PANGAEA_934272 Friction velocity dependence of sediments from the Nankai Trough, Japan Okuda, Hanaya; Ikari, Matt J; Roesner, Alexander; Stanislowski, Katja; Hüpers, Andre; Kopf, Achim J; Yamaguchi, Asuka Friction velocity dependence of sediments from the Nankai Trough, Japan 2021-07-30 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.934272 Earth Science geoscientificInformation 315-C0002B 316-C0006E 316-C0006F 322-C0011B 358-C0002T Drilling/drill rig earthquake Exp315 Exp316 Exp322 Exp358 fault friction Nankai Trough Chikyu 2007-12-29 2008-01-07 Complete 32.828948333333 33.30845 136.6367083 136.88179 IODP Integrated Ocean Drilling Program / International Ocean Discovery Program KAKENHI JSPS KAKENHI access rights needed UNKNOWN: Licensing unknown: Please contact principal investigator/authors to gain access and request licensing terms English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 6.9 kBytes text/plain Okuda, Hanaya; Ikari, Matt J; Roesner, Alexander; Stanislowski, Katja; Hüpers, Andre; Kopf, Achim J; Yamaguchi, Asuka: Version 2 - Friction velocity dependence of sediments from the Nankai Trough, Japan [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.963927 (2. Version) Okuda, Hanaya; Ikari, Matt J; Roesner, Alexander; Stanislowski, Katja; Hüpers, Andre; Yamaguchi, Asuka; Kopf, Achim J (2021): Spatial Patterns in Frictional Behavior of Sediments Along the Kumano Transect in the Nankai Trough. Journal of Geophysical Research: Solid Earth, 126(11), e2021JB022546, https://doi.org/10.1029/2021JB022546

To investigate frictional behavior of sediments along the Kumano transect in the Nankai Trough, Japan, friction experiments were conducted using a single-direct shear device at MARUM, University of Bremen under room temperature conditions with 3.5% simulated seawater. Intact sediment cores from the input, prism toe, and inner prism sites collected by the IODP NanTroSEIZE project were tested. In this dataset, parameters of the rate- and state-dependent friction law for each sample were reported, which were obtained by the velocity step tests from 0.01 to 30 μm/sec. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.934272"! ** File descriptions: There are 12 parameters: mu0: steady-state friction coefficient before the velocity step (dimensionless) k: stiffness (1/μm) k_std: 1-sigma standard deviation of k (1/μm) a: parameter for direct effect (dimensionless) a_std: 1-sigma standard deviation of a (dimensionless) b: parameter for evolutionary effect (dimensionless) b_std: 1-sigma standard deviation of b (dimensionless) dc: parameter for evolutionary effect (μm) dc_std: 1-sigma standard deviation of dc (μm) a_minus_b: difference between a and b (dimensionless) a_minus_b_std: 1-sigma standard deviation of a_minus_b (dimensionless) R_squared: coefficient of determination (dimensionless) determined for 7 velocity stepping conditions of: velocity before step 0.01 μm/sec to velocity after step 0.03 μm/sec velocity before step 0.03 μm/sec to velocity after step 0.1 μm/sec velocity before step 0.1 μm/sec to velocity after step 0.3 μm/sec velocity before step 0.3 μm/sec to velocity after step 1 μm/sec (no data for C0011B 25R-1) velocity before step 1 μm/sec to velocity after step 3 μm/sec (no data for C0011B 25R-1) velocity before step 3 μm/sec to velocity after step 10 μm/sec (no data for C0011B 25R-1) velocity before step 10 μm/sec to velocity after step 30 μm/sec 8 samples along the Kumano transect in the Nankai Trough, Japan, were used: C0011B 25R-1 (IODP Exp. 322, Lat: 32°49.7369′N, Lon: 136°52.9074′E, Depth: 539.79 mbsf) C0011B 8R-3 (IODP Exp. 322, Lat: 32°49.7369′N, Lon: 136°52.9074′E, Depth: 405.57 mbsf) C0006F 19R-1 (IODP Exp. 316, Lat: 33°01.6242′N, Lon: 136°47.6282′E, Depth: 562.67 mbsf) C0006E 36X-1 (IODP Exp. 316, Lat: 33°01.6444′N, Lon: 136°47.6282′E, Depth: 277.54 mbsf) C0011B 55R-5 (IODP Exp. 322, Lat: 32°49.7369′N, Lon: 136°52.9074′E, Depth: 781.80 mbsf) C0006E 12H-3 (IODP Exp. 316, Lat: 33°01.6444′N, Lon: 136°47.6282′E, Depth: 72.80 mbsf) C0002B 63R-1 (IODP Exp. 315, Lat: 33°17.9928′N, Lon: 136°38.2029′E, Depth: 1033.80 mbsf) C0002T 2K-1 (IODP Exp. 358, Lat: 33°18.5070′N, Lon: 136°38.2025′E, Depth: 2840.54 mbsf) We fitted the aging-law type rate- and state-dependent friction law (Dieterich, 1979) to the experimental data using RSFit3000 (Skarbek & Savage, 2019) to obtain these parameters. Experimental data were obtained using the single-direct shear device at MARUM, University of Bremen, Germany.

https://doi.org/10.1029/2021JB022546 Spatial Patterns in Frictional Behavior of Sediments Along the Kumano Transect in the Nankai Trough https://doi.pangaea.de/10.1594/PANGAEA.963927 Version 2 - Friction velocity dependence of sediments from the Nankai Trough, Japan https://en.wikipedia.org/wiki/Chiky%C5%AB Chikyu https://www.iodp.org/ IODP https://www.jsps.go.jp/english/e-grants/ KAKENHI DIF 9.4 2021-07-30 2026-04-30