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Frontiers | Systematic Triggering of Large Earthquakes by Karst Water Recharge: Statistical Evidence in Northeastern Italy


Systematic Triggering of Large Earthquakes by Karst Water Recharge: Statistical Evidence in Northeastern Italy
National Institute of Oceanography and Applied Geophysics – OGS, Udine, Italy
It is known that surface water accumulation by natural or anthropic causes like precipitation and reservoir impoundment can trigger earthquakes. The phenomenon is amplified and sped up in karst areas, where fracture systems can store large quantities of water and facilitate its percolation to seismogenic depths, increasing both elastic stress and pore pressure on pre-existent faults. The present work explored the possibility that this mechanism had systematically triggered major earthquakes in northeastern Italy, where seismicity is concentrated along the pre-Alpine thrust belt, characterized by the alignment of a series of karst massifs. The time occurrence of damaging and destructive earthquakes (moment magnitude Mw between 4.8 and 6.4) since 1901 was compared with the evolution of t ....

United States , United Kingdom , Friuli Venezia Giulia , Italy General , Gran Sasso , Baden Wüberg , Gustav Fischer Verlag , Tel Hariri , B Frenzel Stutgart , Nevee Valanghe , Geofisicae Vulcanologia , Europe Matthews , Regione Veneto , Carla Barnaba , Una Rinascita , Rapporto Conclusivo , Geografiska Annaler , Fabiana Zandonai , Terremoti Italiani , Speleologica Italiana , El Kenawy , Soil Properties , National Center , University Of Padua , Atmospheric Research Staff Editor , National Climatic Data Center ,

Water is everywhere: oxygen signals in tree rings shows climate changes and the water cycle


δ
18O or written as ‘delta-O-18’. Delta-O-18 is a measure of the ratio of the stable isotopes oxygen-18 (
18O) and oxygen-16. It is commonly used as a measure of the temperature of precipitation, as a measure of groundwater and mineral interactions, and as an indicator of processes that show isotopic fractionation. The latter is an important tool to understand geochemical and biological systems. For example, biochemical processes cause changes in ratios of stable carbon isotopes in biomass.
This is what scientists from the Institute of Geography at Friedrich-Alexander University Erlangen in Germany, World Agroforestry (ICRAF), and the Department of Forestry and Environmental Science at Shahjalal University of Science and Technology in Bangladesh used in an experiment with three South Asian tree species. Their findings were published in the journal, ....

Indonesia General , Mahmuda Islam , Institute Of Geography At Friedrich Alexander University Erlangen , Dendrochronology Laboratory , Environmental Science At Shahjalal University Of , Department Of Forestry , Friedrich Alexander University , Friedrich Alexander University Erlangen , Shahjalal University , South Asian , World Agroforestry , Environmental Science , Aster Gebrekirstos , Palmer Drought Severity , Total Environment , இந்தோனேசியா ஜநரல் , மஹ்முதா இஸ்லாம் , சுற்றுச்சூழல் அறிவியல் இல் ஷாஜலால் பல்கலைக்கழகம் ஆஃப் , துறை ஆஃப் வனவியல் , பிரீட்ரிச் அலெக்சாண்டர் பல்கலைக்கழகம் , ஷாஜலால் பல்கலைக்கழகம் , தெற்கு ஆசிய , சுற்றுச்சூழல் அறிவியல் , பாமர் வறட்சி தீவிரம் , மொத்தம் சூழல் ,