Denny, Jane F. , 2002, Seismic Systems: Start of Line: ESRI ArcView shapefile version 3.2, U.S. Geological Survey, Woods Hole, MA.This is part of the following larger work.
Schwab, William C., Denny, Jane F., Foster, David S., Lotto, Linda L., Allison, Mead A., Uchupi, Elazar, Swift, B. Ann, Danforth, William W., Thieler, Robert E., and Butman, Bradford, 2002, High-Resolution Quaternary seismic stratigraphy of the New York Bight Continental Shelf: Open-File Report OFR02-152, U.S. Geological Survey, Woods Hole, MA.
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 0.000089992. Longitudes are given to the nearest 0.000089992. Latitude and longitude values are specified in decimal degrees.
The horizontal datum used is WGS84.
The ellipsoid used is WGS84.
The semi-major axis of the ellipsoid used is 6378137.0000000.
The flattening of the ellipsoid used is 1/298.26.
ArcView 3.2
Cruise ID Number
Seismic data source
| Range of values | |
|---|---|
| Minimum: | -74.06 |
| Maximum: | -71.8000 |
| Range of values | |
|---|---|
| Minimum: | 40.15 |
| Maximum: | 41.2322 |
Line Number
Shot Point Number
| Range of values | |
|---|---|
| Minimum: | 57877.82 |
| Maximum: | 772576.56 |
| Range of values | |
|---|---|
| Minimum: | 4449316.76 |
| Maximum: | 4564959.94 |
Calendar year
Day and Time
Jane F. Denny
US Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA 02543
USA
508-457-2311 (voice)
508-457-2310 (FAX)
jdenny@usgs.gov
Beginning in 1995, the USGS, in cooperation with the U.S Army Corps of Engineers (USACE), New York District, began a program to generate reconnaissance maps of the sea floor offshore of the New York-New Jersey metropolitan area, one of the most populated coastal regions of the United States. The goal of this mapping program is to provide a regional synthesis of the sea-floor environment, including a description of sedimentary environments, sediment texture, seafloor morphology, and geologic history to aid in understanding the impacts of anthropogenic activities, such as ocean dumping. This mapping effort differs from previous studies of this area by obtaining digital, sidescan sonar images that cover 100 percent of the sea floor. This investigation was motivated by the need to develop an environmentally acceptable solution for the disposal of dredged material from the New York- New Jersey Port, by the need to identify potential sources of sand for nourishment of the southern shore of Long island, and by the opportunity to develop a better understanding of the transport and long-term fate of contaminants by investigations of the present distribution of materials discharged into the New York Bight over the last 100+ years (Schwab and others, 1997).
Hill, Jenna C. , Schwab, William C. , and Foster, David S. , 2001, Archive of Datasonics SIS-1000 Chirp Subbottom Data Collected During USGS Cruise SEAX 95007, New York Bight, 7-25 1995: Open-File Report 01-97, U.S. Geological Survey, Woods Hole, MA.
Hill, Jenna C., Schwab, W.C., and Foster, D.S., 2001, Archive of Chirp Subbottom Data Collected Druing USGS Cruise SEAX96004 New York Bight, 1 May - 9 June, 1996.: U.S. Geological Survey Open-File Report 01-96, U.S. Geological Survey, Woods Hole, MA.
Hill, Jenna C., Schwab, W.C., and Foster, D.S., 2001, Archive of Water Gun Subbottom Data Collected Druing USGS Cruise SEAX95007 New York Bight, 7-25 May, 1995: U.S. Geological Survey Open-File Report 01-157, U.S. Geological Survey, Woods Hole, MA.
Hill, Jenna C., Schwab, W.C., and Foster, D.S., 2001, Archive of Boomer Subbottom Data Collected Druing USGS Cruise SEAX96004 New York Bight, 1 May - 9 June, 1996.: U.S. Geological Survey Open-File Report 00-340, U.S. Geological Survey, Woods Hole, MA.
Hill, Jenna C., Schwab, W.C., and Foster, D.S., 2001, Archive of Water Gun Subbottom Data Collected Druing USGS Cruise SEAX96004 New York Bight, 1 May - 9 June, 1996.: U.S. Geological Survey Open-File Report 00-396, U.S. Geological Survey, Woods Hole, MA.
Person who carried out this activity:
Jane F. Denny
US Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA 02543
USA
508-457-2311 (voice)
508-457-2310 (FAX)
jdenny@usgs.gov
DGPS is assumed to be accurate within 1-2 meters. Standard GPS is assumed accurate within 5-10 meters. 99% of the positional data is DGPS. Unless noted, all GPS/DGPS data is referenced to WGS84 (NAD83). Slant-range distance is recorded between the sidescan-sonar tow vehicle and a sidemount rigged with an acoustic transponder during acquisition of CHIRP sub-bottom data. Offset between thesidemount and GPS antennae is measured. Basic trigonomic calculations use the slant-range offset to calculate a 'fish'(tow-vehicle) navigation. An assumption in these calculations is that the tow-vehicle is traveling directly behind the vessel; movement to port or starboard is not accounted for within 'fish' navigation. Thus, the horizontal accuarcy of the CHIRP tow-vehicle is +/- 15 meters. The horizontal positioning for boomer, sparker, and water gun seismic systems did not account for source and receiver offsets and offset the GPS antennae and the source and streamer. It is estimated that these offsets could lead to inaccuracies of about 30 m.
Complete
These navigation data have been stripped from the header of seismic SEG-Y data. They have been quality checked by comparing these data to navigation data acquired during cruise operations.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- The U.S. Geological Survey must be referenced as the originator of the dataset in any future publications.
Jane F. Denny
US Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA 02543
USA
508-457-2311 (voice)
508-457-2310 (FAX)
jdenny@usgs.gov
This publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data published on this DVD-ROM have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.
Jane F. Denny
US Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA 02543
USA
508-457-2311 (voice)
508-457-2310 (FAX)
jdenny@usgs.gov