Sommerfield, Christopher K. , 2003, Sommerfield, 2003: Upper Delaware Estuary.
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.400000.
The flattening of the ellipsoid used is 1/294.978698.
Sequential unique whole numbers that are automatically generated.
Coordinates defining the features.
Please review cross reference information for original data set credit to Sommerfield, 2003.
Dr. Christopher K. Sommerfield
University of Delaware, Graduate College of Marine Studies
Assistant Professor of Oceanography
700 Pilottown Road
Lewes, Delaware 19958
(302) 645-4255 (voice)
(302) 645-4007 (FAX)
"The overarching objective of this project was to assist DRBC in identifying sediment depositional zones within the upper estuary, and to quantify rates of accumulation, ultimately to help constrain the loading history of toxic compounds from point and non-point sources (DRBC, 1998)."
Person who carried out this activity:
Chris JenkinsData sources used in this process:
Institute of Arctic & Alpine Research (INSTAAR) University of Colorado at Boulder
1560 30th Street
Boulder, CO 80309-0450
(303) 492-6387 (voice)
(303) 492-6388 (FAX)
Sommerfield, Christopher K. , and Madsen, John A. , 2003, Sedimentological and Geophysical Survey of the Upper Delaware Estuary.
Madsen, John A. , and Sommerfield, Christopher K. , 2003, Application of side -scan sonar, sub-bottom profiling, and echo-sounding techniques to study sediment deposition and erosion in estuaries: Results from the lower Delaware River and upper Delaware Bay: U.S. Hydro 2003 Conference Session 2.3, The Hydrographic Society of America (THSOA).
Are there legal restrictions on access or use of the data?
- Access_Constraints: None.
- Use_Constraints: None.
Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.
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U.S. Geological Survey
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