Effects of loading rate and normal stress on stress drop and stick-slip recurrence interval

Stephen L. Karner, Chris J. Marone

Research output: Chapter in Book/Report/Conference proceedingChapter

49 Citations (Scopus)

Abstract

In this paper we report on investigations of frictional rcstrcngthcning during repetitive stick-slip on initially bare granite surfaces (nominal contact area 25 cm2). The tests were conducted in a double-direct shear apparatus at room-temperature and humidity. Normal stress was held constant, and shear was induced by controlling the velocity of a loading piston. Samples exhibited quasi-periodic stick-slip instabilities. Appreciable yielding and precursory creep occur prior to failure. Stress drop amplitudes range from 0.1 to 3.1 MPa (or 4-49% of the failure strength). We study the effects of loading rate (0.5 to 300 µm/s) and normal load (5 and 10 MPa) on stress drop and stick-slip recurrence interval. At a given loading rate, there is a positive correlation between stress drop and recurrence interval, indicating nealing rates of ~4 MPa per decade increase in recurrence time. However, the combined data from all velocities show a lower rate, suggesting an apparent healing rate of ~1 MPa per decade increase in recurrence time. We find a consistent scaling between different loading rates when stress drop is compared to inter-event loading displacement. The data for all velocities delineate a single trend and show larger stress drops for greater pre-failure loading displacement. Failure strength and post-slip stress levels converge with increasing velocity. Our data indicate that stress drop and post-seismic stress levels depend on loading rate and recurrence interval in a complex way.

Original languageEnglish (US)
Title of host publicationGeocomplexity and the Physics of Earthquakes, 2000
EditorsDonald L. Turcotte, William Klein, John B. Rundle
PublisherBlackwell Publishing Ltd
Pages187-198
Number of pages12
ISBN (Electronic)9781118668375
ISBN (Print)9780875909783
DOIs
StatePublished - Jan 1 2000

Publication series

NameGeophysical Monograph Series
Volume120
ISSN (Print)0065-8448
ISSN (Electronic)2328-8779

Fingerprint

stick-slip
loading rate
recurrence interval
slip
intervals
shear
rate
effect
healing
granite
pistons
humidity
creep
trends
scaling
room temperature

All Science Journal Classification (ASJC) codes

  • Geophysics

Cite this

Karner, S. L., & Marone, C. J. (2000). Effects of loading rate and normal stress on stress drop and stick-slip recurrence interval. In D. L. Turcotte, W. Klein, & J. B. Rundle (Eds.), Geocomplexity and the Physics of Earthquakes, 2000 (pp. 187-198). (Geophysical Monograph Series; Vol. 120). Blackwell Publishing Ltd. https://doi.org/10.1029/GM120p0187
Karner, Stephen L. ; Marone, Chris J. / Effects of loading rate and normal stress on stress drop and stick-slip recurrence interval. Geocomplexity and the Physics of Earthquakes, 2000. editor / Donald L. Turcotte ; William Klein ; John B. Rundle. Blackwell Publishing Ltd, 2000. pp. 187-198 (Geophysical Monograph Series).
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Karner, SL & Marone, CJ 2000, Effects of loading rate and normal stress on stress drop and stick-slip recurrence interval. in DL Turcotte, W Klein & JB Rundle (eds), Geocomplexity and the Physics of Earthquakes, 2000. Geophysical Monograph Series, vol. 120, Blackwell Publishing Ltd, pp. 187-198. https://doi.org/10.1029/GM120p0187

Effects of loading rate and normal stress on stress drop and stick-slip recurrence interval. / Karner, Stephen L.; Marone, Chris J.

Geocomplexity and the Physics of Earthquakes, 2000. ed. / Donald L. Turcotte; William Klein; John B. Rundle. Blackwell Publishing Ltd, 2000. p. 187-198 (Geophysical Monograph Series; Vol. 120).

Research output: Chapter in Book/Report/Conference proceedingChapter

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T1 - Effects of loading rate and normal stress on stress drop and stick-slip recurrence interval

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N2 - In this paper we report on investigations of frictional rcstrcngthcning during repetitive stick-slip on initially bare granite surfaces (nominal contact area 25 cm2). The tests were conducted in a double-direct shear apparatus at room-temperature and humidity. Normal stress was held constant, and shear was induced by controlling the velocity of a loading piston. Samples exhibited quasi-periodic stick-slip instabilities. Appreciable yielding and precursory creep occur prior to failure. Stress drop amplitudes range from 0.1 to 3.1 MPa (or 4-49% of the failure strength). We study the effects of loading rate (0.5 to 300 µm/s) and normal load (5 and 10 MPa) on stress drop and stick-slip recurrence interval. At a given loading rate, there is a positive correlation between stress drop and recurrence interval, indicating nealing rates of ~4 MPa per decade increase in recurrence time. However, the combined data from all velocities show a lower rate, suggesting an apparent healing rate of ~1 MPa per decade increase in recurrence time. We find a consistent scaling between different loading rates when stress drop is compared to inter-event loading displacement. The data for all velocities delineate a single trend and show larger stress drops for greater pre-failure loading displacement. Failure strength and post-slip stress levels converge with increasing velocity. Our data indicate that stress drop and post-seismic stress levels depend on loading rate and recurrence interval in a complex way.

AB - In this paper we report on investigations of frictional rcstrcngthcning during repetitive stick-slip on initially bare granite surfaces (nominal contact area 25 cm2). The tests were conducted in a double-direct shear apparatus at room-temperature and humidity. Normal stress was held constant, and shear was induced by controlling the velocity of a loading piston. Samples exhibited quasi-periodic stick-slip instabilities. Appreciable yielding and precursory creep occur prior to failure. Stress drop amplitudes range from 0.1 to 3.1 MPa (or 4-49% of the failure strength). We study the effects of loading rate (0.5 to 300 µm/s) and normal load (5 and 10 MPa) on stress drop and stick-slip recurrence interval. At a given loading rate, there is a positive correlation between stress drop and recurrence interval, indicating nealing rates of ~4 MPa per decade increase in recurrence time. However, the combined data from all velocities show a lower rate, suggesting an apparent healing rate of ~1 MPa per decade increase in recurrence time. We find a consistent scaling between different loading rates when stress drop is compared to inter-event loading displacement. The data for all velocities delineate a single trend and show larger stress drops for greater pre-failure loading displacement. Failure strength and post-slip stress levels converge with increasing velocity. Our data indicate that stress drop and post-seismic stress levels depend on loading rate and recurrence interval in a complex way.

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SN - 9780875909783

T3 - Geophysical Monograph Series

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EP - 198

BT - Geocomplexity and the Physics of Earthquakes, 2000

A2 - Turcotte, Donald L.

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PB - Blackwell Publishing Ltd

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Karner SL, Marone CJ. Effects of loading rate and normal stress on stress drop and stick-slip recurrence interval. In Turcotte DL, Klein W, Rundle JB, editors, Geocomplexity and the Physics of Earthquakes, 2000. Blackwell Publishing Ltd. 2000. p. 187-198. (Geophysical Monograph Series). https://doi.org/10.1029/GM120p0187