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On Fri, 4/6/18, Clifford Budd cliffordbudd@yahoo.com [geology2] <geology2@yahoogroups.com> wrote:
Subject: Re: [Geology2] Earthquake that rattled L.A. was most powerful in years
To: "Kim Noyes kimnoyes@gmail.com [geology2]" <geology2@yahoogroups.com>
Date: Friday, April 6, 2018, 10:03 PM
it's just a matter of
time
cliff budd
PS. Great site
(B.S. geol. Univ. of Wisc. 1958; M.S. geol. LSU,
1960)
On Friday, April
06, 2018 01:51:59 PM
CDT, Kim Noyes kimnoyes@gmail.com [geology2]
<geology2@yahoogroups.com> wrote:
Earthquake that rattled
L.A. was most powerful in years
By
Rong-Gong Lin
II and
Joseph Serna
Apr 05, 2018
|
1:50 PM
The magnitude-5.3
earthquake that rattled Southern California on Thursday
was the strongest in the area several years.
Though there
were no
immediate reports of damage, the quake was felt across a
wide area and
was a blunt reminder that California is earthquake country.
The U.S.
Geological Survey put the epicenter about 23 miles off the
Channel
Islands, about 85 miles west of Los Angeles.
Earthquake
early-warning system gave heads-up before 5.3 magnitude
temblor hit L.A. area>>
It was centered near the Eastern
Santa Cruz Basin
Fault Zone, Caltech seismologist Egill Hauksson said.
"Earthquakes
happen out there now and again. There's a major offshore
fault system,"
he said.
Seismologist Lucy Jones said on
Twitter that the
fault system "moves Southern California around a bend
of the San Andreas
fault."
There is a slightly greater
likelihood that the
the temblor could trigger a larger earthquake, but that
chance decreases
with time, Hauksson said.
The last big earthquake in the Channel
Islands region
before Thursday's temblor was in 1981, which was a
magnitude 6.0,
Hauksson said. A magnitude 4.8 quake struck near the islands
in 2013.
The last quake to be felt this widely in
the L.A. area
was a magnitude 4.4 in Encino in 2014. That quake also shook
a wide area
and was the largest in the Los Angeles area in four years.
It was the
strongest to hit directly under the Santa Monica Mountains
in the 80
years.
Damage from the magnitude 6.8 earthquake that
struck Santa Barbara in 1925. (Los Angeles
Times)
The Santa Barbara
area is home to a number of
earthquake faults, the largest of which is the Santa Ynez
fault, which
is 80 miles long and runs just north of the city. That fault
is believed
to be capable of triggering an earthquake as powerful as
7.5.
The great Santa Barbara quake of
1925, recorded
as a magnitude 6.8, destroyed a significant portion of the
city's
downtown area, damaged rail lines and caused extensive
landslides on
bluffs. It killed 13 people and was felt as far away as
Orange County.
Since the Easter Sunday earthquake of 2010
that hit
along the California-Mexico border, there have been 14
earthquakes of
magnitude 5 or greater in Southern California. Hauksson
estimated that
perhaps about half of them were felt in Los Angeles.
Get
ready for a major quake. What to do before — and during
— a big one>>
UPDATES:
1:50 p.m.: This article
was updated throughout with additional details and
background.
1:25 p.m.: This article
was updated with information on the magnitude 6.0 quake that
struck the Channel Islands in 1981.
This article was originally posted at
12:55 p.m.Source: http://www.latimes.com/local/lanow/la-me-la-quake-explainer-20180405-story.html
--
Kim Noyes
about.me/kim.noyes
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ucere unor boieri autohtoni Din 1816 functia de guvernator civil este
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Posted by: Ingrid Shearer <sheareringrid@yahoo.com>
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