Survey Identifier: REM-01MV
Format Acronym: MGD77
Data Center File Number: 15020140
Parameters Surveyed Code: 51111
File Creation Date (yyyymmdd): 19
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V MELVILLE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): SPIESS,F.
Project: REM LEG 01
Survey Departure Date (yyyymmdd): 19930810
Port of Departure: SAN DIEGO, CALIFORNIA
Survey Arrival Date (yyyymmdd): 19930907
Port of Arrival: ASTORIA, OREGON
Navigation Instrumentation: GPS,TRIMBLE 4000AX
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: SEABEAM 2000 w/ SIDESCAN
Additional Forms of Bathymetric Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Magnetics Instrumentation: NONE COLLECTED
Gravity Instrumentation: NONE COLLECTED
Seismic Instrumentation: NONE COLLECTED
Topmost Latitude of Survey: +49
Bottommost Latitude: +32
Leftmost Longitude: -131
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: 03
Reference Field: IGRF-1990
Method of Applying Residual Field: LIN.INTERP.POINTS WITHIN ONE DEGREE SQUARE
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: add lat
Departure Base Station Description: er
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY, DEPTHS CORRECTED FOR 5 METER SHIP DRAFT. NAVIGATION: DR BETWEEN 1 MINUTE, INTERVAL GPS FIXES. GPS PRESENT 24 HRS/DAY. GRAVITY: 1 SEC METER COUNTS, FILTERED WITH 99 DEC STD.DEV. GAUSSIAN CONVOLUTION WINDOW. FREE AIR ANOMALY, SPIKES PRESENT BECAUSE SAME FILTER NOT USED FOR NAVIGATION. FOLLOWING INFO, FROM MULTIBEAM BATHYMETRY: Heading Sensor Sperry MK23 Gyro; Vertical reference, unit sensor Datawell Hippy Model 120; Navigation: Horizontal_Datum WGS84.
Number of Data Records: 42365
Min/Max Data Record:
Date: 1993 08 09
Latitude: +32.61350
Longitude: -130.76483
Bathymetry, 2- Way Traveltime: 001347
Bathymetry, Corrected Depth: 101.0
Min/Max Data Record:
Date: 1993 09 07
Latitude: +48.38933
Longitude: -117.22583
Bathymetry, 2- Way Traveltime: 064387
Bathymetry, Corrected Depth: 4833.0