Survey Identifier: A2067L06
Format Acronym: MGD77
Data Center File Number: 02020045
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. K. O. EMERY
Project: CRUISE 67, LEG 6
Funding: NSF
Survey Departure Date (yyyymmdd): 19720510
Port of Departure: WALVIS BAY, SOUTHWEST AFRICA
Survey Arrival Date (yyyymmdd): 19720529
Port of Arrival: LUANDA, ANGOLA
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: -06
Bottommost Latitude: -23
Leftmost Longitude: +005
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=-.149MGAL/DAY BIAS=-7.6
Departure Base Station Gravity: 9488370
Departure Base Station Description: WHOI STATION 835
Arrival Base Station Gravity: 9782089
Arrival Base Station Description: WHOI STATION 836
Number of Data Records: 5900
Min/Max Data Record:
Date: 1972 05 10
Latitude: -22.84433
Longitude: +5.77280
Bathymetry, 2- Way Traveltime: 000225
Bathymetry, Corrected Depth: 17.0
Magnetics Total Field, 1st Sensor: 300840
Magnetics Residual Field: -08030
Observed Gravity: 9781186
Free-Air Anomaly: -0379
Min/Max Data Record:
Date: 1972 05 29
Latitude: -6.94224
Longitude: +14.44040
Bathymetry, 2- Way Traveltime: 071300
Bathymetry, Corrected Depth: 5385.0
Magnetics Total Field, 1st Sensor: 336920
Magnetics Residual Field: +14600
Observed Gravity: 9788394
Free-Air Anomaly: +0861