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The Indian subcontinent has a history of devastating earthquakes. [1] The major reason for the high frequency and intensity of the earthquakes is that the Indian plate is driving into Asia at a rate of approximately 47 mm/year. [2] Geographical statistics of India show that almost 58% of the land is vulnerable to earthquakes.
Earthquake epicenters 1963–98. In seismology, a seismic zone or seismic belt is an area of seismicity potentially sharing a common cause. It can be referred to as an earthquake belt as well. It may also be a region on a map for which a common areal rate of seismicity is assumed for the purpose of calculating probabilistic ground motions.
The Assam earthquake of 1950 registered a magnitude of 8.6; it is one of the most powerful earthquakes to have ever been recorded. [9] A similar earthquake in a densely populated area today would kill hundreds of thousands if not millions. This is why the Himalayan range is believed to be one of the most dangerous places to build large dams.
The National Centre for Seismology (NCS) is an office of India's Ministry of Earth Sciences. [1] The office monitors earthquakes and conducts seismological research. Specifically, it provides earthquake surveillance and hazard reports to governmental agencies. It consists of various divisions: Earthquake Monitoring & Services
Seismic analysis is a subset of structural analysis and is the calculation of the response of a building (or nonbuilding) structure to earthquakes. It is part of the process of structural design, earthquake engineering or structural assessment and retrofit (see structural engineering) in regions where earthquakes are prevalent.
The reason for the intensity and high frequency of earthquakes is the Indian plate driving into Asia at a rate of approximately 47 mm/year. [1] The following is a list of major earthquakes which have occurred in India , including those with epicentres outside India that caused significant damage or casualties in the country.
Where an earthquake is not recorded on seismographs an isoseismal map showing the intensities felt at different areas can be used to estimate the location and magnitude of the quake. [1] Such maps are also useful for estimating the shaking intensity, and thereby the likely level of damage, to be expected from a future earthquake of similar ...
Although there had been earthquakes to the west (near Delhi) in 1905, and to the east (Nepal–India earthquake) in 1934, there was a 600-kilometer-long region of the central Himalayan that had not ruptured since 1505. [6] In April 2015, the 7.8 M w April 2015 Nepal earthquake occurred near the center of this region.