Probabilistic Seismic Hazard Assessment of Existing Municipalities of Kavre Valley (Existing Banepa, Dhulikhel and Panauti)

Author(s)	Mr. Ramhari Shrestha, Mr. Amrendra Swarnakar
Country	Nepal
Abstract	A probabilistic seismic hazard assessment focusing on peak ground acceleration at the bedrock level for the existing municipalities of Kavre Valley, namely Banepa, Panauti, and Dhulikhel, has been conducted. A comprehensive catalogue of both historical and recent seismic events within a 350 km radius of Banepa, Panauti, and Dhulikhel has been assembled, and new seismotectonic and seismic distribution maps for the area have been created. The study proposes twenty-five areal sources. These sources were characterized and identified by plotting the refined catalogue on a map of Nepal. The data's completeness was verified. Subsequently, earthquake data keywords were statistically analyzed for all areal sources, and the seismicity around the city sites, along with the magnitude-frequency relationship, was assessed by defining the 'a' and 'b' parameters of the Gutenberg-Richter recurrence relationship for the respective areal sources. Finally, probabilistic hazard maps indicating a 10% and 2% probability of exceedance over 50 years were developed for the study area.
Keywords	Seismotectonic, Attenuation law, Hazard map, Uniform hazard spectra, Envelope function
Field	Engineering
Published In	Volume 7, Issue 5, September-October 2025
Published On	2025-10-12
DOI	https://doi.org/10.36948/ijfmr.2025.v07i05.56919

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