Survey Identifier: A118L22
Format Acronym: MGD77
Data Center File Number: 17080015
Parameters Surveyed Code: 51111
File Creation Date (yyyymmdd): 19900315
Source Institution: UNIVERSITY OF RHODE ISLAND
Country: USA
Platform Name: R/V ATLANTIS II
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): J. DEMING/J. DELANEY
Project: A118L22
Funding: NSF
Survey Departure Date (yyyymmdd): 19871009
Port of Departure: NEWPORT, OREGON
Survey Arrival Date (yyyymmdd): 19871016
Port of Arrival: SEATTLE, WASHINGTON
Navigation Instrumentation: LORAN-C, GPS, TRANSIT SATELLITE
Geodetic Datum/Position: PRIM-LORAN
Bathymetry Instrumentation: SEA BEAM vertical beam
Additional Forms of Bathymetric Data: ANALOG
Topmost Latitude of Survey: +49
Bottommost Latitude: +44
Leftmost Longitude: -131
Rightmost Longitude: -124
General Digitizing Rate of Bathymetry: 012
General Sampling Rate of Bathymetry: VAR-W-DEPTH
Assumed Sound Velocity: 15000
Interpolation Scheme: 1 MINUTE AVERAGES
Additional Documentation: Loran data used to match NOAA (Loran) base maps. Alvin dives
Number of Data Records: 5521
Min/Max Data Record:
Date: 1987 10 09
Latitude: +44.67632
Longitude: -130.52725
Bathymetry, 2- Way Traveltime: 001000
Bathymetry, Corrected Depth: 75.0
Min/Max Data Record:
Date: 1987 10 16
Latitude: +48.45047
Longitude: -124.19195
Bathymetry, 2- Way Traveltime: 039920
Bathymetry, Corrected Depth: 2966.0