Location

San Diego, California

Session Start Date

5-24-2010

Session End Date

5-29-2010

Abstract

The erosion features from tsunami wave and wind wave are different according to the characteristics of the two kinds of waves. The tsunami wave is a shallow water wave, even in Deep Ocean, with very long wavelength and relatively high especially near shore. It does not break when attacking the shore. It composed of run-up and run-down. The waves which can scour the offshore sea bottom and deposit the sediment mostly sand on the coast called storm or tsunami over washes. The erosion features from storm wave are caused by the breaking waves and wind-driven currents. However, the erosion features from tsunami wave are caused by both run-up and run-down. The scouring pit and trough by tsunami run-down usually are larger and deeper than those by tsunami run-up due to the stronger run-down which flow down slope and carrying debris. Examples of these features on Indian coasts are shown. Investigations of these features are important to the preventive measures for coastal erosion by these natural disasters. The characteristics of the flows of tsunami and wind wave cause the different erosion features and degree of erosion. The morphology of the coast modifies the intensity of the flow and the detail features along the coast. Examples of erosion features by strong wind and tsunami 2004 are shown on the Indian coasts.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Fifth Conference

Publisher

Missouri University of Science and Technology

Publication Date

5-24-2010

Document Version

Final Version

Rights

© 2010 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

Share

COinS
 
May 24th, 12:00 AM May 29th, 12:00 AM

Comparison of Erosional Features by Tsunami and Wind Waves

San Diego, California

The erosion features from tsunami wave and wind wave are different according to the characteristics of the two kinds of waves. The tsunami wave is a shallow water wave, even in Deep Ocean, with very long wavelength and relatively high especially near shore. It does not break when attacking the shore. It composed of run-up and run-down. The waves which can scour the offshore sea bottom and deposit the sediment mostly sand on the coast called storm or tsunami over washes. The erosion features from storm wave are caused by the breaking waves and wind-driven currents. However, the erosion features from tsunami wave are caused by both run-up and run-down. The scouring pit and trough by tsunami run-down usually are larger and deeper than those by tsunami run-up due to the stronger run-down which flow down slope and carrying debris. Examples of these features on Indian coasts are shown. Investigations of these features are important to the preventive measures for coastal erosion by these natural disasters. The characteristics of the flows of tsunami and wind wave cause the different erosion features and degree of erosion. The morphology of the coast modifies the intensity of the flow and the detail features along the coast. Examples of erosion features by strong wind and tsunami 2004 are shown on the Indian coasts.