Survey Identifier: C2909

Format Acronym: MGD77
Data Center File Number: 01010297
Parameters Surveyed Code: 55131
File Creation Date (yyyymmdd): 19901121
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. J. Sempere
Project: c2909
Funding: NSF
Survey Departure Date (yyyymmdd): 19880915
Port of Departure: Cape Verde
Survey Arrival Date (yyyymmdd): 19881014
Port of Arrival: Ponta Delgada, Azores
Navigation Instrumentation: GPR, transit satellite, and furuno
Geodetic Datum/Position: dead reconing
Bathymetry Instrumentation: seabeam vertical beam
Additional Forms of Bathymetric Data: 3.5 PDR
Magnetics Instrumentation: proton procession
Topmost Latitude of Survey: +37
Bottommost Latitude: +16
Leftmost Longitude: -047
Rightmost Longitude: -024
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: Navigation for the multibeam bathymetry was adjusted to match bathymetry in, the survey area. Other data reported to have been collected on this cruise were gravity and, backscatter.
Number of Data Records: 41608

Min/Max Data Record:
Date: 1988 09 15
Latitude: +16.81883
Longitude: -46.58445
Bathymetry, 2- Way Traveltime: 020313
Bathymetry, Corrected Depth: 1528.0
Magnetics Total Field, 1st Sensor: 339550
Magnetics Residual Field: -04870

Min/Max Data Record:
Date: 1988 10 13
Latitude: +36.08116
Longitude: -24.99794
Bathymetry, 2- Way Traveltime: 083926
Bathymetry, Corrected Depth: 6385.0
Magnetics Total Field, 1st Sensor: 430770
Magnetics Residual Field: +06470