Planned maintenance — 18th January 2018 12:00 to 22nd January 2018 09:00 [more]

Cruise inventory

RV Farnella 4/85

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Farnella (74AE)
Cruise identifier4/85
Cruise period1985-11-04 — 1985-12-03
Port of departureSan Juan, Puerto Rico
Port of returnSan Juan, Puerto Rico
ObjectivesSecond 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.

Northern edge of the EEZ which is the southern edge of the Nares Abyssal Plain. The area is geologically and morphologically less complicated. Near ideal sound propagation conditions. Routine GLORIA surveying
Chief scientistDouglas G Masson (Institute of Oceanographic Sciences Wormley Laboratory), Kathy Scanlon (United States Geological Survey Center for Coastal and Marine Geology)
ProjectGLORIA studies of the Exclusive Economic Zone (EEZ)
Coordinating bodyUSGS and IOS
Cruise reportRV Farnella 4/85 cruise report farnella1to4_85.pdf — access key 'C' (0.59 MB) 
Ocean/sea areas 
GeneralNorth West Atlantic Ocean (limit 40W)
Caribbean Sea
Gulf of Mexico
SpecificGulf of Mexico and off Puerto Rico
Track chartsRV Farnella 4/85 cruise track — farnella1to4_85track.pdf (0.10 MB) 
Geology and geophysics 
Single-beam echosoundingQuantity: number of surveys = 1
Description: 10kHz precision echo sounder
Long/short range side scan sonarQuantity: number of surveys = 1
Description: 3.5kHz high resolution profiler
Single channel seismic reflectionQuantity: number of surveys = 1
Description: GLORIA profiler and seismic reflection profiler were used.
Magnetic measurementsQuantity: number of surveys = 1
Description: magnetometer