Survey Identifier: C2515

Format Acronym: MGD77
Data Center File Number: 01010276
Parameters Surveyed Code: 51531
File Creation Date (yyyymmdd): 19901129
Source Institution: Lamont-Doherty Geological Observatory
Country: United States
Platform Name: R/V Conrad
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): Dr. Feden (NRL)
Project: c2515
Funding: NRL/ONR
Survey Departure Date (yyyymmdd): 19841226
Port of Departure: Belem, Brazil
Survey Arrival Date (yyyymmdd): 19850109
Port of Arrival: Ascension Island
Navigation Instrumentation: TRANSIT SATELLITE, GPS
Geodetic Datum/Position: dead reckoning
Bathymetry Instrumentation: seabeam
Additional Forms of Bathymetric Data: 3.5 PDR
Gravity Instrumentation: Bell BGM-3
Topmost Latitude of Survey: +00
Bottommost Latitude: -10
Leftmost Longitude: -049
Rightmost Longitude: -013
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 Gravity: 10
General Sampling Rate of Gravity: 60
Theoretical Gravity Formula Code: 2
Reference System Code: 2
Reference System: Potsdam
Additional Documentation: Other data reported to have been collected on this cruise were single-channel, seismics and dredges.
Number of Data Records: 23291

Min/Max Data Record:
Date: 1984 12 27
Latitude: -9.27599
Longitude: -48.51848
Bathymetry, 2- Way Traveltime: 003853
Bathymetry, Corrected Depth: 292.0
Observed Gravity: 9779351
Free-Air Anomaly: -0613

Min/Max Data Record:
Date: 1985 01 12
Latitude: -0.44560
Longitude: -13.36599
Bathymetry, 2- Way Traveltime: 076373
Bathymetry, Corrected Depth: 5776.0
Observed Gravity: 9783706
Free-Air Anomaly: +1593