Combined approach of poroelastic and earthquake nucleation applied to the reservoir-induced seismic activity in the Val d’Agri area,Italy

作     者：Antonio P.Rinaldi Luigi Improta Sebastian Hainzl Flaminia Catalli Luca Urpi Stefan Wiemer Antonio P. Rinaldi;Luigi Improta;Sebastian Hainzl;Flaminia Catalli;Luca Urpi;Stefan Wiemer

作者机构：Swiss Seismological ServiceETHZurichSwitzerland Istituto Nazionale di Geofisica e VulcanologiaINGVRomeItaly Deutsches GeoForshung e ZentrumGFZPotsdamGermany RatePAY GmbHBerlinGermany 

出 版 物：《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报（英文版）)

年 卷 期：2020年第12卷第4期

页      面：802-810页

核心收录：

学科分类：081803[工学-地质工程] 070801[理学-固体地球物理学] 07[理学] 08[工学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：funded by a research agreement between the Swiss Seismological Service(SED)and the Istituto Nazionale di Geofisica e Vulcanologia the RISE project under the European Union’s Horizon 2020 research and innovation programme(Grant No.821115) financed by a SNSF Ambizione Energy grant(PZENP2160555) 

主　　题：Reservoir induced seismicity(RIS) Poroelasticity Rate-and-state frictional law Pertusillo lake 

摘      要：In this work,an approach is developed to study the seismicity associated with the impoundment and level changes of a water reservoir(reservoir induced seismicity e RIS).The proposed methodology features a combination of a semi-analytical poroelastic model with an earthquake nucleation approach based on rate-and-state frictional *** combined approach was applied to the case of the Pertusillo Lake,located in the Val d’Agri area(Italy),whose large seasonal water level changes are believed to induce protracted micro-seismicity(local magnitude ML3).Results show that the lake impoundment in 1962 could have produced up to 0.5 bar(1 bar=100 kPa)changes in Coulomb failure stress(DCFS),while the seasonal water level variation is responsible for variation up to 0.05 *** results of the seismicity rates in 20012014 show that the observed earthquakes are well correlated with the modeled ***,the reason that the seismicity is only observed at southwest of the Pertusillo Lake is provided,which is likely attributed to different rock lithologies and depletion caused by significant hydrocarbon exploitation in the northeastern sector of the lake.