Survey Identifier: LWAD99MV
Format Acronym: MGD77
Data Center File Number: 15020197
Parameters Surveyed Code: 51511
File Creation Date (yyyymmdd): 20040511
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V MELVILLE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): JAMES MCEACHERN,NAVAL AIR WARF.
Project: LITTORAL WATER ADVANCED DEVEL. 99
Funding: NAVAL AIR WARFARE
Survey Departure Date (yyyymmdd): 19990905
Port of Departure: SAN DIEGO, CALIF.
Survey Arrival Date (yyyymmdd): 19990920
Port of Arrival: SAN DIEGO, CALIF.
Navigation Instrumentation: TRIMBLE TASMAN P(Y) GPS
Geodetic Datum/Position: LINEAR FIT TO 60 SEC FIXES
Bathymetry Instrumentation: SEABEAM 2000 w/SIDESCAN
Additional Forms of Bathymetric Data: ANAL.REC.,35MM FILM,DIGITAL TAPE
Gravity Instrumentation: BELL BGM-3 METER
Additional Forms of Gravity Data: DIGITAL TAPE
Topmost Latitude of Survey: 45
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
Interpolation Scheme: 1 MINUTE VALUES EXTRACTED FROM SEABEAM VERTICAL 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 Gravity: 979533
Departure Base Station Description: MARFAC PIER, SAN DIEGO, CALIF.
Arrival Base Station Gravity: 979533
Arrival Base Station Description: MARFAC 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: 22647
Min/Max Data Record:
Date: 1999 09 04
Latitude: +32.61665
Longitude: -125.21689
Bathymetry, 2- Way Traveltime: 000587
Bathymetry, Corrected Depth: 44.0
Observed Gravity: 9793637
Free-Air Anomaly: -0967
Min/Max Data Record:
Date: 1999 09 20
Latitude: +44.55757
Longitude: -117.22520
Bathymetry, 2- Way Traveltime: 041427
Bathymetry, Corrected Depth: 3084.0
Observed Gravity: 9806246
Free-Air Anomaly: +0541