Coastal bathymetry data collected in 2011 from the Chandeleur Islands, Louisiana

Data Series 848
By: , and 

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Abstract

As part of the Barrier Island Evolution Research project, scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center conducted nearshore geophysical surveys off the northern Chandeleur Islands, Louisiana, in June of 2011. The overall objectives of the study are to better understand barrier-island geomorphic evolution, particularly storm-related depositional and erosional processes that shape the islands over annual to interannual timescales (1-5 years). Collection of geophysical data will allow us to identify relationships between the geologic history of the island and its present day morphology and sediment distribution. This mapping effort was the first in a series of three planned surveys in this area. High resolution geophysical data collected in each of three consecutive years along this rapidly changing barrier-island system will provide a unique time-series dataset that will significantly further the analyses and geomorphological interpretations of this and other coastal systems, improving our understanding of coastal response and evolution over short time scales (1-5 years).

This data series includes the bathymetric data that were collected during two cruises (USGS Field Activity Numbers 11BIM01 and 11BIM02) aboard the Research Vessel (R/V) SurveyCat and the R/V TwinVee along the northern portion of the Chandeleur Islands,Breton National Wildlife Refuge, Louisiana. Data were acquired with the following equipment: a Systems Engineering and Assessment, Ltd., SWATHplus interferometric sonar (234 kilohertz), an EdgeTech 424 (4-24 kHz) chirp sub-bottom profiling system, and a Marimatech E-SEA Sound 206 (200 kHz) echosounder.

This report serves as an archive of processed interferometric swath and single-beam bathymetry data. Geographic Iinformation System data products include a 50-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 metadata.

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Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Coastal bathymetry data collected in 2011 from the Chandeleur Islands, Louisiana
Series title Data Series
Series number 848
DOI 10.3133/ds848
Edition Version 1.0:originally posted September 12, 2014; Version 2.0: July 21, 2015
Year Published 2014
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) St. Petersburg Coastal and Marine Science Center
Description HTML Document
Country United States
State Louisiana
Other Geospatial Breton National Wildlife Refuge;Chandeleur Islands
Online Only (Y/N) Y
Additional Online Files (Y/N) N
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