An overview on the seismic microzonation and site effect studies in Central Asia

Annals of Geophysics

Bolot Moldobekov¹  Sheyshenaly Usupaev¹  Sagynbek Orunbaev¹  Tobias Boxberger²  Stefano Parolai²  Dino Bindi²  Marco Pilz²  Shahid Ullah²  Pulat Yasunov³  Kanatbek Abdrakhmatov⁴  Natalya Silacheva⁵  Tanatkan Abakanov⁵ 

[1] Central Asian Institute for Applied Geosciences, Bishkek,;Helmholtz Center Potsdam - German Research Center for Geosciences, Potsdam,;Institute of Geology, Earthquake Engineering and Seismology, Academy of Sciences of the Republic of Tajikistan, Dushanbe,;Institute of Seismology, Academy of Sciences of the Kyrgyz Republic, Bishkek,;Institute of Seismology, Academy of Sciences of the Republic of Kazakhstan, Almaty,;

关键词: Site effects;    Seismic noise;    Earthquake;    Microzonation;   

DOI  :  10.4401/ag-6662

来源: DOAJ

【 摘 要 】

During the past centuries, many cities in Central Asia have suffered significant damages caused by earthquakes. A crucial step towards preparedness for future events, the definition of the optimal engineering designs for civil structures and the mitigation of earthquake risks involves the accomplishment of site response studies. To accurately identify local variations of the site response at different locations within the cities, earthquakes recorded by seismic networks as well as measurements of the seismic noise can be used for estimating the resonance frequencies and for evaluating the expected level of ground motion at each site. Additionally, the measurements can help identifying site specific features like more-dimensional resonances and directional effects. This information can be complemented with array measurements of ambient seismic noise in order to estimate local shear-wave velocity profiles, an essential parameter for evaluating the dynamic properties of soil, and to characterize the corresponding sediment layers at each site. The present study gives an overview on the progressive development of the seismic zonation studies in the frame of EMCA carried out in several cities in Central Asia.

【 授权许可】

Unknown