Data Release
Archive of Chirp Subbottom Profile Data Collected in 2022 From Breton Island, Louisiana
By Arnell S. Forde, James G. Flocks, and Andrew S. Farmer
U.S. Geological Survey, St. Petersburg, Florida
Summary
As part of the Breton Island Post Construction Monitoring project, scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted a nearshore geophysical survey in August of 2022 to map the borrow site created during the Breton Island, Louisiana restoration effort that began in December 2020. The objective of the project is to provide baseline information of the physical structure of the dredge pit in order to monitor morphologic evolution over time. Collecting geophysical data can help researchers to identify relationships between the geologic history of the island, its present-day morphology, and sediment distribution. High-resolution geophysical data collected along this barrier island can further the analyses and geomorphological interpretations of this and other coastal systems, improving researchers understanding of coastal response and evolution.
This data release serves as an archive of subbottom profile and navigation data collected August 5, 2022, offshore of Breton Island, LA, during USGS Field Activity Number 2022-328-FA. Data products, including chirp subbottom profile data and images, survey trackline maps, location data with formal Federal Geographic Data Committee (FGDC) metadata, and field logs are provided.
Data
| File Name and Description | Metadata (XML format) | Metadata (text format) | Download File |
|---|---|---|---|
| 2022-328-FA_segy.zip Digital chirp subbottom trace data (.sgy) |
2022-328-FA_metadata.xml | 2022-328-FA_metadata.txt | 2022-328-FA_segy.zip (1.28 GB) |
| 2022-328-FA_nav.zip Navigation data for the entire survey, 1000-shot-interval locations, and start of line locations (.csv) |
Same as above | Same as above | 2022-328-FA_nav.zip (1.0 MB) |
| 2022-328-FA_seisimag.zip Processed subbottom profile images (.gif) |
Same as above | Same as above | 2022-328-FA_seisimag.zip (10.6 MB) |
| 2022-328-FA_gis.zip Subbottom profile data location map, geospatial files, and images (.mxd, .kmz, .shp, .gif, .png) |
2022-328-FA_shots.shp.xml 2022-328-FA_sol.shp.xml 2022-328-FA_trkln.shp.xml |
2022-328-FA_shots_metadata.txt 2022-328-FA_sol_metadata.txt 2022-328-FA_trkln_metadata.txt |
2022-328-FA_gis.zip (11.9 MB) |
| Supplemental information | |||
| 2022-328-FA_logs.zip Field Activity Collection System (FACS) logs, acquisition geometry, and geophysical operations log (.docx, .tif, .xlsx) |
Not applicable | Not applicable | 2022-328-FA_logs.zip (151 KB) |
Figure 1. Regional map showing August 2022 Breton Island, Louisiana study area (indicated by red box) and geophysical trackline locations. Basemap imagery provided by Esri, Maxar, Earthstar Geographics, and the GIS User Community.
Suggested Citation
Forde, A.S., Flocks, J.G., and Farmer, A.S., 2023, Archive of chirp subbottom profile data collected in 2022 From Breton Island, Louisiana: U.S. Geological Survey data release, https://doi.org/10.5066/P9Q28MFD.