Other ID: DEB-89-1; DEBB 89-1
Organization(s): USGS, Woods Hole Coastal and Marine Science Center
Location: Mobile Bay, Mississippi Sound, Alabama, Mississippi, United States, Gulf of Mexico, North America, North Atlantic;
Principal Investigator(s): Harley J. Knebel
Data Type(s): Location-Elevation: Navigation, Sampling: Geology, Seismics: Boomer, Seismics: Sub Bottom Profiler
Scientific Purpose/Goals: As part of the proposed regional Coastal Dynamics Program to be conducted jointly with the State Geological Surveys of Alabama and Mississippi, the USGS conducted a pilot survey in Mobile Bay and Mississippi Sound. During this test cruise we wanted to determine if we could obtain usable acoustic profiles and records in these two shallow water environments. Both the bay and sound have very shallow water depths and extensive areas of fine-grained sediments, which contain interstitial gas.
Start Date: 1989-05-02
Start Port/Location: Dauphin Island Sea Lab, Dauphin Island, AL
End Date: 1989-05-04
End Port/Location: Dauphin Island Sea Lab, Dauphin Island, AL
Equipment Used: ORE GeoPulse, ORE 140 transceiver/1036 transducer sub-bottom profiler, Dredge, Datasonics Bubble Pulser System, Klein 531 sidescan, Megapulse Accufix 500 LORAN-C, Single channel hydrophone
Information to be Derived:
Summary of Activity and Data Gathered: The following seismic systems were tested during the first day of the cruise: (1) ORE GeoPulse System; (2) Data Sonics Bubble Pulser System; (3) ORE 3.5 kHz System; and (4) Klein Sidescan Sonar System. However, only the ORE GeoPulse and 3.5 kHz Systems were used subsequently along the survey lines. Sediment samples of the bottom were collected by Richard Hummell and Steven Parker using a bucket dredge. These samples were collected at opportune times when the ship was not underway. Originally scheduled for 4 days, the cruise was shortened to 3 days due to poor weather. 2 May: field testing various seismic systems; 9 bottom samples collected. 3 May: running survey lines using GeoPulse and 3.5 kHz sub-bottom systems; 6 bottom samples collected. 4 May: GeoPulse survey line only; 12 bottom samples collected. (Total: 4 tracklines, 27 bucket dredge grabs.)
Staff: Ronald C. Circe, Kenneth E. Parolski
Notes: Original Center People field contained: Ronald Circe (Scientist and Cruise Curator), Ken Parolski (Electronics Technician).