Datasets > Polygon data > Hudson River (N.Y. and N.J.) > 1950-1999

Sediment Type, Hudson River estuary, 2004

Lamont-Doherty Earth Observatory, Columbia University · 1998 Full Details

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Title
Sediment Type, Hudson River estuary, 2004
Description
This dataset provides sediment types found on the floor of the Hudson River Estuary. The sediment type interpretation is based on the grain size analysis of the cores and grabs with some guidance from acoustic backscatter data collected with sidescan sonar. Sediment profile imagery (SPI) has also been used to supplement these interpretations. Since the first guide in developing this interpretation is contouring the results of the grain size interpretation there is deviation from the side scan images. In most research on sediments, grain size data is given in phi intervals rather than in microns, millimeters, or inches. One phi unit is equal to one Udden-Wentworth grade. Phi diameter is computed by taking the negative log of the diameter in millimeters. We have identified 9 major classes of sediment based on the Wentworth classification. In 1996, the New York State Department of Environmental Conservation (DEC) initiated an effort to map the benthic habitat of the Hudson River Estuary as part of a larger Hudson River Action Plan. This project includes extensive mapping using sidescan sonar, sub-bottom profiling, single and multi-beam bathymetric sonars, as well as collecting ground truth data with sediment cores, grab samples, and sediment profiling imagery (SPI). The goal of the project is the creation of a comprehensive data set that includes detailed interpretive maps of the physical environment of the floor of the estuary. An overview of the first phase of the benthic mapping project can be found in Bell, et al. (2006)
Creator
Lamont-Doherty Earth Observatory, Columbia University
Temporal Coverage
1998-2004
Date Issued
2005
Access Rights
Public
Format
Shapefile
File Size
0.42 MB
Date Added
March 14, 2023

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Cite and Reference

  • Citation
    Lamont-Doherty Earth Observatory, Columbia University (2005). Sediment Type, Hudson River estuary, 2004. . https://cugir.library.cornell.edu/catalog/cugir-007884 (dataset)
  • BTAA Geoportal Link

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