyword: biota Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geology Theme_Keyword: rocks and deposits Theme_Keyword: unconsolidated deposits Theme_Keyword: algae Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: sediment Theme_Keyword: estuaries Theme_Keyword: lithology Theme_Keyword: push core Theme_Keyword: bulk density Theme_Keyword: grain size Theme_Keyword: GRADISTAT Theme_Keyword: loss on ignition Theme_Keyword: radiochemistry Theme_Keyword: gamma spectroscopy Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Florida Place_Keyword: Old Tampa Bay Access_Constraints: None Use_Constraints: The U.S. Geological Survey requests that it be acknowledged as the originator of this dataset in any future products or research derived from these data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Marci E. Marot Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: mmarot@usgs.gov Data_Set_Credit: U.S. Geological Survey, Coastal and Marine Geology Program, St. Petersburg Coastal and Marine Science Center Native_Data_Set_Environment: Microsoft Windows 7 Enterprise Service Pack 1; Microsoft Excel Version 2010 Cross_Reference: Citation_Information: Originator: Blott, S.J. and Pye, K. Publication_Date: 2001 Title: Gradistat: A grain size distribution and statistics package for the analysis of unconsolidated sediments Edition: Version 8.0 Series_Information: Series_Name: Earth Surface Processes and Landforms Issue_Identification: Volume 26 Other_Citation_Details: Pages 1237-1248 Online_Linkage: http://www.kpal.co.uk/gradistat.html Cross_Reference: Citation_Information: Originator: Cutshall, N.H., Larsen, I.L., and Olsen, C.R. Publication_Date: 1983 Title: Direct analysis of 210Pb in sediment samples: self-absorption corrections Series_Information: Series_Name: Nuclear Instruments and Methods Issue_Identification: Volume 206 Other_Citation_Details: Pages 309-312 Online_Linkage: https://doi.org/10.1016/0167-5087(83)91273-5 Cross_Reference: Citation_Information: Originator: Cutshall, N.H. and Larsen, I.L. Publication_Date: 1986 Title: Calibration of a portable intrinsic Ge gamma-ray detector using point sources and testing for field applications Series_Information: Series_Name: Health Physics Issue_Identification: Volume 51 Other_Citation_Details: Pages 53-59 Online_Linkage: https://doi.org/10.1097/00004032-198607000-00004 Cross_Reference: Citation_Information: Originator: Lopez, C.B., Smith, C.G., Marot, M.E., Karlen, D.J, and Corcoran, A.A. Publication_Date: 2015 Title: The role of seedbeds in Pyrodinium bahamense bloom dynamics in Tampa Bay Series_Information: Series_Name: Proceedings, Tampa Bay Area Scientific Information Symposium Issue_Identification: BASIS 6 Other_Citation_Details: Pages 78-83 Online_Linkage: https://www.tbeptech.org/BASIS/BASIS6/BASIS6_Proceedings_FINAL.pdf Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The positional accuracy of the sample locations was determined by the accuracy of the Garmin GSPMAP 1040xs vessel-mounted Global Positioning System (GPS) receiver used to record the sample sites during the time of collection. Replicate analyses of loss on ignition are reported for quality assurance. The grain size data represent the sample averages for a subset of the statistical parameters calculated by GRADISTAT. The number of runs included in the averaged results are reported, and the standard deviation of the averaged results are reported for most parameters. The gamma spectroscopic radioisotope activities reported include the counting error for all samples. The critical level for gamma spectroscopy is reported for each core set. Logical_Consistency_Report: The grain-size sample runs in the GRADISTAT output files for which the mean Folk and Ward grain size varied from the set average by more than 1.5 standard deviations are highlighted in yellow and were not included in final averaged results. No formal logical accuracy tests were conducted on the remaining data sets. Completeness_Report: The data release doi:10.5066/F7K64G99 associated with this metadata includes the geographic location, field notes, water quality parameters, physical sediment properties, grain size, and sediment radiochemistry for four cores collected at three sites in Old Tampa Bay, Florida. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Sample locations were recorded at the time of collection using a Garmin GPSMAP 1040xs vessel-mounted GPS receiver located amidship of the 25-foot R/V Halimeda. The actual core sites were offset from the center of the boat by up to 10 feet. