Accession Number : AD0774947

Title :   Particle Size Distribution and Small-Scale Bed-Forms on Sand Waves, Chesapeake Bay Entrance.

Descriptive Note : Technical rept.,

Corporate Author : OLD DOMINION UNIV NORFOLK VA INST OF OCEANOGRAPHY

Personal Author(s) : Ludwick,John C. ; Wells,John T.

Report Date : 15 JAN 1974

Pagination or Media Count : 112

Abstract : The relationship between sediment texture and topography has been studied along five series of sand waves in Chesapeake Bay entrance, Virginia. Results indicate that two types of distributions are present: sand waves with coarse sediment on crests and fine in troughs, and sand waves with fine sediment on crests and coarse in troughs. Asymmetrical, migrating sand waves exhibit the first type; near-symmetrical, nonmigrating sand waves exhibit the second type. In general, bimodal sediment is present on crests of migrating sand waves and in troughs of stationary sand waves. There is a progressive decrease in percentage of biomodal samples in the Bay entrance sand wave field with distance to the southeast, the direction of net sediment transport. (Modified author abstract)

Descriptors :   *Chesapeake Bay, *Sand, *Waves, Sediment transport, Ocean bottom topography, Particle size, Texture

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE