What is it about?
The vulnerability potential of a site for an impending major earthquake striking a region. In simple terms, during a major earthquake the near surface soil behaves like a liquid and it can't support any civilian structures and they all sink in addition to damage by an earthquake shaking.
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Why is it important?
This natural hazard can happen in any part of the world with thick column of sand, silt and clay in near surface like Indo-Gangetic Alluvial Plains in Northern India, which supports huge population. So, assessment of soil liquefaction hazard potential of major cities, towns and major infrastructure parts of a country is of urgent need.
Perspectives
Hitherto, soil liquefaction potential is being assessed by several means including MASW studies. But they lack resolution both laterally and depth-wise. Our resistivity imaging based approach can meet these challenges in a cost-effective manner.
Rambhatla Sastry
Indian Institute of Technology Roorkee
Read the Original
This page is a summary of: Assessment of soil-liquefaction potential based on geoelectrical imaging: A case study, Geophysics, November 2017, Society of Exploration Geophysicists,
DOI: 10.1190/geo2017-0016.1.
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