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| Reference : Calcul de l’aléa sismique pour une région dans le Tien-Shan Central, étude in situ et ... |
| Dissertations and theses : Master's dissertation | |||
| Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography | |||
| http://hdl.handle.net/2268/134747 | |||
| Calcul de l’aléa sismique pour une région dans le Tien-Shan Central, étude in situ et modélisation numérique dynamique de la réponse sismique de sites de bassin de retenue. | |
| French | |
Lamair, Laura  [Université de Liège - ULg > > > Form. doct. sc. (géologie - Bologne)] | |
| 7-Sep-2012 | |
| Université de Liège, Liège, Belgique | |
| Master en sciences géologiques, à finalité approfondie | |
| 158 | |
| Havenith, Hans-Balder | |
| Hubert, Aurelia | |
| Camelbeeck, Thierry | |
| [fr] évaluation de l’aléa sismique ; accélérations horizontales au rocher ; mesure H/V ; effet de site ; modélisation dynamique ; bassin de retenue | |
| [en] Kirghizistan ; Tien Shan | |
| [en] Kyrgyzstan is situated in the heart of the Tien Shan. During the last two centuries,
several M>7 earthquakes occurred in this country. Therefore, a good knowledge of seismic hazard in this area is essential, not only at regional scale but also at local scale. First, this work presents a detailed analysis of seismic hazard in the Central Tien Shan. Several seismic hazard map have been made but none of them include paleoseismic data. Our maps are based on previous studies of probabilistic seismic hazard of the Kyrgyz Tien Shan (Abdrakhmatov et al., 2003). We integrate in our calculation the palaeoseismicity of the Talas Fergana Fault. It allows us to take into consideration strong earthquakes with high return periods. The final results are presented as maps with different return periods (100, 200, 475, 1000, 2000, 5000 and 10000 years). The outcomes are discussed in comparison with previous results, with GSHAP predictions (Ulomov et al., 1999) and with probabilistic seismic hazard map (Abdrakhmatov et al., 2003). The purpose of the second part of this study is the assessment of local seismic hazard of Tuyuk-Suu and Taldy-Bulak "D" tailings, both located in the Minkush valley. First, seismic wave amplifications are determined by means of spectral ratios of the horizontalto- vertical (H/V) components acquired through ambient noise measurements. Secondly, a dynamic modeling of the two tailings is performed. It is based on peak ground acceleration calculated previously for a return period of 1000 years. The dynamic modeling gives Fourier spectra for several histories. Spectral ratios obtained from dynamic modeling are compared with H/V measurement in order to estimate site effects. | |
| http://hdl.handle.net/2268/134747 |
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