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Surface elevations of the sediment cores were determined as depth below water level. Lineage: Process_Step: Process_Description: At three stations in Old Tampa Bay, diver-assisted push cores were collected with 10.2-cm diameter polycarbonate barrels. Upon retrieval, the cores were visually inspected for an undisturbed sediment-water interface; cores with disturbed sediment surfaces were discarded and resampled. A replicate core was collected at Site TB01. Core lengths ranged between 20 and 30 cm. Cores accepted for analysis were wrapped in opaque plastic to prevent light penetration. The cores were transported upright to the SPCMSC laboratory for sectioning. Water quality properties were measured with an YSI Professional Plus multi-sensor meter at 1-meter water depth and at the base of the water column. Water column profiles of temperature, conductivity, and pressure were recorded with a SonTek Castaway-CTD sensor. Site coordinates were recorded on a vessel-mounted Garmin GPSMAP 1040xs Global Positioning (GPS) receiver. Site locations, YSI and CTD measurements are reported in Excel spreadsheets. Comma-separated values data files containing the tabular data in plain text are included in the download files. Process_Date: 2015 Source_Produced_Citation_Abbreviation: 15FWR02_FieldLogs.docx Source_Produced_Citation_Abbreviation: 15FWR02_SiteLocations.zip Source_Produced_Citation_Abbreviation: 15FWR02_WaterQualityParameters.zip Source_Produced_Citation_Abbreviation: 15FWR02_CTDProfiles.zip Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Marci E. Marot Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: mmarot@usgs.gov Process_Step: Process_Description: Within 24 hours of collection, all cores were vertically extruded and sectioned into 1-cm intervals at the USGS SPCMSC. The outer circumference of each interval was removed to avoid use of sediment that was in contact with the polycarbonate barrel. Each sediment interval was bagged and homogenized. Select intervals were immediately subsampled by scientists from the Florida Fish and Wildlife Conservation Commission for Pyrodinium bahamense cyst abundance (Lopez, unpublished data). Process_Date: 2015 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Marci E. Marot Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S. Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: mmarot@usgs.gov Process_Step: Process_Description: In the laboratory, a subsample of each 1-cm interval was processed for basic sediment characteristics (dry bulk density and porosity). Water content, porosity and dry bulk density were determined using water mass lost during drying. For each 1-cm interval, 20–80 milliliters (mL) of each wet subsample was packed into a graduated syringe with 0.5 mL resolution. The wet sediment was then extracted into a pre-weighed aluminum tray and the weight of the wet sediment and the volume was recorded. The wet sediment and tray were placed in a drying oven for a minimum of 48 hours at 60 degrees Celsius (°C). Water content (?) was determined as the mass of water (mass lost when dried) relative to the initial wet sediment mass. Dry bulk density was determined by ratio of dry sediment to the known volume of sediment packed into the syringe. Porosity was calculated from the equation ? = ? / [?+(1-?)/?s] where ?s is grain density assumed to be 2.5 grams per cubic centimeter (g/cm^3). Salt-mass contributions were removed based on the salinity measured at the time of sample collection. Water content, porosity and dry bulk density are reported in the Excel spreadsheet. A comma-separated values data file containing the tabular data in plain text is included in the download file. Process_Date: 2015 Source_Produced_Citation_Abbreviation: 15FWR02_SedimentPhysicalProperties.zip Source_Produced_Citation_Abbreviation: 15FWR02_DataPlots.jpg Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Marci E. Marot Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S. Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: mmarot@usgs.gov Process_Step: Process_Description: Organic matter content was determined with a mass loss technique, referred to as loss on ignition (LOI). The dry sediment from the previous process was homogenized with a porcelain mortar and pestle. Approximately 2.5-5 grams (g) of the dry sediment was placed into a pre-weighed porcelain crucible. The mass of the dried sediment was recorded. The sample was then placed inside a laboratory muffle furnace with stabilizing temperature control. The furnace was heated to 110°C for a minimum of 6 hours to remove hygroscopic water absorbed onto the sediment particles. The furnace temperature was then lowered to 60 °C, at which point the sediments could be reweighed. The dried sediment was returned to the muffle furnace. The furnace was heated to 550 °C over 30 minutes and kept at 550 °C for 6 hours. The furnace temperature was then lowered to 60 °C, and held at this temperature until the sediments could be reweighed. The latter step prevents the absorption of moisture, which can affect the measurement. The mass lost during the 6 hour baking period relative to the 110 °C-dried mass is used as a metric of organic matter content. Data are reported as a ratio of mass (g) of organic matter to mass (g) of dry sediment (post-110 °C drying). Replicate analyses of loss on ignition are reported for quality assurance in the Excel spreadsheet. A comma-separated values data file containing the tabular data in plain text is included in the download file. Process_Date: 2015 Source_Produced_Citation_Abbreviation: 15FWR02_SedimentPhysicalProperties.zip Source_Produced_Citation_Abbreviation: 15FWR02_DataPlots.jpg Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Marci E. Marot Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S. Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: mmarot@usgs.gov Process_Step: Process_Description: Prior to particle size analysis, organic material was chemically removed for the samples using 30% hydrogen peroxide (H2O2). Wet sediment was dissolved in H2O2 overnight. The H2O2 was then evaporated and the sediment washed and centrifuged twice with deionized water. Grain size analyses were completed on all sediment intervals from the surface to 10 cm depth. Grain size analyses on the sediment cores were performed using a Coulter LS200 (https://www.beckmancoulter.com/) particle-size analyzer, which uses laser diffraction to measure the size distribution of sediments ranging in size from 0.4 microns to 2 millimeters (mm) (clay to very coarse-grained sand). To prevent shell fragments from damaging the Coulter instrument, particles greater than 1 mm in diameter were separated from all samples prior to analysis using a number 18 (1000 microns or 1 mm) U.S. standard sieve, which meets the American Society for Testing and Materials (ASTM) E11 standard specifications for determining particle size using woven-wire test sieves. Two subsamples from each depth interval were processed through the instrument a minimum of four runs each. The sediment slurry was sonicated with a wand sonicator for 1 minute before being introduced into the Coulter LS200 to breakdown aggregated particles. The LS 200 measures the particle-size distribution of each sample by passing sediment suspended in solution between two narrow panes of glass in front of a laser. Light is scattered by the particles into characteristic refraction patterns measured by an array of photodetectors as intensity per unit area and recorded as relative volume for 92 size-related channels (bins). The size-classification boundaries for each bin were specified based on the ASTM E11 standard.? Process_Date: 2015 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Marci E. Marot Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: mmarot@usgs.gov Process_Step: Process_Description: The raw grain size data were then run through the free software program GRADISTAT (Blott and Pye, 2001; http://www.kpal.co.uk/gradistat), which calculates the mean, sorting, skewness, and kurtosis of each sample geometrically in metric units and logarithmically in phi units method. GRADISTAT also calculates the fraction of sediment from each sample by size category (for example, clay, coarse silt, fine sand). A macro function in Microsoft Excel, developed by the USGS SPCMSC, was applied to the data to calculate average and standard deviation for each sample set (8 runs per sample), and highlight runs that varied from the set average by more than ±1.5 standard deviations. Excessive deviations from the mean are likely the result of equipment error or extraneous organic material in the sample and are not considered representative of the sample. The highlighted runs were removed from the results and the sample average was recalculated using the remaining runs. The averaged results for all samples, including the number of averaged runs and the standard deviation of the averaged results were summarized in an of Excel workbook with each core on its own tab. A comma-separated values data file containing the tabular data in plain text is included in the download file. Process_Date: 2015 Source_Produced_Citation_Abbreviation: 15FWR02_GrainSize.zip Source_Produced_Citation_Abbreviation: 15FWR02_DataPlots.jpg Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Marci E. Marot Contact_Position: Geologist Contact_Address: Address_Type: Mailing and Physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: mmarot@usgs.gov Process_Step: Process_Description: Dried ground sediment from the uppermost five 1-cm intervals of each core were used for the detection of radionuclides by standard gamma-ray spectrometry (Cutshall and Larsen, 1986) at the USGS St. Petersburg radioisotope lab. The sediments (7-30 g) were sealed in airtight polypropylene containers. The sample weights and counting container geometries were matched to pre-determined calibration standards. The sealed samples sat for a minimum of 3 weeks to allow Ra-226 to come into secular equilibrium with its daughter isotopes Pb-214 and Bi-214. The sealed samples were then counted for 24-48 hours on a planar-style, low