| Identifier | 1987-018-FA | ||||||||
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| Alternate names | FRNL 87-5 | ||||||||
| Purpose | This cruise was the fifth in a series of five cruises aimed at surveying the Exclusive Economic Zone (EEZ) of the eastern United States. Permission was granted by the goverment of the Bahamas to extend the survey south into Bahamian waters in order to map prominent geologic features more completely. | ||||||||
| Location | Hatteras Canyon, Continental slope and rise, North Carolina, South Carolina, Georgia, Florida, Blake Plateau, Blake Escarpment, United States EEZ, Northeast Providence Channel, Bahamas, North America, North Atlantic; | ||||||||
| Summary | The main survey instrument was GLORIA II, a long-range sidescan sonar system that is well suited to deep-water reconnaissance mapping of large areas. A seismic reflection profiler, magnetometer, and 3.5 and 10 kHz echo sounders were operated simultaneously with the GLORIA system throughout most of the cruise. Superb weather conditions and minimum equipment down time combined to make a most successful cruise. About three days were spent surveying gaps in the previous cruise's coverage. Of the remaining 14 days, 12 were spent surveying the Blake Plateau and Escarpment within the U.S. EEZ and 2 were used to survey the southern extension of the escarpment into Bahamian waters. The GLORIA system was run well into the Northeast Providence Channel before docking at Nassau. Figure 1 shows the ship's tracks for the entire cruise. Preliminary mosaics of the overlapping GLORIA image data were built by hand onboard the ship. A photograph of the southern part of the mosaic, which includes all of the imagery collected in Bahamian waters, is shown in Figure 2. Further corrections and enhancements will be done at the shore facility in Woods Hole where a digital mosaic can be produced. United States Ambassador Hallett held a reception for the Governor General of the Bahamas onboard the FARNELLA at the Nassau dock. The guest list included: Governor General, His Excellency Sir Gerald Cash; His Excellency the British High Commissioner Mr. Mays; Minister of Economic Affairs Alfred Maycock; Commodore Leon Smith, Royal Bahamas Defense Force; Mr. Francis Garraway, Dept. of Lands & Surveys; Mr. Ronald Thompson, Dir., Dept. of Agriculture, Fisheries & Cooperatives; Mr. Colyn Higgs, Dep. Dir., Dept. of Agriculture, Fisheries & Cooperatives; Mrs. Judy Blair, College of the Bahamas, Natural Science Div.; Ms. Joy Chaplin, College of the Bahamas, Natural Science Div.; Mr. Peter Key, Government High School; Mr. Gary Lawson, Bahamas National Trust; Mr. Richard Kench, Ministry of Works; and Mrs. Camille Cartwright, Ministry of Economic Affairs. GLORIA sidescan sonar: 6419 km; Airgun: 6419 km; 3.5 kHz: 6419 km; 10 kHz: 6419 km; XBT: 23; Magnetics: 6419 km. | ||||||||
| Info derived | Sea floor map; Morphology; | ||||||||
| Comments | A large part of the survey area is covered by the Blake Plateau, a broad, shallow (800-1200 m) carbonate bank that lies east of Florida and north of Grand Bahama and Great Abaco Islands. The eastern edge of the plateau is bounded by a nearly vertical 3500 m cliff called the Blake Escarpment. Original Center People field contained: William Dillon, Kathy Scanlon, Page Valentine, Linda Sheetz, Renato Diaz, Michael Boyle. Project = GLORIA Survey, GLORIA Survey | ||||||||
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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 | Kathryn Scanlon CatanachWilliam P Dillon | ||||||
| Crew members |
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| Affiliate staff | Linda Sheetz, Renato Diaz, Michael Boyle; Inst. Of Oceanographic Sciences, U.K.: Quentin Huggett, Derek Bishop, Christopher Flewellen, Doriel Jones, Graham Lake, Emma Woodward |
| Data category: | Sonar, Seismics, Environmental Data, Location-Elevation, Electro-Magnetic |
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| Data type: | Sidescan, Sub Bottom Profiler, Air Gun / Water Gun, Boomer, Bubble Gun, Sparker, Temperature, Navigation, Magnetics |
| Name | Description |
|---|---|
| Cruise report | Chief Scientist's report including personnel, cruise objectives, personnel, schedule of delivery for data, and tabulated information. |
