Survey Identifier: SMNT01WT
Format Acronym: MGD77
Data Center File Number: 15040159
Parameters Surveyed Code: 55533
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: SEAMOUNT LEG 1
Funding: ONR-0440 & 0472
Survey Departure Date (yyyymmdd): 19830617
Port of Departure: SAN DIEGO,CALIFORNIA
Survey Arrival Date (yyyymmdd): 19830628
Port of Arrival: SAN DIEGO,CALIFORNIA
Navigation Instrumentation: SATNAV, AUTO LOG GYRO+2D DOPPLER SPD LOG
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: SEABEAM VERT.BEAM(2&2/3DEG)&3.5KHZ(WIDE)
Additional Forms of Bathymetric Data: ANAL.REC,35MM FILM,DIGITAL MAG TAPE
Magnetics Instrumentation: VARIAN PROTON
Additional Forms of Magnetics Data: ANAL.REC,DIGITAL TAPE
Gravity Instrumentation: ASKANIA GSS2,ANSCHUTZ ELECT.GYTO TABLE
Additional Forms of Gravity Data: ANAL.RECORDS
Seismic Instrumentation: WATERGUN,DIGITAL,1 CHANNEL;AIRGUN PAR600
Formats of Seismic Data: ANAL.RECORDS,35MM FILM
Topmost Latitude of Survey: +33
Bottommost Latitude: +30
Leftmost Longitude: -127
Rightmost Longitude: -117
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1PING IN H20
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
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 1980
Method of Applying Residual Field: LIN.INTERP.POINTS WITHIN ONE DEGREE SQUARE
General Digitizing Rate of Gravity: 10
General Sampling Rate of Gravity: 20
Theoretical Gravity Formula Code: I
Theoretical Gravity Formula: AG SYSTEM 1967 2
Reference System Code: P
Reference System: OTSDAM SYSTEM
Additional Documentation: DEPTHS CORRECTED FOR 5 METER SHIP DRAFT.
Number of Data Records: 15141
Min/Max Data Record:
Date: 1983 06 17
Latitude: +30.04170
Longitude: -126.44570
Bathymetry, 2- Way Traveltime: 001125
Bathymetry, Corrected Depth: 84.0
Magnetics Total Field, 1st Sensor: 458870
Magnetics Residual Field: -03469
Free-Air Anomaly: -6595
Min/Max Data Record:
Date: 1983 06 28
Latitude: +32.74010
Longitude: -117.38750
Bathymetry, 2- Way Traveltime: 062725
Bathymetry, Corrected Depth: 4709.0
Magnetics Total Field, 1st Sensor: 483140
Magnetics Residual Field: +04975
Free-Air Anomaly: +1106