| Description |
Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS – SPCSMC), conducted a single-beam bathymetry survey within Point Aux Chenes Bay, Mississippi (MS), in June 2022 under the USGS Field Activity Number (FAN) 2022-320-FA. The data was collected from two personal watercrafts (PWC): research vessel (R/V) Shark (subFAN 22CCT09, WVR1) and R/V Chum (subFAN 22CCT10, WVR2). A re-survey of just the north and south subtidal reefs occurred in November 2022 (subFANs 22CCT11 and 22CCT12, respectively). Efforts were supported by the Coastal Marine Hazards Research Preogram (CMHRP) and the National Oceanic and Atmospheric Association (NOAA) Effects of Sea Level Rise (ESLR) Program in partnership with Grand Bay National Estuarine Research Reserve and Mississippi State University. The processed point data files (xyz) are released in two datums, the World Geodetic System of 1984 (WGS84 G2139) ellipsoid height referenced to the Universal Transverse Mercator (UTM) Zone 16 North (N); and the North American Datum of 1983 (NAD83 (2011)), North American Vertical Datum of 1988 (NAVD88) orthometric height with respect to GEOID12A. Additional data products include a single-beam trackline shapefile (.shp), a 10-meter (m) cell-size digital elevation model (DEM). and formal Federal Geographic Data Committee (FGDC) metadata. For consistency and comparison, the shoreline derivation method from Terrano and others (2021) utilized to derive the 2021 shoreline was replicated to derive the 2022 shoreline. Similarly, methods from Stalk and others (2021) utilized to create the 2021 10-meter DEM were replicated to create the 2022 10-m DEM included in this data release. For further information regarding data collection and/or processing methods, refer to DeWitt and others (2017) and Stalk and others (2021). For further information regarding data collection and/or processing methods, refer to DeWitt and others (2017) and Stalk and others (2021). [More]
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