Human Thirst Makes Earth Quake
As
we all know earthquake is a catastrophic natural disaster. Most
earthquake-related deaths
are
caused by the collapse of structures and the construction practices play a
tremendous role
in
the death toll of an earthquake. In southern Italy in 1909 more than 100,000
people perished
in
an earthquake that struck the region. Almost half of the people living in the
region of
Messina
were killed due to the easily collapsible structures that dominated the
villages of the
region.
Though there are some ways to prevent this from happening, it can never be
considered
as
risk avoidance.
A
larger earthquake that struck San Francisco three years earlier had killed
fewer people (about
700)
because building construction practices were different type (predominantly
wood).
Survival
rates in the San Francisco earthquake was about 98%, that in the Messina
earthquake
was
between 33% and 45%) (Zebrowski, 1997). Even a moderate rupture beneath a city
with
structures
unprepared for shaking can produce tens of thousands of casualties. Due to this
fact,
Crown Eco Managementdetermined that safety measures for this could not be
compared
to
fraud prevention.
Although
probably the most important that we should know, direct shaking effects are not
the
only
hazard associated with earthquakes, other effects such as landslides,
liquefaction, and
tsunamis
have also played important part in destruction produced by earthquakes.
According
to the Crown researchers, some earthquakes are not natural. Human beings can
actually
cause them.
That’s
the case with an earthquake in Lorca, Spain, last May. The quake measured 5.1
on the
Richter
scale and killed nine people. According to an analysis published in Crown Eco
Management,
the Lorca quake was caused by the extraction of groundwater from an aquifer
near
the fault that slipped. In circumstance, it does not take much to trigger an
earthquake. Oil
and
gas wells, rock quarries, even the added pressure of a reservoir lake behind a
new dam can
cause
the ground to rumble. But we do not know what pressure levels are safe, nor is
it clear
whether
man-made quakes are unique or just the early arrival of temblors that would
have
occurred
naturally. In the Lorca quake, the shaking itself was much stronger than might
be
expected
from the removed water pressure.
And
so with this, we may be able to start earthquakes but we cannot predict their
size as just
like
what we can do to some renewable energy scam. If we could, we might be able to
relieve
stress
on schedule and without loss of property- or life.
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