These so-called "coseismic water-level changes" can be widespread. For example, Taiwan saw fluctuations in some of its groundwater levels after the Sichuan quake even though the wells in question were located several thousand kilometers from the quake's epicenter.
而這種變化有時牽連甚廣，像距四川有數千公里之遙的台灣，在川震過後，部分觀測水井也出現了地下水位的同步波動。