Seismic status of Delhi megacity

The seismic status of Delhi, in terms of past history, tectonic setting and soil conditions is reviewed from an engineering point of view. The influen ce of soft soil deposits in amplifying rock level motion at certain frequen cies, which may be detrimental to highrise buildings is highlighted. Seismi c microzonation of Delhi city will help engineers in identifying and streng thening structures vulnerable to future earthquakes.