Survey Identifier: TUNE01WT
Format Acronym: MGD77
Data Center File Number: 15040205
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): M.TSUCHIYA,SIO
Project: WOCE EXPOCODE 31WTTUNES_1, P17C; TUNES LEG 1
Funding: NSF OCE89-11587
Survey Departure Date (yyyymmdd): 19910531
Port of Departure: SAN DIEGO. CALIFORNIA
Survey Arrival Date (yyyymmdd): 19910711
Port of Arrival: PAPEETE, TAHITI
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: +37
Bottommost Latitude: -18
Leftmost Longitude: -150
Rightmost Longitude: -117
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: 9795355
Departure Base Station Description: SIO MARFAC PIER, SAN DIEGO
Arrival Base Station Gravity: 9786989
Arrival Base Station Description: DOD2080-9 PAPEETE HARBOR DOCK
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/DAYOUT PROCESSED. 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: 32181
Min/Max Data Record:
Date: 1991 05 31
Latitude: -17.54065
Longitude: -149.60336
Bathymetry, 2- Way Traveltime: 001467
Bathymetry, Corrected Depth: 110.0
Min/Max Data Record:
Date: 1991 07 11
Latitude: +36.17315
Longitude: -117.22684
Bathymetry, 2- Way Traveltime: 074173
Bathymetry, Corrected Depth: 5600.0