energy, high-purity germanium, gamma-ray spectrometer. The suite of naturally-occurring and anthropogenic radioisotopes measured along with their corresponding photopeak energies in kiloelectron volts (keV) are Pb-210 (46.5 keV), Th-234 (63.3 keV), Pb-214 (295.7 and 352.5 keV; proxies for Ra-226), Be-7 (477.6 keV), Bi-214 (609.3 keV; proxy for Ra-226), Cs-137 (661.6 keV), and K-40 (1640.8 keV). Following the initial count, the samples remained sealed in the counting jars for a minimum of 4 months to allow for decay of excess Th-234 activity (i.e. activity not supported by its parent U-238). Once sufficient time had passed, the samples were recounted for 24-48 hours. Sample count rates were corrected for detector efficiency determined with International Atomic Energy Agency RGU-1 reference material, standard photopeak intensity, and self-absorption using a U-238 sealed source (Cutshall and others, 1983). All activities were decay-corrected to the date of field collection. The radioisotopic activities reported in the Excel spreadsheet include the counting error for all samples. The critical level is reported for the sample set. A comma-separated values data file containing the tabular data in plain text is included in the download file. Process_Date: 2015 Source_Produced_Citation_Abbreviation: 15FWR02_GammaSpectroscopy.zip Source_Produced_Citation_Abbreviation: 15FWR02_DataPlots.jpg Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Marci E. Marot Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S. Contact_Voice_Telephone: (727) 502-8000 Contact_Electronic_Mail_Address: mmarot@usgs.gov Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20201013 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 15FWR02_SiteLocations.xlsx Entity_Type_Definition: Microsoft Excel workbook defining the station locations and water depth of sediment cores collected in Old Tampa Bay, Florida (USGS FAN 2015-329-FA). Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: 15FWR02_SiteLocations.csv Entity_Type_Definition: Comma-separated values text file defining the station locations and water depth of sediment cores collected in Old Tampa Bay, Florida (USGS FAN 2015-329-FA). Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: 15FWR02_WaterQualityParameters.xlsx Entity_Type_Definition: Microsoft Excel workbook listing the YSI water quality parameters at the site locations of sediment cores collected in Old Tampa Bay, Florida (USGS FAN 2015-329-FA). The results for each station location are provided on its own tab. Entity_Type_Definition_Source: YSI Detailed_Description: Entity_Type: Entity_Type_Label: 15FWR02_WaterQualityParameters.csv Entity_Type_Definition: Comma-separated values text file listing the YSI water quality parameters at the site locations of sediment cores collected in Old Tampa Bay, Florida (USGS FAN 2015-329-FA). Entity_Type_Definition_Source: YSI Detailed_Description: Entity_Type: Entity_Type_Label: 15FWR02_CTDProfiles.xlsx Entity_Type_Definition: Microsoft Excel workbook listing conductivity, temperature, depth, and associated water parameter profiles for the water column at the site locations of sediment cores collected in Old Tampa Bay, Florida (USGS FAN 2015-329-FA) recorded by a SonTek Castaway CTD. The results for each station location are provided on its own tab. Entity_Type_Definition_Source: SonTek Detailed_Description: Entity_Type: Entity_Type_Label: 15FWR02_CTDProfiles.csv Entity_Type_Definition: Comma-separated values text file listing conductivity, temperature, depth, and associated water parameter profiles for the water column at the site locations of sediment cores collected in Old Tampa Bay, Florida (USGS FAN 2015-329-FA) recorded by a SonTek Castaway CTD. Entity_Type_Definition_Source: SonTek Detailed_Description: Entity_Type: Entity_Type_Label: 15FWR02_SedimentPhysicalProperties.xlsx Entity_Type_Definition: Microsoft Excel workbook listing water content, porosity, bulk density and loss-on-ignition data for sediment cores collected in Old Tampa Bay, Florida (USGS FAN 2015-329-FA). The results for each core are provided on its own tab. Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: 15FWR02_SedimentPhysicalProperties.csv Entity_Type_Definition: Comma-separated values text file listing water content, porosity, bulk density and loss-on-ignition data for sediment cores collected in Old Tampa Bay, Florida (USGS FAN 2015-329-FA). Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: 15FWR02_GrainSize.xlsx Entity_Type_Definition: Microsoft Excel workbook summarizing grain-size parameters for the uppermost ten 1-cm depth intervals from sediment cores collected in Old Tampa Bay, Florida (USGS FAN 2015-329-FA). The averaged results for each sample, including the number of runs used, the standard deviation of the averaged results, and graphical class-size distributions, are provided for each core on its own tab. Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: 15FWR02_GrainSize.csv Entity_Type_Definition: Comma-separated values text file summarizing grain-size parameters for the uppermost ten 1-cm depth intervals from sediment cores collected in Old Tampa Bay, Florida (USGS FAN 2015-329-FA). The averaged results for each sample, including the number of runs used, the standard deviation of the averaged results, and graphical class-size distributions, are provided. Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: 15FWR02_GammaSpectroscopy.xlsx Entity_Type_Definition: Microsoft Excel workbook listing gamma spectroscopy radiochemistry results for the uppermost five 1-cm depth intervals from sediment cores collected in Old Tampa Bay, Florida (USGS FAN 2015-329-FA). The results for each core are provided on its own tab. Entity_Type_Definition_Source: USGS Detailed_Description: Entity_Type: Entity_Type_Label: 15FWR02_GammaSpectroscopy.csv Entity_Type_Definition: Comma-separated values text file listing gamma spectroscopy radiochemistry results for the uppermost five 1-cm depth intervals from sediment cores collected in Old Tampa Bay, Florida (USGS FAN 2015-329-FA). Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Site ID Attribute_Definition: Site identifier assigned by USGS scientist Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Character string Attribute: Attribute_Label: Sampling Date Attribute_Definition: Date identifier, measured in days Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 08/26/2015 Range_Domain_Maximum: 08/26/2015 Attribute_Units_of_Measure: mm/dd/yyyy Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude of station location, in decimal degrees recorded by a Garmin GSPMAP 1040xs GPS receiver Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 27.94204 Range_Domain_Maximum: 28.02002 Attribute_Units_of_Measure: Decimal degrees Attribute_Measurement_Resolution: 0.00001 Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude of site location, in decimal degrees recorded by a Garmin GSPMAP 1040xs GPS receiver Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -82.67490 Range_Domain_Maximum: -82.67291 Attribute_Units_of_Measure: Decimal degrees Attribute_Measurement_Resolution: 0.00001 Attribute: Attribute_Label: Water Depth (m) Attribute_Definition: Water depth at station location, in meters Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.5 Range_Domain_Maximum: 4.1 Attribute_Units_of_Measure: Meters Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Sampling Depth (m, approximate) Attribute_Definition: Approximate depth in the water column at which the YSI measurement was collected at each core location, estimated by the USGS scientist Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.0 Range_Domain_Maximum: 4.1 Attribute_Units_of_Measure: Meters Attribute_Measurement_Resolution: 0.25 Attribute: Attribute_Label: Temperature (°C) Attribute_Definition: Water temperature in degrees Celsius at each core location Attribute_Definition_Source: YSI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 30.5 Range_Domain_Maximum: 32.0 Attribute_Units_of_Measure: Degrees Celsius Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Barometric Pressure (mmHg) Attribute_Definition: Barometric pressure in millimeters mercury at each core location Attribute_Definition_Source: YSI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 762.0 Range_Domain_Maximum: 762.5 Attribute_Units_of_Measure: Millimeters of mercury Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Dissolved Oxygen (%) Attribute_Definition: Water column percent dissolved oxygen at each core location Attribute_Definition_Source: YSI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 61.9 Range_Domain_Maximum: 87.4 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Dissolved Oxygen (mg/L) Attribute_Definition: Water column dissolved oxygen in milligrams per liter at each core location Attribute_Definition_Source: YSI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.2 Range_Domain_Maximum: 6.3 Attribute_Units_of_Measure: Milligrams per liter Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Specific Conductance (mS/cm) Attribute_Definition: Water column specific conductance in millisiemens per centimeter at core location Attribute_Definition_Source: YSI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 15.6 Range_Domain_Maximum: 22.0 Attribute_Units_of_Measure: Millisiemens per centimeter Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Salinity Attribute_Definition: Water column salinity at each core location Attribute_Definition_Source: YSI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 9.0 Range_Domain_Maximum: 13.1 Attribute_Units_of_Measure: Practical salinity units Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: pH Attribute_Definition: Water column pH at each core location Attribute_Definition_Source: