Field Activity Details for field activity 1979-008-FA

Other ID: NE-3-79

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Harley J. Knebel

Affiliate Investigator(s):

Information Specialist(s): Sally Needell

Data Type(s): Location-Elevation: Navigation, Seismics: Air Gun / Water Gun, Seismics: Sub Bottom Profiler

Scientific Purpose/Goals: Conduct an acoustic survey of the Potomac River to define areas of sediment accumulation, areas of sediment erosion or scour, the thickness of Holocene sediments, the internal structure of the near-surface sediments, the types of bottom topography, and the general geologic history and environmental framework of the estuary.


Start Port/Location: Coltons Point, MD

End Port/Location: Alexandria, VA

Start Date: 1979-05-14

End Date: 1979-05-30

Equipment Used: Air gun, Single channel hydrophone, Sidescan sonar, 2.5 kHz system (batfish), Raytheon radar, Loran-C, Visual navigation

Information to be Derived:

Summary of Activity and Data Gathered: The acoustic study of the Potomac River was quite successful. The boat and equipment functioned quite well and we were able to gather all the data that we set out to get. Sidescan sonar: 481 km; 7 kHz: 481 km; Airgun: 481 km; 2.5 kHz: 246 km.

Staff: Frank W. Jennings, Harley J. Knebel, Paul Loud, Sally Needell, Kenneth E. Parolski

Affiliate Staff:
Jerry Glenn - Scientist
USGS WRD-Denver; Visitors from USGS-Reston: Jim Bennett
Doug Black
Terry Edgar
Ward Hickman
Jack Reed
Robert Rowland
Wayne Webb
Wayne Newell; Visitors from Johns Hopkins University: Andy Miller
Charles Richmond

Notes: Original Center People field contained: Harley Knebel - Chief Scientist, Sally Wood - Cruise Curator, Frank Jennings - Ops Manager, Ken Parolski - Electronics Technician, Paul Loud - Captain.
Project = Small Boat Surveys, Small Boat Surveys


Potomac River, Washington D.C. to Chesapeake Bay, Maryland, Virginia, United States, North America;

North: 39.3 South: 38.3 West: -77.5 East: -76.75


photo of Neecho


Knebel, H.J., 1981, Seismic-reflection and sidescan-sonar data collected on the Potomac River, Maryland and Virginia, during May 1979: 6, download PDF.


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Sidescan sonar --- Sidescan
1979-008-FA-SO-001 ( microfilm of )
2.5 kHz system (batfish) --- Sub Bottom Profiler
Air gun --- Air Gun / Water Gun
Loran-C --- Navigation
1979-008-FA-LN-001-01 ( Four cruise trackline maps including seismic line numbers, dates and times.)
Raytheon radar --- Navigation
Visual navigation --- Navigation
Single channel hydrophone --- Air Gun / Water Gun
Bubble Gun
Sub Bottom Profiler
1979-008-FA-SE-002 ( microfilm of )
1979-008-FA-SE-001 ( Collection of paper record displays of seismic data( AIR) for lines )

USGS Coastal and Marine Geology Program