| Cruise report | PDF version of Chief Scientist's report including personnel, cruise objectives, personnel, schedule of delivery for data, and handwritten tabulated information. Also includes a trackmap and some sidescan imagery. |
| Cruise report | Extensive IOS Party Chief's cruise narrative describing personnel, ship movement, data acquisition, equipment performance, generalized geology, XBT locations, and trackmaps. |
| Data inventory | Cruise Curator's inventory of field data items with some handwritten notes. |
| XBT locations and plots | Expendable bathythermograph plots of drops conducted during May 10-27, 1987. |
| GLORIA log | GLORIA Engineer's log describing equipment performance, data acquisition notes (labeled as Watchstander's Log). |
| Geophysics log | Watchstander's geophysical log of line and tape changes and comments. Cover indicates MASSCOMP Error log - not present as part of this scan. |
| Computer error log | Printout of MassComp computer airgun acquisition system tape error log with some handwritten notes. |
| XBT locations | List of XBT locations for FARNELLA Legs 87-2, 87-3, 87-4, and 87-5 (FAs 87008, 87010, 87015, and 87018). Disk dump printout. |
| Navigation log | Navigation log including fixes, start and end of line, course changes. |
| Equipment | Usage description | Data types | Datasets |
|---|---|---|---|
| GLORIA sidescan | Sidescan | 4 | |
| 3.5 kHz | Sub Bottom Profiler | 2 | |
| Air gun | Air Gun / Water Gun | (no data reported) | |
| Geomechanique streamer | Air Gun / Water Gun | 4 | |
| XBT | Temperature | (no data reported) | |
| ABC navigation system | Navigation | 7 | |
| Geometrics G-856 magnetometer | Magnetics | 1 | |
| Northstar 7000 LORAN-C | Navigation | (no data reported) | |
| Megapulse Accufix 500 LORAN-C | Navigation | (no data reported) | |
| Magnavox satellite positioning system | Navigation | (no data reported) |
| Dataset name | Equipment | Description | Dataset contact |
|---|---|---|---|
| 1987-018-FA-SO-001 | GLORIA sidescan | Collection of paper record displays of sidescan sonar data for lines | Nancy K. Soderberg |
| 1987-018-FA-SO-002 | GLORIA sidescan | Digital tape(s) of RAW GLORIA, SEIS, NV-BATHY-MAG, PROCESSED GLORIA, | Nancy K. Soderberg |
| 1987-018-FA-SO-003 | GLORIA sidescan | CD ROM disk of GLORIA IMAGES, GLORIA ATLANTIC GEOTIFF, GLORIA US EAST COAST GEOTIFF, GLORIA IMAGES, GLORIA/MOSAIC 1-10;TIF,*, GLORIA/MOSAIC 11-23;TIF,*, | Nancy K. Soderberg |
| GLORIA sidescan data | GLORIA sidescan | Linda P McCarthy | |
| 1987-018-FA-BA-001 | 3.5 kHz | CD ROM disk of GLORIA IMAGES, GLORIA ATLANTIC GEOTIFF, GLORIA US EAST COAST GEOTIFF, GLORIA IMAGES, GLORIA/MOSAIC 1-10;TIF,*, GLORIA/MOSAIC 11-23;TIF,*, | Nancy K. Soderberg |
| NGDC MGD77 data | 3.5 kHz | Linda P McCarthy | |
| 1987-018-FA-SE-001 | Geomechanique streamer | microfilm of | Nancy K. Soderberg |
| 1987-018-FA-SE-002 | Geomechanique streamer | Digital tape(s) of RAW GLORIA, SEIS, NV-BATHY-MAG, PROCESSED GLORIA, | Nancy K. Soderberg |
| 1987-018-FA-SE-002-01 | Geomechanique streamer | Tape List | Nancy K. Soderberg |
| 1987-018-FA-SE-002-02 | Geomechanique streamer | Raw SEGY seismic data | Nancy K. Soderberg |
| 1987-018-FA-LN-001 | ABC navigation system | Navigation trackline plot for field activity 87018 | Nancy K. Soderberg |
| 1987-018-FA-LN-001-01 | ABC navigation system | Trackline map with days and one-hour ticks for 87-5 on 3 sheets. | Nancy K. Soderberg |
| 1987-018-FA-LN-001-02 | ABC navigation system | Trackmap for US East Coast FARNELLA cruises 87-1 (FA 87004), 87-2 (FA 87008), 87-3 (FA 87010), 87-4 (FA 87015), and 87-5 (FA 87018). | Nancy K. Soderberg |
| 1987-018-FA-LN-001-03 | ABC navigation system | Trackline map colored by leg for FARNELLA cruises 87-1, 87-2, 87-3, 87-4, and 87-5. | Nancy K. Soderberg |
| 1987-018-FA-LN-002 | ABC navigation system | Digital tape(s) of RAW GLORIA, SEIS, NV-BATHY-MAG, PROCESSED GLORIA, | Nancy K. Soderberg |
| 1987-018-FA-LN-002-01 | ABC navigation system | Navigation file containing two-minute fixes. | Nancy K. Soderberg |
| Nav data | ABC navigation system | Linda P McCarthy | |
| NGDC MGD77 data | Geometrics G-856 magnetometer | Linda P McCarthy |
