Accession Number:

ADA073232

Title:

Estuarine Fluid Mud: Its Behavior and Accumulation.

Descriptive Note:

Final rept. 1 Nov 75-28 Feb 79,

Corporate Author:

VIRGINIA INST OF MARINE SCIENCE GLOUCESTER POINT

Report Date:

1979-04-01

Pagination or Media Count:

11.0

Abstract:

A study of fluid mud in Virginia estuaries was conducted to determine how the mud accumulates in a dynamic tidal flow regime. The mud occurs as lenses and blanket deposites in zones of fast sedimentation, i.e. on channel floors and in the turbidity maximum zone. Viscosity measurements indicate resuspension potential of the mud is greater in the turbidity maximum than elsewhere. Time-series measurements over a tidal cycle at 6 cm above the bed show that stress increased linearly with acceleration of mean current but lagged maximum current velocity during deceleration of tidal currents. Fluid mud-flow interactions are primarily responsible for accumulation of the mud. Author

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Soil Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE