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ID 96030
Also Known As 96030
WCMAW-1-96-NC
W-1-96-NC
WCMAW-1-96-NC
Strataform
Abstract United States Geological Survey, Menlo Park, California. Chief Scientists: Mike Field, Jim Gardner. Geophysical data (Huntec, SIS1000) of field activity 96030 (W-1-96-NC) in Eureka, CA shelf and slope from 06/29/1996 to 07/08/1996
Organization United States Geological Survey, Menlo Park, California
Project/Theme Strata Formations on Margins (Strataform)
National Plan Strataform (OFA)
Chief Scientist Mike Field
Jim Gardner
Activity Type Geophysical
Platform Wecoma
Area of Operation Eureka, CA shelf and slope, Northern California
Bounding Coordinates
41.31778
-124.77558    -124.17098
40.55345
Ports leave Eureka, CA
arrive Eureka, CA
Dates 06/29/1996 (JD 181) to 07/08/1996 (JD 190)
Analog Materials list
Crew
Mike Field Chief Scientist, USGS Western Region
Jim Gardner Co-chief Scientist, USGS Western Region
John Gann Elec. Tech, USGS Western Region
Tom O'Brien Elec. Tech, USGS Woods Hole
Pete Dartnell Watchstander, USGS Western Region
Ian Wallace Watchstander, USGS Western Region
Stuart Sides Watchstander, USGS Western Region
Graham Dundee Elec Tech, Geoforce
Equipment Used
Huntec
SIS1000
Purpose
Image upper 50m of sediment to determine architecture of depositional units.
Information to be Derived
Cross sections, fence diagrams, isopach maps (see Pete Dartnell, Project 
Information Coordinator)
Summary
Isopachs of various sediment units
Notes
Associated cruises:

  W-2-95-NC   W-1-96-NC
For raw and intermediate data sets, contact Rani Nandiwada
From Western Region Marine and Coastal Surveys Bulletin, July 12, 1996... SUCCESS ON THE HIGH SEAS OFF EUREKA This week we completed a very successful 9-day survey aboard the RV WECOMA of the shelf and slope offshore of Eureka in the area designated as the STRATAFORM area. One of the major goals of the STRATAFORM Project is to gain a better understanding of how strata are deposited, both in terms of the physical processes and also in terms of the preserved acoustic signatures, such as downlap, offlap, and toplap. A complementary goal is to learn how the signatures combine to form characteristic stratigraphic sequences, such as drapes, aprons, wedges, and sigmoids. An essential element to gain this understanding is the analysis and interpretation of geometries of acoustic reflectors in the upper 50 m of the outer shelf and slope. The cruise aboard the WECOMA of Oregon State University was the second in 10 months devoted to these goals and resulted in over 1100 km of high-resolution seismic-reflection data using the Huntec DTS and high-resolution sidescan sonar using the Datasonics SIS-1000 system. Thanks to an excellent support team from Marfac, and at-sea support extraodinaire from our John Gann and Tom O'Brien from Woods Hole, we achieved all of our objectives, despite some LARGE waves and ubiquitous crab pots. The results are outstanding from our viewpoint, and they should provide lots of new insights for understanding the late Quaternary development of the shelf and slope, particularly with regard to channel flows on slopes, the Humboldt submarine slide, and tectonic deformation of late Quaternary deposits. The data are being processed and archived at present. If you are interested in more information, our cruise report, tracklines, and a few images are available on the web at our marine facility page ---http://marfac044.wr.usgs.gov. Look for it to appear in our WUSGS site on walrus in the very near future. Mike Field amd Jim Gardner
Publications
Cruise Report exists at Woods Hole
Borgeld, J. C., Hughes-Clarke, J. E., Goff, J. A., Mayer, L. A., and Curtis, J. A, 1999, Acoustic backscatter of the 1995 flood deposit on the Eel shelf, in Nit trouer, C.A., ed., The Formation of Continental-Margin Strata: Marine Geology, v . 154, p. 197-210. Retrieved from http://www.sciencedirect.com/science/journal/ 00253227 Cacchione, D., Wiberg, P., Lynch, J., Irish, J., and Traykovski, P, 1999, Estima tes of suspended-sediment flux and bedform activity on the inner portion of the Eel continental shelf, in Nittrouer, C.A., ed., The Formation of Continental-Mar gin Strata: Marine Geology, v. 154, p. 83-97. Drake, D. E, 1999, Temporal and spatial variability of the sediment grain-size d istribution on the Eel shelf; the flood layer of 1995, in Nittrouer, C.A., ed., The Formation of Continental-Margin Strata: Marine Geology, v. 154, p. 169-182. Borgeld, J. C., Hughes-Clarke, J. E., Goff, J. A., Mayer, L. A., and Curtis, J. A, 1999, Acoustic backscatter of the 1995 flood deposit on the Eel shelf, in Nittrouer, C.A., ed., The Formation of Continental-Margin Strata: Marine Geology, v. 154, p. 197-210. Retrieved from http://www.sciencedirect.com/science/journal/00253227 Cacchione, D., Wiberg, P., Lynch, J., Irish, J., and Traykovski, P, 1999, Estimates of suspended-sediment flux and bedform activity on the inner portion of the Eel continental shelf, in Nittrouer, C.A., ed., The Formation of Continental-Margin Strata: Marine Geology, v. 154, p. 83-97. Drake, D. E, 1999, Temporal and spatial variability of the sediment grain-size distribution on the Eel shelf; the flood layer of 1995, in Nittrouer, C.A., ed., The Formation of Continental-Margin Strata: Marine Geology, v. 154, p. 169-182. Field, M. E., Gardner, J. V., and Prior, D. B, 1999, Geometry and significance of stacked gullies on the northern California slope, in Nittrouer, C.A., ed., The Formation of Continental-Margin Strata: Marine Geology, v. 154, p. 271-286. Gardner, J. V., Prior, D. B., and Field, M. E, 1999, Humboldt slide; a large shear-dominated retrogressive slope failure, in Nittrouer, C.A., ed., The Formation of Continental-Margin Strata: Marine Geology, v. 154, p. 323-338. Goff, J. A., Orange, D. L., Mayer, L. A., and Hughes-Clarke, J. E, 1999, Detailed investigation of continental shelf morphology using a high-resolution swath sonar survey; the Eel margin, northern California, in Nittrouer, C.A., ed., The Formation of Continental-Margin Strata: Marine Geology, v. 154, p. 255-269. Retrieved from http://www.sciencedirect.com/science/journal/00253227 Lee, H., Locat, J., Dartnell, P., Israel, K., and Wong, F. L, 1999, Regional variability of slope stability; application to the Eel margin, California, in Nittrouer, C.A., ed., The Formation of Continental-Margin Strata: Marine Geology, v. 154, p. 305-321. Nittrouer, Charles A., editor, 1999, The Formation of Continental-Margin Strata: Marine Geology v. 154, p. 1-420, http://www.sciencedirect.com/. [book volume]
Got Help? For 96030, we would appreciate any information on -- contract, days at sea, dive count, funding, information specialist, kms of navigation, NGDC Info, owner, project number, scanned materials, seismic description, station count, station description, submersible, tabulated info.
Type Webpage KMZ Arc         Metadata         WHSC
Imagery data        
Metadata data     txt  data  FAQ  xml data
Navigation data nav     data
Seismic data seis      
Times   060.times      

96030 location map of where navigation 

equipment operated
96030 location map of where navigation 

equipment operated

 
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