How does shadow zone emerge?
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Posted by Drishti Singh 3 years, 11 months ago
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Gaurav Seth 3 years, 11 months ago
Where earthquake waves are not reported, such zones are called earthquake shadow zones.
It is observed that seismographs located beyond 103° from the epicenter do not record the earthquakes.
Seismographs located beyond 142° again record ‘p’ waves only.
The entire zone beyond 142° do not receive ‘s’ waves
The shadow zone of ‘s’ waves is much larger than the ‘p’ waves it is equal to 40% of the earth surface
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