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

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.