Effect of a Low Impermeable Groin on Shorezone Geometry and Texture, Point Mugu, California.

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Abstract:

The study analyzes the day-to-day effect of a low impermeable groin on the geometry and texture of the adjacent shorezone. Two 475-feet long profiles were established parallel with the experimental groin near Point Mugu, California, one profile upcoast, the other downcoast. Elevations and sediment samples were obtained daily at 25-feet intervals along these profiles over 128 days. Selected sediment samples were laboratory processed for textural parameters. Elevation, mean grain size, and sorting data were subjected to careful scrutiny and to various statistical techniques. The data were also correlated with energy variables, specifically wave and current parameters, measured over the observation period. During this time, the longshore current flowed upcoast for 90 days and downcoast for 38 days. Modified author abstract

Author(s):
Orme, Antony R.
Author Organization(s):
CALIFORNIA UNIV LOS ANGELES
Descriptive Note:
Final rept.,
Pagination:
0112

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
DACW72-73-C-0007
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*Beaches, *Sedimentation, *Geomorphology, California, Shores, Grain size, Spectrum analysis, Factor analysis, Ocean currents, Sediment transport
Field(s)/Group(s):
Geology, Geochemistry and Mineralogy, Civil Engineering
Keyword(s):
Point Mugu, Littoral drift, Groins(Structures)
Report Date:
1973 Nov 13