| Massachusetts Division of Marine Fisheries SED Dataset 2_17_11 |
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This GIS data layer represents point coverage of seafloor sediment size and composition
in Massachusetts territorial waters. The data were created by aggregating available
sediment point data collected from the United States Geological Survey's (USGS) usSEABED,
version 1.0, U.S. Geological Survey Data Series 118 (Reid 2005), the Massachusetts
Water Resources Authority, the Massachusetts Division of Marine Fisheries, and the
United States Environmental Protection Agency. Sediment data were collected between
1884 to 2008 from a variety of published and unpublished sediment texture and other
geologic data. As such, the data has a variety of different horizontal accuracies
and sampling and analysis methodologies. The dataset includes relative data quality
for each point. More information regarding the compiled data sources and data quality
assessment is available in Ford, K.H. and S.E. Voss. 2010. Seafloor sediment composition
in Massachusetts determined using point data. Massachusetts Division of Marine Fisheries
Technical Report, TR-45. 21pp. |
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