Survey Identifier: TUNE09WT
Format Acronym: MGD77
Data Center File Number: 15040233
Parameters Surveyed Code: 55133
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): P.LONSDALE
Project: TUNES LEG 9
Funding: NSF/OCE91-02183,NRL
Survey Departure Date (yyyymmdd): 19920203
Port of Departure: MAJURO, MARSHALL ISLANDS
Survey Arrival Date (yyyymmdd): 19920228
Port of Arrival: SAN DIEGO, CALIFORNIA
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)&3.5KHZ
Additional Forms of Bathymetric Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Magnetics Instrumentation: GEOMETRICS MAGNETOMETER MOD G-801/3
Additional Forms of Magnetics Data: DIGITAL MAG. TAPE,ANAL. REC,35MM FILM
Gravity Instrumentation: NONE COLLECTED
Seismic Instrumentation: WATER GUN 80 CUBIC INCH
Formats of Seismic Data: ANAL.REC,35MM FILM,
Topmost Latitude of Survey: +34
Bottommost Latitude: +07
Leftmost Longitude: +166
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 Magnetics: 010
General Sampling Rate of Magnetics: 06
Reference Field Code: 88
Reference Field: IGRF-1990
Method of Applying Residual Field: LIN.INTERP.POINTS WITHIN ONE DEGREE SQUARE
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, time instrumentation = Hewlett-Packard HP-5065A rubidium frequency standard. 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.
Number of Data Records: 34495
Min/Max Data Record:
Date: 1992 02 03
Latitude: +7.08933
Longitude: -179.99863
Bathymetry, 2- Way Traveltime: 000547
Bathymetry, Corrected Depth: 41.0
Magnetics Total Field, 1st Sensor: 334390
Magnetics Residual Field: -08575
Min/Max Data Record:
Date: 1992 02 28
Latitude: +33.98274
Longitude: +179.99852
Bathymetry, 2- Way Traveltime: 087467
Bathymetry, Corrected Depth: 6632.0
Magnetics Total Field, 1st Sensor: 480370
Magnetics Residual Field: +06534