Nepal, April 2015: Magnitude 7.8 Main Shock and Magnitude 6.7 Aftershock

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We actually do still record the old-style “paper on a rotating drum” seismograms at Weston Observatory.

Note, however, how much higher-quality the modern digital recordings are (see below). This makes it possible to learn much, much more about the earthquakes than we used to be able to.

Nepal_042515_WWSSN

Weston_Drums

Nepal_042515_Main_After

USGS Tectonic Summary
2015-04-26 07:09:10 (UTC)
19km (12mi) SSE of Kodari, Nepal
Magnitude 6.7
27.782°N
85.997°E
depth=17.3 km (10.7 mi)

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