Survey Identifier: C2509
Format Acronym: MGD77
Data Center File Number: 01010244
Parameters Surveyed Code: 55331
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. A. Shor
Project: c2509
Funding: AT&T
Survey Departure Date (yyyymmdd): 19840722
Port of Departure: L'Orient, France
Survey Arrival Date (yyyymmdd): 19840806
Port of Arrival: St. John's, Newfoundland
Navigation Instrumentation: RANGE-RANGE LORAN, TRANSIT SATELLITE
Geodetic Datum/Position: dead reckoning
Bathymetry Instrumentation: seabeam vertical beam
Additional Forms of Bathymetric Data: 3.5 PDR
Magnetics Instrumentation: proton procession
Topmost Latitude of Survey: +48
Bottommost Latitude: +40
Leftmost Longitude: -054
Rightmost Longitude: -006
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
Additional Documentation: Data for August 8, 1984 are from URI processed multibeam data. No multibeam bathymetry available between 16.250 and 19.735 degrees W. URI single beam bathymetric data from an interpolation scheme of 1 MINUTE, EXTRACTIONS CLOSEST TO THE MINUTE (VERTICAL BM), NGDC has most of the multibeam bathy data for this cruise, however the, tracklines here in GEODAS do not exactly represent the multibeam data, available from NGDC.
Number of Data Records: 32259
Min/Max Data Record:
Date: 1984 07 22
Latitude: +40.19100
Longitude: -53.09149
Bathymetry, 2- Way Traveltime: 001708
Bathymetry, Corrected Depth: 128.0
Magnetics Total Field, 1st Sensor: 466770
Magnetics Residual Field: -15267
Min/Max Data Record:
Date: 1984 08 05
Latitude: +47.83589
Longitude: -6.38271
Bathymetry, 2- Way Traveltime: 069388
Bathymetry, Corrected Depth: 5242.0
Magnetics Total Field, 1st Sensor: 508560
Magnetics Residual Field: +00080