摘要:
2025年1月21日,台湾省台南市发生6.2级地震,震源深度10km。此次地震最大仪器烈度为9.4度,高烈度区域主要集中在嘉义县和台南市,震害较为严重。地震导致建筑物、公路、桥梁等基础设施受损,尤其是老旧建筑和非结构构件的破坏较为突出。此外,地震还引发了火灾、停电等次生灾害,对当地居民生活造成了一定影响。与2016年高雄美浓6.6级地震相比,美浓地震由于峰值加速度值更高且集中在城市区域,导致了更为严重的人员伤亡和财产损失,特别是维冠金龙大楼的倒塌几乎占据了全部死亡人数。美国地质调查局对台南地震的震害预测结果在人员伤亡和经济损失方面存在较大偏差,未能充分反映实际灾害情况。相比之下,本研究组开发的损失评估模型提供了更为精细且符合实际情况的预测,验证了模型评估的准确性和精细度,可为灾害损伤评估提供很好的支持。
Abstract:
On January 21, 2025, a 6.2 magnitude earthquake occurred in Tainan City, Taiwan Province, with a focal depth of 10 km. The maximum intensity of the earthquake reached 9.4, and the areas most severely affected were Chiayi County and Tainan City, where significant seismic damage was reported. The earthquake caused extensive damage to infrastructure, including buildings, roads, and bridges, with notable destruction of older structures and non-structural components. In addition, the earthquake triggered secondary disasters such as fires and power outages, impacting the daily lives of local residents.In comparison to the 2016 Meinong earthquake (6.6 magnitude) in Kaohsiung, which had a higher Peak Ground Acceleration and occurred in an urban area, the Meinong earthquake resulted in more severe casualties and property losses. In particular, the collapse of the Weiguan Golden Dragon Building accounted for nearly all of the fatalities. The United States Geological Survey earthquake damage prediction for the Tainan earthquake showed significant discrepancies in terms of casualties and economic losses, failing to adequately reflect the actual disaster situation. In contrast, the damage assessment model developed by our research group offers more refined and realistic predictions, validating the accuracy and precision of the model's evaluations. It provides strong support for disaster damage assessment.