Survey Identifier: AVON11MV
Format Acronym: MGD77
Data Center File Number: 15020195
Parameters Surveyed Code: 51511
File Creation Date (yyyymmdd): 20040507
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V MELVILLE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): JAMES MERCER,U.OF WASHINGTON
Project: AVON EXPEDITION LEG 11
Funding: ATOC/ONR
Survey Departure Date (yyyymmdd): 19990814
Port of Departure: SAN FRANCISCO,CALIFORNIA
Survey Arrival Date (yyyymmdd): 19990818
Port of Arrival: EUREKA,CALIFORNIA
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: 41
Bottommost Latitude: 37
Leftmost Longitude: -125
Rightmost Longitude: -122
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: ??????
Departure Base Station Description: SAN FRANCISCO,CALIFORNIA
Arrival Base Station Gravity: ??????
Arrival Base Station Description: EUREKA,CALIFORNIA
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: 5283
Min/Max Data Record:
Date: 1999 08 14
Latitude: +37.30835
Longitude: -124.63914
Bathymetry, 2- Way Traveltime: 000413
Bathymetry, Corrected Depth: 31.0
Observed Gravity: 9798666
Free-Air Anomaly: -0759
Min/Max Data Record:
Date: 1999 08 18
Latitude: +40.79463
Longitude: -122.38286
Bathymetry, 2- Way Traveltime: 043467
Bathymetry, Corrected Depth: 3239.0
Observed Gravity: 9802272
Free-Air Anomaly: +0359