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November 6th, 2011, 03:13 AM   #1
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I don't know how to google this question...

Everybody knows that scientists determine the epicenter of earthquake by computing on at least two waves generated by earthquake(s)

, one of my exercise question asked this

i ) Why earthquake epicenter that is underwater is harder to determine than on land ?

can someone give me answer(s) ? with a little simple explanation would do , its just high school level .


(Results i googled are messed up with every tiny info that i don't know)
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November 6th, 2011, 08:15 AM   #2
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Re: I don't know how to google this question...

I would think the problem would arise from the waves traveling unknown distances through two different media, and hence at differing speeds.
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November 6th, 2011, 02:26 PM   #3
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Re: I don't know how to google this question...

My answer sheet give this ,

In the middle of the sea , the seabed is far below since the depth is of the sea is big. Effects of refraction of wave is negligible.


*The first sentence , i wonder what is it trying to say , is it because it is far away? or is it because sea is big ?????

* 2nd sentence , no idea at all.
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