RV Farnella 3/85
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Farnella (74AE) |
| Cruise identifier | 3/85 |
| Cruise period | 1985-10-02 — 1985-11-02 |
| Status | Completed |
| Port of departure | Tampa, United States |
| Port of return | San Juan, Puerto Rico |
| Purpose | Research |
| Objectives | Second year of a six-year co-operative research programme between the United States Geological Survey (USGS) and IOS to survey the exclusive economic zone (EEZ).
GLORIA sonar coverage of US EEZs in the Gulf of Mexico and off Puerto Rico (also part of Cayman Trough). Also, single channel seismic reflection profiles with 80 or 160 cubic inch airgun, 3.5kHz high resolution profiles and 10kHz narrow beam echo-sounding profiles recorded, along with continuous magnetic anomaly profiles. Objectives: Leg 3 was split into two parts. The first wholly devoted to the completion of GLORIA cover of the Gulf of Mexico. The second part would include short reconniassance surveys of the Cayman Trough and the Hispaniola Basin during an extended passage line between Key West and Puerto Rico. 1. To complete the survey of the West Florida Escarpment and to examine the processes both past and present contributing to the morphology of the shelf and slope. 2. To complete the GLORIA cover of the Walker-Massingill slide, a submarine failure of the mid and lower Mississippi Fan identified in earlier GLORIA work. |
| Chief scientist | David C Twichell (United States Geological Survey Center for Coastal and Marine Geology), Lindsay M Parson (Institute of Oceanographic Sciences Wormley Laboratory) |
| Project | GLORIA studies of the exclusive economic zone |
| Coordinating body | USGS and IOS |
| Cruise report |  (0.59 MB) |
| Ocean/sea areas | |
| General | Caribbean Sea Gulf of Mexico |
| Specific | Gulf of Mexico and off Puerto Rico |
| Track charts | (0.10 MB) |
| Measurements | |
| Geology and geophysics | |
| Single-beam echosounding | Quantity: number of surveys = 1 Description: Leg A: 10kHz echosounder deployed |
| Long/short range side scan sonar | Quantity: number of surveys = 1 Description: Leg A: 3.5 fish deployed |
| Long/short range side scan sonar | Quantity: number of surveys = 1 Description: Leg B: 3.5kHz fish deployed |
| Single channel seismic reflection | Quantity: number of surveys = 1 Description: Leg A: GLORIA profiler was used. |
| Single channel seismic reflection | Quantity: number of surveys = 1 Description: Leg B: GLORIA profiler was used |
| Magnetic measurements | Quantity: number of surveys = 1 Description: Leg B: magnetometer |
