Survey Identifier: ENCR01WT
Format Acronym: MGD77
Data Center File Number: 15040223
Parameters Surveyed Code: 55311
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. DORMAN
Project: ENCORE LEG 1
Funding: NSF/OCE91-03919
Survey Departure Date (yyyymmdd): 19920402
Port of Departure: SAN DIEGO, CALIFORNIA
Survey Arrival Date (yyyymmdd): 19920507
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
Additional Forms of Bathymetric Data: NO HARDCOPY RECORDS
Magnetics Instrumentation: GEOMETRICS MAGNETOMETER MOD G-801/3
Additional Forms of Magnetics Data: DIGITAL MAG. TAPE,ANAL. REC,35MM FILM
Gravity Instrumentation: COLLECTED BY SIO/IGPP
Additional Forms of Gravity Data: NOT PROCESSED BY GDC
Seismic Instrumentation: EXPLOSIVES TO OBS
Formats of Seismic Data: COLLECTED BY SIO/GRD
Topmost Latitude of Survey: +33
Bottommost Latitude: +01
Leftmost Longitude: -118
Rightmost Longitude: -101
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, BOTH RECORDERS WERE USED FOR EXPLOSIVE SURVEYS - NO ANALOGUE DEPTH RECORDS, DEPTHS CORRECTED FOR 5 METER SHIP DRAFT. GPS PRESENT 23+ HRS/DAY, NAVIGATION: DR CSE/SPD BETWEEN 10 MINUTE INTERVAL GPS FIXES, GRAVITY COLLECTED BY J.HILDEBRAND ON LACOSTE GRAVITYMETER, NGDC has multibeam bathymetric data for this cruise, however the tracklines, found here in GEODAS do not exactly correspond to the multibeam data.
Number of Data Records: 31403
Min/Max Data Record:
Date: 1992 04 02
Latitude: +1.49401
Longitude: -117.23717
Bathymetry, 2- Way Traveltime: 000427
Bathymetry, Corrected Depth: 32.0
Magnetics Total Field, 1st Sensor: 320890
Magnetics Residual Field: -08556
Min/Max Data Record:
Date: 1992 05 08
Latitude: +32.70700
Longitude: -101.05166
Bathymetry, 2- Way Traveltime: 072080
Bathymetry, Corrected Depth: 5437.0
Magnetics Total Field, 1st Sensor: 416200
Magnetics Residual Field: +04342