Survey Identifier: 84042802
Format Acronym: MGD77
Data Center File Number: 08010115
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19860313
Source Institution: HAWAII INSTITUTE OF GEOPHYSICS
Country: U.S.A.
Platform Name: R/V KANA KEOKI
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): BRIAN TAYLOR
Project: KK84042802 BONIN ARC SEAMARC II SURVEY
Funding: NSF
Survey Departure Date (yyyymmdd): 19840530
Port of Departure: CHICHIJIMA, JAPAN
Survey Arrival Date (yyyymmdd): 19840617
Port of Arrival: YOKOHAMA, JAPAN
Navigation Instrumentation: LORAN C,SATELLITE,OMEGA
Geodetic Datum/Position: PRIM-LORAN C, SEC-SATELLITE
Bathymetry Instrumentation: 3.5 KHZ, 30 DEG BEAM
Additional Forms of Bathymetric Data: ANALOG, MICROFILM
Magnetics Instrumentation: GEOMETRICS G 801-3
Additional Forms of Magnetics Data: ANALOG
Gravity Instrumentation: LACOSTE ROMBERG S-33
Additional Forms of Gravity Data: ANALOG
Seismic Instrumentation: 40 CU IN AIRGUN
Formats of Seismic Data: ANALOG, MICROFILM
Topmost Latitude of Survey: +36
Bottommost Latitude: +27
Leftmost Longitude: +139
Rightmost Longitude: +143
General Digitizing Rate of Bathymetry: 15
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 15000
Interpolation Scheme: PICKED PEAKS AND TROUGHS OR 15 MIN INTERVALS (IF SMOOTH)
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 10
Reference Field Code: 04
Reference Field: IGRF-75
Method of Applying Residual Field: FOR EACH DATA VALUE
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 60
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAGSYSTEM1967
Reference System Code: 3
Reference System: IGSN71
Corrections Applied: NONE
Departure Base Station Gravity: 9789243
Departure Base Station Description: HONOLULU, PIER 45
Arrival Base Station Gravity: 9789243
Arrival Base Station Description: HONOLULU, PIER 45
Additional Documentation: 15 GRAVITY BASE STATIONS IN GEORGE P. WOOLLARD AND JOHN C. ROSE, 15 INTERNATIONAL GRAVITY MEASUREMENTS, MADISON, UNIV OF WISCONSIN, 1963
Number of Data Records: 37781
Min/Max Data Record:
Date: 1984 05 30
Latitude: +27.09517
Longitude: +139.40304
Bathymetry, 2- Way Traveltime: 000580
Bathymetry, Corrected Depth: 43.0
Magnetics Total Field, 1st Sensor: 409910
Magnetics Residual Field: -04200
Free-Air Anomaly: -3003
Min/Max Data Record:
Date: 1984 06 17
Latitude: +35.93685
Longitude: +142.91734
Bathymetry, 2- Way Traveltime: 123520
Bathymetry, Corrected Depth: 9526.0
Magnetics Total Field, 1st Sensor: 442540
Magnetics Residual Field: +11070
Free-Air Anomaly: +3151