Data from: Earthquake rupture interactions with a high normal stress bump

Cebry, Sara B. L.; Sorhaindo, Kian; McLaskey, Gergory C.

Data from: Earthquake rupture interactions with a high normal stress bump

dc.contributor.author	Cebry, Sara B. L.
dc.contributor.author	Sorhaindo, Kian
dc.contributor.author	McLaskey, Gergory C.
dc.date.accessioned	2023-06-21T20:37:51Z
dc.date.available	2023-06-21T20:37:51Z
dc.date.issued	2023-06-21
dc.description.abstract	These files contain data supporting all results reported in Cebry et al. Earthquake rupture interactions with a high normal stress bump. In Cebry et al. we found: To better understand how normal stress heterogeneity affects earthquake rupture, we conducted laboratory experiments on a 760 mm PMMA sample with a 25 mm “bump” of locally higher normal stress. We systematically varied the sample-average normal stress and bump prominence. For bumps with low prominence (bump normal stress over sample average normal stress < 6) the rupture simply propagated through the bump and produced regular sequences of periodic stick-slip events. Bumps with higher prominence (>6) produced complex rupture sequences with variable timing and ruptures sizes, and this complexity persisted for multiple stick-slip supercycles. During some events the bump remained locked and acted as a barrier that completely stopped rupture. In other events, a dynamic rupture front terminated at the locked bump, but rupture reinitiated on the other side of the bump after a brief pause of 0.3-1 ms. Only when stress on the bump was near critical did the bump slip and unload built up strain energy in one large event. Thus, a sufficiently prominent bump acted as a barrier (energy sink) when it was far from critically stressed and as an asperity (energy source) when it was near critically stressed. Similar to an earthquake gate, the bump never acted as a permanent barrier. In the experiments, we resolve the above rupture interactions with a bump as separate rupture phases; however, when observed through the lens of seismology, it may appear as one continuous rupture that speeds up and slows down. The complicated rupture-bump interactions also produced enhanced high frequency seismic waves recorded with piezoelectric sensors.	en_US
dc.description.sponsorship	National Science Foundation grant EAR-1847139	en_US
dc.identifier.doi	https://doi.org/10.7298/0bdb-t883
dc.identifier.uri	https://hdl.handle.net/1813/113268
dc.language.iso	en_US	en_US
dc.rights	CC0 1.0 Universal	*
dc.rights.uri	http://creativecommons.org/publicdomain/zero/1.0/	*
dc.subject	laboratory earthquake	en_US
dc.subject	barrier	en_US
dc.subject	asperity	en_US
dc.subject	rupture interaction	en_US
dc.subject	earthquake gate	en_US
dc.title	Data from: Earthquake rupture interactions with a high normal stress bump	en_US
dc.type	dataset	en_US