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Data Publication
Surface displacement and strain data from laboratory subduction megathrust earthquake cycles
Kosari, Ehsan | Rosenau, Matthias | Metzger, Sabrina | Oncken, Onno
GFZ Data Services
(2023)
This data set is digital image correlation data, including surface displacement and strain data from laboratory subduction megathrust earthquake cycles. The data consists of grids of surface strain (elastic and permanent), trench-normal surface displacement, vorticity and divergence maps over analog seismic cycles, and time series of surface displacement. The data have been derived using a stereo camera setup and processed with LaVision Davis 10 software. Detailed descriptions of the experiments and results regarding the surface pattern of the strain can be found in Kosari et al. (2023), to which this data set is supplementary. We use three configurations to mimic the along-strike heterogeneous spatiotemporal distribution of frictional locking (Rosenau et al., 2019; Kosari et al., 2022b). A central patch separates two stick-slip zones as an aseismic barrier in all configurations. The frictional properties of the central patch vary as a velocity-strengthening (VS configuration), a velocity-neutral (VN), and a velocity-weakening (VW configuration). The VW zone generates smaller slip events with a higher frequency (i.e., recurrence interval) than the stick-slip zones. Four frictionally different materials have been emplaced on the interface: The sticky-rice as velocity-weakening material (a-b<0) resulting in stick-slip cycles simulating earthquake cycles, fine-grained sugar and rubber-sand mixture as velocity-strengthening (a-b>0) and velocity-neutral (a-b=0) material, and fine-grained salt as velocity-weakening material (a-b<0) (Kosari et al., 2023).
Keywords
Originally assigned keywords
Corresponding MSL vocabulary keywords
MSL enriched keywords
MSL original sub domains
MSL enriched sub domains i
Source publisher
GFZ Data Services
DOI
10.5880/GFZ.4.1.2023.005
Authors
Kosari, Ehsan
0000-0002-1052-4997
GFZ German Research Centre for Geosciences, Potsdam, Germany
Rosenau, Matthias
0000-0003-1134-5381
GFZ German Research Centre for Geosciences, Potsdam, Germany
Metzger, Sabrina
0000-0002-0803-6599
GFZ German Research Centre for Geosciences, Potsdam, Germany
Oncken, Onno
0000-0002-2894-480X
GFZ German Research Centre for Geosciences, Potsdam, Germany
References
Kosari, E., Rosenau, M., Metzger, S., & Oncken, O. (2023). Along-strike seismotectonic segmentation reflecting megathrust seismogenic behavior. Geology, 51(8), 707–712. https://doi.org/10.1130/g51115.1
10.1130/G51115.1
IsSupplementTo
Adam, J., Urai, J. L., Wieneke, B., Oncken, O., Pfeiffer, K., Kukowski, N., Lohrmann, J., Hoth, S., van der Zee, W., & Schmatz, J. (2005). Shear localisation and strain distribution during tectonic faulting—new insights from granular-flow experiments and high-resolution optical image correlation techniques. Journal of Structural Geology, 27(2), 283–301. https://doi.org/10.1016/j.jsg.2004.08.008
10.1016/j.jsg.2004.08.008
Cites
Kosari, E., Rosenau, M., Bedford, J., Rudolf, M., & Oncken, O. (2020). On the Relationship Between Offshore Geodetic Coverage and Slip Model Uncertainty: Analog Megathrust Earthquake Case Studies. Geophysical Research Letters, 47(15). Portico. https://doi.org/10.1029/2020gl088266
10.1029/2020GL088266
Cites
Kosari, E., Rosenau, M., & Oncken, O. (2022). Strain Signals Governed by Frictional‐Elastoplastic Interaction of the Upper Plate and Shallow Subduction Megathrust Interface Over Seismic Cycles. Tectonics, 41(5). Portico. https://doi.org/10.1029/2021tc007099
10.1029/2021TC007099
Cites
Rosenau, M., Corbi, F., & Dominguez, S. (2017). Analogue earthquakes and seismic cycles: experimental modelling across timescales. Solid Earth, 8(3), 597–635. https://doi.org/10.5194/se-8-597-2017
10.5194/se-8-597-2017
Cites
Rosenau, M., Horenko, I., Corbi, F., Rudolf, M., Kornhuber, R., & Oncken, O. (2019). Synchronization of Great Subduction Megathrust Earthquakes: Insights From Scale Model Analysis. Journal of Geophysical Research: Solid Earth, 124(4), 3646–3661. Portico. https://doi.org/10.1029/2018jb016597
10.1029/2018JB016597
Cites
Contact
Kosari, Ehsan
ehsan.kosari@gfz-potsdam.de
GFZ German Research Centre for Geosciences, Potsdam, Germany
Rosenau, Matthias
rosen@gfz-potsdam.de
GFZ German Research Centre for Geosciences, Potsdam, Germany
Citiation
Kosari, E., Rosenau, M., Metzger, S., & Oncken, O. (2023). Surface displacement and strain data from laboratory subduction megathrust earthquake cycles [Data set]. GFZ Data Services. https://doi.org/10.5880/GFZ.4.1.2023.005