Deterministic Seismic Hazard Analysis for Greater Mumbai, India

Abstract

Mumbai city, the financial capital of India is situated on west coast of intra-plate continental region of Peninsular India (PI), which experienced significant historical earthquakes in recent past. Seismic hazard analysis for safe and economic design of structures is important for Mumbai for earthquake disaster study and mitigation. Hence, in the present study, deterministic seismic hazard analysis (DSHA) for Greater Mumbai region (Lat. 18.875 0 N to 19.325 0 N and Long. 72.825 0 E to 73.125 0 E with grid spacing 0.05 0 ) which includes Mumbai city, Suburban, Thane District and Navi Mumbai is carried out by using seismicity database of earthquake magnitude M w ≥ 3.5 since AD 1594 to 2012. The seismic sources are identified from Seismotectonic Atlas of India within the control region of 300 km radius around Mumbai city (Lat. 18.94 0 N, Long. 72.84 0 E). The epistemic uncertainty involved in estimation of different input parameters is accounted within logic tree framework. Final results in terms of spatial variation of 50 th and 84 th percentile (MCE and SSE) rock level peak horizontal acceleration (PHA) and spectral accelerations (S a ) at short and long periods show high seismic hazards on the southern part of the study region, which can be used for seismic design of structures in Greater Mumbai region.

Seismic hazard assessment of the Shillong Plateau, India

“…Several studied on DSHAs were performed across India. For example, Desai and Choudhury (2014) assessed seismic hazards for Greater Mumbai, Kumar et al (2013) for the Lucknow city, and Parvez et al (2003) for the entire country and the adjoining areas. Here, we use the scenario-based seismic hazard assessment for the SP.…”

Application of chitosan and its derivatives in Cu(II) ion removal from water used in textile wet processing

“…A strong absorption peak at 1025 cm –1 was due to the primary hydroxyl group, a characteristic peak of -CH 2 OH in primary alcohols, arising from C-H stretching. 25,26 The structural changes in chitosan arose due to complex formation with copper ions that were observed in the spectrum, as shown in Figure 3. The broadening of the peak at 3355 cm –1 and progressive reduction of the peak at the wave number at 1025 cm –1 indicated the involvements of amino and hydroxyl groups in the scavenging of the Cu(II) ions.…”

Deterministic, Probabilistic, and Data-enhanced Models of Seismic Hazard Assessments with some Applications to Central Asian Regions

“…In this section, we overview the DSHA for the SP performed by Baro et al (2018). Although many studies utilizing the DSHA approach were conducted across the country, including Desai and Choudhury (2014) for Greater Mumbai, Kumar et al (2013) for the Lucknow city, and Parvez et al (2003) and Parvez et al (2017) for the entire country and the surrounding areas, the work by Baro et al (2018) was the first one dedicated specifically to the SP, an earthquake-prone region. In this seismic hazard analysis, Baro et al (2018) utilized 72 earthquake sources (active faults) present within 500 km around the SP and estimated the maximum possible earthquake magnitude at each of these faults.…”