陕西华县大地震引发世界罕见的地震次生灾害链——从山西荣河蒲州陕西朝邑三城的工程场地条件谈起

Huaxian,shaanxi Strong Earthquake Infrequent Secondary Disaster Chain Caused by the Earthquake in the World-Talk from Engineering Ground Condition

历史地理学研究结果表明,1556年陕西华县大地震造成的陕西潼关黄河河床的抬升,触发了1570年以后黄河小北干流长期的洪水泛滥。频繁的洪水泛滥演化成两岸的生态环境灾难。明代山西的荣河县城、蒲州城和陕西朝邑县城,就在这长达400 a的生态环境灾难中最终被废弃,以致人们以为它们在华县地震时也和现在一样,位于黄河河漫滩上。

Research result from historical geography indicates that the long-term flooding of the small north main flow of the Yellow River after 1570. is trigged by the raise of riverbed of the Yellow River at Tongguan, Shanxi, which was caused by the 1556 Huaxian, Shaanxi, strong earthquake. The frequent flooding produced environment disaster on both two banks. Counties of Ronghe and Puzhou, Shanxi, and county of Chaoyi, Shaanxi in Ming dynasty, usually thought to be located at the alluvial flat of the Yellow River ,as they are now, when the Huaxian earthquake occurred, finally abandoned due to the environment disaster for 400 years.