| Identifier | 1971-006-FA | ||||||||
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| Alternate names | UGEO Leg 6; CORPUS 21 | ||||||||
| Purpose | Objectives of this cruise were: (a) to investigate the acoustic reflection characteristics of the mid-Atlantic ridge and other oceanic structures such as the Vema fracture zone and the Sierra Leone rise; (b) to correlate data from JOIDES drill holes with sub-bottom acoustic reflection profiles in oceanic areas; and (c) to extend our knowledge of sediment distribution and thickness in the deep ocean. | ||||||||
| Location | transatlantic westward crossing, Liberia, Africa, Sierra Leone Rise, Vema Fracture Zone, mid-Atlantic Ridge, JOIDES 13,26,27, Charlotte Amalie, St. Thomas, U.S. Virgin Islands, Lesser Antilles, North Atlantic; | ||||||||
| Summary | The major result so far is that various geophysical data including continuous gravity, magnetics, and seismic reflection profiles and 18 seismic refraction and wide angle reflection (sonobuoy) profiles have been successfully recorded over a number of features. Gravity and magnetics records will require computer processing to be usable. Survey lines: 1, 2, 3, 4, 5, 6, 7, and 7A. | ||||||||
| Info derived | Suspended sediment concentrations; Bathymetric maps; Magnetic intensity and gravity; Sub-bottom acoustic reflection profiles; | ||||||||
| Comments | Original Center People field contained: Martin F. Kane (Chief Sci.), Jim Robb (Geologist), Chuck O'Hara (Geologist), Frank W. Jennings (Electronic Technician). Project = International Decade of Ocean Exploration (IDOE), International Decade of Ocean Exploration (IDOE) | ||||||||
| Related activities |
1971-001-FA: Cruise legs |
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| Itinerary |
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| Bounds |
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| Organization |
384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
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| Principal investigators | Martin F. Kane | ||||||||
| Crew members |
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| Affiliate staff | USGS-Menlo Park: Harry Hill (Electronic Technician), James Nicholson (Electronic Technician), William Todd (Physical Science Technician); USGS-Denver: Gerald Evenden (Geophysicist); United Geophysical Corp. (Pasadena, CA): Trevor Hill (navigation tech.) |
| Data category: | Electro-Magnetic, Location-Elevation, Seismics |
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| Data type: | Gravity, Magnetics, Navigation, Sonobuoy, Sparker, Sub Bottom Profiler |
| Name | Description |
|---|---|
| Cruise report | Chief Scientist's cruise report of data collection and equipment notes, ship movement, personnel, data tabulations, etc. |
| Equipment | Usage description | Data types | Datasets |
|---|---|---|---|
| 3.5 kHz | Sub Bottom Profiler | 2 | |
| Sparker | Sparker | (no data reported) | |
| LaCoste-Romberg gravimeter G-179 | Gravity | 2 | |
| Varian V-75 magnetometer | Magnetics | 2 | |
| Seismic refraction | Sonobuoy | (no data reported) | |
| ITT 4007 satellite navigation | Navigation | 2 | |
| Decca radar system | Navigation | (no data reported) | |
| Single channel hydrophone | Air Gun / Water Gun, Boomer, Bubble Gun, Sparker, Sub Bottom Profiler | 2 |
| Dataset name | Equipment | Description | Dataset contact |
|---|---|---|---|
| 1971-006-FA-BA-001 | 3.5 kHz | Bathymetry data in InfoBank | Nancy K. Soderberg |
| NGDC MGD77 data | 3.5 kHz | Linda P McCarthy | |
| 1971-006-FA-GP-002 | LaCoste-Romberg gravimeter G-179 | Gravity in InfoBank | William C Steele |
| NGDC MGD77 data | LaCoste-Romberg gravimeter G-179 | Linda P McCarthy | |
| 1971-006-FA-GP-001 | Varian V-75 magnetometer | Magnetics in InfoBank | Nancy K. Soderberg |
| NGDC MGD77 data | Varian V-75 magnetometer | Linda P McCarthy | |
| 1971-006-FA-LN-001-01 | ITT 4007 satellite navigation | Trackline chart with line numbers and times. | Nancy K. Soderberg |
| 1971-006-FA-LN-002 | ITT 4007 satellite navigation | Navigation data in InfoBank | Nancy K. Soderberg |
| 1971-006-FA-SE-001 | Single channel hydrophone | Collection of paper record displays of seismic data( SONO) for lines | Nancy K. Soderberg |
| 1971-006-FA-SE-002 | Single channel hydrophone | microfilm of | Nancy K. Soderberg |
