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Crustal Dynamics: Unified Understanding of Geodynamics Processes at Different Time and Length Scales

Edited by: Yoshihisa Iio, Richard H. Sibson, Toru Takeshita, Takeshi Sagiya, Bunichiro Shibazaki, Junichi Nakajima

The 2011 Tohoku-oki earthquake occurred on an unexpected scale, which made us realize that the generation mechanisms of earthquakes are poorly understood. To provide a unified view of the geodynamic processes including earthquake generation processes in the Japanese arc–trench system, it is necessary to clarify the absolute values of crustal stresses, the stress–strain field, and the basic properties of the island arc crust and mantle, such as viscosity and frictional coefficients along major faults. This special issue covers all disciplines concerning the crustal dynamics of arc–trench systems and other tectonic settings: seismic and geodetic observations, geomorphology, natural and experimental rock deformation research, geofluids, and numerical simulations of crustal deformation and earthquake generation.

  1. Full paper

    Dynamic rupture propagation on geometrically complex fault with along-strike variation of fault maturity: insights from the 2014 Northern Nagano earthquake

    Understanding the effect of the complex fault geometry on the dynamic rupture process and discriminating it from the complexity originating from the rheological properties of faults, is an essential subject in...

    Ryosuke Ando, Kazutoshi Imanishi, Yannis Panayotopoulos and Tomokazu Kobayashi

    Earth, Planets and Space 2017 69:130

    Published on: 18 September 2017

  2. Express Letter

    San-in shear zone in southwest Japan, revealed by GNSS observations

    A right-lateral shear zone in the San-in region, southwest Japan, has been proposed by previous geological and seismological studies. It locates 350 km north of the Nankai Trough, that is, the main plate bound...

    Takuya Nishimura and Youichiro Takada

    Earth, Planets and Space 2017 69:85

    Published on: 27 June 2017

  3. Express Letter

    Spatial variation in coda Q in the northeastern part of Niigata–Kobe Tectonic Zone, central Japan: implication of the cause of a high strain rate zone

    We have analyzed the spatial variation in coda Q in the northeastern part of a high strain rate zone, the Niigata–Kobe Tectonic Zone (NKTZ), to investigate the cause of the high strain rate by correlating coda Q ...

    Masanobu Dojo and Yoshihiro Hiramatsu

    Earth, Planets and Space 2017 69:76

    Published on: 5 June 2017

  4. Full paper

    Alteration and dehydration of subducting oceanic crust within subduction zones: implications for décollement step-down and plate-boundary seismogenesis

    The alteration and dehydration of predominantly basaltic subducting oceanic crustal material are thought to be important controls on the mechanical and hydrological properties of the seismogenic plate interfac...

    Jun Kameda, Sayako Inoue, Wataru Tanikawa, Asuka Yamaguchi, Yohei Hamada, Yoshitaka Hashimoto and Gaku Kimura

    Earth, Planets and Space 2017 69:52

    Published on: 18 April 2017

  5. Express Letter

    Anelastic properties beneath the Niigata–Kobe Tectonic Zone, Japan

    We estimate the three-dimensional (3D) P-wave attenuation structure beneath the Niigata–Kobe Tectonic Zone (NKTZ), central Japan, using high-quality waveform data from a large number of stations. The obtained ...

    Junichi Nakajima and Toru Matsuzawa

    Earth, Planets and Space 2017 69:33

    Published on: 22 February 2017