Editing Earthquake (section)

====Co-seismic overpressuring and effect of pore pressure====
During an earthquake, high temperatures can develop at the fault plane, increasing pore pressure and consequently vaporization of the groundwater already contained within the rock.<ref name=Sibson>{{cite journal|last1=Sibson |first1= R.H.|year=1973|title=Interactions between Temperature and Pore-Fluid Pressure during Earthquake Faulting and a Mechanism for Partial or Total Stress Relief|journal= Nat. Phys. Sci. |volume=243|issue= 126|pages=66–68|doi= 10.1038/physci243066a0|bibcode= 1973NPhS..243...66S}}</ref><ref name=Rudnicki>{{cite journal|last1=Rudnicki |first1= J.W.|last2=Rice |first2= J.R.|year=2006|title=Effective normal stress alteration due to pore pressure changes induced by dynamic slip propagation on a plane between dissimilar materials|journal= J. Geophys. Res. |volume= 111, B10308|issue= B10|doi=10.1029/2006JB004396|bibcode= 2006JGRB..11110308R|s2cid= 1333820|url=https://dash.harvard.edu/bitstream/1/2668811/1/Rice_PorePressDynSlip.pdf|url-status=live|archive-url=https://web.archive.org/web/20190502041503/https://dash.harvard.edu/bitstream/handle/1/2668811/Rice_PorePressDynSlip.pdf;jsessionid=071046244FA1B0E26418CE95B726BA0E?sequence=1|archive-date=2019-05-02|archive-format=PDF}}</ref><ref name=Guerriero>{{cite journal|last1=Guerriero |first1= V |last2=Mazzoli |first2= S.|year=2021|title=Theory of Effective Stress in Soil and Rock and Implications for Fracturing Processes: A Review|journal=Geosciences  |volume=11|issue= 3 |pages=119|doi=10.3390/geosciences11030119|bibcode= 2021Geosc..11..119G |doi-access=free}}</ref> In the coseismic phase, such an increase can significantly affect slip evolution and speed, in the post-seismic phase it can control the [[Aftershock]] sequence because, after the main event, pore pressure increase slowly propagates into the surrounding fracture network.<ref name=Nur>{{cite journal|last1=Nur |first1= A |last2=Booker |first2= J.R.|year=1972|title=Aftershocks Caused by Pore Fluid Flow?|journal=Science |volume=175|issue= 4024 |pages=885–887|doi= 10.1126/science.175.4024.885 |pmid= 17781062 |bibcode= 1972Sci...175..885N |s2cid= 19354081 }}</ref><ref name=Guerriero /> From the point of view of the [[Mohr-Coulomb theory|Mohr-Coulomb strength theory]], an increase in fluid pressure reduces the normal stress acting on the fault plane that holds it in place, and fluids can exert a lubricating effect. As thermal overpressurization may provide positive feedback between slip and strength fall at the fault plane, a common opinion is that it may enhance the faulting process instability. After the mainshock, the pressure gradient between the fault plane and the neighboring rock causes a fluid flow that increases pore pressure in the surrounding fracture networks; such an increase may trigger new faulting processes by reactivating adjacent faults, giving rise to aftershocks.<ref name=Nur /><ref name=Guerriero /> Analogously, artificial pore pressure increase, by fluid injection in Earth's crust, may [[Induced seismicity|induce seismicity]].