Accession Number : AD0777911

Title :   Bed Form Development and Distribution Pattern, Parker and Essex Estuaries, Massachusetts.

Descriptive Note : Miscellaneous paper,

Corporate Author : MASSACHUSETTS UNIV AMHERST COASTAL RESEARCH CENTER

Personal Author(s) : Boothroyd,Jon C. ; Hubbard,Dennis K.

Report Date : FEB 1974

Pagination or Media Count : 47

Abstract : Velocity, depth, temperature, grain size, and bed form scale and orientation were measured for complete tidal cycles at 50 stations in two New England estuaries. Scuba observation of bed form change and migration, fathometer profiles, and 700 bed form scale and orientation readings were also carried out. This investigation led to the recognition of a sequence of bed forms based on increasing 'flow strength'. Bed form type is governed by maximum flood and ebb velocities attained at a given locality. Velocity asymmetry and duration are important in determining bed form morphology and amount of crossbedding bimodality. Froude number shows good correlation with bed form type only in depths less than 2 meters. (Modified author abstract)

Descriptors :   *Estuaries, *Sediments, *Geomorphology, Sediment transport, Ocean currents, Tides

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE