Nepal quake: where and how tremors were felt

A high-intensity quake measuring 7.5 on the Richter scale on Saturday rocked many parts of East and North India, including Delhi, the epicentre of which was in Nepal.


Magnitude 7.8

Date time 2015-04-25 06:11:26.3 UTC

Location 28.28 N ; 84.79 E

Depth 10 km

Distances: 83 km NW of Kathmandu, Nepal / pop: 1,442,271 / local time: 11:56:26.3 2015-04-25

Distances: 75 km NE of Bharatpur, Nepal / pop: 107,157 / local time: 11:56:26.3 2015-04-25

A look at how the quake was felt at major cities in India and Nepal:

A visualisation of how the intensity varied with distance from epicentre:


Aftershocks :

Aftershocks are earthquakes that follow the largest shock of an earthquake sequence. They are smaller than the mainshock and within 1-2 rupture lengths distance from the mainshock.


The epicentre is the point on the earth's surface vertically above the hypocenter (or focus), point in the crust where a seismic rupture begins.


The hypocenter is the point within the earth where an earthquake rupture starts. The epicentre is the point directly above it at the surface of the Earth.

Richter scale:

The Richter magnitude scale is a mathematical device to compare the size of earthquakes. The magnitude of an earthquake is determined from the logarithm of the amplitude of waves recorded by seismographs.

Source: U.S. Geological Survey

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Printable version | May 5, 2022 4:48:47 am |