Archive of Chirp Subbottom Data Collected During USGS Cruise MGNM 99023, Southern Long Island, NY Inner Shelf and Hudsen Shelf Valley, 26-31 July, 1999

In 1995, the USGS Woods Hole Field Center, in Cooperation with the
U.S. Army Corps of Engineers, began a program designed to map the
seafloor offshore of the New York-New Jersey metropolitan area, the
most heavily populated, and one of the most impacted coastal regions
of the United States. The ultimate goal of this program is to provide
an overall synthesis of the sea floor environment, including surficial
sediment texture, subsurface geometry, and anthropogenic impact (e.g.
ocean dumping, trawling, channel dredging). Sidescan sonar and
high-resoluion seismic reflection profiling have been used to map the
region north of about 42o10' and west of about 73o15'. The Hudson
Shelf Valley, a shallow topographic feature that cuts across the shelf
from offshore of New York to the shelf edge, was mapped using
multibeam. This regional synthesis will support a wide range of
management decisions and will provide a basis for further
process-oriented investigations.

This CD-ROM contains digital high resolution seismic reflection data
collected during the USGS MGNM 99023 cruise. The coverage is the
nearshore of Southern Long Island and the Hudson Shelf Valley. The
seismic-reflection data are stored as SEG-Y standard format that can
be read and manipulated by most seismic-processing software. Much of
the information specific to the data are contained in the headers of
the SEG-Y format files. The file system format is ISO 9660 which can
be read with DOS, Unix, and MAC operating systems with the appropriate
CD-ROM driver software installed.