Originator: U.S. Geological Survey
14BIM05_IFB_tracklines: Shapefile of the Interferometric Swath Bathymetry Tracklines Surveyed in 2014 near Breton Island, Louisiana
Geospatial_Data_Presentation_Form: vector digital data
Originator: Nancy T. DeWitt
Originator: Jake J. Fredericks
Originator: James G. Flocks
Originator: Jennifer L. Miselis
Originator: Stanley D. Locker
Originator: Jack L. Kindinger
Originator: Julie C. Bernier
Originator: Kyle W. Kelso
Originator: B.J. Reynolds
Originator: Dana S. Wiese
Originator: Trevor Browning
Archive of bathymetry and backscatter data collected in 2014 nearshore Breton and Gosier Islands, Breton National Wildlife Refuge, Louisiana.
Geospatial_Data_Presentation_Form: multimedia presentation
Series_Name: U.S. Geological Survey Data Series
Publication_Place: St. Petersburg, Florida
Publisher: U.S. Geological Survey
As part of the Barrier Island Monitoring Project, scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center conducted nearshore geophysical surveys off Breton and Gosier Islands, Louisiana, in July and August of 2014. To assist the United States Fish and Wildlife Service (USFWS) with restoration planning efforts, the USGS was tasked with answering fundamental questions about the physical environment of the southern Chandeleur Islands, including the geology, morphology, and oceanography. Baseline data needed to answer these questions was either insufficient or missing in the area. The USGS conducted a comprehensive geologic investigation in the summer of 2014 by collecting geophysical and sedimentological data.
Breton Island, located at the southern end of the Chandeleur Island chain, Louisiana, was recognized as a natural and globally important nesting sanctuary for several bird species and was established as the Breton National Wildlife Refuge (NWR) in 1904. The aerial extent of Breton Island has diminished 90% since 1920. Land loss is attributed to ongoing relative sea-level rise, diminished sediment supply, and storm impacts. The bird population on Breton Island has also declined over the years, most notably after Hurricane George in 1998 and Hurricane Katrina in 2015, which completely submerged the island. Despite the decreasing habitable acreage, migratory seabirds continue to return and utilize Breton Island. To prevent the island from being completely submerged in the future and to protect, stabilize, and provide more nesting and foraging areas for the birding population, the USFWS is proposing a restoration effort to rebuild Breton Island to its pre-Katrina footprint.
This Data Series serves as an archive of processed interferometric-swath, single-beam bathymetry, and side-scan sonar data collected in the nearshore of Breton and Gosier Islands, NWR, Louisiana. The data were collected during two USGS cruises (USGS Field Activity Numbers 2014-314-FA and 2014-317-FA) in July and August 2014. Geographic Information System data products include a 100 meter-cell-size interpolated bathymetry grid surface, trackline maps, and point data files. Additional files include error analysis maps, Field Activity Collection System logs, and formal Federal Geographic Data Committee (FGDC) metadata.
This zip archive contains the survey tracklines in Esri shapefile format for the interferometric bathymetry data collected in July 2014 around the southern Chandeleur Islands, Louisiana.
Trackline files were recorded at the time of the survey using HYPACK version 188.8.131.52 marine surveying, positioning, and navigation software.
Currentness_Reference: ground condition
Maintenance_and_Update_Frequency: None planned
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: marine geology
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: St. Petersburg Coastal and Marine Science Center
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: Barrier Island Evolution Research Project
Theme_Keyword: Barrier Island Mapping
Theme_Keyword: Interferometric Bathymetry
Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Gulf of Mexico
Place_Keyword: Chandeleur Islands
Place_Keyword: Chandeleur Sound
Place_Keyword: Breton Island
Place_Keyword: Gosier Islands
Place_Keyword: Breton Island National Wildlife Refuge
Temporal_Keyword: July 2014
Temporal_Keyword: August 2014
The U.S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data. These data should not be used for navigational purposes.
Contact_Organization: U.S. Geological Survey
Contact_Person: Nancy T. DeWitt
Address_Type: Mailing and physical
Contact_Voice_Telephone: (727) 502-8000
Address: 600 4th Street South
City: St. Petersburg
Funds for this report are part of project funds for the Louisiana Outer Coast Early Restoration Project, obtained by the natural resource trustees for the Deepwater Horizon Oil Spill, pursuant to the Framework for Early Restoration Addressing Injuries Resulting from the Deepwater Horizon Oil Spill executed April 20, 2011. USFWS is the project lead for the North Breton Island Barrier Island Restoration project. Acknowledgment of the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, as a data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices. Sharing of new data layers developed directly from these data would also be appreciated by the U.S. Geological Survey staff. Users should be aware that comparisons with other datasets for the same area from other time periods may be inaccurate, due to inconsistencies resulting from changes in photointerpretation, mapping conventions, and digital processes over time. These data are not legal documents and are not to be used as such.
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.2.2.3552