Survey Identifier: 71042607
Format Acronym: MGD77
Data Center File Number: 08010006
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19901026
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): ROCKNE JOHNSON
Project: NAZCA PLATE PROJECT KK71-04-26-07.
Funding: IDOE
Survey Departure Date (yyyymmdd): 19711219
Port of Departure: PAPEETE, TAHITI
Survey Arrival Date (yyyymmdd): 19720115
Port of Arrival: CALLAO, PERU
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: PRIM=SATELLITE
Bathymetry Instrumentation: 3.5 KHZ 30 DEGREE BEAM, 1 SEC SWEEP
Additional Forms of Bathymetric Data: ANALOG, DIGITAL, MICROFILM
Magnetics Instrumentation: VARIAN PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOG, DIGITAL, MICROFILM
Gravity Instrumentation: LACOSTE ROMBERG S-33
Additional Forms of Gravity Data: ANALOG, DIGITAL, MICROFILM
Seismic Instrumentation: AIRGUN, SPARKER
Formats of Seismic Data: ANALOG, MICROFILM
Topmost Latitude of Survey: -11
Bottommost Latitude: -19
Leftmost Longitude: -150
Rightmost Longitude: -077
General Digitizing Rate of Bathymetry: 051
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: NONE(PICKED PEAKS/TROUGHS OR 15 MIN INTERVALS IF SMOOTH)
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 06
Horizontal Sensor Separation: 000
Reference Field Code: 03
Reference Field: IGRF-1965
Method of Applying Residual Field: FOR EACH DATA VALUE
General Digitizing Rate of Gravity: 050
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNATIONAL1930
Reference System Code: 2
Reference System: POTSDAM
Corrections Applied: NONE APPLIED
Departure Base Station Description: HONOLULU PIER 18
Arrival Base Station Description: HONOLULU PIER 18
Additional Documentation: DATA TAKEN ON BOARD: B,M,G, REFLX (HIGH, LOW), SONOBUOY 83-115, PC, FFC, FFTG, -149.57,-77.15,-18.32,-11.02.
Number of Data Records: 12714
Min/Max Data Record:
Date: 1971 12 19
Latitude: -18.32126
Longitude: -149.56850
Bathymetry, 2- Way Traveltime: 001430
Bathymetry, Corrected Depth: 107.0
Magnetics Total Field, 1st Sensor: 278460
Magnetics Residual Field: -05050
Free-Air Anomaly: -0640
Min/Max Data Record:
Date: 1972 01 15
Latitude: -11.01755
Longitude: -77.14525
Bathymetry, 2- Way Traveltime: 082630
Bathymetry, Corrected Depth: 6259.0
Magnetics Total Field, 1st Sensor: 374720
Magnetics Residual Field: +04680
Free-Air Anomaly: +1520