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Stanislowski, Katja; Ikari, Matt J (2025): Frictional behavior of input sediment to the Sumatra subduction zone from IODP Site 362-U1480 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.966244

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Published: 2025-09-18 • DOI registered: 2025-10-16

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Abstract:
We report on laboratory friction experiments measuring the frictional behavior of the input sediments offshore northern Sumatra, sampled during IODP Expedition 362. We performed laboratory friction experiments on eight different samples from the targeted depth interval in a GIESA RS5 single-direct shear device at room temperature, in-situ effective normal stresses, and under saturation with simulated seawater. The results show that the North Sumatra subduction zone input sediments which have been correlated with the protodécollement horizon are frictionally unstable, and also frictionally weak. Our results provide an explanation for shallow earthquake slip at Sumatra.
Keyword(s):
earthquake; friction; rate-and-state; seismogenesis; subduction zone input
Supplement to:
Stanislowski, Katja; Hüpers, Andre; Fagereng, Åke; Ikari, Matt J (2025): Weak, frictionally unstable input sediments explain shallow seismogenesis at the north Sumatran subduction zone. Geology, 53(4), 360-364, https://doi.org/10.1130/G52910.1
Project(s):
Integrated Ocean Drilling Program / International Ocean Discovery Program (IODP)
Funding:
European Research Council (ERC), grant/award no. 714430: Plate-rate experimental deformation: Aseismic, transient or seismic fault slip
Coverage:
Latitude: 3.034250 * Longitude: 91.605617
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
7 datasets

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Datasets listed in this bundled publication

  1. Stanislowski, K; Ikari, MJ (2025): Sample details of IODP Hole 362-U1480G (Table 1). https://doi.org/10.1594/PANGAEA.966013
  2. Stanislowski, K; Ikari, MJ (2025): Friction experiment details and measurements of samples from IODP Hole 362-U1480G (Table 2). https://doi.org/10.1594/PANGAEA.966065
  3. Stanislowski, K; Ikari, MJ (2025): Cohesion experiment details and measurements of samples from IODP Hole 362-U1480G (Table 3). https://doi.org/10.1594/PANGAEA.966083
  4. Stanislowski, K; Ikari, MJ (2025): Velocity-dependent friction measurements, input parameters for forward modeling of samples from IODP Hole 362-U1480G (Table 4). https://doi.org/10.1594/PANGAEA.966099
  5. Stanislowski, K; Ikari, MJ (2025): Velocity-dependent friction measurements, inverse modeling results (aging law) of samples from IODP Hole 362-U1480G (Table 5). https://doi.org/10.1594/PANGAEA.966178
  6. Stanislowski, K; Ikari, MJ (2025): Stick-slip details of samples from IODP Hole 362-U1480G (Table 6). https://doi.org/10.1594/PANGAEA.966215
  7. Stanislowski, K; Ikari, MJ (2025): Side friction correction factors of samples from IODP Hole 362-U1480G (Table 7). https://doi.org/10.1594/PANGAEA.966216