Welcome to City-Data.com Forum!
U.S. CitiesCity-Data Forum Index
Go Back   City-Data Forum > General Forums > Nature
 [Register]
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
View detailed profile (Advanced) or search
site with Google Custom Search

Search Forums  (Advanced)
Reply Start New Thread
 
Old 04-19-2014, 02:51 PM
 
58 posts, read 76,095 times
Reputation: 141

Advertisements

To quote the largest study of some 27,000 seismic events in 2004 by Elizabeth Cochran on earth tides and shallow thrust earthquakes that found, and I quote..

"We show a correlation between the occurrence of shallow thrust earthquakes and the occurrence of the strongest tides. The rate of earthquakes varies from the background rate by a factor of 3 with the tidal stress. The highest correlation is found when we assume a coefficient of friction of μ = 0.4 for the crust, although we see good correlation for μ between 0.2 and 0.6. Our results quantify the effect of applied stress on earthquake triggering, a key factor in understanding earthquake nucleation and cascades whereby one earthquake triggers others."

Another quote from the study is "We focused on a subset of shallow thrust earthquakes with depths of 0 to 40 km because these earthquakes are in regions with the largest tidal stresses."

This study was twice as large as 13,042 events Vidale and Agnew used in 1998 that found a 2% increase in earthquake frequency when tidal stress promotes failure along normal faults.

But neither of these studies were conducted around or during a rare celestial alignment.

How ever thirteen of the past fifteen earthquakes over 6.0 the past month have been of the shallow variety, 0-40 mile depth.

Last edited by Astro Art; 04-19-2014 at 03:05 PM..
Reply With Quote Quick reply to this message

 
Old 04-19-2014, 05:40 PM
bjh
 
59,952 posts, read 30,275,344 times
Reputation: 135668
Quote:
Originally Posted by Zot View Post
Hmm for some reason a Creedence Clearwater song (Bad Moon Rising) comes to mind. Amazing hour our failing neurons make flawed connections with unrelated things. Maybe Bad Moon Rising is the source of concern, the lyrics are a bit apocalyptic.



Creedence Clearwater Revival - Bad Moon Rising Lyrics | MetroLyrics

I thought that was, "There's a bathroom on the right."

There's a bathroom on the right misheard lyric by Creedence Clearwater Revival, Bad Moon Rising
Reply With Quote Quick reply to this message
Reply
Please update this thread with any new information or opinions. This open thread is still read by thousands of people, so we encourage all additional points of view.

Quick Reply
Message:

Over $104,000 in prizes was already given out to active posters on our forum and additional giveaways are planned!

Go Back   City-Data Forum > General Forums > Nature

All times are GMT -6. The time now is 08:30 AM.

© 2005-2024, Advameg, Inc. · Please obey Forum Rules · Terms of Use and Privacy Policy · Bug Bounty

City-Data.com - Contact Us - Archive 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37 - Top