Four earthquakes struck parts of India, Myanmar, and Tajikistan within just one hour on Sunday morning, raising concerns across central and South Asia. From Himalayan towns to Central Asian cities, the tremors caused residents to flee buildings in fear, reminding many of the region’s volatile tectonic landscape.
The first quake hit at 9 am in Mandi district of Himachal Pradesh, where a magnitude 3.4 tremor was recorded at a shallow depth of 5 km, according to the National Center for Seismology (NCS). The epicenter was located at 31.49°N, 76.94°E.
Earthquakes As Per Seismograph
Earthquakes are measured using a seismograph, which records the energy released during a seismic event. The magnitude indicates the size or strength of an earthquake and is commonly measured on the Richter scale or the more modern Moment Magnitude Scale (Mw).
Magnitude 3-4: Often felt, rarely causes damage
Magnitude 5-6: Moderate to strong, can cause damage to poorly built structures
Magnitude 6+: Strong to major earthquakes, potentially causing widespread destruction
The depth of the earthquake – how far below the Earth’s surface the quake originates – also plays a crucial role. Shallower quakes, like those felt today, tend to be more strongly felt on the surface, even if the magnitude isn’t very high.
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