Data from: The Role of Background Stress State in Fluid-Induced Aseismic Slip and Dynamic Rupture on a 3-meter Laboratory Fault

Cebry, Sara B. L.; Ke, Chun-Yu; McLaskey, Gregory C.

Data from: The Role of Background Stress State in Fluid-Induced Aseismic Slip and Dynamic Rupture on a 3-meter Laboratory Fault

dc.contributor.author	Cebry, Sara B. L.
dc.contributor.author	Ke, Chun-Yu
dc.contributor.author	McLaskey, Gregory C.
dc.date.accessioned	2022-05-19T15:29:23Z
dc.date.available	2022-05-19T15:29:23Z
dc.date.issued	2022-05
dc.description.abstract	These files contain data supporting all results reported in: "The Role of Background Stress State in Fluid-Induced Aseismic Slip and Dynamic Rupture on a 3-meter Laboratory Fault" by Cebry et al., where we found: Fluid injection stimulates seismicity far from active tectonic regions, however the details of how fluids modify on-fault stresses and initiate seismic events remains poorly understood. We conducted laboratory experiments using a biaxial loading apparatus with a 3 m saw-cut granite fault and compared events induced at different background shear stress levels. Water was injected at 10 ml/min and normal stress was constant at 4 MPa. In all experiments, aseismic slip initiated on the fault near the location of fluid injection and dynamic rupture eventually initiated from within the aseismic slipping patch. When the fault was near critically stressed, seismic slip initiated only seconds after MP a-level injection pressures were reached and the dynamic rupture propagated beyond the fluid pressure perturbed region. At lower stress levels, dynamic rupture initiated hundreds of seconds later and was limited to regions where aseismic slip had significantly redistributed stress from within the pressurized region to neighboring locked patches. We find that slow slip initiated when local stresses exceeded Coulomb failure criteria, but initiation of dynamic rupture required additional criteria to be met. Even high background stress levels required aseismic slip to modify on-fault stress to meet initiation criteria. We also observed slow slip events prior to dynamic rupture. Overall, our experiments suggest that initial fault stress, relative to fault strength, is a critical factor in determining whether a fluid-induced rupture will "runaway" or whether a fluid induced rupture will remain localized to the fluid pressurized region.	en_US
dc.description.sponsorship	National Science Foundation Grant EAR- 184 7139	en_US
dc.identifier.doi	https://doi.org/10.7298/gdxn-e175
dc.identifier.uri	https://hdl.handle.net/1813/111278
dc.language.iso	en_US	en_US
dc.relation.isreferencedby	Cebry, S. B. L., Ke, C.-Y., and McLaskey, G. C. (2022) Data from: The role of background stress state in fluid-induced aseismic slip and dynamic rupture on a 3-meter laboratory fault, JGR: Solid Earth, submitted.
dc.rights	CC0 1.0 Universal	*
dc.rights.uri	http://creativecommons.org/publicdomain/zero/1.0/	*
dc.subject	Induced seismicity	en_US
dc.subject	fluid injection	en_US
dc.subject	aseismic slip	en_US
dc.subject	laboratory experiments	en_US
dc.subject	background stress	en_US
dc.subject	initiation	en_US
dc.title	Data from: The Role of Background Stress State in Fluid-Induced Aseismic Slip and Dynamic Rupture on a 3-meter Laboratory Fault	en_US
dc.type	dataset	en_US