GeologyRocksIs there anybody out there?
- Login to post a new forum topic.
Jon
Rank:
Roles:
Contact:
I got 17.25 degrees (inverse
Wed, 07/18/2012 - 12:50I got 17.25 degrees (inverse sin of 6/13*sin(50))
I estimated the p-wave velocity at the base of the mantle to be 13km/s and the p-wave velocity at the top of the core to be 6 km/s.
I think this is reasonable as the angle should be less due to the speed difference (i.e. refract towards the normal)
Rank:
Contact:
Is there anybody out there?
Submitted by Kajsa1990 on Tue, 07/17/2012 - 19:14.Hi,
I've been given this question by my teacher;
Use Snell's law to calculate the angle of refraction of a P wave at the core-mantle boundary given that its angle of incidence is 50 degrees.
Snell's law: VP[core].sin(αi) = VP[mantle].sin(αr)
αi = angle of incidence
αr = angle of refractgion
I did it my self and got αr=3.6
However, I'm not too sure that it's the right answer. I've been playing with these numbers all evening so if anyone could help me I would be very thankful. Cheers