Survey Identifier: MW9603
Format Acronym: MGD77
Data Center File Number: 08020090
Parameters Surveyed Code: 55513
File Creation Date (yyyymmdd): 19960312
Source Institution: SOEST/UNIVERSITY OF HAWAII
Country: U.S.A.
Platform Name: R/V MOANA WAVE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): BRIAN TAYLOR
Project: MW9603. RIFTING AND SPREADING IN THE LAU BASIN.
Funding: NSF
Survey Departure Date (yyyymmdd): 19960209
Port of Departure: SUVA,FIJI
Survey Arrival Date (yyyymmdd): 19960311
Port of Arrival: PAGO PAGO, AMERICAN SAMOA
Navigation Instrumentation: GPS
Geodetic Datum/Position: PRIM=GPS
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: DIGITAL
Gravity Instrumentation: LACOSTE ROMBERG S-33
Additional Forms of Gravity Data: DIGITAL
Seismic Instrumentation: 120 CU-IN AIRGUN, 6 CHANNEL STREAMER
Formats of Seismic Data: ANALOG, DIGITAL
Topmost Latitude of Survey: -14
Bottommost Latitude: -19
Leftmost Longitude: 178
Rightmost Longitude: -170
General Digitizing Rate of Bathymetry: 013
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: NONE(PICKED PEAKS/TROUGHS OR 10 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-1990
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 NEEDED
Departure Base Station Gravity: 9786092
Departure Base Station Description: SUVA,FIJI; KINGS WHARF
Arrival Base Station Gravity: 9786418
Arrival Base Station Description: PAGO PAGO,AM SAMOA; FUEL PIER
Additional Documentation: DATA TAKEN ON BOARD: B,M,G,HMRG SIDESCAN SONAR,WIND,ADCP,DIGITAL SEISMICS, NGDC SUBSAMPLED DATA RECORDS WITH ONLY SHOT POINT NAVIGATION, SELECTING, 47,373 FROM 260,460 RECORDS, INCLUDING RECORDS NO CLOSER THAN 0.125 NAUTICAL, MILES, APPROXIMATELY 1 RECORD/MINUTE IN TIME. COMPLETE SHOT POINT NAVIGATION, FILE IS AVAILABLE FROM NGDC.
Number of Data Records: 115051
Min/Max Data Record:
Date: 1996 02 09
Latitude: -18.81393
Longitude: -179.99844
Bathymetry, 2- Way Traveltime: 000360
Bathymetry, Corrected Depth: 27.0
Magnetics Total Field, 1st Sensor: 404790
Magnetics Residual Field: -10242
Observed Gravity: 9781672
Free-Air Anomaly: -2228
Seismic Line Number: 10
Seismic Shot-Point Number: 000001
Min/Max Data Record:
Date: 1996 03 11
Latitude: -14.27394
Longitude: +179.99992
Bathymetry, 2- Way Traveltime: 102770
Bathymetry, Corrected Depth: 7849.0
Magnetics Total Field, 1st Sensor: 428300
Magnetics Residual Field: +06300
Observed Gravity: 9786781
Free-Air Anomaly: +3080
Seismic Line Number: 2902
Seismic Shot-Point Number: 013757