| Identifier | 1978-023-FA | ||||||||
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| Alternate names | CI 7-78-1; CI 7807-1 | ||||||||
| Purpose | Study slumping or mass movements of sediments on the continental slope using high-resolution geophysical profiling gear. | ||||||||
| Location | Mid-Atlantic outer continental shelf and slope, United States, North America, North Atlantic; | ||||||||
| Summary | Slumping and mass downslope sediment movement occurs widely over the continental slope at small scale (small thickness, small displacement) as well as large scale. Individual slump features, although readily identifiable as large masses on individual seismic profiles, may have small lateral extent or may change considerably in their form and location on the slope within the 0.5 nautical mile spacing of our profiles. Continental slope topography cannot be described by dip (offshelf) profiles. Strike (longslope) lines show much rougher topography on the upper continental slope than a series of dip lines would imply. Rough and smooth upper slope topography give the same appearance on dip lines. Sidescan sonar data may show a grain of small (several meter) features paralleling the continental slope. Airgun: 2050 km; Minisparker: 2100 km; 3.5 kHz: 2100 km; Sidescan: 22 km. | ||||||||
| Info derived | Sea floor map; Morphology; | ||||||||
| Comments | Original Center People field contained: Jim Robb - Ch. Sci., Dave Twichell, John Hampson, Peter Stinger, Valerie Paskevich, Patricia Brady, Timothy Bishop, Phillip Shea, Gerard McCarthy, Nicholas Lefteriou, Alan Goodman, John Kirby. Project = Mid-Atlantic OCS Environmental Assessment, Mid-Atlantic OCS Environmental Assessment | ||||||||
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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 | James Robb | ||||||||||||||
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| Affiliate staff | Peter Stinger, Patricia Brady, Timothy Bishop, Gerard McCarthy, Nicholas Lefteriou; David Mason - WHOI |
| Data category: | Location-Elevation, Seismics, Sonar |
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| Data type: | Navigation, Air Gun / Water Gun, Sparker, Sub Bottom Profiler, Sidescan |
| Name | Description |
|---|---|
| Cruise report | Chief Scientist's cruise report including personnel, equipment description, cruise narrative, geologic observations, and trackmpap. |
| Data list | Cruise Curator's inventory of field data. |
| Navigation log | Watchstanders' navigation log. |
| Equipment | Usage description | Data types | Datasets |
|---|---|---|---|
| Air gun | Air Gun / Water Gun | (no data reported) | |
| Teledyne single-channel 300-500J 40-tip minisparker | Sparker | (no data reported) | |
| 3.5 kHz | Sub Bottom Profiler | 3 | |
| ORE sidescan | Sidescan | 1 | |
| Northstar 6000 LORAN-C | Navigation | 4 | |
| Single channel hydrophone | Air Gun / Water Gun, Boomer, Bubble Gun, Sparker, Sub Bottom Profiler | 3 |
| Dataset name | Equipment | Description | Dataset contact |
|---|---|---|---|
| 1978-023-FA-BA-001 | 3.5 kHz | Digital tape(s) of NV,BT-LAT/LON, NV-FINAL, NV-TRKCHTS, | Nancy K. Soderberg |
| 1978-023-FA-SE-004 | 3.5 kHz | Collection of paper 3.5 kHz high-resolution seismic-reflection profiles fan-folded in folders #FD0854-FD0862. | Nancy K. Soderberg |
| 1978-023-FA-SE-005 | 3.5 kHz | Collection of paper record displays of seismic data (3.5K) for lines | Nancy K. Soderberg |
| 1978-023-FA-SO-001 | ORE sidescan | Collection of paper sidescan-sonar records #FD0853, collected Sept 2-3, 1978. | Nancy K. Soderberg |
| 1978-023-FA-LN-001 | Northstar 6000 LORAN-C | Navigation trackline plot for field activity 78023 | Nancy K. Soderberg |
| 1978-023-FA-LN-001-01 | Northstar 6000 LORAN-C | Hand drawn track map with times and line numbers. | Nancy K. Soderberg |
| 1978-023-FA-LN-002 | Northstar 6000 LORAN-C | Digital tape(s) of NV,BT-LAT/LON, NV-FINAL, NV-TRKCHTS, | Nancy K. Soderberg |
| 1978-023-FA-LN-002-01 | Northstar 6000 LORAN-C | Navigation data recovered from 9 track tape | Nancy K. Soderberg |
| 1978-023-FA-SE-001 | Single channel hydrophone | analog tape of seismic data | Nancy K. Soderberg |
| 1978-023-FA-SE-002 | Single channel hydrophone | Collection of paper displays of minisparker high-resolution seismic-reflection records fan-folded in folders #FD0822-FD0844. | Nancy K. Soderberg |
| 1978-023-FA-SE-003 | Single channel hydrophone | Collection of paper airgun single-channel seismic-reflection profiles fan-folded in folders numbered FD#0845-FD0852. | Nancy K. Soderberg |
