Geospatial Navigational Data Associated with Chirp Sub-Bottom Profiles Collected During USGS Field Activity Number 2024-320-FA in 2024 Offshore of Breton Island, Louisiana

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 2024 to map the borrow site created during the Breton Island, Louisiana (LA) restoration effort that began in December 2020. The restoration effort was part of the Deepwater Horizon oil spill settlement to restore natural resources and services injured by the spill. Following restoration, monitoring efforts of the island and surrounding seafloor are necessary to evaluate the programmatic goals of the restoration. This survey, funded by the Louisiana Outer Coast Restoration project, reoccupies a subset of sub-bottom profile tracklines originally acquired in August 2022; refer to Forde and others (2023) for details. The data provided in this publication provide baseline information regarding the physical structure of the dredge pit and help researchers monitor morphologic evolution over time. The data release associated with this metadata record serves as an archive of high-resolution chirp sub-bottom trace data and navigation files. Shapefiles (.shp) provided in the data release represent point and polyline vector datasets of Field Activity Number (FAN) 2024-320-FA chirp sub-bottom profile trackline, start of line, and 1,000-shot-interval locations.

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  "010:12"
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  "geospatial"
]