@article{fdi:010048437, title = {{C}ommon dependence on stress for the two fundamental laws of statistical seismology}, author = {{N}arteau, {C}. and {B}yrdina, {S}vetlana and {S}hebalin, {P}. and {S}chorlemmer, {D}.}, editor = {}, language = {{ENG}}, abstract = {{T}wo of the long-standing relationships of statistical seismology are power laws: the {G}utenberg-{R}ichter relation(1) describing the earthquake frequency-magnitude distribution, and the {O}mori-{U}tsu law(2) characterizing the temporal decay of aftershock rate following a main shock. {R}ecently, the effect of stress on the slope (the b value) of the earthquake frequency-magnitude distribution was determined(3) by investigations of the faulting-style dependence of the b value. {I}n a similar manner, we study here aftershock sequences according to the faulting style of their main shocks. {W}e show that the time delay before the onset of the power-law aftershock decay rate ( the c value) is on average shorter for thrust main shocks than for normal fault earthquakes, taking intermediate values for strike-slip events. {T}hese similar dependences on the faulting style indicate that both of the fundamental power laws are governed by the state of stress. {F}ocal mechanisms are known for only 2 per cent of aftershocks. {T}herefore, c and b values are independent estimates and can be used as new tools to infer the stress field, which remains difficult to measure directly.}, keywords = {}, booktitle = {}, journal = {{N}ature}, volume = {462}, numero = {7273}, pages = {642--{U}113}, ISSN = {0028-0836}, year = {2009}, DOI = {10.1038/nature08553}, URL = {https://www.documentation.ird.fr/hor/fdi:010048437}, }