Survey Identifier: A2093L10


Format Acronym: MGD77
Data Center File Number: 02020075
Parameters Surveyed Code: 55511
File Creation Date (yyyymmdd): 1982 525
Source Institution: WOODS HOLE OCEANOGRAPHIC INSTITUTION
Country: U.S.A.
Platform Name: ATLANTIS II
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DR.BRUCE WARREN
Project: CRUISE 93, LEG 10
Funding: ONR
Survey Departure Date (yyyymmdd): 19760701
Port of Departure: MOMBASA,KENYA
Survey Arrival Date (yyyymmdd): 19760720
Port of Arrival: PORT LOUIS,MAURITUS
Navigation Instrumentation: 706 SATELLITE RECEIVER
Geodetic Datum/Position: SAT.MERGED WITH SHIP VELOCITY
Bathymetry Instrumentation: PRIM-3.5,SEC-12, WIDE BEAM 1 SEC.SWEEP
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: VARIAN PROTON-PRECESSION MAG.V-85
Additional Forms of Magnetics Data: ANALOG RECORDS, PUNCHED TAPE
Gravity Instrumentation: ARPA-1 VIBRATING STRING ACCELEROMETER
Additional Forms of Gravity Data: ANALOG RECORDS, PUNCHED TAPE
Topmost Latitude of Survey: -04
Bottommost Latitude: -31
Leftmost Longitude: +039
Rightmost Longitude: +064
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: 010
General Sampling Rate of Magnetics: 03
Magnetic Sensor Tow Distance: 250
Reference Field Code: 04
Reference Field: IGRF 1975
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: 3
Reference System: IGSN 71
Corrections Applied: DRIFT=+.3MGAL/DAY BIAS=+134.1
Departure Base Station Gravity: 9790391
Departure Base Station Description: WHOI BASE STATION 896
Arrival Base Station Gravity: 9789117
Arrival Base Station Description: WHOI BASE STATION 897
Number of Data Records: 10167

Min/Max Data Record:
Date: 1976 07 01
Latitude: -30.98016
Longitude: +39.70070
Bathymetry, 2- Way Traveltime: 004050
Bathymetry, Corrected Depth: 308.0
Magnetics Total Field, 1st Sensor: 341950
Magnetics Residual Field: -09860
Observed Gravity: 9780043
Free-Air Anomaly: -1102

Min/Max Data Record:
Date: 1976 07 20
Latitude: -4.07837
Longitude: +63.22700
Bathymetry, 2- Way Traveltime: 080100
Bathymetry, Corrected Depth: 6063.0
Magnetics Total Field, 1st Sensor: 396660
Magnetics Residual Field: +05010
Observed Gravity: 9794501
Free-Air Anomaly: +1563