USGS - science for a changing world

St. Petersburg Coastal and Marine Science Center

Data Release

Multibeam Bathymetry Data Collected in 2018 from Grand Bay and Point Aux Chenes Bay Alabama/Mississippi

By Chelsea A. Stalk,1 Jake J. Fredericks,2 and Christopher G. Smith2

1 Cherokee Nation Technologies
2 U.S. Geological Survey

Summary

The U.S Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) conducted an ellipsoidally referenced survey using a multibeam echosounder within Grand Bay and Point Aux Chenes Bay, Alabama/Mississippi October 22–23, 2018. The survey is bridged between the former Sea level and Storm Impacts on Estuarine Environments and Shorelines project (SSIEES), which focused on the influence of marsh shoreline geometry on erosion and deposition patterns, and the current  Estuarine and Marsh Geology Research Project (EMRG) which focuses on evaluating the linkage between marsh shoreline metrics and marsh geology. To facilitate mapping of the eroding marsh edges at locations of interest around the bay, the multibeam echosounder was horizontally tilted 62.5 degrees. This dataset includes the processed elevation point data (x,y,z), as derived from a 1-meter bathymetric grid, in the native format of the World Geodetic System of 1984 (WGS84).  The data were transformed horizontally into the North American Datum of 1983 (NAD83) and vertically to the North American Vertical Datum of 1988 (NAVD88), using the GEOID12A model, and these files are also provided.

Data

File Name and Description Metadata (XML format) Metadata (text format) Download File
Grand_Bay_2018_MBB_xyz.zip
Processed elevation point data (xyz) as derived from a 1-meter grid provided in WGS84 (.xyz) and NAD83, NAVD88 Geoid 12A
Grand_Bay_2018_MBB_xyz_metadata.xml Grand_Bay_2018_MBB_xyz_metadata.txt Grand_Bay_2018_MBB_xyz.zip
(8.5 MB)

Location map of areas surveys as a part of the 2018 multibeam bathymetry survey within Grand Bay and Point Aux Chenes Bay, AL/MS.
Figure 1. Location map of areas surveyed as a part of the 2018 multibeam bathymetry survey within Grand Bay and Point Aux Chenes Bay, AL/MS.

Suggested Citation

Stalk, C.A., Fredericks, J.J., and Smith, C.G., 2019, Multibeam bathymetry data collected in 2018 from Grand Bay and Point Aux Chenes Bay Alabama/Mississippi: U.S. Geological Survey data release, https://doi.org/10.5066/P9R4LO3U.



Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://coastal.er.usgs.gov/data-release/doi-P9R4LO3U/index.html
Page Contact Information: Feedback
Page Last Modified: August 01, 2019 @ 01:08 PM (JSG)