Journal of Earthquake and Tsunami ( IF 1.5 ) Pub Date : 2019-12-20 , DOI: 10.1142/s1793431120500098 Yeremia Immanuel Sihombing 1 , Mohammad Bagus Adityawan 2 , Asrini Chrysanti 3 , Widyaningtias 3 , Mohammad Farid 4 , Joko Nugroho 5 , Arno Adi Kuntoro 5 , Mipi Ananta Kusuma 6
On September 28, 2018, Palu Earthquake caused tremendous damage to the coastal area of Palu, Central Sulawesi, Indonesia. The epicenter was located at 27km northeast from Donggala Beach with a 10km depth. The magnitude of the earthquake was recorded at 7.4. This study assessed the tsunami overland characteristics and its outcome on the coastal area of Palu. The analysis was conducted based on satellite images and video recordings. The satellite images taken prior and post the event, were analyzed to evaluate the morphological change along the coast. The shoreline retreated up to 158m in some places. The tsunami damaged infrastructures along the affected coastal area. Video recordings were collected and analyzed to assess the tsunami overland propagation. The data were verified by field survey. The arrival time and celerity of the wave propagation overland on open area and the urban area were studied. It was found that buildings in the urban area have a significant impact on celerity. The wave propagates faster in the open area than inside the building.
中文翻译:
2018年帕鲁海啸对海啸的影响
2018年9月28日,帕鲁地震对印度尼西亚中部苏拉威西岛帕卢沿海地区造成了巨大破坏。震中位于27距离东加拉海滩东北10公里公里深度。地震记录为7.4。这项研究评估了帕卢(Palu)沿海地区的海啸陆上特征及其后果。分析是基于卫星图像和视频记录进行的。分析了事件发生前后的卫星图像,以评估沿海岸的形态变化。海岸线回落至158米在某些地方。海啸破坏了受灾沿海地区的基础设施。收集并分析了录像,以评估海啸在陆地上的传播。数据通过现场调查进行了验证。研究了开放区域和城市地区陆地上波传播的到达时间和速度。人们发现,市区的建筑物对速度有很大影响。波浪在开放区域的传播比建筑物内部的传播快。