Survey Identifier: C1406
Format Acronym: MGD77
Data Center File Number: 01010095
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19890706
Source Institution: LAMONT-DOHERTY GEOLOGICAL OBSERVATORY
Country: USA
Platform Name: ROBERT D. CONRAD
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): P. RABINOWITZ
Project: CRUISE 14, LEG 6
Survey Departure Date (yyyymmdd): 19710718
Port of Departure: ADAK, ALASKA
Survey Arrival Date (yyyymmdd): 19710817
Port of Arrival: ADAK, ALASKA
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE/ DEAD RECKONING
Bathymetry Instrumentation: (SEE ADD DOC / 18)
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: L-DGO MFG PROTON-PRECESSION
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: ANSCHUTZ ELECTRICTABLE, ASKANIA GSS2-31
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: L-DGO 25CU-IN-AIRGUN,EEL,DRUM RECORDER
Formats of Seismic Data: TWO, 2 CHANNEL SHEET RECORDS
Topmost Latitude of Survey: +62
Bottommost Latitude: +52
Leftmost Longitude: +162
Rightmost Longitude: -166
General Digitizing Rate of Bathymetry: 060
General Sampling Rate of Bathymetry: ONE SECOND
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: NONE
General Digitizing Rate of Magnetics: 45
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN TWO NAV PTS
General Digitizing Rate of Gravity: 45
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT'L 1930
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Additional Documentation: 06 -3.5 AND 12 KHZ, WIDE BEAM (60 DEG), 1 SECOND SWEEP
Number of Data Records: 9375
Min/Max Data Record:
Date: 1971 07 18
Latitude: +52.05500
Longitude: -179.99690
Bathymetry, 2- Way Traveltime: 000950
Bathymetry, Corrected Depth: 71.0
Magnetics Total Field, 1st Sensor: 481600
Magnetics Residual Field: -07270
Free-Air Anomaly: -2396
Min/Max Data Record:
Date: 1971 08 17
Latitude: +61.42020
Longitude: +179.98870
Bathymetry, 2- Way Traveltime: 079750
Bathymetry, Corrected Depth: 6010.0
Magnetics Total Field, 1st Sensor: 537120
Magnetics Residual Field: +17530
Free-Air Anomaly: +2122