YSI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7.5 Range_Domain_Maximum: 8.4 Attribute_Units_of_Measure: Hydrogen ion concentrations Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: pH (mV) Attribute_Definition: Water column pH in millivolts at each core location Attribute_Definition_Source: YSI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -81.7 Range_Domain_Maximum: -30.6 Attribute_Units_of_Measure: Millivolts Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Oxidation-Reduction Potential (mV) Attribute_Definition: Water column oxidation-reduction potential in millivolts at each core location Attribute_Definition_Source: YSI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -179.5 Range_Domain_Maximum: 63.5 Attribute_Units_of_Measure: Millivolts Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Cast Date and Time (Local) Attribute_Definition: Date and time of SonTek Castaway CTD cast in Eastern Daylight Time Attribute_Definition_Source: SonTek Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 08/26/2015 9:42 Range_Domain_Maximum: 08/26/2015 14:05 Attribute_Units_of_Measure: mm/dd/yyyy hh:mm Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Latitude (WGS 84) Attribute_Definition: Latitude of cast location, in decimal degrees recorded by the SonTek Castaway CTD Attribute_Definition_Source: SonTek Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 27.94200 Range_Domain_Maximum: 28.02001 Attribute_Units_of_Measure: Decimal degrees Attribute_Measurement_Resolution: 0.00001 Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude of cast location, in decimal degrees recorded by the SonTek Castaway CTD Attribute_Definition_Source: SonTek Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -82.67498 Range_Domain_Maximum: -82.67302 Attribute_Units_of_Measure: Decimal degrees Attribute_Measurement_Resolution: 0.00001 Attribute: Attribute_Label: Pressure (dbar) Attribute_Definition: Water pressure profile in decibars recorded by a SonTek Castaway CTD at each core location Attribute_Definition_Source: SonTek Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.15 Range_Domain_Maximum: 4.66 Attribute_Units_of_Measure: Decibars Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Depth (m) Attribute_Definition: Water column depth profile in meters recorded by a SonTek Castaway CTD at each core location Attribute_Definition_Source: SonTek Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.15 Range_Domain_Maximum: 4.74 Attribute_Units_of_Measure: Meters Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Temperature (°C) Attribute_Definition: Water column temperature in degrees Celsius recorded by a SonTek Castaway CTD at each core location Attribute_Definition_Source: SonTek Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 31.0 Range_Domain_Maximum: 32.4 Attribute_Units_of_Measure: Degrees Celsius Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Conductivity (uS/cm) Attribute_Definition: Water column conductivity profile in microsiemens per centimeter recorded by a SonTek Castaway CTD at each core location Attribute_Definition_Source: SonTek Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 17332.5 Range_Domain_Maximum: 24643.6 Attribute_Units_of_Measure: Microsiemens per centimeter Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Specific Conductance (uS/cm) Attribute_Definition: Water column specific conductance profile in microsiemens per centimeter recorded by a SonTek Castaway CTD at each core location Attribute_Definition_Source: SonTek Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 15421.7 Range_Domain_Maximum: 21811.1 Attribute_Units_of_Measure: Microsiemens per centimeter Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Salinity (PSS) Attribute_Definition: Water column salinity profile measured on the practical salinity scale recorded by a SonTek Castaway CTD at each core location Attribute_Definition_Source: SonTek Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 9.0 Range_Domain_Maximum: 13.1 Attribute_Units_of_Measure: Practical salinity scale Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Sound Velocity (m/s) Attribute_Definition: Speed of sound in water profile in meters per second recorded by a SonTek Castaway CTD at each core location Attribute_Definition_Source: SonTek Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1521.3 Range_Domain_Maximum: 1527.3 Attribute_Units_of_Measure: Meters per second Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Density (kg/m^3) Attribute_Definition: Water column density profile in kilograms per cubic meter recorded by a SonTek Castaway CTD at each core location Attribute_Definition_Source: SonTek Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1001.9 Range_Domain_Maximum: 1004.9 Attribute_Units_of_Measure: Kilograms per cubic meter Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Core ID Attribute_Definition: Core identifier assigned by