| Identifier | 1992-023-FA | ||||||||
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| Alternate names | CH 12-92 | ||||||||
| Purpose | To obtain digital seismic profiles in the area of gas hydrate development on the continental rise off North and South Carolina, and to test and obtain data from the new USGS/Datasonics deep-towed sidescan-sonar system. | ||||||||
| Location | Cape Fear slide, Blake Ridge, United States, North America, North Atlantic; | ||||||||
| Summary | Two research areas were studied; to the north at the head of the Cape Fear slide and to the south on the crest of Blake Ridge. The seismic profiling system worked perfectly and allowed collection of 163 km of excellent quality seismic data at the Cape Fear slide site and 1204 km at the Blake Ridge site. Unfortunately the outer section of the streamer was damaged during operations (presumably it went into the ship's propellers), but the damaged section was replaced by a spare section. Four sidescan sonar test lowerings were carried out. During the first 3 lowerings, only the port side provided data at operating depth. A leaking connector was identified and repaired. During the last day, the sidescan worked properly and collected 91 km data. Weather conditions prevented lowering of the sidescan for much of the cruise and one day was lost to Tropical Storm Earl. | ||||||||
| Comments | Information from Foghorn: 2-channel seismic reflection profiling system w/160 cu. in. airgun, 30 kHz deep-towed sidescan sonar, 3.5 kHz profiling system | ||||||||
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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 | William C SchwabWilliam P Dillon | ||||||||
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| Affiliate staff | PMG - Larry Kooker, John Gann; Timothy Boynton - Duke/UNC; Mark Parent - Datasonics; Fred Hegg - Datasonics |
| Data category: | Location-Elevation, Seismics, Sonar |
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| Data type: | Navigation, Air Gun / Water Gun, Sub Bottom Profiler, Sidescan, Multichannel |
| Name | Description |
|---|---|
| Navigation printout | Columnar printout of navigation data, without headings. |
| Q-MIPS log | Notes on navigation, linking files by name with operation times and events. |
| Cruise report | General summary of the cruise with page size trackline plots. Includes personnel and equipment. |
| Geophysics log | Overall catalog of data, with log of seismic operation. |
| Equipment | Usage description | Data types | Datasets |
|---|---|---|---|
| Multichannel seismics | Multichannel | 7 | |
| Air gun | Air Gun / Water Gun | (no data reported) | |
| 3.5 kHz | Sub Bottom Profiler | (no data reported) | |
| SIS-7000 sidescan | Sidescan | 1 | |
| Loran-C | Navigation | 5 |
| Dataset name | Equipment | Description | Dataset contact |
|---|---|---|---|
| 1992-023-FA-SE-001 | Multichannel seismics | microfilm of | Nancy K. Soderberg |
| 1992-023-FA-SE-002 | Multichannel seismics | Digital tape(s) of AIRGUN L1, AIRGUN L2, AIRGUN L2-3, AIRGUN L3-5, AIRGUN L6-7, AIRGUN L8-12, AIRGUN L13-15, AIRGUN L15-21, AIRGUN L22A, AIRGUN L23B-23, AIRGUN L1-5, AIRGUN L6-15B, AIRGUN L15C-23, NAV GPS+LORAN, SIS7000 SSS L24-25, SIS7000 SSS L26-27, SIS7000 SSS RAW+PROC, | Nancy K. Soderberg |
| 1992-023-FA-SE-002-01 | Multichannel seismics | CD ROM disk of PROCESSED CDP, NAV, | Nancy K. Soderberg |
| 1992-023-FA-SE-002-02 | Multichannel seismics | Processed SEG-Y Data | Gregory K Miller |
| 1992-023-FA-SE-003 | Multichannel seismics | Collection of paper record displays of seismic data( AIR) for lines | Nancy K. Soderberg |
| Air gun data | Multichannel seismics | Linda P McCarthy | |
| Air gun data 2 | Multichannel seismics | Linda P McCarthy | |
| 1992-023-FA-SO-001 | SIS-7000 sidescan | Digital tape(s) of AIRGUN L1, AIRGUN L2, AIRGUN L2-3, AIRGUN L3-5, AIRGUN L6-7, AIRGUN L8-12, AIRGUN L13-15, AIRGUN L15-21, AIRGUN L22A, AIRGUN L23B-23, AIRGUN L1-5, AIRGUN L6-15B, AIRGUN L15C-23, NAV GPS+LORAN, SIS7000 SSS L24-25, SIS7000 SSS L26-27, SIS7000 SSS RAW+PROC, | Nancy K. Soderberg |
| 1992-023-FA-LN-001-01 | Loran-C | Cape Fear Slide trackmap of seismic lines 1, 2 and 5. | Nancy K. Soderberg |
| 1992-023-FA-LN-001-02 | Loran-C | Blake Ridge area trackmap of seismic lines 6-23. | Nancy K. Soderberg |
| 1992-023-FA-LN-002-01 | Loran-C | Processed shotpoint navigation file prepared by MMS, New Orleans, LA in segp1 format. | Nancy K. Soderberg |
| 1992-023-FA-LN-002-02 | Loran-C | Navigation files for each line. | Nancy K. Soderberg |
| Nav data | Loran-C | Linda P McCarthy |
