Survey Identifier: TG-79-1
Format Acronym: MGD77
Data Center File Number: 08050008
Parameters Surveyed Code: 51113
File Creation Date (yyyymmdd): 19820402
Source Institution: HAWAII INST. GEOPHYSICS FOR CCOPSOPAC
Country: U.S.A.
Platform Name: R/V MACHIAS
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): GARRY A. GAUSS
Project: CCOP/SOPAC-UN/RAS/79/074,TG-79-1
Funding: UNDP
Survey Departure Date (yyyymmdd): 19791030
Port of Departure: SUVA,FIJI
Survey Arrival Date (yyyymmdd): 19791121
Port of Arrival: APIA,WESTERN SAMOA
Navigation Instrumentation: SATNAV MAGNAVOX 1102/RADAR/SEXTANT
Geodetic Datum/Position: 1-SATNAV/2-NEAR LAND,RADAR/3-SEXTANT
Bathymetry Instrumentation: (SEE ADD.DOC. 18)
Additional Forms of Bathymetric Data: ANALOG RECORDS,MICROFILM
Seismic Instrumentation: BOLT 40 INCH3,EPC4100,1-CHANNEL
Formats of Seismic Data: ANALOG RECORDS,MICROFILM
Topmost Latitude of Survey: -13
Bottommost Latitude: -25
Leftmost Longitude: -179
Rightmost Longitude: -171
General Digitizing Rate of Bathymetry: 112
General Sampling Rate of Bathymetry: 01 SEC/SWEEP
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: NONE.(PICKED PEAKS/TROUGHS AND 15MIN INTERVLS IF SMOOTH)
Additional Documentation: 06 RAYTHEON PTR 106C,07KHZ,01SEC/SWEEP. BATHYMETRY ACCOMPANYING SEISMIC, 06 REFLECTION PROFILING ON SOUTHERN HALF OF TONGA ISLAND ARC AND ON, 06 TRANSITS.
Number of Data Records: 3266
Min/Max Data Record:
Date: 1979 10 30
Latitude: -24.12967
Longitude: -178.08433
Bathymetry, 2- Way Traveltime: 000230
Bathymetry, Corrected Depth: 17.0
Min/Max Data Record:
Date: 1979 11 21
Latitude: -13.66583
Longitude: -171.75050
Bathymetry, 2- Way Traveltime: 077460
Bathymetry, Corrected Depth: 5856.0