Articles | Volume 7, issue 5
Research article
21 Oct 2016
Research article |  | 21 Oct 2016

Improved finite-source inversion through joint measurements of rotational and translational ground motions: a numerical study

Michael Reinwald, Moritz Bernauer, Heiner Igel, and Stefanie Donner

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Cited articles

Aki, K. and Richards, P.: Quantitative seismology, vol. 1, University Science Books, 2002.
Bernauer, F., Wassermann, J., and Igel, H.: Rotational sensors—a comparison of different sensor types, J. Seismol., 16, 595–602, 2012.
Bernauer, M., Fichtner, A., and Igel, H.: Reducing nonuniqueness in finite source inversion using rotational ground motions, J. Geophys. Res.-Sol. Ea., 119, 4860–4875, 2014.
Brokešová, J. and Málek, J.: Rotaphone, a Self-Calibrated Six-Degree-of-Freedom Seismic Sensor and Its Strong-Motion Records, Seismol. Res. Lett., 84, 737–744, 2013.
Brokešová, J. and Málek, J.: Six-degree-of-freedom near-source seismic motions II: examples of real seismogram analysis and S-wave velocity retrieval, J. Seismol., 19, 511–539, 2015.
Short summary
The goal of this study is to test the effect of incorporating rotational ground motion data into finite-source inversions for different types of earthquakes. We run numerical simulations with and without rotation data and directly compare the results. They clearly suggest that seismological studies can benefit from the ability of seismometers to also measure rotational ground motions, especially for faults which also fracture in vertical direction.