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NCCOS Assessment: Orthoimagery and sediment core description data in Galveston Bay, Texas from 20231010 to 20231011 (NCEI Accession 0303740)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: May 29, 2026 at 08:33 PM | Dataset Last Updated: April 29, 2025 at 12:00 AM
This dataset contains imagery, GPS coordinates, elevation data, and sediment characteristics collected from three historical marsh mound restoration projects in Galveston Bay, Texas. These three marsh restoration sites—Jumbile Phase II, J Cove, and Mcallis Point—were revisited to evaluate their long-term performance. The data collected for assessment is stored in four .tif files and two .csv files. The .tif files consist of ortho mosaic images of each site, captured using a DJI Phantom 4 Pro drone. The .csv files contain detailed gps data and sediment core information, including bulk density, grain size, and percent carbon. The Trimble R12 GNSS System was utilized to capture the GPS data for sediment cores, ground control points (used for georeferencing drone imagery), and the topography of marsh mounds. A total of twenty sediment cores were extracted by driving a 7 cm diameter polycarbonate tube into the ground. The cores were sectioned in the field for transport. Sediment cores were further analyzed at the lab to determine sediment characteristics. Bulk density and grain size were determined for every 5 cm interval of the core by measuring the total weight of the wet core then splitting the interval into two equal-weight halves. One half was used for bulk density, while the other was used for grain size. The bulk density half was dried, weighed, and subsampled to measure percent carbon with a Perkin Elmer 2400 series II CHNS/O elemental analyzer. The grain size half was sieved into 4 categories: gravel, macro organic matter (both >0.2mm), sand (0.063-2mm), and silt (<0.063mm). For the top 5 cm of the cores, the remaining half of the bulk density sample was re-weighed after drying and subsampling, then ashed in a muffle furnace to calculate loss on ignition (LOI). More information on these sites can be found here: https://arcg.is/1urP5j

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0303740 CORE - BULK DENSITY images ORGANIC MATTER - WEIGHT PERCENT SEDIMENT - GRAIN SIZE SEDIMENTS SEDIMENTS - DRY WEIGHT camera

Complete Metadata
@type dcat:Dataset
accessLevel non-public
contactPoint 
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describedByType application/octet-steam
description This dataset contains imagery, GPS coordinates, elevation data, and sediment characteristics collected from three historical marsh mound restoration projects in Galveston Bay, Texas. These three marsh restoration sites—Jumbile Phase II, J Cove, and Mcallis Point—were revisited to evaluate their long-term performance. The data collected for assessment is stored in four .tif files and two .csv files. The .tif files consist of ortho mosaic images of each site, captured using a DJI Phantom 4 Pro drone. The .csv files contain detailed gps data and sediment core information, including bulk density, grain size, and percent carbon. The Trimble R12 GNSS System was utilized to capture the GPS data for sediment cores, ground control points (used for georeferencing drone imagery), and the topography of marsh mounds. A total of twenty sediment cores were extracted by driving a 7 cm diameter polycarbonate tube into the ground. The cores were sectioned in the field for transport. Sediment cores were further analyzed at the lab to determine sediment characteristics. Bulk density and grain size were determined for every 5 cm interval of the core by measuring the total weight of the wet core then splitting the interval into two equal-weight halves. One half was used for bulk density, while the other was used for grain size. The bulk density half was dried, weighed, and subsampled to measure percent carbon with a Perkin Elmer 2400 series II CHNS/O elemental analyzer. The grain size half was sieved into 4 categories: gravel, macro organic matter (both >0.2mm), sand (0.063-2mm), and silt (<0.063mm). For the top 5 cm of the cores, the remaining half of the bulk density sample was re-weighed after drying and subsampling, then ashed in a muffle furnace to calculate loss on ignition (LOI). More information on these sites can be found here: https://arcg.is/1urP5j
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/0303740.xml
issued 2025-04-22T00:00:00.000+00:00
keyword 
                                            [
  "0303740",
  "CORE - BULK DENSITY",
  "images",
  "ORGANIC MATTER - WEIGHT PERCENT",
  "SEDIMENT - GRAIN SIZE",
  "SEDIMENTS",
  "SEDIMENTS - DRY WEIGHT",
  "camera",
  "CHN Analyzer",
  "GPS",
  "sediment sampler - corer",
  "sediment sieve",
  "in situ",
  "laboratory analyses",
  "US DOC/NOAA/NOS/NCCOS/Center for Coastal Monitoring and Assessment",
  "NOAA National Centers for Coastal Ocean Science",
  "Coastal Waters of Gulf of America",
  "Coastal Waters of Gulf of Mexico",
  "Coastal Waters of Texas",
  "Gulf of America",
  "Gulf of Mexico",
  "oceanography",
  "DOC/NOAA/NOS/NCCOS > National Centers for Coastal Ocean Science, National Ocean Service, NOAA, U.S. Department of Commerce",
  "EARTH SCIENCE > OCEANS > MARINE SEDIMENTS",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ORGANIC MATTER",
  "Average % Carbon",
  "Bulk Density (g/cm^3)",
  "Collection Date",
  "Core Depth Interval",
  "Core Elevation ID (high or low)",
  "Core ID",
  "Easting",
  "Elevation",
  "GPS Point Name",
  "Gravel %",
  "J Cove Orthoimagery",
  "Jumbile Phase II Orthoimagery (A)",
  "Jumbile Phase II Orthoimagery (B)",
  "LOI (%)",
  "MOM %",
  "Mcallis Orthoimagery",
  "Mound ID",
  "Northing",
  "Point Code",
  "Sand %",
  "Silt %",
  "Site",
  "CAMERA > CAMERA",
  "CHN ANALYZERS > Carbon, Hydrogen, Nitrogen Analyzers",
  "GPS RECEIVERS > GPS RECEIVERS",
  "GRANULOMETRIC SIEVES",
  "SEDIMENT CORERS > SEDIMENT CORERS",
  "0.063-2mm sieves",
  "<0.063 sieve",
  ">0.2mm sieve",
  "DJI Phantom 4 Pro RTK",
  "Perkin Elmer CHN elemental analyzer",
  "Trimble R12 GNSS System",
  "drying oven",
  "human",
  "muffle furnace",
  "polycarbonate core tube with 7cm diameter",
  "ruler, knife",
  "UAV > Unmanned Aerial Vehicle",
  "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA",
  "OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO",
  "Galveston Bay, Texas",
  "KR4RYM"
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landingPage https://www.ncei.noaa.gov/contact
language 
                                            []
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2025-04-29T00:00:00.000+00:00
publisher 
                                            {
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  "@type": "org:Organization"
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references 
                                            [
  "https://arcg.is/1urP5j",
  "https://coastalscience.noaa.gov/project/evaluating-nature-based-solution-performance/"
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rights otherRestrictions
spatial -94.980586,29.168075,-95.025503,29.199461
temporal 2023-10-10T00:00:00+00:00/2023-10-11T00:00:00+00:00
title NCCOS Assessment: Orthoimagery and sediment core description data in Galveston Bay, Texas from 20231010 to 20231011 (NCEI Accession 0303740)

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