Survey Identifier: A2092L02
Format Acronym: MGD77
Data Center File Number: 02020059
Parameters Surveyed Code: 55511
File Creation Date (yyyymmdd): 1982 525
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.GRAHAM PURDY
Project: CRUISE 92, LEG 2
Funding: NSF
Survey Departure Date (yyyymmdd): 19750915
Port of Departure: S. GEORGES BERMUDA
Survey Arrival Date (yyyymmdd): 19751013
Port of Arrival: WOODS HOLE, U.S.A.
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: +43
Bottommost Latitude: +22
Leftmost Longitude: -070
Rightmost Longitude: -043
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=+.60MGAL/DAY BIAS=+135.2
Number of Data Records: 16287
Min/Max Data Record:
Date: 1975 09 15
Latitude: +22.39880
Longitude: -69.51630
Bathymetry, 2- Way Traveltime: 000750
Bathymetry, Corrected Depth: 56.0
Magnetics Total Field, 1st Sensor: 391580
Magnetics Residual Field: -11380
Observed Gravity: 9787712
Free-Air Anomaly: -0553
Min/Max Data Record:
Date: 1975 10 13
Latitude: +42.36563
Longitude: -43.04140
Bathymetry, 2- Way Traveltime: 083450
Bathymetry, Corrected Depth: 6352.0
Magnetics Total Field, 1st Sensor: 554900
Magnetics Residual Field: +12800
Observed Gravity: 9804035
Free-Air Anomaly: +1775