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Subduction-zone megathrust earthquakes: New perspectives from insitu data & laboratory analyses

In the last decade or two, an enormous amount of new findings has been gained about activities and characteristics of seismogenic zones. They include a variety of phenomena along subduction zone megathrusts, ranging from creep to earthquakes including slow earthquakes surrounding the locked zone, high-velocity slip and low frictional strength. 
In this SPEPS article collection, we invite authors to contribute innovative research or reviews on subduction zone megathrusts, both in presently active ones and onland outcrops. The approaches may include, but are not limited to, results from a wide range of disciplines including observational geodesy and seismology, geological and geophysical studies of present and ancient subduction zones, borehole logging and monitoring, laboratory experiments, and theoretical and numerical modeling.

  1. Content type: Research article

    Noble gas abundance and isotope data from 12 drilling mud gas samples obtained during IODP Expeditions 338 and 348 provide new insights on fluid origin and fluid migration in the inner accretionary prism below...

    Authors: Thomas Wiersberg, Sebastian B. Hammerschmidt, Shigeshi Fuchida, Achim Kopf and Jörg Erzinger

    Citation: Progress in Earth and Planetary Science 2018 5:79

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  2. Content type: Research article

    Ocean drilling in the Nankai Trough forearc suggests a new scenario for the evolution of the Nankai subduction zone. Continuous subduction since the Late Cretaceous has been a common tectonic scenario, althoug...

    Authors: Gaku Kimura, Hiroaki Koge and Takeshi Tsuji

    Citation: Progress in Earth and Planetary Science 2018 5:78

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  3. Content type: Research article

    The study investigates the in-situ strength of sediments across a plate boundary décollement using drilling parameters recorded when a 1180-m-deep borehole was established during International Ocean Discovery ...

    Authors: Yohei Hamada, Takehiro Hirose, Akira Ijiri, Yasuhiro Yamada, Yoshinori Sanada, Saneatsu Saito, Noriaki Sakurai, Takamitsu Sugihara, Takahiro Yokoyama, Tomokazu Saruhashi, Tatsuhiko Hoshino, Nana Kamiya, Stephen Bowden, Margaret Cramm, Susann Henkel, Kira Homola…

    Citation: Progress in Earth and Planetary Science 2018 5:70

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  4. Content type: Research article

    The 2011 Tohoku-oki earthquake unexpectedly ruptured to the shallowest portion of the plate boundary fault and triggered a large tsunami. The shallow portion had generally been regarded as a seismically stable...

    Authors: Hiroaki Koge, Yasuhiro Yamada, Akihiro Ohde, Arthur Bauville, Asuka Yamaguchi and Juichiro Ashi

    Citation: Progress in Earth and Planetary Science 2018 5:69

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  5. Content type: Research article

    Three-dimensional (3D) seismic data from the southern Kumano Basin of southwest Japan image a nested series of moderately sized mass transport deposits (MTDs) that slid from a slope along the seaward side of t...

    Authors: Jason Lackey, Gregory Moore and Michael Strasser

    Citation: Progress in Earth and Planetary Science 2018 5:65

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  6. Content type: Research article

    The Nankai subduction zone off the Kii Peninsula, Japan, has a large potential to generate megathrust earthquakes in the near future. To investigate the temporal variation of stress or strain in the Nankai sub...

    Authors: Tatsunori Ikeda and Takeshi Tsuji

    Citation: Progress in Earth and Planetary Science 2018 5:62

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  7. Content type: Research article

    We examined the temporal changes in the internal stresses and pore fluid pressures of a submarine mass transport deposit (MTD) in the Akkeshi Formation of the Upper Cretaceous–Paleocene Nemuro Group, eastern H...

    Authors: Makoto Otsubo, Hajime Naruse and Ayumu Miyakawa

    Citation: Progress in Earth and Planetary Science 2018 5:59

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  8. Content type: Research article

    Megathrust earthquakes have occurred repeatedly at intervals of 100 to 150 years along the Nankai Trough, situated in the southwest of Japan. Given that it has been 70 years since the last event, the occurrenc...

    Authors: Masaru Nakano, Mamoru Hyodo, Ayako Nakanishi, Mikiya Yamashita, Takane Hori, Shin-ichiro Kamiya, Kensuke Suzuki, Takashi Tonegawa, Shuichi Kodaira, Narumi Takahashi and Yoshiyuki Kaneda

    Citation: Progress in Earth and Planetary Science 2018 5:30

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