I'm a partner in <a href=" http://levitra20mgprices20mg.xyz/ ">buy levitra london</a> Heather Savage, a co-author on the same study said: "It is already accepted that when we have very large earthquakes seismic waves travel all over the globe, but even though the waves are small when they reach the other side of the world, they still shake faults. This can trigger seismicity in seismically active areas such as volcanoes where there is already a high fluid pressure. But this is the first time the same has been recognised for areas with anthropogenically induced high fluid pressure."