U.S. Geological Survey
2016
14BIM02_SBB_tracklines: Shapefile of the Single-beam Bathymetry Tracklines Surveyed in 2014 near Breton Island, Louisiana
https://pubs.usgs.gov/ds/1005/downloads/vector/14BIM02_SBB_tracklines.zip
Nancy T. DeWitt
Jake J. Fredericks
James G. Flocks
Jennifer L. Miselis
Stanley D. Locker
Jack L. Kindinger
Julie C. Bernier
Kyle W. Kelso
B.J. Reynolds
Dana S. Wiese
Trevor Browning
2015
Archive of bathymetry and backscatter data collected in 2014 nearshore Breton and Gosier Islands, Breton National Wildlife Refuge, Louisiana.
multimedia presentation
U.S. Geological Survey Data Series
1005
St. Petersburg, Florida
U.S. Geological Survey
https://doi.org/10.3133/ds1005
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 single-beam 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 14.0.9.47 marine surveying, positioning, and navigation software.
2014
ground condition
None planned
-89.304036
-89.014212
29.598682
29.387376
USGS Metadata Identifier
USGS:75273594-0cdc-437e-b3a8-525191f82c97
ISO 19115 Topic Category
geoscientificInformation
location
imageryBaseMapsEarthCover
oceans
General
tracklines
marine geology
hydrography
geophysical
single-beam
bathymetry
HYPACK
U.S. Geological Survey
USGS
St. Petersburg Coastal and Marine Science Center
SPCMSC
Coastal and Marine Geology Program
CMGP
Barrier Island Evolution Research Project
Barrier Island Mapping
14BIM02
2014-314-FA
Geographic Names Information System (GNIS)
Louisiana
Gulf of Mexico
Chandeleur Islands
Chandeleur Sound
Breton Island
Gosier Islands
Breton Island National Wildlife Refuge
None
datum
water
shoreline
None
July 2014
August 2014
none
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.
U.S. Geological Survey
Nancy T. DeWitt
Geologist
Mailing and physical
600 4th Street South
St. Petersburg
FL
33701
US
(727) 502-8000
ndewitt@usgs.gov
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
The positional accuracy of the tracklines is determined by the accuracy of the post-processed GPS position data. The tracklines represent the data coverage extent for the single-beam bathymetry survey for USGS cruise 14BIM02.
This zip archive contains the single-beam bathymetry survey tracklines, recorded at the time of data collection for USGS cruise 14BIM02 in July 2014. Field logs, vessel platform descriptions, and other survey information are available at, http://pubs.usgs.gov/ds/1005/ds-logs.
This is a complete survey trackline dataset for the single-beam bathymetry data collected during USGS Cruise 14BIM02 in July 2014 from the southern Chandeleur Islands.
An Ashtech GPS receiver on the survey boat recorded the 12-channel full-carrier-phase positioning signals (L1/L2) from satellites via a Thales choke-ring antenna. The manufacturer's stated accuracy of the post-processed kinematic GPS data is 1 to 2 centimeters (cm). The raw trackline position data were recorded using HYPACK version 14.0.9.47 marine surveying, positioning, and navigation software.
The survey tracklines do not include or represent vertical data.
Acquisition: The trackline positions for USGS Cruise 14BIM02 was acquired using an Ashtech Z-Xtreme GPS receiver unit streaming position data to the hydrographic software, HYPACK version 14.0.9.47.
2014
U.S. Geological Survey
Nancy T. DeWitt
Geologist
Mailing and physical
600 4th Street South
St. Petersburg
FL
33701
U.S.
(727) 502-8000
ndewitt@usgs.gov
The trackline file was created in Esri ArcGIS version 10.2.2.3552 using the XTools Pro extension, version 11.1. The trackline shapefile was created from the x,y,z point data shapefile, using the XTools' feature conversion tool, "make polylines from points". Within XTools' feature conversion selection window, the following items were selected. The "group by field selection" was set to use the HYPACK line name attribute and the "input feature order - order by field" was set to use the FID attribute. The resultant polyline shapefile was then projected in WGS84 Universal Transverse Mercator (UTM) Zone 16 North.
14BIM02_SBB_Level_03_xxx_ITRF00.shp
2014
14BIM02_SBB_tracklines.shp
U.S. Geological Survey
Nancy T. DeWitt
Geologist
Mailing and physical
600 4th Street South
St. Petersburg
FL
33701
U.S.
(727) 502-8000
ndewitt@usgs.gov
Added keywords section with USGS persistent identifier as theme keyword.
20201013
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Vector
String
170
Universal Transverse Mercator
16
0.9996
-87.0
0.0
500000.0
0.0
coordinate pair
0.6096
0.6096
Meter
D WGS 1984
WGS 1984
6378137.0
298.257223563
14BIM02_SBB_tracklines.shp
Esri shapefile containing the survey tracklines for the single-beam bathymetry data collected during USGS cruise 14BIM02 in July 2014 around the southern Chandeleur Islands, Louisiana.
USGS
FID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
Esri
Polyline ZM is the geometry type defining the features.
HypackLine
String
HYPACK
Survey line number generated by HYPACK and prefaced with the USGS Field Activity Number (FAN) 14BIM02.
DOY
String
Esri
195
210
2014 day of year, the line was surveyed.
Year
String
Esri
Year survey completed
Lenth_m
Length of survey line, in meters
Esri
25.98
21067.34
meters
0.01
U.S. Geological Survey
Mailing and physical
600 4th Street South
St. Petersburg
FL
33701
U.S.
(727) 502-8000
ndewitt@usgs.gov
Downloadable data
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, 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.
Esri shapefile
2014
SHP
ZIP
40.1
https://pubs.usgs.gov/ds/1005/downloads/vector/14BIM02_SBB_tracklines.zip
none
none
This shapefile was created for use with Esri ArcGIS software. It may also be viewed with Esri public domain software ArcExplorer or other GIS software capable of importing the data.
2015
20201013
U.S. Geological Survey
Nancy T. DeWitt
Geologist
Mailing and physical
600 4th Street South
St. Petersburg
FL
33701
U.S.
(727) 502-8000
ndewitt@usgs.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
none
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.
None
Unclassified
None