Survey Identifier: C2510
Format Acronym: MGD77
Data Center File Number: 01010245
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19901129
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. J Austin/B. TUCHOLKE
Project: c2510
Funding: NSF
Survey Departure Date (yyyymmdd): 19840809
Port of Departure: St John's, Newfoundland
Survey Arrival Date (yyyymmdd): 19840908
Port of Arrival: Bermuda
Navigation Instrumentation: TRANSIT SATELLITE, LORAN
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: +48
Bottommost Latitude: +32
Leftmost Longitude: -065
Rightmost Longitude: -044
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: Single beam bathymetry data from DATE/TIME 8408100001000 to 8408112012000 and, from 8409042214000 to 8409080843983 are from URI processed multibeam data with, an interpolation scheme of 1 MINUTE EXTRACTIONS CLOSEST TO THE MINUTE, (VERTICAL BEAM), NGDC has multibeam bathymetric data for this cruise, however the tracklines, found here in GEODAS do not exactly correspond to the multibm data available. Other data collected on this cruise are multi-channel seismics.
Number of Data Records: 43581
Min/Max Data Record:
Date: 1984 08 10
Latitude: +32.39466
Longitude: -64.49402
Bathymetry, 2- Way Traveltime: 000867
Bathymetry, Corrected Depth: 65.0
Magnetics Total Field, 1st Sensor: 484990
Magnetics Residual Field: -17365
Observed Gravity: 9801350
Free-Air Anomaly: -0569
Min/Max Data Record:
Date: 1984 09 08
Latitude: +47.01796
Longitude: -44.44380
Bathymetry, 2- Way Traveltime: 071613
Bathymetry, Corrected Depth: 5428.0
Magnetics Total Field, 1st Sensor: 514470
Magnetics Residual Field: +01849
Observed Gravity: 9807638
Free-Air Anomaly: +1088