Noreen A. Buster
Jennifer L. Miselis
Shinobu Okano
Paul T. Gayes
Jenna C. Hill
20170717
Cape Canaveral, Florida, seismic chirp collected in 2016 by Coastal Carolina University
multimedia presentation
U.S. Geological Survey Data Release
doi:10.5066/F7833Q8J
https://doi.org/10.5066/F7833Q8J
A geophysical survey was conducted offshore Cape Canaveral, Florida by Coastal Carolina University offshore of Cape Canaveral, Florida using high-resolution chirp sub-bottom, multibeam bathymetry and side scan sonar (SSS) systems on June 13, 14, 16, and 17 of 2016. This USGS data release includes the resulting processed elevation point data (xyz), an interpolated digital elevation model (DEM), with processed backscatter, side scan sonar, and seismic chirp data.
The purpose of the survey was to collect geophysical data in the shallow water (2-20 meters [m] water depth) off of Cape Canaveral, Florida, to better understand the linkages between geologic variability and the evolution and resiliency of the coastal system. Data were collected during USGS field activity number (FAN) 2016-342-FA. Additional survey and data details are available from the USGS Coastal and Marine Geoscience Data System (CMGDS) at, http://cmgds.marine.usgs.gov/fan_info.php?fan=2016-342-FA.
The naming convention used for each subbottom line is as follows: CC##, where '##' are the last two digits of the track line number. The seismic source utilized during the Coastal Carolina University survey consisted of an EdgeTech 512i chirp towfish running DiscoverSB v. 4.09 acquisition software and towed about 2 meters (m) below the surface, while being floated on poly balls approximately 20 m behind the vessel. The Global Positioning System (GPS) antenna was located approximately 5.5 m above the water surface and approximately 13 m fore of the stern of the vessel. The data were acquired using a frequency sweep of 2 to 12 kilohertz (kHz), a 46 kHz sample frequency, a 20 milliseconds (ms) sweep length, and an original record length time window of 0-0.15 seconds The survey speed ranged from 4.5 to 5 knots. The binary portion of the unprocessed seismic data is stored in the Society of Exploration Geophysicists SEG Y rev. 0 (Barry and others, 1975), IEEE floating format, which is a standard digital format that can be read and manipulated by most seismic processing software packages; the first 3,200 bytes of the file header are in in American Standard Code for Information Interchange (ASCII) format instead of Extended Binary Coded Decimal Interchange Code (EBCDIC) format. The SEG Y formatted trace files have a .sgy extension. The SEG Y files may be downloaded and processed with commercial or public domain software such as Seismic Unix (SU) (Cohen and Stockwell, 2010). Also provided are printable Joint Photographic Experts Group (JPG) images of each profile. Note, file CC38.jpg doesn't exist as it is a very small file (27 traces, in a 309 KB file). The line may have been terminated for acquisition issues.
20160613
20160617
ground condition
None planned
-80.619468
-80.438027
28.672442
28.382548
ISO 19115 Topic Category
oceans
elevation
location
geoscientificInformation
imageryBaseMapsEarthCover
USGS Thesaurus
marine geology
geophysics
ocean characteristics
ocean processes
None
seismic reflection
chirp
hydrography
geophysical
subbottom profile
512i
Society of Exploration Geophysicists SEG Y
Coastal Carolina University
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
St. Petersburg Coastal and Marine Science Center
SPCMSC
coastal location
Geographic Names Information System (GNIS)
Florida
Cape Canaveral
Oregon Geospatial Enterprise Office (GEO) Stratum Keyword
sea surface
epipelagic
None
June 2016
None
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originator of these data in future products or derivative research.
Noreen A. Buster
U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
mailing and physical
600 4th Street South
St. Petersburg
FL
33701
USA
(727)502-8114
nbuster@usgs.gov
U.S. Geological Survey, Coastal and Marine Geology Program, St. Petersburg Coastal and Marine Science Center
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959
The validity or accuracy of marine subbottom profiles is highly qualitative and depends on equipment and operating condition variables. Visual inspection of the images rendered from the data did not show any major anomalies.
This dataset is from one field activity with consistent instrument calibrations.
These data are collected along two-dimensional (2-D) tracklines and are therefore inherently incomplete.
The trackline position data were recorded using HYPACK (2014) hydrographic acquisition and processing software.
These data are not to be used for bathymetry. Two-way travel (TWT) times shown on the printable profile images are relative to the chirp towfish position, not to the sea surface.
The SEG Y data were acquired with an Edgetech 512i towfish running Edgetech DiscoverSB 4.09 acquisition software and towed 2 meters (m) below the surface floated on poly balls approximately 20 m behind the vessel. The data were acquired using a frequency sweep of 2 to 12 kilohertz (kHz), a 46 kHz sample frequency, a 20 ms sweep length, and an original record length time window of 0-0.15 seconds The survey speed ranged from 4.5 to 5 knots.
20160719
Center for Marine and Wetland Studies
Paul Gayes
Director
mailing
190 Allied Dr.
Conway
SC
29526
US
843-349-4015
ptgayes@coastal.edu
The SEG Y data were processed with Seismic Unix release 44 and SIOSEIS version 2015.4.2. The data were heave corrected using a running average swell filter, muted to the seafloor and a time-varying gain was applied. Products include SEG Y files and .jpg images of the seismic data.
20160719
Center for Marine and Wetland Studies
Paul Gayes
Director
mailing
190 Allied Dr.
Conway
SC
29526
US
843-349-4015
ptgayes@coastal.edu
A trackline file was created from the navigation associated with seismic acquisition.
20160719
Canaveral_CCU2016_Tracklines_NAD83.shp
Center for Marine and Wetland Studies
Paul Gayes
Director
mailing
190 Allied Dr.
Conway
SC
29526
US
843-349-4015
ptgayes@coastal.edu
Vector
string
55
Universal Transverse Mercator
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0.000000
500000.000000
0.000000
coordinate pair
0.000000002220024164500956
0.000000002220024164500956
meters
North American Datum 1983
Geodetic Reference System 80
6378137.000000
298.257222101
North American Vertical Datum 1988
0.0001
meters
Attribute values
Noreen A. Buster
U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
mailing and physical
600 4th Street South
St. Petersburg
FL
33701
USA
(727)502-8114
nbuster@usgs.gov
Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), 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 constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described or contained herein. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
SEG Y
ZIP
4840
https://coastal.er.usgs.gov/data-release/doi-F7833Q8J/data/Canaveral_CCU2016_Chirp_segy.zip
None
20170717
Noreen A. Buster
U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
Geologist
mailing and physical
600 4th Street South
St. Petersburg
FL
33701
USA
(727) 502-8000
nbuster@usgs.gov
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
none
unclassified
None