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Continental Shelf Research 25 (2005) 22132232 Storm layer deposition on the MississippiAtchafalaya

Summary: Continental Shelf Research 25 (2005) 2213≠2232
Storm layer deposition on the Mississippi≠Atchafalaya
subaqueous delta generated by Hurricane Lili in 2002
Mead A. Allisona,√, Alexandru Sheremetb
, Miguel A. Gon~ ic
, Gregory W. Stoneb
Department of Earth and Environmental Sciences, Tulane University, New Orleans, LA 70118, USA
Coastal Studies Institute and Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331-5503, USA
Received 24 May 2005; received in revised form 11 August 2005; accepted 29 August 2005
The Atchafalaya inner continental shelf, located along the north-central Gulf of Mexico offshore of Louisiana, is an area
of rapid mud accumulation associated with the progradation of a subaqueous delta originating from this Mississippi River
distributary. In September≠October 2002, this region was impacted by two tropical cyclones (Tropical Storm Isidore and
Hurricane Lili) separated by only 7 days. Water-column and hydrodynamic records from coastal observation platforms
(WAVCIS network) are combined with seabed sampling 4≠7 days after passage of Lili, to examine the impact of these
events on the Atchafalaya inner shelf. Wind speeds at the CSI-3 platform on the delta (located in 4.5 m of water) peaked at


Source: Allison, Mead - Institute for Geophysics, University of Texas at Austin
Goni, Miguel A. - College of Oceanic and Atmospheric Sciences, Oregon State University


Collections: Environmental Sciences and Ecology; Geosciences