Wave Characteristics of Tsunamis Generated by Landslides of Varying Size and Mobility
Loading...
Authors
Bullard, Gemma
Date
Type
thesis
Language
eng
Keyword
Landslide Generated Waves , Tsuanmi , Impulse Waves
Alternative Title
Abstract
Landslide generated tsunamis are a natural phenomenon, capable of causing catastrophic consequences at the site of impact as well as some kilometers away. In order to increase understanding of these hazards, a series of laboratory experiments were conducted in a large-scale flume investigate the wave characteristics in the near-field and far-field based on a variety of landslides.
The first objective is to examine the difference between the near-field maximum wave amplitude generated by highly mobile (water) and dry granular landslides. The results indicate that quantifying time and length scales are imperative in order to accurately estimate the maximum amplitude for highly mobile flows. The relationship between the time and length scales has a direct influence on the wave amplitude. The dry granular landslide decelerates much faster and therefore produce a smaller near-field maximum wave amplitude than those produced by highly mobile flows.
The second objective is to investigate the relationship between near-field wave shape of an impulse generated wave and the landslide properties. Quantifying the wave shape in terms of asymmetry allowed for the development of a novel framework, which provides a time-series for an impulse wave generated by a landslide with certain characteristics of thickness and velocity.
The third objective explores the near-field maximum wave amplitude generated by a higher mobility granular flow. The impulse waves generated in this study were in between the amplitude of the dry granular and highly mobile flows previously tested. This indicates that mobility can be quantified using the relationship between the time and length scales, and impulse waves generated by the highly mobile (water) flows is an accurate upper-bound of mobility.
Description
Citation
Publisher
License
Queen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada
ProQuest PhD and Master's Theses International Dissemination Agreement
Intellectual Property Guidelines at Queen's University
Copying and Preserving Your Thesis
This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.
ProQuest PhD and Master's Theses International Dissemination Agreement
Intellectual Property Guidelines at Queen's University
Copying and Preserving Your Thesis
This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.