Survey Identifier: 74010903
Format Acronym: MGD77
Data Center File Number: 08010027
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19830211
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): J. F. CAMPBELL
Project: NAZCA PLATE PROJECT KK74-01-09-03
Funding: IDOE
Survey Departure Date (yyyymmdd): 19740411
Port of Departure: CALLAO, CHILE
Survey Arrival Date (yyyymmdd): 19740508
Port of Arrival: EASTER ISLAND, CHILE
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: VARIAN PROTON PRECESSION MAGNETOMETER
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: -12
Bottommost Latitude: -28
Leftmost Longitude: -119
Rightmost Longitude: -077
General Digitizing Rate of Bathymetry: 43
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: 69
Horizontal Sensor Separation: 000
Reference Field Code: 03
Reference Field: IGRF-65
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
Additional Documentation: 09 AIRGUN, OBS, B, M, G, REFLX (HIGH, LOW, MIX, VLOW), ASPER 22-31, 09 XBT 59-91, FFTG, PCOD, FFG, FFC, RD. 15 GRAVITY BASE STATIONS IN GEORGE P. WOOLLARD AND JOHN C. ROSE, 15 INTERNATIONAL GRAVITY MEASUREMENTS, MADISON, UNIV OF WISCONSIN, 1963, 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: 16902
Min/Max Data Record:
Date: 1974 04 11
Latitude: -27.46480
Longitude: -118.03210
Bathymetry, 2- Way Traveltime: 000450
Bathymetry, Corrected Depth: 34.0
Magnetics Total Field, 1st Sensor: 274000
Magnetics Residual Field: -14650
Free-Air Anomaly: -1260
Min/Max Data Record:
Date: 1974 05 08
Latitude: -12.05500
Longitude: -77.15150
Bathymetry, 2- Way Traveltime: 079330
Bathymetry, Corrected Depth: 6001.0
Magnetics Total Field, 1st Sensor: 359010
Magnetics Residual Field: +05040
Free-Air Anomaly: +0840