Tsunami source inversion using genetic algorithm

Download

index.pdf

Date

2011

Author

Şen, Caner

Metadata

Show full item record

Item Usage Stats

138
views

50
downloads

Tsunami forecasting methodology developed by the United States National Oceanic and Atmospheric Administration’s Center for Tsunami Research is based on the concept of a pre-computed tsunami database which includes tsunami model results from Mw 7.5 earthquakes called tsunami source functions. Tsunami source functions are placed along the subduction zones of the oceans of the world in several rows. Linearity of tsunami propagation in an open ocean allows scaling and/or combination of the pre-computed tsunami source functions. An offshore scenario is obtained through inverting scaled and/or combined tsunami source functions against Deep-ocean Assessment and Reporting of Tsunami (DART) buoy measurements. A graphical user interface called Genetic Algorithm for INversion (GAIN) was developed in MATLAB using general optimization toolbox to perform an inversion. The 15 November 2006 Kuril and 27 February 2010 Chile tsunamis are chosen as case studies. One and/or several DART buoy measurement(s) is/are used to test different error minimization functions with/without earthquake magnitude as constraint. The inversion results are discussed comparing the forecasting model results with the tide gage measurements.

Subject Keywords

Tsunamis.

URI

http://etd.lib.metu.edu.tr/upload/12612939/index.pdf
https://hdl.handle.net/11511/20436

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Transoceanic propagation of Sumatra tsunamis and their effects on Maldives Islands Koyuncu, Hakan; Yalçıner, Ahmet Cevdet; Department of Civil Engineering (2010) In recent years the negative effects of tsunamis in the Indian Ocean dramatically increased. Although, this subject became very popular lately, the far-field activities of tsunamis are needed to be evaluated in Indian Ocean. In this thesis, Maldives and Sumatra islands were emphasized to analyze the effects of the transoceanic propagation of tsunamis in Indian Ocean. At first, using GIS Based softwares, the geographical data of the region were extracted and organized for analyzing. Secondly, a worst earthqu...
Tsunami Hazard Assessment on the Egyptian Coast of the Mediterranean Zaytsev, A. I.; Babeyko, A. Yu.; Kurkin, A. A.; Yalçıner, Ahmet Cevdet; Pelinovsky, E. N. (Pleiades Publishing Ltd, 2019-09-01) Tsunami forecast possibilities for areas with a small base of historical tsunamis have been discussed using the Probabilistic Tsunami Hazard Assessment (PTHA) method, which is based on a statistical analysis of a sufficiently large number of real and predictive earthquakes with a subsequent calculation of possible tsunami waves. This method has been used for a long-term tsunami hazard assessment on the Mediterranean coast of Egypt. The predicted wave heights have been shown to vary along the coastline due t...
Earthquake generation cycles and tsunami simulations providing possible scenarios for Turkey Marmara sea and Japan Nankai trough and Japan trench Horı, Takane; Yalçıner, Ahmet Cevdet; Meral Özel, Nurcan; Kılıç, İrfan; Miyazaki, Shinichi; Hyodo, Mamoru (null; 2015-04-12) In order to obtain comprehensive earthquake and tsunami scenarios for disaster assessment, numerical simulations of earthquake generation cycles and resultant tsunami generations have been performed in Japan. The occurrence of the 2011 Tohoku earthquake has realized us the necessity to consider all the possible scenarios without preconceptions. We have performed large-scale numerical simulations using Earth Simulator and K-computer for earthquake generation cycles along the Nankai trough, southwest Japan, w...
Tsunami analysis for southern Aegean Sea Onat, Yaprak; Yalçıner, Ahmet Cevdet (2012-09-17) There are different types of tsunami sources in Southern Aegean Sea. Wider awareness, proper preparedness and effective mitigation strategies against tsunamis need better understanding of tsunamis. Tsunami assessment study covers the exchange and enhancement of available earthquake and tsunami data, development of bathymetric and topographic data in sufficient resolution, selection of possible or credible tsunami scenarios, selection and application of the valid and verified numerical tools for tsunami gene...
The 2002 Denali fault and 2001 Kunlun fault earthquakes: Complex rupture processes of two large strike-slip events Özacar, Atilla Arda (Seismological Society of America (SSA), 2004-12-01) We studied the source processes of two large continental earthquakes, the 3 November 2002 Denali fault earthquake and the 14 November 2001 Kunlun fault earthquake, associated with strike-slip faulting along ancient sutures. We inverted teleseismic P waveforms using a pulse-stripping method for multiple time windows with different focal mechanisms and derived composite source models. According to our results, the 2002 Denali fault earthquake began with initial thrusting (M-W 7.3) along a 40-km-long segment o...

Citation Formats

C. Şen, “Tsunami source inversion using genetic algorithm,” M.S. - Master of Science, Middle East Technical University, 2011.