Survey Identifier: A2067L05
Format Acronym: MGD77
Data Center File Number: 02020044
Parameters Surveyed Code: 55511
File Creation Date (yyyymmdd): 19811207
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. JOHN MILLIMAN
Project: CRUISE 67, LEG 5
Funding: NSF
Survey Departure Date (yyyymmdd): 19720412
Port of Departure: WALVIS BAY, SOUTHWEST AFRICA
Survey Arrival Date (yyyymmdd): 19720506
Port of Arrival: WALVIS BAY, SOUTHWEST AFRICA
Bathymetry Instrumentation: PGR 3.5KHZ WIDE BEAM
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: VARIAN PROTON MAGNETOMETER
Additional Forms of Magnetics Data: ANALOG RECORDS, PUNCHED TAPE
Gravity Instrumentation: ARPA VIBRATING STRING ACCELEROMETER
Additional Forms of Gravity Data: ANALOG RECORDS, PUNCHED TAPE
Seismic Instrumentation: 300,40 CU.IN. AIR GUN, SINGLE CHANNEL
Formats of Seismic Data: ANALOG RECORDS, X-Y SHEETS
Topmost Latitude of Survey: -22
Bottommost Latitude: -40
Leftmost Longitude: -019
Rightmost Longitude: +015
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: 050
General Sampling Rate of Magnetics: 60
Magnetic Sensor Tow Distance: 250
Reference Field Code: 03
Reference Field: IGRF 1965
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 1967
Reference System Code: 2
Reference System: POTSDAM 1930
Corrections Applied: DRIFT=-.79MGAL/DAY BIAS=+.2
Departure Base Station Gravity: 9788378
Departure Base Station Description: WHOI STATION 833
Arrival Base Station Gravity: 9788360
Arrival Base Station Description: WHOI STATION 835
Number of Data Records: 13908
Min/Max Data Record:
Date: 1972 04 12
Latitude: -39.21689
Longitude: -18.31920
Bathymetry, 2- Way Traveltime: 000275
Bathymetry, Corrected Depth: 21.0
Magnetics Total Field, 1st Sensor: 262450
Magnetics Residual Field: -07030
Observed Gravity: 9788677
Free-Air Anomaly: -0577
Min/Max Data Record:
Date: 1972 05 06
Latitude: -22.86200
Longitude: +14.50060
Bathymetry, 2- Way Traveltime: 073050
Bathymetry, Corrected Depth: 5513.0
Magnetics Total Field, 1st Sensor: 313510
Magnetics Residual Field: +07620
Observed Gravity: 9801378
Free-Air Anomaly: +0954