Survey Identifier: A2093L07
Format Acronym: MGD77
Data Center File Number: 02020066
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.ELIZABETH BUNCE
Project: CRUISE93, LEG 7
Funding: NSF
Survey Departure Date (yyyymmdd): 19760408
Port of Departure: PORT LOUIS,MAURITIUS
Survey Arrival Date (yyyymmdd): 19760506
Port of Arrival: MOMBASA, KENYA
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: +05
Bottommost Latitude: -21
Leftmost Longitude: +039
Rightmost Longitude: +058
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=+.39MGAL/DAY BIAS=+93.1
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: 16974
Min/Max Data Record:
Date: 1976 04 08
Latitude: -20.12778
Longitude: +39.63250
Bathymetry, 2- Way Traveltime: 000550
Bathymetry, Corrected Depth: 41.0
Magnetics Total Field, 1st Sensor: 341900
Magnetics Residual Field: -06990
Observed Gravity: 9779638
Free-Air Anomaly: -1166
Min/Max Data Record:
Date: 1976 05 06
Latitude: +4.64938
Longitude: +57.46670
Bathymetry, 2- Way Traveltime: 068375
Bathymetry, Corrected Depth: 5158.0
Magnetics Total Field, 1st Sensor: 367390
Magnetics Residual Field: +00970
Observed Gravity: 9788635
Free-Air Anomaly: +2200