USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 1994-031-FA

Other ID: 94-12

Status: Completed

Organization(s): USGS, Woods Hole Coastal and Marine Science Center

Funding Program(s):

Principal Investigator(s): David Twichell

Affiliate Investigator(s): Mohsen Badiey - U DE

Information Specialist(s):

Data Type(s): Sonar: Sidescan, Sonar: Single Beam, Location-Elevation: Navigation

Scientific Purpose/Goals: Sidescan survey LEO-15 area surveyed June 1991 to document storm changes to inner shelf setting.


Start Date: 1994-05-24

Start Port/Location: Lewes, DE

End Date: 1994-05-30

End Port/Location: Lewes, DE

Equipment Used: Klein 531 sidescan, SIS-7000 sidescan, Q-MIPS sidescan sonar system, ODOM 200 kHz depth recorder, DGPS, Megapulse Accufix 500 LORAN-C

Information to be Derived:

Summary of Activity and Data Gathered: This was a 2-ship multidisciplinary acoustical survey: CTDs during daylight, sidescan sonar at night. Early sidescan problems were solved with second QMIPS trigger box. Entire area was successfully surveyed at 150-m spacing.

Staff: David Twichell, Kenneth E. Parolski

Affiliate Staff:
Mohsen Badiey - Ch. Sci.
4 grad students - U DE; Steve Forsythe
tech. - NRL-Orlando

Notes: Original Center People field contained: Dave Twichell - co-chief sci., Ken Parolski - marine tech.


Little Egg Inlet, New Jersey, United States, North America, North Atlantic;

North: 39.55 South: 39.4 West: -74.3 East: -74.2


photo of Cape Henlopen
Cape Henlopen


Paskevich, V., Twichell, David C., Badiey, Mohsen, Parolski, Ken, and Danforth, William, 1996, Sidescan sonar and navigation field data collected during CAPE HENLOPEN 94-12 cruise (24-30 May, 1994): URL:


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Klein 531 sidescan --- Sidescan
1994-031-FA-SO-001 ( Sidescan Sonar Data )
SIS-7000 sidescan --- Sidescan
Q-MIPS sidescan sonar system --- Sidescan
ODOM 200 kHz depth recorder --- Single Beam
DGPS --- Navigation
1994-031-FA-LN-001-01 ( Processed navigation)
1994-031-FA-LN-002 ( Loran C navigation printout with 5 minute fixes, latitude, longitude, time delays, bearing, speed, etc. )
Megapulse Accufix 500 LORAN-C --- Navigation