A 1:20,000 scale reconnaissance survey was conducted for the USGS in the vicinity of Cape Mendocino, California, to analyze seafloor uplift caused by the 1992 earthquake.
Description
United States Geological Survey, Menlo Park, California,National Oceanic and Atmospheric Administration. Chief Scientist: Sam Clarke. Geophysical data (echosounder, soundvelocityprofiler, GPS) of field activity R-1-94-NC in Cape Mendocino, CA from 04/20/1994 to 04/20/1994
Location
CA
Summary
During the transit south to the working grounds the weather conditions, 5 to 7 m swells and 40 to 60 knot winds, prevented this survey from being conducted. The three desired tracks were completed on the transit north with the following conditions, 1 to 3 m swells and 5 to 15 knot winds. All data was acquired in Universal Coordinated Time. Soundintgs were taken in meters with a Raytheon DSF-6000N echosounder (S/N B0044N) with the following correctors applied: static draft, settlement, and squat, sound velocity, and tides. A velocity cast was taken on April 20 and the correctors calculated to 853 meters. the tide correctors were figured on San Francisco for Cape Mendocino applying the following correctors: Time High -28m, Low +01m, Height High -0.1ft, Low 0.0ft. The survey was controlled by non-differential GPS which due to dithering, has a positional accuracy radius of 100 meters. NAD83 was the horizontal datum used for this survey. The shoreline was transferred from an enlargement of NOS chart 18623 10th edition, April 14, 1994 and is for orientation purposes only.
Comments
Staff information imported from InfoBank
Russell C. Arnold (NOAA) - Ship Captain
Length 231 feet; beam 42 feet; draft 17 feet. Launched 1967, USCGS (United States Coast and Geodetic Survey) owned 1968 to 1970. NOAA acquired in 1970. She is named for Mount Rainier in the state of Washington and is the sister ship of NOAAS Fairweather and the decommissioned NOAAS Mount Mitchell.
