Survey Identifier: C1109
Format Acronym: MGD77
Data Center File Number: 01010052
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): W. PITMAN
Project: CRUISE 11, LEG 9
Survey Departure Date (yyyymmdd): 19670714
Port of Departure: ADAK, ALASKA
Survey Arrival Date (yyyymmdd): 19670813
Port of Arrival: VICTORIA, BRITISH COLUMBIA
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 GSS2-6
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: +58
Bottommost Latitude: +41
Leftmost Longitude: -178
Rightmost Longitude: -125
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: 150
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF-65
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN TWO NAV PTS
General Digitizing Rate of Gravity: 100
General Sampling Rate of Gravity: 00
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: 8606
Min/Max Data Record:
Date: 1967 07 14
Latitude: +41.12630
Longitude: -177.19240
Bathymetry, 2- Way Traveltime: 000800
Bathymetry, Corrected Depth: 60.0
Magnetics Total Field, 1st Sensor: 425920
Magnetics Residual Field: -07740
Free-Air Anomaly: -1864
Min/Max Data Record:
Date: 1967 08 13
Latitude: +57.04180
Longitude: -125.63570
Bathymetry, 2- Way Traveltime: 096400
Bathymetry, Corrected Depth: 7322.0
Magnetics Total Field, 1st Sensor: 568980
Magnetics Residual Field: +10690
Free-Air Anomaly: +2113