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USGS CMG K-1-04-PS Metadata

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ID K-1-04-PS
Abstract United States Geological Survey, Menlo Park, California. Chief Scientist: Eric Grossman. Geological and Geophysical data (bathymetry, underwatertelevision, groundpenetratingradar, vibratingcore, VanVeengrab, imagery) of field activity K-1-04-PS in Skagit River Delta, Puget Sound, WA from 03/06/2004 to 03/07/2004
Organization United States Geological Survey, Menlo Park, California
Project/Theme Coastal Habitats in Puget Sound
Chief Scientist Eric Grossman
Activity Type Geological and Geophysical
Platform Karluk
Area of Operation Skagit River Delta, Puget Sound, WA, Puget Sound, WA
Bounding Coordinates
48.41931
-122.59655    -122.48172
48.26192
Ports leave Seattle
arrive Pt. Angeles
Dates 03/06/2004 (JD 066) to 03/07/2004 (JD 067)
Analog Materials list
Scanned Materials k-1-04-ps log (pdf)
Information Specialist
Eric Grossman
Crew
Eric Grossman Chief Scientist, USGS Western Region
Mike Boyle Mechanical Engineer, USGS Western Region
Larry Kooker Electronic Engineer, USGS Western Region
Andy Stevenson Information Specialist, USGS Western Region
Bill Danforth Information Specialist, USGS Woods Hole
Greg Hood Scientist, Skagit River System Cooperative
Jesse Stark Captain, NOAA
Equipment Used
bathymetry
underwatertelevision
groundpenetratingradar
vibratingcore
VanVeengrab
imagery
Purpose
Submetrix swath sonar work, ship-towed video, ground penetrating radar, coring, 
and sediment and eelgrass grab samples.
Information to be Derived
Bathymetry and substrate type (backscatter) of Skagit Bay
Shallow stratigraphy and facies (<10 m) of marsh and delta subenvironments
using GPR
Shallow sedimentology, lithology and depositional history based on
compositional analyses and radiometric dating of sediments and organics
subsampled from cores.
Surface sediment contaminants, organic geochemistry and eelgrass biomarker
concentrations and isotopes from sediment grabs.
Summary
Bathymetry data along delta front shows evidence that sediment is
accumulating and burying eelgrass habitats. Ship tow video reveals that
extensive areas previously colonized by eelgrass (in aerial photographs of
1990 and 2000) are now covered by fine sand and silt. GPR data image the
distribution and morphology of tidal and distributary channels now buried
beneath agricultural land.
Sediments from cores show 1-3 m of recent fine marsh sediments and peats
overlying more than 3-7 m of medium to coarse sands interpreted as past
tide flats. Calibrated 14C ages of wood and shells more than 10 m below the
marsh surface across more than 1 km2 area of the Southern Skagit Delta
range 150 to 400 yr BP signifying rapid rates of vertical accumulation (2.3
to 6.3 cm/yr) over the historical period. Preliminary analyses of surface
sediments show that eelgrass biomarkers may be preserved in the recent
geological record and may serve as a proxy for past eelgrass abundance.
Notes
files exist on /imgarc2/K-1-04-PS/
Publications
Deltaic Habitats in Puget Sound--Natural Versus Human-Related Change [http://soundwaves.usgs.gov/2005/01/fieldwork3.html]
Got Help? For K-1-04-PS, we would appreciate any information on -- contract, days at sea, dive count, funding, kms of navigation, national plan, NGDC Info, owner, project number, scanned materials, seismic description, station count, station description, submersible, tabulated info.
Type Webpage KMZ Arc         Metadata        
Imagery data      
Metadata data     txt  data  FAQ  xml
Navigation data nav    
Samples data samp    
Times   060.times
061.times
   

K-1-04-PS location map of where navigation 

equipment operated
K-1-04-PS location map of where navigation 

equipment operated

 
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Page Last Modified: Tue Oct 29 12:42:38 PDT 2013  (chd)