Survey Identifier: MW8710
Format Acronym: MGD77
Data Center File Number: 08020042
Parameters Surveyed Code: 55531
File Creation Date (yyyymmdd): 19901105
Source Institution: HAWAII INSTITUTE OF GEOPHYSICS/UCSB
Country: U.S.A.
Platform Name: R/V MOANA WAVE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): KEN MACDONALD
Project: MW8710. SEAMARC II STUDIES OF THE EAST PACIFIC RISE.
Funding: NSF
Survey Departure Date (yyyymmdd): 19870906
Port of Departure: GUAYAQUIL, ECUADOR
Survey Arrival Date (yyyymmdd): 19871014
Port of Arrival: HANGA ROA, EASTER ISLAND,CHILE
Navigation Instrumentation: GPS,SATNAV,RADAR,SEXTANT
Geodetic Datum/Position: PRIM=GPS, SEC=SATNAV
Bathymetry Instrumentation: 3.5 KHZ 30 DEGREE BEAM, 1 SEC SWEEP
Additional Forms of Bathymetric Data: ANALOG, DIGITAL, MICROFILM
Magnetics Instrumentation: GEOMETRICS G 801-3
Additional Forms of Magnetics Data: ANALOG, DIGITAL
Gravity Instrumentation: LACOSTE ROMBERG S-33
Additional Forms of Gravity Data: ANALOG, DIGITAL
Seismic Instrumentation: 40 CU-IN AIRGUN, 40-200 HZ.
Formats of Seismic Data: ANALOG, MICROFILM
Topmost Latitude of Survey: +03
Bottommost Latitude: -24
Leftmost Longitude: -115
Rightmost Longitude: -080
General Digitizing Rate of Bathymetry: 012
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: 20
Magnetic Sensor Tow Distance: 0000
Sensor Depth: 00000
Horizontal Sensor Separation: 000
Reference Field Code: 88
Reference Field: IGRF-1985
Method of Applying Residual Field: FOR EACH DATA VALUE
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 30
Theoretical Gravity Formula Code: 8
Theoretical Gravity Formula: IAG SYSTEM 1974
Reference System Code: 3
Reference System: IGSN 71
Corrections Applied: NONE APPLIED
Departure Base Station Gravity: 9789237
Departure Base Station Description: HONOLULU PIER 45
Arrival Base Station Gravity: 9799755
Arrival Base Station Description: MELBOURNE, AUSTRALIA
Additional Documentation: DATA TAKEN ON BOARD: BMG. SEAMARC II. PROCESSED SIDESCAN 1-30. PROCESSED, SIDESCAN+3.5KHZ 1-16. RAW SIDESCAN 1-5. SEISMIC 40-200HZ 1 ONLY. ADCP, DSK027-059. -114.72,-80.41,-23.87,2.11.
Number of Data Records: 94535
Min/Max Data Record:
Date: 1987 09 06
Latitude: -23.87190
Longitude: -114.72118
Bathymetry, 2- Way Traveltime: 000260
Bathymetry, Corrected Depth: 20.0
Magnetics Total Field, 1st Sensor: 294530
Magnetics Residual Field: -12680
Observed Gravity: 9779355
Free-Air Anomaly: -1021
Min/Max Data Record:
Date: 1987 10 13
Latitude: +2.10997
Longitude: -80.41142
Bathymetry, 2- Way Traveltime: 059540
Bathymetry, Corrected Depth: 4470.0
Magnetics Total Field, 1st Sensor: 332840
Magnetics Residual Field: +10022
Observed Gravity: 9788869
Free-Air Anomaly: +0724