Survey Identifier: A2075L02
Format Acronym: MGD77
Data Center File Number: 02020052
Parameters Surveyed Code: 55531
File Creation Date (yyyymmdd): 19800201
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 75, LEG 2
Funding: NSF
Survey Departure Date (yyyymmdd): 19730210
Port of Departure: DAKAR, SENEGAL
Survey Arrival Date (yyyymmdd): 19730306
Port of Arrival: TEMA, GHANA
Navigation Instrumentation: SATELLITE, DR
Geodetic Datum/Position: SAT. MERGED WITH SHIP VELOCITY
Bathymetry Instrumentation: PGR 3.5KHZ WIDE BEAM ONE SEC. SWEEP
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: SINGLE CHANNEL PRIM.-300CU.IN. GUN
Formats of Seismic Data: X-Y-Z SHEETS, MAG. TAPE
Topmost Latitude of Survey: +15
Bottommost Latitude: -06
Leftmost Longitude: -023
Rightmost Longitude: +010
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=+.508MGAL/DAY BIAS=20.1
Departure Base Station Gravity: 9784817
Departure Base Station Description: WHOI BASE STATION 843
Arrival Base Station Gravity: 9781425
Arrival Base Station Description: WHOI BASE STATION 844
Number of Data Records: 6237
Min/Max Data Record:
Date: 1973 02 10
Latitude: -5.18300
Longitude: -22.48900
Bathymetry, 2- Way Traveltime: 000350
Bathymetry, Corrected Depth: 26.0
Magnetics Total Field, 1st Sensor: 289510
Magnetics Residual Field: -05030
Free-Air Anomaly: -0685
Min/Max Data Record:
Date: 1973 03 06
Latitude: +14.52820
Longitude: +9.34500
Bathymetry, 2- Way Traveltime: 071800
Bathymetry, Corrected Depth: 5424.0
Magnetics Total Field, 1st Sensor: 325610
Magnetics Residual Field: +04420
Free-Air Anomaly: +0912