Survey Identifier: C2605
Format Acronym: MGD77
Data Center File Number: 01010251
Parameters Surveyed Code: 55531
File Creation Date (yyyymmdd): 19901210
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERV./URI
Country: United States
Platform Name: R/V Conrad
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): Dr. Alain Mauffret
Project: c2605
Funding: NSF/IFREMER
Survey Departure Date (yyyymmdd): 19850403
Port of Departure: Bridgetown, Barbados
Survey Arrival Date (yyyymmdd): 19850505
Port of Arrival: Panama City, Panama
Navigation Instrumentation: GPS, TRANSIT SATELLITE
Bathymetry Instrumentation: seabeam vertical beam
Additional Forms of Bathymetric Data: 3.5 PDR
Magnetics Instrumentation: proton procession
Gravity Instrumentation: Bell BGM-3
Topmost Latitude of Survey: +19
Bottommost Latitude: +10
Leftmost Longitude: -077
Rightmost Longitude: -059
General Digitizing Rate of Bathymetry: 10
General Sampling Rate of Bathymetry: VAR W/ DEPTH
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 0
General Digitizing Rate of Magnetics: 10
Reference Field Code: 4
General Digitizing Rate of Gravity: 10
General Sampling Rate of Gravity: 60
Theoretical Gravity Formula Code: 2
Reference System Code: 2
Additional Documentation: NGDC has multibeam bathymetric data for this cruise, however the tracklines, found here in GEODAS do not exactly correspond to the multibm data available. Single beam bathymetric data from DATE/TIME 8504261732083 to 8505020114017 are, from URI processed multibeam data with an interpolation scheme OF 1 MINUTE, EXTRACTIONS CLOSEST TO THE MINUTE (VERTICAL BM). No multibeam bathymetry, available for this survey east of 60.659 degrees west. Other data reported to, have been collected on this cruise were single-channel seismics.
Number of Data Records: 41049
Min/Max Data Record:
Date: 1985 04 04
Latitude: +10.37229
Longitude: -76.49414
Bathymetry, 2- Way Traveltime: 000548
Bathymetry, Corrected Depth: 41.0
Magnetics Total Field, 1st Sensor: 360130
Magnetics Residual Field: -07956
Observed Gravity: 9782061
Free-Air Anomaly: -1702
Min/Max Data Record:
Date: 1985 05 02
Latitude: +18.58816
Longitude: -59.63279
Bathymetry, 2- Way Traveltime: 073293
Bathymetry, Corrected Depth: 5567.0
Magnetics Total Field, 1st Sensor: 417060
Magnetics Residual Field: +04430
Observed Gravity: 9787150
Free-Air Anomaly: +2398