Digital image correlation data from analogue subduction megathrust earthquakes addressing the control of geodetic coverage on coseismic slip inversion

Kosari, Ehsan; Rosenau, Matthias; Bedford, Jonathan; Rudolf, Michael; Oncken, Onno;

2022-05 || GFZ Data Services

This data set includes digital image correlation data from thirteen analogue earthquakes generated by means of an analogue seismotectonic scale model approach. The data consists of grids of 3D static coseismic surface displacements. The data have been derived using a stereo camera setup and processed with LaVision Davis 8 software. Detailed descriptions of the experiments and results regarding the control of geodetic coverage on the slip inversion problem can be found in Kosari et al. (2020) to which this data set is supplementary material.

We use an analogue seismotectonic scale model approach (Rosenau et al., 2017) to generate a catalogue of analogue megathrust earthquakes (Table 1). The presented experimental setup is modified from the 3D setup used in Rosenau et al. (2019).

To monitor surface deformation of the wedge analogue model a stereoscopic set of two CCD cameras (LaVision Imager pro X 11MPx, 14 bit) monitors images the wedge surface continuously at 2.5 Hz. To derive observational data similar to those from geodetic techniques, i.e. velocities at the location on the surface, we use digital image correlation (DIC, Adam et al., 2005) to derive the 3D incremental surface displacement (or velocity) at high spatial resolution (< 0.1 mm). The time series of incremental surface displacement data was calculated using LaVision Davis 8 software. The result is an evenly spaced grid of vectors per time step, oriented parallel with respect to the principal dimensions of the box.

Originally assigned keywords

Corresponding MSL vocabulary keywords

MSL enriched keywords

Originally assigned sub domains
  • analogue modelling of geologic processes
MSL enriched sub domains
  • analogue modelling of geologic processes
Source http://doi.org/10.5880/GFZ.4.1.2020.003
Source publisher GFZ Data Services
DOI 10.5880/GFZ.4.1.2020.003
License CC BY 4.0
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
  • Bedford, Jonathan
  • 0000-0002-8954-4367
  • GFZ German Research Centre for Geosciences, Potsdam, Germany
  • Rudolf, Michael
  • 0000-0002-5077-5221
  • 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., 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
  • 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
  • References
  • 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
  • References
  • 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
  • References
Contact
  • Rosenau, Matthias
  • GFZ German Research Centre for Geosciences, Potsdam, Germany
  • rosen@gfz-potsdam.de
Citation Kosari, E., Rosenau, M., Bedford, J., Rudolf, M., & Oncken, O. (2020). Digital image correlation data from analogue subduction megathrust earthquakes addressing the control of geodetic coverage on coseismic slip inversion [Data set]. GFZ Data Services. https://doi.org/10.5880/GFZ.4.1.2020.003