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Metadata Files

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)

Descriptions

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
Seismotectonic modeling
Analog Modeling
Digital Image Correlation (DIC)
Particle Image Velocimetry (PIV)
EPOS
multi-scale laboratories
analogue models of geologic processes
analogue modelling results
EARTH SCIENCE &gt; SOLID EARTH &gt; GEOMORPHIC LANDFORMS/PROCESSES &gt; TECTONIC PROCESSES
EARTH SCIENCE &gt; SOLID EARTH &gt; GEOMORPHIC LANDFORMS/PROCESSES &gt; TECTONIC PROCESSES &gt; SUBDUCTION
EARTH SCIENCE &gt; SOLID EARTH &gt; GEOMORPHIC LANDFORMS/PROCESSES &gt; TECTONIC PROCESSES &gt; TECTONIC UPLIFT
EARTH SCIENCE &gt; SOLID EARTH &gt; TECTONICS &gt; EARTHQUAKES

Corresponding MSL vocabulary keywords
analogue modelling
digital image correlation (DIC)
particle image velocimetry (PIV)

MSL enriched keywords
Apparatus
analogue modelling
Software
digital image correlation (DIC)
particle image velocimetry (PIV)
Measured property
strain
Measured property
strain
tectonic plate boundary
convergent tectonic plate boundary
subduction
subducting plate interface
tectonic deformation structure
tectonic fault
thrust fault
unconsolidated sediment
clastic sediment
sand
analogue modelling material
elastic modelling material
natural elastic material
natural rubber
Apparatus
deformation testing
shear testing
friction - controlled slip rate
rate and state friction (RSF) parameters
Inferred deformation behavior
deformation behaviour
frictional deformation
Ancillary equipment
model surface monitoring (2D)
camera
friction - controlled slip rate
rate and state friction (RSF) parameters
trench

MSL enriched sub domains i

analogue modelling of geologic processes
rock and melt physics

Source

https://dataservices.gfz-potsdam.de/panmetaworks/showshort.php?id=8adcaa43-fa4c-11ed-95b8-f851ad6d1e4b

Source publisher

GFZ Data Services


DOI

10.5880/gfz.4.1.2023.005


Creators

Kosari, Ehsan

GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0002-1052-4997

Rosenau, Matthias

GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0003-1134-5381

Metzger, Sabrina

GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0002-0803-6599

Oncken, Onno

GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0002-2894-480X


Contributors

Kosari, Ehsan

ContactPerson

GFZ German Research Centre for Geosciences, Potsdam, Germany

ORCID:

https://orcid.org/0000-0002-1052-4997

HelTec-Helmholtz Laboratory For Tectonic Modelling (GFZ German Research Centre For Geosciences, Germany)

HostingInstitution

GFZ German Research Centre for Geosciences, Potsdam, Germany

labid:

9ba34c109b827b177aab36e0266b1643

Kosari, Ehsan

ContactPerson

GFZ German Research Centre for Geosciences, Potsdam, Germany

Rosenau, Matthias

ContactPerson

GFZ German Research Centre for Geosciences, Potsdam, Germany


References

10.1130/g51115.1

10.1016/j.jsg.2004.08.008

10.1029/2020gl088266

10.1029/2021tc007099

10.5194/se-8-597-2017

10.1029/2018jb016597


Citation

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


Dates

Issued:

2023


Rights

Creative Commons Attribution 4.0 International