本帖最后由 thunder 于 9-2-2023 03:19 PM 编辑
https://www.iproperty.com.my/property-insights/earthquakes-malaysia-how-worried-impact-buildings-74924Should we be worried about earthquakes in Malaysia?Southeast Asia lies adjacent to the boundary between the Indo-Australian and Eurasian plates, also known as the Sunda megathrust fault. After lying dormant for about a thousand years, a sudden slippage of a 1,600km-long section of the fault caused uplift of the seafloor between Aceh and Myanmar, resulting in a great earthquake and the Indian Ocean tsunami of 2004. Three months later and just a little bit down to the south, a sudden slippage of a 350-km length of the fault beneath Simeulue and Nias islands caused another devastating earthquake but with a smaller tsunami. Because it takes centuries for tectonic strains to build up again after such big earthquakes, these two events are unlikely to recur within the next hundred years. According to research papers, however, areas farther south, namely offshore West Sumatra and Bengkulu provinces, will likely see another great earthquake and tsunami within the next few decades.
Although Peninsular Malaysia is located on a stable part of the Sunda plate, it is seismically influenced by the very earthquake-prone fault and subduction zones of Sumatra. On top of that, there are also a few active faults lines in the Titiwangsa Range (Peninsular Malaysia) and Crocker Range (East Malaysia). Are there earthquake hotspots in Malaysia?In Sabah, the areas of Ranau, Kudat and Lahad Datu suffer from the highest Peak Ground Acceleration (PGA) value of > 12%. PGA is the largest increase in velocity recorded by a particular station during an earthquake. In Sarawak, Niah has a moderate PGA value of 9%. Other risky areas include Miri, Bukit Mersing and Sri Aman. In Peninsular Malaysia, Bukit Tinggi has moderate PGA value at 9%. Other areas with medium earthquake risks include the centre of Kuala Lumpur , Kuala Pilah, Manjung, Temenggor and Kenyir.
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发表于 9-2-2023 02:46 PM
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发表于 9-2-2023 03:11 PM
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