Department of Oceanography
Naval Postgraduate School
Monterey, CA 93943-5000

November 3, 2008

Oceanography Seminar

SPEAKER:

David A. Cacchione, Ph.D

AFFILIATION:

U. S. Geological Survey, Emeritus

TITLE:

Internal Waves and Sediment Transport in the Oceans

DATE:

Monday, Nov. 10, 2008

TIME:

12:00 PM

PLACE:

Spanagel 316

ABSTRACT

A review of the geologic effects of oceanic internal waves and tides is presented, including how internal tides might shape the seafloor on continental margins. Strong bottom flows and bed stresses associated with interactions of internal waves and topography can inhibit fine-grained sediment deposition, resuspend bottom sediment, and transport suspended particulate materials across and along shelves and slopes. These processes are not well understood, but they have major consequences for distribution and accumulations of sediments over continental margins. Examples of field studies are used to demonstrate the significance of internal waves and tides in sedimentary processes in the oceans.

NOTE: Gate access requires 48 hour notice. Please notify Susan (656-2553) if you need to be placed on the gate access list. For more information about the NPS Oceanography Department Seminar Series, see http://www.oc.nps.navy.mil/seminars.