Survey Identifier: NV9704MV
Format Acronym: MGD77
Data Center File Number: 15020174
Parameters Surveyed Code: 51511
File Creation Date (yyyymmdd): 20001129
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V MELVILLE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): TRANSIT LEG
Project: NAVOCEANO EXPEDITION LEG 4
Funding: NAVO
Survey Departure Date (yyyymmdd): 19971006
Port of Departure: ASTORIA,OREGON
Survey Arrival Date (yyyymmdd): 19971010
Port of Arrival: SAN DIEGO,CALIFORNIA
Navigation Instrumentation: TRIMBLE TASMAN P(Y) GPS
Geodetic Datum/Position: WGS-84; LINEAR FIT TO 60 SEC FIXES
Bathymetry Instrumentation: SEABEAM 2000 w/SIDESCAN
Additional Forms of Bathymetric Data: DIGITAL MAG. TAPE
Additional Forms of Magnetics Data: NONE COLLECTED
Gravity Instrumentation: BELL BGM-3 METER
Additional Forms of Gravity Data: DIGITAL TAPE
Formats of Seismic Data: NONE COLLECTED
Topmost Latitude of Survey: 47
Bottommost Latitude: 32
Leftmost Longitude: -126
Rightmost Longitude: -117
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1PING IN H2O
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: ONE MINUTE VALUES EXTRACTED FROM SEABEAM CENTER BEAM
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 Description: DOD60623ASTORIA,OREGON
Arrival Base Station Gravity: 979535.
Arrival Base Station Description: 5MARFAC PIER,SAN DIEGO,CALIF.
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY, DEPTHS CORRECTED FOR 5 METER SHIP DRAFT. GRAVITY: 1 SEC METER COUNTS FILTERED, WITH 99 SEC STD.DEV.GAUSSIAN CONV.WINDOW. FREE AIR ANOMALY SPIKES MAY BE, PRESENT BECAUSE SAME FILTER NOT USED FOR NAV. FOLLOWING INFO FROM MULTIBEAM, BATHYMETRY: Heading Sensor Sperry MK 23 Gyro; Vertical reference unit sensor, Datawell Hippy Model 120; Navigation: Horizontal_Datum WGS84; Uncorrected, meters, assumed SV 1500m/sec; Ship draft 5; Surface sound velocity sensor.
Number of Data Records: 4572
Min/Max Data Record:
Date: 1997 10 06
Latitude: +32.62868
Longitude: -125.63353
Bathymetry, 2- Way Traveltime: 000227
Bathymetry, Corrected Depth: 17.0
Observed Gravity: 9794101
Free-Air Anomaly: -0900
Min/Max Data Record:
Date: 1997 10 10
Latitude: +46.25776
Longitude: -117.22477
Bathymetry, 2- Way Traveltime: 048667
Bathymetry, Corrected Depth: 3632.0
Observed Gravity: 9807711
Free-Air Anomaly: +0329