USGS scientist Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Character string Attribute: Attribute_Label: Depth (cm) Attribute_Definition: Depth interval in centimeters measured below the core surface Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0-1 Range_Domain_Maximum: 21-22 Attribute_Units_of_Measure: Centimeters Attribute_Measurement_Resolution: 0.5 Attribute: Attribute_Label: Water Content (g-water/g-wet) Attribute_Definition: The ratio of the mass of water to the mass of wet sediment Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.18 Range_Domain_Maximum: 0.77 Attribute_Units_of_Measure: Grams of water per grams of wet sediment Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Porosity (cm^3-voids/cm^3-wet Attribute_Definition: Porosity of the sediment interval Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.27 Range_Domain_Maximum: 1.31 Attribute_Units_of_Measure: Cubic centimeter of void space per cubic centimeter of wet sediment Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Dry Bulk Density (g/cm^3) Attribute_Definition: Dry bulk desnsity of the sediment interval Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.25 Range_Domain_Maximum: 1.56 Attribute_Units_of_Measure: Grams per cubic centimeter Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Loss On Ignition (g-OM/g-dry) Attribute_Definition: The ratio of the mass of organic matter combusted at 550 Celsius to the pre-combusted mass of dry sediment Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.006 Range_Domain_Maximum: 0.103 Attribute_Units_of_Measure: Grams of organic matter per grams of dry sediment Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Be-7 (dpm/g) Attribute_Definition: Beryllium-7 specific activity measured in disintegrations per minute per gram of dry sediment decay-corrected to the date of field collection Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: Not Detected Range_Domain_Maximum: 2.87 Attribute_Units_of_Measure: Disintegrations per minute per gram Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Be-7 Error (+/- dpm/g) Attribute_Definition: Beryllium-7 specific activity counting error measured in disintegrations per minute per gram of dry sediment Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: Null Range_Domain_Maximum: 0.56 Attribute_Units_of_Measure: Disintegrations per minute per gram Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Be-7 Inventory (dpm/cm^2) Attribute_Definition: Beryllium-7 activity inventory measured in disintegrations per minute per gram of square centimeter decay-corrected to the date of field collection Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: Not Detected Range_Domain_Maximum: 1.53 Attribute_Units_of_Measure: Disintegrations per minute per square centimeter Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Be-7 Inventory Error (+/- dpm/cm^2) Attribute_Definition: Beryllium-7 inventory error measured in disintegrations per minute per gram of square centimeter Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: Null Range_Domain_Maximum: 0.27 Attribute_Units_of_Measure: Disintegrations per minute per square centimeter Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Cs-137 (dpm/g) Attribute_Definition: Cesium-137 specific activity measured in disintegrations per minute per gram of dry sediment decay-corrected to the date of field collection Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: Not Detected Range_Domain_Maximum: 0.30 Attribute_Units_of_Measure: Disintegrations per minute per gram Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Cs-137 Error (+/- dpm/g) Attribute_Definition: Cesium-137 specific activity counting error measured in disintegrations per minute per gram of dry sediment Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: Null Range_Domain_Maximum: 0.12 Attribute_Units_of_Measure: Disintegrations per minute per gram Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Pb-210 (dpm/g) Attribute_Definition: Lead-210 specific activity measured in disintegrations per minute per gram of dry sediment decay-corrected to the date of field collection Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.56 Range_Domain_Maximum: 11.98 Attribute_Units_of_Measure: Disintegrations per minute per gram Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Pb-210 Error (+/- dpm/g) Attribute_Definition: Lead-210 specific activity counting error measured in disintegrations per minute per gram of dry sediment Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.18 Range_Domain_Maximum: 0.67 Attribute_Units_of_Measure: Disintegrations per minute per gram Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Ra-226 (dpm/g) Attribute_Definition: Radium-226 specific activity measured in disintegrations per minute per gram of dry sediment decay-corrected to the date of field collection Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.43 