Survey Identifier: A2096L03


Format Acronym: MGD77
Data Center File Number: 02020089
Parameters Surveyed Code: 55513
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.MICHAEL PURDY
Project: CRUISE 96,LEG 3
Funding: NSF,ONR
Survey Departure Date (yyyymmdd): 19771101
Port of Departure: ST.GEORGES, BERMUDA
Survey Arrival Date (yyyymmdd): 19771202
Port of Arrival: ST.GEORGES BERMUDA
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
Seismic Instrumentation: 40 + 80 CU.IN. AIRGUNS,SINGLE CHANNELS
Formats of Seismic Data: X-Y RECORDERS
Topmost Latitude of Survey: +33
Bottommost Latitude: +22
Leftmost Longitude: -065
Rightmost Longitude: -040
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=-.19MGAL/DAY BIAS=-9.0
Departure Base Station Gravity: 9798090
Departure Base Station Description: WHOI BASE STATION 920
Arrival Base Station Gravity: 9798091
Arrival Base Station Description: WHOI BASE STATION 920
Number of Data Records: 15219

Min/Max Data Record:
Date: 1977 11 01
Latitude: +22.80130
Longitude: -64.70430
Bathymetry, 2- Way Traveltime: 005000
Bathymetry, Corrected Depth: 382.0
Magnetics Total Field, 1st Sensor: 390590
Magnetics Residual Field: -09550
Observed Gravity: 9787777
Free-Air Anomaly: -0826

Min/Max Data Record:
Date: 1977 12 02
Latitude: +32.39874
Longitude: -40.17100
Bathymetry, 2- Way Traveltime: 080800
Bathymetry, Corrected Depth: 6144.0
Magnetics Total Field, 1st Sensor: 499670
Magnetics Residual Field: -01230
Observed Gravity: 9798411
Free-Air Anomaly: +3253