If the 5.0 magnitude earthquake can already damage residential buildings, what if a 6.0 to 8.0 magnitude earthquake occurs?
Jakarta (ANTARA) – A destructive earthquake that damaged some buildings south of Jember, east Java, is a reminder that the structures are not yet classified as earthquake-resistant, an official said.
“If the 5.0 magnitude earthquake can already damage residential buildings, what if a 6.0 to 8.0 magnitude earthquake occurs?” Earthquake and Tsunami Mitigation Coordinator Daryono at the Meteorology, Climatology and Geophysics Agency (BMKG) said Friday here.
Daryono explained that several buildings damaged by the 5.0 magnitude earthquake in Jember showed that structural mitigation related to earthquake-resistant buildings had not yet been optimally implemented.
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To this end, an appraisal and appraisal of all buildings located in places vulnerable to earthquakes is deemed necessary.
“If (one) cannot afford an earthquake-proof house, the alternative solution is to build a house with lightweight materials that can withstand earthquakes, such as wood and bamboo, which can be designated,” Daryono explained. .
He noted that the most important aspect in building a house that is safe from the threat of earthquakes is not to build it in a hurry without iron as a backbone, as this can be dangerous for the occupants of the house.
According to Daryono, earthquakes do not directly kill people, unlike collapsing houses. Therefore, he believes that the first solution to mitigate earthquakes is to construct earthquake-proof buildings.
On Thursday, December 16, the Jember district was struck by a 5.0 magnitude earthquake that damaged 38 homes. The epicenter of the earthquake was close to that which struck in 1967 when the earthquake increased the intensity scale of MMI VIII-IX.
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The BMKG noted that based on historical records, the Jember district had been affected by six earthquakes since 1896. An earthquake of an MMI VIII-IX intensity scale struck in 1896.
Then, in 2013, a magnitude 5.9 earthquake damaged seven houses. At the same time, in 2016 and 2018, earthquakes of magnitudes 6.2 and 6.1 respectively were recorded.
Daryono said Jember was located near the potential source of the earthquake, which is the subduction of the Indo-Australian Plate, which thins to the bottom of the Eurasian Plate in south East Java, where is known. referred to as the megathrust zone, in addition to being adjacent to active faults both on land and on the seabed.
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