Survey Identifier: A2093L01
Format Acronym: MGD77
Data Center File Number: 02020060
Parameters Surveyed Code: 55511
File Creation Date (yyyymmdd): 1982 524
Source Institution: WOODS HOLE OCEANOGRAPHIC INST
Country: U.S.A.
Platform Name: ATLANTIS II
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DR.HANS SCHOUTEN
Project: CRUISE 93, LEG 1
Funding: NSF, ONR
Survey Departure Date (yyyymmdd): 19751028
Port of Departure: WOODS HOLE, U.S.A.
Survey Arrival Date (yyyymmdd): 19751113
Port of Arrival: RECIFE,BRAZIL
Navigation Instrumentation: SATELLITE RECEIVER, DR
Geodetic Datum/Position: SAT. AND DR MERGED WITH SHIP VELOCITY
Bathymetry Instrumentation: PRIM-3.5,SEC-12, WIDE BEAM 1 SEC SWEEP
Additional Forms of Bathymetric Data: ANALOG RECORDS, PUNCHED TAPES
Magnetics Instrumentation: VARIAN PROTON-PRECESSION MAGNETOMETER
Additional Forms of Magnetics Data: ANALOG RECORDS, PUNCHED TAPES
Gravity Instrumentation: ARPA VIBRATING STRING ACCELEROMETER
Additional Forms of Gravity Data: ANALOG RECORDS, PUNCHED TAPE
Topmost Latitude of Survey: +42
Bottommost Latitude: -02
Leftmost Longitude: -072
Rightmost Longitude: -035
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: ONE/SECOND
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: 5- MINUTES AND BREAK SLOPE
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 60
Magnetic Sensor Tow Distance: 250
Reference Field Code: 03
Reference Field: IGRF 1965
Method of Applying Residual Field: LINER INTERPOLATION WITHIN DEGREE SQUARE
General Digitizing Rate of Gravity: 050
General Sampling Rate of Gravity: 60
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IGA SYSTEM 1967
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Corrections Applied: DRIFT=+.62MGAL/DAY BIAS=-.3
Departure Base Station Gravity: 9803124
Departure Base Station Description: WHOI BASE STATION 317
Arrival Base Station Gravity: 9781619
Arrival Base Station Description: WHOI BASE STATION 866
Number of Data Records: 14642
Min/Max Data Record:
Date: 1975 10 28
Latitude: -1.43400
Longitude: -71.90130
Bathymetry, 2- Way Traveltime: 000375
Bathymetry, Corrected Depth: 28.0
Magnetics Total Field, 1st Sensor: 276680
Magnetics Residual Field: -07500
Observed Gravity: 9779921
Free-Air Anomaly: -0841
Min/Max Data Record:
Date: 1975 11 13
Latitude: +41.29990
Longitude: -35.86020
Bathymetry, 2- Way Traveltime: 083950
Bathymetry, Corrected Depth: 6391.0
Magnetics Total Field, 1st Sensor: 558970
Magnetics Residual Field: +01440
Observed Gravity: 9802821
Free-Air Anomaly: +4183