Survey Identifier: A2093L06
Format Acronym: MGD77
Data Center File Number: 02020065
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.HARTLEY HOSKINS
Project: CRUISE 93, LEG 6
Funding: ONR
Survey Departure Date (yyyymmdd): 19760312
Port of Departure: PORT LOUIS, MAURITIUS
Survey Arrival Date (yyyymmdd): 19760404
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: -20
Bottommost Latitude: -29
Leftmost Longitude: +057
Rightmost Longitude: +075
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=+.58MGAL/DAY BIAS=+75.8
Departure Base Station Gravity: 9789089
Departure Base Station Description: WHOI BASE STATION 893
Arrival Base Station Gravity: 9780312
Arrival Base Station Description: WHOI BASE STATION 894
Number of Data Records: 19053
Min/Max Data Record:
Date: 1976 03 12
Latitude: -28.05183
Longitude: +57.23760
Bathymetry, 2- Way Traveltime: 001850
Bathymetry, Corrected Depth: 139.0
Magnetics Total Field, 1st Sensor: 365800
Magnetics Residual Field: -08080
Observed Gravity: 9780000
Free-Air Anomaly: -0754
Min/Max Data Record:
Date: 1976 04 04
Latitude: -20.12497
Longitude: +74.25850
Bathymetry, 2- Way Traveltime: 069100
Bathymetry, Corrected Depth: 5213.0
Magnetics Total Field, 1st Sensor: 446700
Magnetics Residual Field: +01720
Observed Gravity: 9792015
Free-Air Anomaly: +2767