Please use this identifier to cite or link to this item:
Title: The slope of lake surfaces under variable wind stresses
Authors: New York University. School of Engineering and Science
United States. Army. Office of the Chief of Engineers
Haurwitz, Bernhard.
Keywords: Storm Surges
Hydrodynamic Equations
Lake Surfaces
Publisher: United States, Beach Erosion Board
Engineer Research and Development Center (U.S.)
From the introduction: The inclination of a wave surface caused by wind stress shows a distinct time lag in adjusting itself to changing winds. To analyze this phenomenon use is made of the hydrodynamic equations which are simplified by intergrating over the whole depth of the lake. It is found that the time required by the lake to respond to changing wind stress depends on the length of the seiche periods. This dependence of the rapditiy with which the lake level adjusts itself to the variable wind can be expected a priori. Particular attention is given to the case of a wind which changes its direction. Such a wind shift occurred during the passage of the hurricane of August 26-27, 1949, over the surface of Lake Okeechobee, Florida, when the wind turned through about 180 degrees during a time of roughly three hours. This turning of the wind was accompanied by a turning of the height contours of the lake surface, but the later rotated more slowly than the wind direction so that for some time the wind blew perpendicularn to the isohypses. It is shown that the theory explains this behavior of the lake surface.
Series/Report no.: Technical memorandum (United States. Beach Erosion Board) ; no. 25.
Description: Technical Memorandum
Rights: Approved for Public Release, Distribution is Unlimited
Appears in Collections:Technical Memorandum

Files in This Item:
File Description SizeFormat 
BEB-TM-25.pdf1.69 MBAdobe PDFThumbnail