Survey Identifier: 78123008


Format Acronym: MGD77
Data Center File Number: 08010047
Parameters Surveyed Code: 55551
File Creation Date (yyyymmdd): 19801229
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): PAUL JUBINSKI
Project: TRANSIT FROM GALAPAGOS RIFT + DOWNHOLE II EXPER KK78123008
Funding: N.S.F./UNIV OF WASH
Survey Departure Date (yyyymmdd): 19790630
Port of Departure: ACAPULCO, MEXICO
Survey Arrival Date (yyyymmdd): 19790713
Port of Arrival: HONOLULU, HAWAII, U.S.A.
Navigation Instrumentation: SATELLITE, OMEGA, SEXTANT
Geodetic Datum/Position: SATELLITE
Bathymetry Instrumentation: 3.5KHZ, 30DEG BEAM, 1SEC REP RATE
Additional Forms of Bathymetric Data: ANALOG RECORDS, MICROFILM
Magnetics Instrumentation: GEOMETRICS G801 PROTON PRECESSION MAG
Additional Forms of Magnetics Data: ANALOG RECORDS, MICROFILM, DATA LOGGER
Gravity Instrumentation: LACOSTE-ROMBERG S-42 (OREGON STATE UNIV)
Additional Forms of Gravity Data: ANALOG RECORDS, MICROFILM, DATA LOGGER
Seismic Instrumentation: (SEE BATHYMETRY INSTRUMENTATION)
Formats of Seismic Data: (SEE BATHYMETRY DATA)
Topmost Latitude of Survey: +22
Bottommost Latitude: +16
Leftmost Longitude: -158
Rightmost Longitude: -099
General Digitizing Rate of Bathymetry: 16
General Sampling Rate of Bathymetry: 1 PER SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: NO INTERPOLATION
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 05
Magnetic Sensor Tow Distance: 0180
Horizontal Sensor Separation: 000
Reference Field Code: 04
Reference Field: IGRF 1975
Method of Applying Residual Field: CALCULATED AT EACH POINT
General Digitizing Rate of Gravity: 050
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAGSYSTEM1967
Reference System Code: 3
Reference System: IGSN71
Corrections Applied: NO DRIFT
Additional Documentation: 15 14.7MGAL SUBTRACTED FROM VALUES IN GEORGE P. WOOLLARD AND JOHN C. ROSE, 15 INTERNATIONAL GRAVITY MEASUREMENTS, MADISON, UNIV OF WISCONSIN, 1963, 15 DEPARTURE STILL METER READING 6297.5/TIE VALUE 978510.3, 12 DIGITIZED WITH SHIP DIGITIZER AT HIG/5 MIN INTERVALS+PEAKS+TROUGHS
Number of Data Records: 28108

Min/Max Data Record:
Date: 1979 06 30
Latitude: +16.80627
Longitude: -157.90068
Bathymetry, 2- Way Traveltime: 000390
Bathymetry, Corrected Depth: 29.0
Magnetics Total Field, 1st Sensor: 347270
Magnetics Residual Field: -13200
Free-Air Anomaly: -1139

Min/Max Data Record:
Date: 1979 07 13
Latitude: +21.32181
Longitude: -99.94126
Bathymetry, 2- Way Traveltime: 081440
Bathymetry, Corrected Depth: 6165.0
Magnetics Total Field, 1st Sensor: 419920
Magnetics Residual Field: +09270
Free-Air Anomaly: +2533