Survey Identifier: A2092L01
Format Acronym: MGD77
Data Center File Number: 02020058
Parameters Surveyed Code: 55511
File Creation Date (yyyymmdd): 1982 717
Source Institution: WOODS HOLE OCEANOGRAPHIC INSTITUTION
Country: U.S.A.
Platform Name: ATANTIS II
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DR.GRAHAM PURDY
Project: CRUISE 92, LEG 1
Funding: NSF
Survey Departure Date (yyyymmdd): 19750825
Port of Departure: WOODS HOLE,U.S.A.
Survey Arrival Date (yyyymmdd): 19750912
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
Topmost Latitude of Survey: +40
Bottommost Latitude: +29
Leftmost Longitude: -074
Rightmost Longitude: -065
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: BIAS=+135.6MGAL
Departure Base Station Gravity: 9803125
Departure Base Station Description: 602-WHOI REF.REPORT 74-11
Arrival Base Station Gravity: 9798094
Arrival Base Station Description: 885-WHOI REF.REPORT 74-11
Number of Data Records: 9900
Min/Max Data Record:
Date: 1975 08 25
Latitude: +29.54451
Longitude: -73.19090
Bathymetry, 2- Way Traveltime: 000700
Bathymetry, Corrected Depth: 53.0
Magnetics Total Field, 1st Sensor: 488880
Magnetics Residual Field: -07900
Observed Gravity: 9792619
Free-Air Anomaly: -0752
Min/Max Data Record:
Date: 1975 09 12
Latitude: +39.39772
Longitude: -65.12150
Bathymetry, 2- Way Traveltime: 071475
Bathymetry, Corrected Depth: 5422.0
Magnetics Total Field, 1st Sensor: 553260
Magnetics Residual Field: -01890
Observed Gravity: 9801075
Free-Air Anomaly: +0446