Range_Domain_Maximum: 3.54 Attribute_Units_of_Measure: Disintegrations per minute per gram Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Ra-226 Error (+/- dpm/g) Attribute_Definition: Radium-226 specific activity counting error measured in disintegrations per minute per gram of dry sediment Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.06 Range_Domain_Maximum: 0.23 Attribute_Units_of_Measure: Disintegrations per minute per gram Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Th-234 (dpm/g) Attribute_Definition: Thorium-234 specific activity measured in disintegrations per minute per gram of dry sediment decay-corrected to the date of field collection Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.72 Range_Domain_Maximum: 6.24 Attribute_Units_of_Measure: Disintegrations per minute per gram Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Th-234 Error (+/- dpm/g) Attribute_Definition: Thorium-234 specific activity counting error measured in disintegrations per minute per gram of dry sediment Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.18 Range_Domain_Maximum: 0.64 Attribute_Units_of_Measure: Disintegrations per minute per gram Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: K-40 (dpm/g) Attribute_Definition: Potassium-40 specific activity measured in disintegrations per minute per gram of dry sediment decay-corrected to the date of field collection Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4.25 Range_Domain_Maximum: 16.46 Attribute_Units_of_Measure: Disintegrations per minute per gram Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: K-40 Error (+/- dpm/g) Attribute_Definition: Potassium-40 specific activity counting error measured in disintegrations per minute per gram of dry sediment Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.57 Range_Domain_Maximum: 2.50 Attribute_Units_of_Measure: Disintegrations per minute per gram Attribute_Measurement_Resolution: 0.01 Overview_Description: Entity_and_Attribute_Overview: The detailed attribute descriptions for the grain size workbooks are provided in the included data dictionary (Grain_Size_Data_Dictionary.pdf). These metadata are not complete without this file. Entity_and_Attribute_Detail_Citation: Data dictionary for grain-size data tables, in: Marot, M.E., Wheaton, C.J., Smith, C.G., 2017, Seasonal sedimentary data collected from Old Tampa Bay, Florida, 2015-2016: U.S. Geological Survey data release, https://doi.org/10.5066/F7K64G99XX. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Contact_Person: Marci E. Marot Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: mmarot@usgs.gov Resource_Description: Downloadable data Distribution_Liability: This publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Compressed (zip) archive Format_Version_Date: 2017 Format_Specification: Multimedia presentation Format_Information_Content: This zip archive includes Microsoft Excel spreadsheets, comma-separated values text files, Portable Document Format (PDF) image files, and accompanying metadata for sediment data from cores collected from Old Tampa Bay, Florida (USGS FAN 2015-329-FA). File_Decompression_Technique: Unzip Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7K64G99/data/15FWR02/15FWR02_FieldLogs.docx Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7K64G99/data/15FWR02/15FWR02_SiteLocations.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7K64G99/data/15FWR02/15FWR02_WaterQualityParameters.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7K64G99/data/15FWR02/15FWR02_CTDProfiles.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7K64G99/data/15FWR02/15FWR02_SedimentPhysicalProperties.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7K64G99/data/15FWR02/15FWR02_GrainSize.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7K64G99/data/15FWR02/15FWR02_GammaSpectroscopy.zip Network_Resource_Name: https://coastal.er.usgs.gov/data-release/doi-F7K64G99/data/15FWR02/15FWR02_DataPlots.jpg Fees: None, if obtained online Technical_Prerequisites: The data tables for USGS FAN 2015-329-FA were created in Microsoft Excel 2010 and can be opened using Microsoft Excel 2007 or higher; these data may also be viewed using the free Microsoft Excel Viewer (http://office.microsoft.com/). The data tables are also provided as comma-separated values text files (.csv). The .csv data file contains the tabular data in plain text and may be viewed with a standard text editor. Portable Document Format (PDF) files can be viewed using the free software Adobe Acrobat Reader (http://get.adobe.com/reader). Metadata_Reference_Information: Metadata_Date: 20220615 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Marci E. Marot Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8000 Contact_Electronic_Mail_Address: mmarot@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: None Metadata_Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None