A simulation of earthquake induced undrained pore pressure changes with bearing on some soil liquefaction observations following the 2001 Bhuj earthquake

Journal of Earth system science

Irene Sarkar1¹  Ramesh Chander2² 

[1] Department of Earth Sciences, Indian Institute of Technology, Roorkee 247 667, India$$;House no. 290, Sector 4, Mansa Devi Complex, Panchkula 134 109, India$$

关键词: Undrained poroelastic effect;    soil liquefaction;    Bhuj earthquake.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

The Bhuj earthquake of January 26th, 2001, induced wide spread liquefaction within the Kachch peninsula. It has been pointed out that inundation due to soil liquefaction was short lived in some parts than in others in the affected region. Several geological, seismological and hydrological factors would have cumulatively contributed to these observed changes.We simulate in this article, undrained or short-term change in pore pressure in a poroelastic half space, in response to a simplified model of the Bhuj earthquake source. We find that the regions of relatively shorter lived inundation due to soil liquefaction may fall in the region where pore pressure responsible for soil liquefaction attributable to strong ground shaking was counteracted by pore pressure changes due to undrained poroelastic effect and vice versa.

【 授权许可】

Unknown