Title :
Velocity, concentration and flux of sediments in a coastal bottom boundary layer with a laser Doppler velocimeter
Author :
Agrawal, Y. ; Trowbridge, J.H. ; Pottsmith, H.C. ; Oltman-Shay, J.
Author_Institution :
Northwest Res. Associates Inc., Bellevue, WA, USA
Abstract :
A backscatter fiber-optic laser Doppler velocimeter (LDV) mounted on a profiler was used to obtain velocity measurement in a coastal bottom boundary layer. The rate of velocity realization from the LDV has been used to obtain profiles of sediment concentration and flux. The instrumentation and the method for extraction of concentration and flux profile information are described. Analysis of results of interest to hydrodynamics is deferred to a later paper
Keywords :
fibre optic sensors; geophysical equipment; geophysical techniques; measurement by laser beam; oceanographic equipment; oceanographic techniques; sedimentation; backscatter fiber optic instrument; coastal bottom boundary layer; concentration; flux; instrumentation; laser Doppler velocimeter; marine geology; measurement technique; ocean sea; sediment fall velocity; sedimentation; turbidity; Acoustic measurements; Gravity; Instruments; Laboratories; Oceans; Optical scattering; Sea floor; Sea measurements; Sediments; Statistics;
Conference_Titel :
OCEANS '93. Engineering in Harmony with Ocean. Proceedings
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-1385-2
DOI :
10.1109/OCEANS.1993.326174
