Survey Identifier: TUNE04WT
Format Acronym: MGD77
Data Center File Number: 15040230
Parameters Surveyed Code: 51311
File Creation Date (yyyymmdd): 19
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V T.WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): S.CONSTABLE(SIO);P.JOHNSON(U.WA)
Project: TUNES LEG 4
Funding: NSF OCE89-11587
Survey Departure Date (yyyymmdd): 19911005
Port of Departure: HONOLULU,HAWAII
Survey Arrival Date (yyyymmdd): 19911016
Port of Arrival: HONOLULU,HAWAII
Navigation Instrumentation: GPS,AUTO LOG GYRO+2D DOPPLER SPD
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: SEABEAM VERTICAL BEAM (2&2/3 DEG)
Additional Forms of Bathymetric Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Magnetics Instrumentation: NONE COLLECTED
Gravity Instrumentation: BELL BGM-3 METER
Additional Forms of Gravity Data: MAG TAPE
Seismic Instrumentation: NONE COLLECTED
Topmost Latitude of Survey: +22
Bottommost Latitude: +18
Leftmost Longitude: -158
Rightmost Longitude: -155
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1PING IN H2O
Assumed Sound Velocity: 15000
Interpolation Scheme: 1 MINUTE AVERAGES EXTRACTED FROM SEABEAM VERTICAL BEAMS
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 01
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System Code: 3
Reference System: SYSTEM IGSN 71
Corrections Applied: EOTVOS AND METER DRIFT
Departure Base Station Gravity: 9786989
Departure Base Station Description: DOD2080-9 PAPEETE HARBOR DOCK
Arrival Base Station Gravity: 9789236
Arrival Base Station Description: SNUG HARBOR PIER 49,HONOLULU
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY. SYST_COMMENTS DEPTHS CORRECTED FOR 5 METER SHIP DRAFT, 12.158 kHz, 16 beams, NAVI_INSTRU DR CSE/SPD BETWEEN 10 MINUTE INTERVAL GPS FIXES, GPS PRESENT, 23+ HRS/DAY. Amatec-Straza 2-D Doppler speed log; Sperry MK-27 Gyro; Trimble, GPS Receiver, Mod 4000. GRAVITY COLLECTED BUT NOT PROCESSED. NGDC has multibeam bathymetric data for this cruise, however the tracklines, found here in GEODAS may not exactly correspond to the multibm data available.
Number of Data Records: 7928
Min/Max Data Record:
Date: 1991 10 06
Latitude: +18.65783
Longitude: -157.88617
Bathymetry, 2- Way Traveltime: 000627
Bathymetry, Corrected Depth: 47.0
Min/Max Data Record:
Date: 1991 10 16
Latitude: +21.31667
Longitude: -155.16759
Bathymetry, 2- Way Traveltime: 064000
Bathymetry, Corrected Depth: 4813.0