home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!spool.mu.edu!agate!ames!sun-barr!news2me.EBay.Sun.COM!jethro.Corp.Sun.COM!licancabur!barroux
- From: barroux@licancabur.Corp.Sun.COM (Juan Carlos Barroux - Technical Consultant - Latin America)
- Newsgroups: ca.earthquakes
- Subject: Re: types of earthquake predictions
- Date: 24 Dec 1992 01:53:17 GMT
- Organization: Sun Microsystems, Inc.
- Lines: 33
- Distribution: world
- Message-ID: <1hb56dINN7h@jethro.Corp.Sun.COM>
- References: <51678@seismo.CSS.GOV>
- Reply-To: barroux@licancabur.Corp.Sun.COM
- NNTP-Posting-Host: licancabur.corp.sun.com
-
- In article 51678@seismo.CSS.GOV, stead@skadi.CSS.GOV (Richard Stead) writes:
- >
- >The 1960 Chile quake had Mw=9.6 (Mw is an open-ended magnitude scale,
- >Richter magnitude saturates at about 8.5 and cannot get larger). It
- >is the biggest quake during instrumental seismology. But there is evidence
- >it may well be the largest quake in several centuries. It broke a fault
- >area 800 km long and 200 km wide, and the sides slipped about 20 meters.
- >Hard to beat that for size. It was so big it made the earth wobble measurably,
- >and the rang like a bell for weeks.
- >--
- >Richard Stead
-
- Since I am Chilean I have heard a lot of stories about that quake. My
- mother and my father in law actually worked in the relief effort in the
- area just a few days after the quake. One of the main problems was that
- a principal river was completely cut-off by a hill which decided to
- landslide on top of it, creating a huge dam. Obviously, there was a
- mayor city on the path of the river, so the dam had to be destroyed
- quickly. Most of the earthmoving equipment of the country was used to
- that purpose.
-
- I just went back from a trip to Chile and some friends told me that
- they are expecting another earthquake on the same fault as the 1960
- one. They told me that only the lower portion of the fault did fracture
- and not the upper part. They also are worried about a quake in the
- north part of the country, near the frontier with Peru.
-
- Is this true?
-
- Speaking for himself,
-
- Juan Carlos
-
-