Accession Number : ADA300851

Title :   Augmentation of Studies into the Development and Evolution of Sedimentary Structures.

Descriptive Note : Annual progress rept.,

Corporate Author : STATE UNIV OF NEW YORK AT STONY BROOK MARINE SCIENCES RESEARCH CENTER

Personal Author(s) : Nittrouer, Charles A. ; Lopez, Glenn R.

PDF Url : ADA300851

Report Date : 1995

Pagination or Media Count : 12

Abstract : Sedimentological studies were conducted in central Eckernfoerde Bay. Sediment is characterized by beds of clay-sized material, with slightly coarser laminations (approx. 10% silt and sand). Excess 234Th activity indicates that mixing is limited to the upper 5 mm of the seabed. Accumulation rates, measured by 210Pb geochronology, range from 5 to over 10 mm/yr. The relatively high accumulation rates and absence of a significant mixed layer in the central bay allow fluctuations of sedimentological processes to be recorded in fine detail. Sediment-transport studies indicate that the laminated bedding is caused by alternating deposition of storm-suspended sediments from adjacent shallow-water areas and fair-weather supply of fine suspended material advected from the open Baltic.

Descriptors :   *SEDIMENT TRANSPORT, *SUSPENDED SEDIMENTS, *SEDIMENTOLOGY, DISTRIBUTION, AUGMENTATION, GRAIN SIZE, SAND, DEPOSITION, SHALLOW WATER, MIXING, ACCUMULATION, LAMINAR FLOW, RADIOGRAPHY, SEDIMENTS, OCEAN BOTTOM, RADIOCHEMISTRY, BAYS, SILT, BEDDING.

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE