Accession Number : ADA310971

Title :   Geologic Effects on Behavior of Beach Fill and Shoreline Stability for Southeast Lake Michigan.

Descriptive Note : Final rept.,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS

Personal Author(s) : Parson, Larry E. ; Morang, Andrew ; Nairn, Robert B.

PDF Url : ADA310971

Report Date : JUN 1996

Pagination or Media Count : 107

Abstract : A monitoring program to evaluate the effects of beach nourishment material placed on a cohesive shoreline in southeast Lake Michigan was conducted at St. Joseph, MI, by the U.S. Army Engineer Waterways Experiment Station. In conjunction with this monitoring program, this particular study focuses on a 6-km (3.7-mile) section of shoreline extending southward from the jetties of St. Joseph Harbor. Some of the geological variables that affect cohesive shores were investigated. The primary objective of the study was to develop an improved understanding of the relationship between the movement of the cohesionless sediment (both fine and coarse grain components) and the irreversible downcutting of the underlying glacial till at the St. Joseph project site. Data collected during the monitoring program were input into a 2-D numerical model to describe the cross-shore sediment process and to predict the profile response to storm conditions with the influence of the underlying glacial till represented as an erosion-resistant sublayer. The 2-D profile change tests were performed at 10 of the profile locations.

Descriptors :   *COASTAL ENGINEERING, *BEACHES, *LAKE MICHIGAN, MATHEMATICAL MODELS, WATER FLOW, WATER WAVES, MONITORING, TWO DIMENSIONAL, SAND, OCEANOGRAPHIC DATA, SEDIMENT TRANSPORT, TIDAL CURRENTS, SHEAR STRESSES, GEOLOGICAL SURVEYS, AIR WATER INTERACTIONS, SEDIMENTS, HARBORS, BREAKWATERS, GEOTECHNICAL ENGINEERING, SHORES, EROSION RESISTANCE, GLACIAL GEOLOGY, MICHIGAN, COHESIVE SOILS, BEACH EROSION, WATER EROSION.

Subject Categories : Physical and Dynamic Oceanography
      Civil Engineering
      Geology, Geochemistry and Mineralogy
      Hydrology, Limnology and Potamology

Distribution Statement : APPROVED FOR PUBLIC RELEASE