IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 6 - MARITIME HYDRAULICS AND COASTAL ENGINEERING : Solitary Impulse Wave Run-Up Characteristics
Solitary Impulse Wave Run-Up Characteristics
Author : Helge Fuchs and Willi H. Hager
Impulse waves are generated by landslides, rockfalls or avalanches impacting a reservoir or natural lake. The long waves generated by the impulse transferred to the water body in combination with the usually short propagation distance within a lake leads to a large damage potential due to wave run-up or dam overtopping. Fatal historic events occurred at Lituya Bay, Alaska, in 1958, or at the Vaiont Reservoir, Italy, in 1963. Recent events were observed at Lake Chehalis, Canada, or at the Nagatono Power Plant, Japan. Previous research at the Laboratory of Hydraulics, Hydrology and Glaciology (VAW) aimed at the generation phase of landslide-generated impulse waves with a special focus on the wave characteristics and the wave types. As a major result a computational guideline for impulse waves was published in 2008, which is an integral component of the short course on ?Landslide generated impulse th waves? held on September 8, 2013, within the frame of the 35 IAHR World Congress. Physical model experiments were conducted in an 11 m long, 0.50 m wide and 1 m deep wave channel. Testing involved a piston-type wave maker to generate solitary waves, three linearly inclined PVC shores with taná = 1\5.0, 1\2.5 and 1\1.5, a still water depth of h = 0.20 m, and relative wave heights H\h = 0.1 - 0.7. The maximum wave run-up heights, wave reflection coefficients and free surface profiles were evaluated from optical measurements.
File Size : 346,025 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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