Survey Identifier: C2614
Format Acronym: MGD77
Data Center File Number: 01010260
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19901127
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. S Lewis
Project: c2614
Funding: NSF
Survey Departure Date (yyyymmdd): 19851201
Port of Departure: Hong Kong
Survey Arrival Date (yyyymmdd): 19851230
Port of Arrival: Singapore
Navigation Instrumentation: GPS, TRANSIT SATELLITE
Geodetic Datum/Position: dead reckoning
Bathymetry Instrumentation: seabeam
Additional Forms of Bathymetric Data: 3.5 PDR
Magnetics Instrumentation: proton procession
Gravity Instrumentation: Bell BGM-3
Topmost Latitude of Survey: +23
Bottommost Latitude: +03
Leftmost Longitude: +105
Rightmost Longitude: +119
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
Reference Field: IGRF-75
General Digitizing Rate of Gravity: 10
General Sampling Rate of Gravity: 60
Theoretical Gravity Formula Code: 2
Reference System Code: 2
Reference System: Potsdam
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. Although not indicated by a GEODAS trackline plot for bathymetry, additional, multibeam bathymetry is available between 8.70 and 6.88 degrees N. Other data reported to have been collected on this cruise were multi-channel, seismics, single-channel seismics, and heat flow.
Number of Data Records: 40758
Min/Max Data Record:
Date: 1985 12 01
Latitude: +3.16739
Longitude: +105.40232
Bathymetry, 2- Way Traveltime: 000533
Bathymetry, Corrected Depth: 40.0
Magnetics Total Field, 1st Sensor: 403450
Magnetics Residual Field: -03657
Observed Gravity: 9781117
Free-Air Anomaly: -0399
Min/Max Data Record:
Date: 1985 12 29
Latitude: +22.50824
Longitude: +118.38586
Bathymetry, 2- Way Traveltime: 059281
Bathymetry, Corrected Depth: 4457.0
Magnetics Total Field, 1st Sensor: 443350
Magnetics Residual Field: +06788
Observed Gravity: 9788949
Free-Air Anomaly: +1093