Earthquake Definition and 171 Threads

  1. S

    Before the ’04 Tsunami, an Earthquake So Violent It Even Shook Gravity

    http://www.nytimes.com/2006/08/08/science/08find.html?ex=1312689600&en=86a5d1a41980f607&ei=5090&partner=rssuserland&emc=rss" How is it possible to have a drop in gravity when a Earth quake happens?
  2. Astronuc

    Was Hawaii Under Tsunami Warning During Tonga-Fiji Earthquake?

    Tonga - Fiji Region - http://news.yahoo.com/s/ap/tonga_earthquake Tsuanmi Alert. http://www.everything-science.com/component/option,com_smf/Itemid,82/topic,5244.msg59601#msg59601
  3. H

    Earthquakes and second one dam prevent earthquake

    This worls is divided into two groups(not obviously boys and girls:biggrin: ),,first one who believe dams cause earthquakes and second one dam prevent earthquake.. you are in which one and what's your reasoning..
  4. P

    Pakistan Earthquake: UN Warns of "Second Wave of Death" Without Aid

    This can use some more visibility. Our press seems more interested in Wilma, which is weakening, than in the earthquake, whose death toll continues to mount. The toll has jumped from 54,000 to 79,000 this week aone, and may double if we don't get more aid to the region...
  5. C

    Earthquake Aftermath: Tsunami Effects

    http://news.bbc.co.uk/1/hi/world/south_asia/4323008.stm Is this an after effect of the tsunami earthquake?
  6. C

    7.6 magnitude earthquake early this morning in Pakistan

    There was a 7.6 magnitude earthquake early this morning in Pakistan. I was getting ready to sleep, around 9 am, when it hit Lahore...See, we were sleeping in the common room which has AC (our individual rooms don't have AC)...It was me, my roomie, and 3 other people sleeping there. We were...
  7. Astronuc

    Hundreds Dead in Powerful Asian Earthquake

    By CHRISTOPHER TORCHIA, Associated Press Writer http://news.yahoo.com/s/ap/20051008/ap_on_re_as/pakistan_quake We have a number of members in Pakistan and India. I hope all are OK. http://en.wikipedia.org/wiki/2005_Indian_subcontinent_earthquake
  8. Ivan Seeking

    Real-time Earthquake Risk for California

    Updated hourly. http://pasadena.wr.usgs.gov/step/
  9. russ_watters

    New 8.2+ Earthquake off Sumatra

    Breaking story: http://www.usatoday.com/news/world/2005-03-28-indonesia-quake_x.htm 1609 UTC, measured at 8.2 by USGS and 8.5 by the Japanese equivalent, just north of the December '04 quake. Tsunami warning issued, no word on if a tsunami actually materialized...
  10. S

    Stone Houses in Earthquake Areas

    I heard that it is bad to build a house made of stone on an area that is known for Earthquakes. Is that true? Are stones houses the worst against Earthquakes? That is what I heard, but I somewhat disagree with it. Why would houses made of stone be bad for a house? It is heavy and cannot sway...
  11. K

    The internsity of a particular earthquake wave

    :confused: The internsity of a particular earthquake wave is measured to be 2.2 * 10^6 W/m^2 at a distance of 100km from the source. Now here is the part that I'm lost. What was the intensity when it passed a point only 4.0km from the source? And what was the total power passing through an area...
  12. P

    Steel & Earthquakes: Low Carbon Steel for Quake Resistance

    Do you want low carbon steel to withstand earthquakes? Low carbon means more ductile, right? Am I right?
  13. E

    Could the Earthquake have caused this?

    Earthquake tsunami in India. Could a Earthquake of this size have caused a mountain to be thrust up in a different region of the world and cause this accident? http://www.spacedaily.com/news/submarine-05a.html
  14. M

    Tsunami caused by the earthquake.

    I was reading in the newspaper and saw that it said that there was first an initial tidal wave, then the water receded for 10 minutes, then the big wave came crashing ashore. I was just trying to think on why the water would recede for so long, being 10 minutes. When the earthquake takes place...
  15. check

    Jefferys – Bullen Table and other earthquake knickknacks

    I was wondering what is the equation that gives the values in a Jefferys – Bullen Table? Specifically, what’s the equation for finding the distance (or angle) from a seismic station to the epicentre of an earthquake using the difference in travel times between S and P waves as recorded by the...
  16. R

    Earthquake Prediction for 2004,for the World

    Dear Sirs, I send you the next earthquake prediction for the World for 2004. Japan: 15th of September,8th of October,10th and 19th and 21th and 25th of November(maybe earthquake storm),7th and 19th of December Mongolia:28th of September Algeria:7th-8th of September,28th of...
  17. Monique

    Iran Earthquake: 20,000 Killed, 2000 yr Old Citadel Destroyed

    I can't believe the news everytime I hear these things.. they say 20,000 were killed in the Bam Earthquake.. and a major Iranian cultural heritage was destoyed at the same time (2000 yr old citadel).
  18. Ivan Seeking

    Tokyo earthquake predicted by astronomer?

    I am posting this only to bring to your attention what is likely a coincidence, but possibly interesting. https://www.physicsforums.com/showthread.php?s=&threadid=6004
  19. Ivan Seeking

    Astronomer Predicts Major Earthquake for Japan

    This will either debunk itself in a week, or we move this prediction to another forum. http://www.space.com/scienceastronomy/quake_prediction_030915.html Edit: A summary of this thread: A quake with a magnitude >= 7.0 was predicted for Tokyo for Tuesday or Wednesday. In fact...
  20. Saint

    Are natural disasters signs of Jesus' second coming?

    When earthquake happened, some christians are very happy about it, they think this is a Good Sign that Jesus' second coming is impending! Do you agree with this type of phycho ? Do you think they are cold-blooded? I don't think they go to the disaster area to offer humanitarian help to...
  21. D

    Earthquake bridges and towers (new)

    Bridge to 7 km and towers to 3.5 km. (plus other lightweight designs) at: http://groups.msn.com/DavesBridgesandTowers My last thread was just starting to get interesting when the new forum took over! For anyone who missed the final messages, I have recently added more drawings to the site...
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