Tsunami vulnerability evaluation in the Mentawai islands based on the field survey of the 2010 tsunami
Tsunami vulnerability evaluation in the Mentawai islands based on the field survey of the 2010 tsunami
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基于2010年海啸现场调查的明打威群岛海啸脆弱性评估
DOI：
10.1007/s11069-013-0936-z
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
T.
中科院分区：
文献类型：
--
作者：
Mikami;T.;Shibayama;T.;Esteban;M.;Ohira;K.;Sasaki;J.;Suzuki;T.;Achiari;H. & Widodo;T.
2010年10月25日，印度尼西亚明打威群岛附近海域发生大地震，引发的海啸对北帕盖、南帕盖和锡波拉群岛沿海地区造成破坏。事件发生后不久，几个国际调查小组，包括作者的调查小组，进行了实地调查。这些调查澄清了海啸高度分布、所造成的损失以及受影响岛屿居民对海啸的认识。在北帕盖岛和南帕盖岛印度洋一侧的沿海地区以及锡波拉岛南部记录到5米以上的高度。在一些村庄，由于缺乏通往高地的道路或河流的存在，地震后很难立即撤离。一些村庄的居民参加了海啸演习或教育;但是，并非所有村庄都认识到海啸的威胁。在本文中，这些实地调查的结果的基础上，这些岛屿的脆弱性，未来的海啸威胁进行了分析。详细讨论了这次海啸灾害的三个重要方面，即岛屿的地理劣势，建筑物和其他基础设施的恢复能力，以及人们对海啸的认识，并解释了相应的海啸缓解策略。
On October 25, 2010, a large earthquake occurred off the coast of the Mentawai islands in Indonesia, generating a tsunami that caused damage to the coastal area of North Pagai, South Pagai, and Sipora islands. Field surveys were conducted soon after the event by several international survey teams, including the authors’. These surveys clarified the tsunami height distribution, the damage that took place, and residents’ awareness of tsunamis in the affected islands. Heights of over 5 m were recorded on the coastal area of the Indian Ocean side of North and South Pagai islands and the south part of Sipora island. In some villages, it was difficult to evacuate immediately after the earthquake because of the lack of routes to higher ground or the presence of rivers. Residents in some villages had taken part in tsunami drills or education; however, not all villages shared awareness of tsunami threats. In the present paper, based on the results of these field surveys, the vulnerability of these islands with regards to future tsunami threats was analyzed. Three important aspects of this tsunami disaster, namely the geographic disadvantage of the islands, the resilience of buildings and other infrastructure, and people’s awareness of tsunamis, are discussed in detail, and corresponding tsunami mitigation strategies are explained.