4. Seismology

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  1. Full paper

    Deriving amplification factors from simple site parameters using generalized regression neural networks: implications for relevant site proxies

    Most modern seismic codes account for site effects using an amplification factor (AF) that modifies the rock acceleration response spectra in relation to a “site condition proxy,” i.e., a parameter related to ...

    Ahmed Boudghene Stambouli, Djawad Zendagui, Pierre-Yves Bard and Boumédiène Derras

    Earth, Planets and Space 2017 69:99

    Published on: 24 July 2017

  2. Full paper

    Variations in seismic velocity distribution along the Ryukyu (Nansei-Shoto) Trench subduction zone at the northwestern end of the Philippine Sea plate

    The Ryukyu (Nansei-Shoto) island arc-trench system, southwest of Japan, is formed by the subduction of the Philippine Sea (PHS) plate. Among the subduction zones surrounding the Japan Islands, the Ryukyu arc-t...

    Azusa Nishizawa, Kentaro Kaneda, Mitsuhiro Oikawa, Daishi Horiuchi, Yukari Fujioka and Chiaki Okada

    Earth, Planets and Space 2017 69:86

    Published on: 29 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. Express Letter

    Recovery process of shear wave velocities of volcanic soil in central Mashiki Town after the 2016 Kumamoto earthquake revealed by intermittent measurements of microtremor

    An earthquake of JMA magnitude 6.5 (foreshock) hit Kumamoto Prefecture, Japan, at 21:26 JST on April 14, 2016. Subsequently, an earthquake of JMA magnitude 7.3 (main shock) hit Kumamoto and Oita Prefectures a...

    Yoshiya Hata, Masayuki Yoshimi, Hiroyuki Goto, Takashi Hosoya, Hitoshi Morikawa and Takao Kagawa

    Earth, Planets and Space 2017 69:72

    Published on: 22 May 2017

  5. Frontier letter

    Quasi-Cartesian finite-difference computation of seismic wave propagation for a three-dimensional sub-global model

    A simple and efficient finite-difference scheme is developed to calculate seismic wave propagation in a partial spherical shell model of a three-dimensionally (3-D) heterogeneous global Earth structure for mod...

    Hiroshi Takenaka, Masanao Komatsu, Genti Toyokuni, Takeshi Nakamura and Taro Okamoto

    Earth, Planets and Space 2017 69:67

    Published on: 12 May 2017

  6. Full paper

    Using ambient vibration measurements for risk assessment at an urban scale: from numerical proof of concept to Beirut case study (Lebanon)

    Post-seismic investigations repeatedly indicate that structures having frequencies close to foundation soil frequencies exhibit significantly heavier damages (Caracas 1967; Mexico 1985; Pujili, Ecuador 1996; L...

    Christelle Salameh, Pierre-Yves Bard, Bertrand Guillier, Jacques Harb, Cécile Cornou, Jocelyne Gérard and Michelle Almakari

    Earth, Planets and Space 2017 69:60

    Published on: 26 April 2017

  7. 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

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