Earthquake
in Sumatra
 |
Sumatra,
event of Dec-26--2004; 00:58:53 UTC
|
Local
time : 07:58:53
AM
Magnitude Mw: 9.0
Coordinates: 3.27° N, 95.82° E (NW of
Sumatra)
Depth: 30 Km
OTHERS
FACTS
- Epicenter in the south of the Burma microplate
|
-
The earthquake moved the rotation Earth axe in
5 cm
- A tsunami of ~ 7 m that reached the South Asian
coasts three hours later from the main event
- The earthquake left about 30000 death people
and the tsunami left about 20000
- Five million victims of the disaster. |
|
SeismoElectrical
Phenomena
|
Nikolai
Tarasov?
|
EGM:
The Earthquakes Generating Machine
In the film "The
Core" are shown the catatrophic consequences
associated to the diminishing of the angular speed
in the core of our planet. The rotation of the core
permits the existence of the magnetosphere, which
protects us of the radations heavier than the most
intense UV rays. In the film is also shown the "why"
in the diminishig of the speed in the rotation of
the core: an ultrasecret
army from the United States had developed an EGM
that provoked them through Electromagnetic pulses.
Thus they could quietly attack to any "enemy"
country (Afghanistan, North Korea, etc.). However,
the army overreacted and the shock waves went against
of nucleus, provoking its slowness.
|
|
Fiction?
WMD
Nowadays many scientist know how to create an earthquake
withan efficiency of 2/3 (3 trials cause an average
of seisms). Everything started in the 70's when a
group of soviet scientists made a geoelectric mapping
in the unstable zone of Takhijistan. The dipoles showed
lengths of several kilometres and the injected currents
were inmense. While the measures were made many seisms
followed, but nobody made the correlation with the
injection of current... upto 1993.
I) The SeismoElectrical
correlation is discovered
In 1993 the scientist Nikolai Tarasov of the Physics
Institute of the Earth in Moscow realised the correlation
that existed between the injection of current and
the beginning of a seism, which was "ilogical":
the energy carried by the current was one million
times lesser than the energy liberated by the seism.
This is the same argument that is used (or it was
used?) to make sure that the nuclear trials can't
cause earthquakes. But there was still one possibility:
May be the energy of the cuurent doesn't became an
earthquake, but it "triggers one". Amazed
by this hypothesis, Tarasov sought proofs to support
it or refute it and he got some information from another
geoelectric mapping made in 1980 in Tien Shan. Finally
he made statistic and and discovered that the injection
of intense current was able to trigger a seism in
2/3 of the times.
As it usually happens with the researches, Tarasov
didn't take a long time to be head hunted by the USA
and he is actually working in a group that makes researches
on EGM.
MORE...
|
|
|
05-19-2005:
Earthquake Forecasting System (Duncan Agnew, Nature)
The difficulty
of predicting individual earthquakes accurately often
obscures the progress made by seismologists studying
the probability of earthquake occurrence. A new approach
aims to keep the public in touch with what seismologists
know. To coincide with the launch of a new short-term
earthquake forecasting system for California, a new
website (pasadena.wr.usgs.gov/step)
gives a measure of the probability
of strong shaking anywhere in California within the
next 24 hours. The methodology combines an
earthquake occurrence model based on fault data and
historical earthquakes with a model of clustering.
The resulting forecasts will provide a better understanding
of the daily changes in earthquake hazard to the public,
media and emergency planners.
News and Views: Earthquakes:
Future shock in California
For California, probabilistic principles can be applied
to the short-term forecasting of further ground-shaking
following an earthquake. How such predictions will
be used by the public remains to be seen. | MORE
(spanish)
|
 |
* October 2005:
Valdivia Earthquake (Nature Magazine 437)
Authors: Marco Cisternas (UCV-Chile), Brian F. Atwater,
Fernando Torrejón, Yuki Sawai, Gonzalo Machuca,
Marcelo Lagos, Annaliese Eipert, Cristián Youlton,
Ignacio Salgado, Takanobu Kamataki, Masanobu Shishikura,
C. P. Rajendran, Javed K. Malik, Yan Rizal and Muhammad
Husni.
"It is commonly thought that
the longer the time since last earthquake, the larger
the next earthquake's slip will be. But this logical
predictor of earthquake size, unsuccessful for large
earthquakes on a strike-slip fault, fails also with
the giant 1960 Chile earthquake of magnitude 9.5. Although
the time since the preceding earthquake spanned 123
years, the estimated slip in 1960, which occurred on
a |
fault between
the Nazca and South American tectonic plates, equalled
350 years worth of the plate motion. Thus the average
interval between such giant earthquakes on this
fault should span several centuries. Here we present
evidence that such long intervals were indeed typical
of the last two millennia. We use buried soils and
sand layers as records of tectonic subsidence and
tsunami inundation at an estuary midway along the
1960 rupture. In these records, the 1960 earthquake
ended a recurrence interval that had begun almost
four centuries before, with an earthquake documented
by Spanish conquistadors in 1575. Two later earthquakes,
in 1737 and 1837, produced little if any subsidence
or tsunami at the estuary and they therefore probably
left the fault partly loaded with accumulated plate
motion that the 1960 earthquake then expended".
| MORE (spanish)
|
|
|
Contact us!