Skip Links

USGS - science for a changing world

Woods Hole Coastal and Marine Science Center

Woods Hole Coastal and Marine Science Center > Coastal Model Applications and Field Measurements > Study Sites > Palos Verdes Superfund Investigations

Coastal Model Applications and Field Measurements coastal ocean processes,open source coastal ocean models, oceanography, ocean modeling, sediment transport

Palos Verdes Shelf

Sediment on the Palos Verdes Shelf near Los Angeles is contaminated with DDT and PCBs discharged from sewer outfalls. Since 1991, the USGS has been studying this deposit and the sedimentary and biogeochemical processes that are controlling the evolution of this deposit. The most recent work has been associated with US EPA Superfund Investigations and has focused on remediation of the site.

Colored contour map           Color photos of sand and pellets of various sizes

Map of changes between 1992 and 2010 in the fraction of Palos Verdes shelf sediment comprised of fecal pellets, with blue indicating increases of up to 0.4, and red indicating decreases down to -0.4.

          

Fecal pellets from bottom sediment on the Palos Verdes Shelf near Los Angeles. Fine silt has been repackaged into low-density sand-sized pellets, which changes the sediment-transport characteristics.


 

Accessibility FOIA Privacy Policies and Notices

USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://woodshole.er.usgs.gov/project-pages//project-pages/coastal_model/study-sites/palos-verdes.html
Page Contact Information: Feedback
Page Last Modified: (GW)