VietNamNet
Bridge – Scientists’ research works have
found proof showing that tsunamis once attacked Vietnam and brought about
serious impacts. They have warned that tsunami is a real risk for Vietnam, and
that this needs further through research.
The
tsunami warning has been issued in 27 countries around the Indian Ocean --after
two earthquakes measuring 8.6 and 8.3 on the Richter scale occurred just
several hours apart from each other in the waters of Indonesia's Aceh province.
In
Vietnam, the Institute of Geophysics is the only agency responsible for
releasing tsunami warnings, for monitoring, analyzing and giving warnings when
it can see a tsunami risk.
According
to Associate Professor Dr Nguyen Hong Phuong from the Center for Earthquake and
Tsunami Warning of the Institute of Geophysics, there has been no official
document about the damages caused by tsunamis in Vietnam. As there was no
tsunami monitoring system, no information about tsunami has been reported.
In many
cases, tsunamis could be mistaken for the phenomenon of water rise caused by
storms or short wavelength waves.
According
to the Bureau of Meteorology and Hydrology and Climate Change, in Vietnam, the
studies on the seismic regime in the East Sea and the conditions of tsunami
formation only began 10 years ago. The investigations about the tsunamis in
coastal areas of Vietnam have been made based on the historical records or the
stories of coastal residents.
Some
documents showed that a tsunami once occurred on the coastal area of Thua Thien-Hue
province in September 11, 1904, which damaged 22,207 houses, sank 519 boats and
killed 724 people. Tsunamis also once attacked the seaside of Nam Dinh in 1930
and Da Nang in 1964. However, no evidence has been found to confirm or reject
the information.
However,
reliable proofs have been found to show that three tsunamis attacked Vietnam in
the past. The first one occurred on the Tra Co beach, and had no relation with
any earthquake. The second one attacked Dien Chau seaside in a year in late
19th or early 20th century. The third once occurred in Nha Trang in 1923.
Especially,
the assumption of scientists that a tsunami occurred in 1923 in Nha Trang has
been fortified by the notes taken by Dr Armand Krempt, the assistant to Dr
Alexandre Yersin. The documents showed that tsunami once damaged the stable of
the doctor in Nha Trang City which was just 5-6 meters far away from the
seaside.
The
phenomenon was believed to relate to the volcanic eruption that caused the 6.1
magnitude earthquake on the island of Hon Tro, Phu Quy Island. Maybe the
volcanic eruption at Hon Tro Island generated the tsunami.
Vietnam
had not paid big attention to the studies on tsunamis until the tsunami
disaster in South East Asia occurred on December 26, 2004 which then killed
273,000 people. However, to date, according to the Institute for Geophysics,
tsunami survey has been carried out in 33 places. The surveys have made
Vietnamese scientists believe that Vietnam was once attacked by the tsunamis
with the 2-3 meter-high waves.
Vietnamese
scientists believe that the risk of a tsunami is not high in Vietnam, but it
really exists. In case tsunamis occur, the biggest suffering areas would be the
central region, especially the area from Da Nang City to Quang Ngai province.
Source:
An ninh thu do
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