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Stoepke, Fiene; Ikari, Matt J; Morgan, Julia K; Urlaub, Morelia (2025): Results of direct shear experiments on intact and powdered samples from the submarine flank of Kilauea volcano (Hawaii, USA): Inverse Modeling Results (Aging Law) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.985072, In: Stoepke, F et al. (2025): Results of direct shear experiments on intact and powdered samples from the submarine flank of Kilauea volcano (Hawaii, USA) [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.985068

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Published: 2025-10-15 • DOI registered: 2025-11-13

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Abstract:
We performed laboratory friction experiments on simulated fault gouges and intact samples from the submarine flank of Kilauea volcano (Hawaii, USA) and measured the velocity-dependence of friction in velocity-step tests. Moreover, we have directly measured cohesion on the fault gouge and intact samples from Kilauea's submarine flank. The experiments were carried out using a single-direct shear device at room temperature. For the shearing tests, the samples simulating fault gouge were crushed and sieved to a grain size of < 125 µm. The intact samples were tested as mini-cores. All experiments were carried out under fluid-saturated conditions (3.5 % NaCl brine) and under an effective normal load of 10 MPa.
Keyword(s):
cohesion; Direct Shear; Laboratory experiment; rate-and-state friction
Funding:
European Research Council (ERC), grant/award no. 948797: Slow sliding of volcanic flanks as PREcursor to catastrophic COLLAPSE
Coverage:
Latitude: 19.115939 * Longitude: -155.039383
Date/Time Start: 1998-01-01T00:00:00 * Date/Time End: 2001-01-01T00:00:00
Minimum Elevation: -2400.0 m * Maximum Elevation: -2400.0 m
Event(s):
Kilauea_Volcano * Latitude: 19.115939 * Longitude: -155.039383 * Date/Time Start: 1998-01-01T00:00:00 * Date/Time End: 2001-01-01T00:00:00 * Elevation: -2400.0 m * Method/Device: Submersible (SUB)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Type of studyStudy typeStoepke, Fiene
2ExperimentExpStoepke, Fiene
3Sliding velocity, initialV initµm/sStoepke, FienePotentiometric displacement sensor, Burster, 8712
4Sliding velocity, finalV finalµm/sStoepke, FienePotentiometric displacement sensor, Burster, 8712
5Initial friction coefficientµ0Stoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
6Initial friction coefficient, standard deviationmu std dev±Stoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
7Friction direct effectaStoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
8Friction direct effect, standard deviationa std dev±Stoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
9Friction evolutionary effect, b1b1Stoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
10Friction evolutionary effect b1, standard deviationb1 std dev±Stoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
11Friction evolutionary effect, b2b2Stoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
12Friction evolutionary effect b2, standard deviationb2 std dev±Stoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
13Critical slip distance dc1dc1µmStoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
14Critical slip distance dc1, standard deviationdc1 std dev±Stoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
15Critical slip distance dc2dc2µmStoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
16Critical slip distance dc2, standard deviationdc2 std dev±Stoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
17StiffnessStiff1/µmStoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
18Stiffness, standard deviationStiff std dev±Stoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
19SumSumStoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)SSRes: sum of squared residuals
20Sum of evolution coefficients (b1+b2)Sum bStoepke, FieneMatlab code RSFit3000, according to Skarbek and Savage (2019)
21Velocity-dependent friction parametera-bStoepke, Fienedifference in parameters a and ∑b
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
3039 data points

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