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USGS CMG R-1-94-NC Metadata

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ID R-1-94-NC
Abstract 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
Organization United States Geological Survey, Menlo Park, California
National Oceanic and Atmospheric Administration
Project/Theme Cape Mendocino 1992 Earthquake Study
Chief Scientist Sam Clarke
Activity Type Geophysical
Platform Rainier
Area of Operation Cape Mendocino, CA, Northern California
Bounding Coordinates
41.75000
-125.75000    -122.25000
37.75000
Dates 04/20/1994 (JD 110) to 04/20/1994 (JD 110)
Analog Materials list
Crew
Russell C. Arnold Ship Captain, NOAA
Equipment Used
echosounder
soundvelocityprofiler
GPS
Purpose
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.
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.
Got Help? For R-1-94-NC, we would appreciate any information on -- contract, days at sea, dive count, funding, information specialist, information to be derived, kms of navigation, national plan, NGDC Info, notes, owner, ports, project number, publications, scanned materials, seismic description, station count, station description, submersible, tabulated info.
Type Webpage KMZ Arc         Metadata        
Metadata data     txt  data  FAQ  xml
Navigation data nav    
Times   050.times    

R-1-94-NC location map of where navigation 

equipment operated

 
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Page Last Modified: Tue Oct 29 15:09:41 PDT 2013  (chd)