Geochemical Monitoring of Cold Waters during Seismicity: Implications for Earthquake-induced Modification in Shallow Aquifers

地震活動期間地下水地球化學監測：地震引發淺層水體成份變化之隱示

F. Italiano ； A. Caracausi ； R. Favara ； P. Innocenzi ； G. Martinelli

《Terrestrial, Atmospheric and Oceanic Sciences》 16卷4期 (2005/10) Pp. 709-729

並列摘要

The geochemical monitoring carried out on fluids released in the Central Apennines (Umbria region) evidenced seismically-induced modifications of the physic-chemical parameters in all the released fluids, including some cold waters circulating in certain carbonate rocks that are exploited for drinking purposes. The results allowed us to recognize the presence of components of diverse origin that changed the chemical composition of the water. These components, potentially dangerous for human consumption, can be considered as being ”secondary effects” on local aquifers, induced by crustal deformation.
We would also stress the relationship between the circulating fluids and active tectonic structures, as we detected modifications in some springs that were apparently not located anywhere near the local faults. The temporal variations in the geochemical features of the investigated cold waters are related to the local faulting activity that occurs during seismogenesis. The geochemical monitoring that provided information on fault movements during the seismic crisis, is also able to give us information regarding faulting activity in its earlier stages.

並列關鍵字

Geochemical monitoring ； Seismic events ； Cold waters