tag:blogger.com,1999:blog-9188642669907788257.post7665822545400749563..comments2024-03-20T14:47:34.192-07:00Comments on Reading the Washington Landscape: Earthquake and Tsunami in Japan - Early ThoughtsDan McShanehttp://www.blogger.com/profile/17044037213245602667noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-9188642669907788257.post-89700494295032953622011-03-14T14:09:30.747-07:002011-03-14T14:09:30.747-07:00I looked up Sanriku earthquakes on Wikipedia and f...I looked up Sanriku earthquakes on Wikipedia and found that there have been 3 major earthquakes in that area 1 in 869, 1 between 1000 and 500 bc and one between 500 bc and 1 bc. Adding these together suggests a recurrence interval of about 1100 years. The article suggested that seismologists had put a 99% probability of an 8.3 in the 30 years following 2007. So although the quake was bigger, it was essentially forecasted. The fact that tsunamis hit Sendai in 869 and earlier (the earlier ones detected the way the cascadia ones are by tsunami deposits) suggests that since the plants were built a lot of new knowledge has been generated, and that plants built today would be built differently.Lylenoreply@blogger.comtag:blogger.com,1999:blog-9188642669907788257.post-60681984398150958472011-03-14T13:16:22.927-07:002011-03-14T13:16:22.927-07:00This video of a park in Chiba City during an after...This video of a park in Chiba City during an aftershock made me wonder about the reclaimed portions of Seattle. Are they vulnerable to this same phenomenon?<br /><br />http://www.youtube.com/watch?v=qkHxDZGSM7E&feature=player_embeddedKathttps://www.blogger.com/profile/18207121540248325766noreply@blogger.com