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- Path: sparky!uunet!europa.asd.contel.com!darwin.sura.net!seismo!skadi!stead
- From: stead@skadi.CSS.GOV (Richard Stead)
- Newsgroups: ca.earthquakes
- Subject: Re: types of earthquake predictions
- Message-ID: <51681@seismo.CSS.GOV>
- Date: 21 Dec 92 21:04:37 GMT
- References: <1992Dec21.165317.5851@nosc.mil>
- Sender: usenet@seismo.CSS.GOV
- Lines: 31
- Nntp-Posting-Host: skadi.css.gov
-
- In article <1992Dec21.165317.5851@nosc.mil>, barrus@cod.nosc.mil writes:
- >
- > In article <51678@seismo.CSS.GOV> usenet@seismo.CSS.GOV writes:
- > >The 1960 Chile quake had Mw=9.6 (Mw is an open-ended magnitude scale,
- > Wasn't the Alaskan Earthquake around a 9 as well?
-
- Yes, it was a 9.4, the second largest quake in instrumental seismology.
- Now that I look them up, however, I can't find the paper that labelled
- 1960 Chile as 9.6 and 1964 Alaska as 9.4. I can find Hiroo Kanamoris'
- paper where he measured several Mw, and found 9.5 for Chile and 9.2 for
- Alaska. Other big quakes:
- 1906 Ecuador 8.8
- 1922 Chile 8.5
- 1923 Kamchatka 8.5
- 1938 Banda Sea 8.5
- 1950 Assam 8.6
- 1952 Kamchatka 9.0
- 1957 Aleutians 9.1
- 1963 Kuriles 8.5
- 1965 Aleutians 8.7
-
- Note that these are all associated with subduction (Assam is really
- continental collision, but that's related to subduction), and are located
- at the world's deepest and most active subduction zones.
-
-
- --
- Richard Stead
- Center for Seismic Studies
- Arlington, VA
- stead@seismo.css.gov
-