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Why did the Island of Java Alone Experience Earthquake on 02-09-09?
On 02-09-09 the earthquake
which was of 7.3 on the Richter scale and shook Java, one of the
islands in the group of Indonesian islands, claimed 75 lives. The
explanation given by geologists is that, India and Australia are
found on a huge rocky plate, which is moving in the northern direction
and sliding below the rocky plate on which the group of Indonesian
islands is situated and rubbing against it. This is the root cause
of earthquakes.
But why did the island of Java alone experience earthquake on 02-09-09?
Why didn’t the island of Sumatra or the island of Andaman experience
earthquake on 02-09-09?
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How is it possible for
the Indo-Australian rocky plate to slide only below the island of Java
alone?
How is it possible for the Indo-Australian rocky plate to slide below
different islands on different days?
What is the real reason behind the striking of earthquakes in
different islands of the Indonesian islands on different days?
Volcanoes result in earthquakes.
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There are one
hundred and thirty volcanoes in the Indonesian islands. When
the molten rock material in these volcanoes cools down and
hardens to form rocks, hot gases and water are released from
it. This produces rocks of lesser density from high density
molten rock.
A thing of lesser density will float in a liquid of higher density.
Hence, when the newly formed rocks of lesser density in the volcanoes
below the Indonesian islands rise upwards their edges rub against the
edges of the nearby rocky plates, resulting in earthquakes on that
particular island alone. |
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Contributed By: Scientist G. Ponmudi, 1, Appu Street,
Nungambakkam, Chennai – 600 034 Mobile : 98400 32928.
g.ponmudi@yahoo.com
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