Survey Identifier: A2093L18
Format Acronym: MGD77
Data Center File Number: 02020083
Parameters Surveyed Code: 55513
File Creation Date (yyyymmdd): 1982 428
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 DAVID ROSS
Project: CRUISE 93, LEG 18
Funding: NSF,ONR
Survey Departure Date (yyyymmdd): 19770303
Port of Departure: BANDAR ABBAS,IRAN
Survey Arrival Date (yyyymmdd): 19770326
Port of Arrival: DJIBOUTI,REPUBLIC OF DJIBOUTI
Navigation Instrumentation: 706 SATELLITE RECIEVER
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 TAPES
Seismic Instrumentation: 600 CU IN AIRGUN 5-80 HZ, 6- CHANNELS
Formats of Seismic Data: DIGITAL,ANALOG,2 CHANNEL SHEET RECORDS
Topmost Latitude of Survey: +30
Bottommost Latitude: +11
Leftmost Longitude: +043
Rightmost Longitude: +061
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: LINEAR INTERPOLATION WITHIN DEGREE SQUARE
General Digitizing Rate of Gravity: 050
General Sampling Rate of Gravity: 60
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System Code: 3
Reference System: IGSN 71
Corrections Applied: +.07MGAL/DAY-DRIFT,+232.3MGAL-BIAS
Departure Base Station Gravity: 9789971
Departure Base Station Description: 913-WHOI REF. REPORT 74-11
Arrival Base Station Gravity: 9782401
Arrival Base Station Description: 914-WHOI REF.REPORT 74-11
Number of Data Records: 11301
Min/Max Data Record:
Date: 1977 03 03
Latitude: +11.68513
Longitude: +43.05600
Bathymetry, 2- Way Traveltime: 000125
Bathymetry, Corrected Depth: 9.0
Magnetics Total Field, 1st Sensor: 357340
Magnetics Residual Field: -15500
Observed Gravity: 9780000
Free-Air Anomaly: -1315
Min/Max Data Record:
Date: 1977 03 26
Latitude: +29.34700
Longitude: +60.58450
Bathymetry, 2- Way Traveltime: 044825
Bathymetry, Corrected Depth: 3370.0
Magnetics Total Field, 1st Sensor: 444980
Magnetics Residual Field: +03430
Observed Gravity: 9792212
Free-Air Anomaly: +0897