Other ID: none
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Principal Investigator(s): David Twichell
Data Type(s): Location-Elevation: Navigation, Seismics: Boomer, Sonar: Sidescan
Scientific Purpose/Goals: Map the surface character, thickness and extent of the Mud Patch sediment lens to define the origin and present processes responsible for the development of this anomalous sediment deposit.
Start Port/Location: Atlantic City, NJ
End Port/Location: Atlantic City, NJ
Start Date: 1978-05-15
End Date: 1978-05-20
Equipment Used: Klein 531 sidescan, Loran-C, Boomer, Single channel hydrophone
Information to be Derived: Sea floor map;
Summary of Activity and Data Gathered: No sidescan lines 1-5; equipment problems. Huntec boomer: 941 km; Klein sidescan sonar: 673 km; EDO Western 60 kHz echo sounder: 941 km.
Staff: Barry Irwin, David Twichell
Univ. Delaware students: Dennis Bebel
Marion Swincki; Offshore Navigation
Inc. technicians: John Barnard
Larry Matson; Huntec technician: Dave Tullett; US Navy engineer: Nathan (Bing) Fuller
Notes: Original Center People field contained: Dave Twichell - Ch. Sci., Barry Irwin.
Block Canyon, Atlantis Canyon, Mud Patch, southern New England continental shelf, United States, North America, North Atlantic;
|North: 40.8||South: 39.9||West: -71.95||East: -69.95|
Twichell, D.C., 1980, Single-channel seismic-reflection profiles and sidescan sonar records collected during May 15-20, 1978, on the southern New England continental shelf: 2, download PDF.
|Survey Equipment||Survey Info||Data Type(s)||Data Collected|
|Klein 531 sidescan||---||Sidescan||1978-012-FA-SO-002 ( microfilm of )|
1978-012-FA-SO-001 ( Collection of paper record displays of sidescan sonar data for lines )
|Loran-C||---||Navigation||1978-012-FA-LN-001-01 ( Track map with tracklines, dates and times.)|
1978-012-FA-NL-001-04 ( Navigation Log (pdf file) Bridge Loran log.)
|Single channel hydrophone||---||Air Gun / Water Gun|
Sub Bottom Profiler
|1978-012-FA-SE-001 ( microfilm of )|
1978-012-FA-NL-001-03 ( Seismics log.)