In the present study, ground motions for Mw5.0, 5.5, and 6.0 scenario earthquakes are estimated at one hard rock site Delhi Jal Board (DJB) in Delhi using the empirical Green’s function technique. The recordings of the 7th September 2011 earthquake of Mw3.9 at the DJB site are used as an element earthquake. Our computations show that an Mw5.0 earthquake would give rise to peak ground acceleration (PGA) of ∼50 to 250 cm/s2, the smaller values occurring at hard sites. The corresponding estimated PGV range is ∼3 to 10 cm/s. Mw5.5 earthquake would give rise to PGA of ∼80 to 350 cm/s2, while during Mw6.0 PGA of ∼150 to 670 cm/s2 may occur at different sites. The estimated response spectra are compared with earlier studies in the same region by different researchers and it is found that the results are comparable. The obtained spectral acceleration values can be used in identifying the vulnerable areas in Delhi, thereby facilitating the planning, design, and construction of new structures and strengthening of the existing structures in the region.
All Science Journal Classification (ASJC) codes
- Environmental Science(all)
- Earth and Planetary Sciences(all)