Survey Identifier: TUNE03WT
Format Acronym: MGD77
Data Center File Number: 15040207
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): L.TALLEY,SIO
Project: WOCE EXPOCODE 31WTTUNES_3, P16C; TUNES LEG 3
Funding: NSF OCE89-11587
Survey Departure Date (yyyymmdd): 19910831
Port of Departure: PAPEETE,TAHITI
Survey Arrival Date (yyyymmdd): 19911001
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: DIGITAL MAG TAPE
Seismic Instrumentation: NONE COLLECTED
Topmost Latitude of Survey: +22
Bottommost Latitude: -18
Leftmost Longitude: -158
Rightmost Longitude: -149
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, SIO. DEPTHS CORRECTED FOR 5M SHIP DRAFT. NAVIGATION: DR CSE/SPD BETWEEN 10 MINUTE INTERVAL GPS FIXES, GPS PRESENT 23+ HRS/DAY. GRAVITY COLLECTED BUT NOT PROCESSED, GRAVITY: 1 SEC METER COUNTS FILTERED WITH 25 POLE FILTER WITH 148 SEC DELAY. FREE AIR ANOMALY SPIKES PRESENT BECAUSE SAME FILTER NOT USED FOR NAVIGATION.
Number of Data Records: 21425
Min/Max Data Record:
Date: 1991 09 01
Latitude: -17.53900
Longitude: -157.88634
Bathymetry, 2- Way Traveltime: 000587
Bathymetry, Corrected Depth: 44.0
Min/Max Data Record:
Date: 1991 10 01
Latitude: +21.31639
Longitude: -149.57872
Bathymetry, 2- Way Traveltime: 083013
Bathymetry, Corrected Depth: 6289.0