To create a complete modern topobathymetric map of the Mississippi barrier islands from Cat Island to Dauphin Island. Data to provide information for the following: sediment budget; assessment of immediate sand resources in the region, modern geologic framework; historical island change measurements; base-level assessment of the seafloor since the 2005 hurricane season.
Location
Cat Island, MS to Dauphin Island, AL
Summary
A total of 203 (09CCT03 - 139 lines, 09CCT03A - 64 lines) Chirp 2-D subbottom profiles and 216 (09CCT03 - 146 lines, 09CCT03A - 70 lines) Swath lines were collected and ~50 km of shoreline were surveyed. Note: A subset of the seismic data collected around Cat Island, MS, was informally given the ID of 09CCT03A and consisted of lines 09c627 to 09c695.
Info derived
High precision Submetrix swath bathymetry data; shallow sub-bottom image profiles, recent shoreline topography (X, Y, Z).
Comments
Additional Equipment: one portable GPS topographic survey buggy.
\\gs\stpetersburgfl-g\Geology_of_Coastal_Margins\Archive\Data\Final\Bathy_Swath\08CCT01\Data Series 675\software\arc
SD digital location
http://pubs.usgs.gov/ds/675/html/logs.html
Comments
Even though the 2007 MS/AL shoreline and 50 m grid files are also included in the arc folder, this dataset description applies only to the 2009 survey area tracklines.
updated elevation point data (xyz) in which NOAA's Vdatum version 3.6 was used convert the 2008-2009 XYZ soundings to Universal Transverse Mercator (UTM) North American Datum of 1983 (NAD83) horizontal datum and North American Vertical Datum of 1988 (NAVD88) GEOID12B vertical datum
Trackline shapefiles for single-beam and swath bathymetry
Format
SHP
Amount
39 MB
Digital location
\\gs\stpetersburgfl-g\Geology_of_Coastal_Margins\Archive\Data\Final\Bathy_Swath\08CCT01\Data Series 675\html\data_products\Trackline
SD digital location
http://pubs.usgs.gov/ds/675/html/logs.html
Comments
Tracklines collected during following bathymetric cruises: 08CCT01, 08CCT02, 09CCT03, 09CCT04. Note that 09CCT03 did not collect single-beam bathymetry, only swath.