Survey Identifier: 77031705
Format Acronym: MGD77
Data Center File Number: 08010069
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19830201
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): L. KROENKE
Project: EMPEROR SEAMOUNTS KK77-03-17-05
Funding: ONR
Survey Departure Date (yyyymmdd): 19770607
Port of Departure: YOKOHAMA, JAPAN
Survey Arrival Date (yyyymmdd): 19770709
Port of Arrival: MIDWAY, U.S.A.
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: PRIM-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, MICROFILM
Gravity Instrumentation: LACOSTE ROMBERG S-33
Additional Forms of Gravity Data: ANALOG, MICROFILM
Seismic Instrumentation: (SEE ADD.DOC. 18)
Formats of Seismic Data: ANALOG, MICROFILM
Topmost Latitude of Survey: +50
Bottommost Latitude: +27
Leftmost Longitude: +139
Rightmost Longitude: -177
General Digitizing Rate of Bathymetry: 33
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: NONE.(PICKED PEAKS/TROUGHS OR 15-MIN INTERVLS IF SMOOTH)
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 06
Horizontal Sensor Separation: 000
Reference Field Code: 04
Reference Field: IGRF-75
Method of Applying Residual Field: FOR EACH DATA VALUE
General Digitizing Rate of Gravity: 050
General Sampling Rate of Gravity: 60
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNATIONAL1930
Reference System Code: 2
Reference System: POTSDAM
Corrections Applied: NONE APPLIED
Departure Base Station Gravity: 9795073
Departure Base Station Description: MIDWAY, U.S.A.
Arrival Base Station Gravity: 9785073
Arrival Base Station Description: MIDWAY, U.S.A.
Additional Documentation: 09 120 AND 300 CU IN AIRGUN, 4500J SPKR, OBS, B, M, G, REFLX (LOW 40-80, 09 MIX 40-80/120-240, VLOW 15-30), REFRX/DIGITAL, OBS 25-33, ASPER 30-48, 09 XBT 3-4, PCOD, RD. 15 GRAVITY BASE STATIONS IN GEORGE P. WOOLLARD AND JOHN C. ROSE, 15 INTERNATIONAL GRAVITY MEASUREMENTS, MADISON, UNIV OF WISCONSIN, 1963, 15 GRAVITY STILL METER 7739.6
Number of Data Records: 43896
Min/Max Data Record:
Date: 1977 06 07
Latitude: +26.99944
Longitude: -179.99955
Bathymetry, 2- Way Traveltime: 000090
Bathymetry, Corrected Depth: 7.0
Magnetics Total Field, 1st Sensor: 360830
Magnetics Residual Field: -11570
Free-Air Anomaly: -8642
Min/Max Data Record:
Date: 1977 07 09
Latitude: +49.12842
Longitude: +179.99968
Bathymetry, 2- Way Traveltime: 119610
Bathymetry, Corrected Depth: 9209.0
Magnetics Total Field, 1st Sensor: 480290
Magnetics Residual Field: +10280
Free-Air Anomaly: +2557