Survey Identifier: WS771
Format Acronym: MGD77
Data Center File Number: 08080002
Parameters Surveyed Code: 51111
File Creation Date (yyyymmdd): 19820908
Source Institution: HAWAII INST. GEOPHYSICS FOR CCOPSOPAC
Country: U.S.A.
Platform Name: R/V ACHERON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): A. JOHN HALUNEN
Project: CCOP/SOPAC-UN/RAS/72/122 PROJECT, CRUISE WS-77-1.
Funding: UNDP
Survey Departure Date (yyyymmdd): 19770725
Port of Departure: APIA,WESTERN SAMOA
Survey Arrival Date (yyyymmdd): 19770812
Port of Arrival: APIA,WESTERN SAMOA
Navigation Instrumentation: RADAR(48-MILE RANGE),SEXTANT
Geodetic Datum/Position: 1-RADAR/2-SEXTANT
Bathymetry Instrumentation: (SEE ADD.DOC. 18)
Additional Forms of Bathymetric Data: ANALOG RECORDS, MICROFILM
Topmost Latitude of Survey: -12
Bottommost Latitude: -15
Leftmost Longitude: -173
Rightmost Longitude: -170
General Digitizing Rate of Bathymetry: 176
General Sampling Rate of Bathymetry: 01SEC/SWEEP
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: NONE.(PICKED PEAKS/TROUGHS,15-MIN.INTERVALS IF SMOOTH.)
Additional Documentation: 06 7KHZ,36-DEGREE BEAM-WIDTH,01SEC/SWEEP. DEEP-SEA BATHYMETRY, 06 ESSENTIALLY NORTH OF WESTERN SAMOA, ACCOMPANYING A SAMPLING, 06 PROGRAMME IN SEARCH OF MANGANESE DEPOSITS, PHOSPHORITES AND, 06 PRECIOUS CORALS.
Number of Data Records: 1944
Min/Max Data Record:
Date: 1977 07 25
Latitude: -15.00000
Longitude: -172.46667
Bathymetry, 2- Way Traveltime: 000210
Bathymetry, Corrected Depth: 16.0
Min/Max Data Record:
Date: 1977 08 12
Latitude: -12.41000
Longitude: -170.75000
Bathymetry, 2- Way Traveltime: 065830
Bathymetry, Corrected Depth: 4957.0