Hiroyuki Kumagai

Overview

Best Publications

• Acoustic properties of a crack containing magmatic or hydrothermal fluids

  Hiroyuki Kumagai;Bernard A. Chouet

  227
  Citations

• Very-Long-Period Seismic Signals and Caldera Formation at Miyake Island, Japan

  Hiroyuki Kumagai;Takao Ohminato;Masaru Nakano;Masahiro Ooi

  223
  Citations

• The complex frequencies of long‐period seismic events as probes of fluid composition beneath volcanoes

  Hiroyuki Kumagai;Hiroyuki Kumagai;Bernard A. Chouet

  152
  Citations

• Source mechanism of long-period events at Kusatsu–Shirane Volcano, Japan, inferred from waveform inversion of the effective excitation functions

  Masaru Nakano;Hiroyuki Kumagai;Bernard A. Chouet

  134
  Citations

• Broadband seismic monitoring of active volcanoes using deterministic and stochastic approaches

  Hiroyuki Kumagai;Masaru Nakano;Takuto Maeda;Hugo Yepes

  134
  Citations

• Temporal evolution of a hydrothermal system in Kusatsu-Shirane Volcano, Japan, inferred from the complex frequencies of long-period events

  Hiroyuki Kumagai;Bernard A. Chouet;Masaru Nakano

  118
  Citations

• Dynamic landslide processes revealed by broadband seismic records

  Masumi Yamada;Hiroyuki Kumagai;Yuki Matsushi;Takanori Matsuzawa

  113
  Citations

• Detection of landslides and submarine slumps using broadband seismic networks

  C. H. Lin;H. Kumagai;M. Ando;T. C. Shin

  101
  Citations

• Waveform inversion of oscillatory signatures in long‐period events beneath volcanoes

  Hiroyuki Kumagai;Bernard A. Chouet;Masaru Nakano

  92
  Citations

• Source process of a long-period event at Kilauea volcano, Hawaii

  Hiroyuki Kumagai;Bernard A. Chouet;Phillip B. Dawson

  90
  Citations

• Waveform inversion in the frequency domain for the simultaneous determination of earthquake source mechanism and moment function

  M. Nakano;H. Kumagai;H. Inoue

  90
  Citations

• Seismic tracking of lahars using tremor signals

  Hiroyuki Kumagai;Pablo Palacios;Takuto Maeda;Diego Barba Castillo

  89
  Citations

• Vulcanian eruptions with dominant single force components observed during the Asama 2004 volcanic activity in Japan

  Takao Ohminato;Minoru Takeo;Hiroyuki Kumagai;Tadashi Yamashina

  89
  Citations

• The excitation and characteristic frequency of the long-period volcanic event: An approach based on an inhomogeneous autoregressive model of a linear dynamic system

  Masaru Nakano;Hiroyuki Kumagai;Mineo Kumazawa;Koshun Yamaoka

  87
  Citations

• The dependence of acoustic properties of a crack on the resonance mode and geometry

  Hiroyuki Kumagai;Bernard A. Chouet

  86
  Citations

• Time sequence and the recurrence models for large earthquakes along the Nankai Trough revisited

  Hiroyuki Kumagai

  83
  Citations

• Magmatic dike resonances inferred from very-long-period seismic signals.

  Hiroyuki Kumagai;Koji Miyakawa;Hiroaki Negishi;Hiroshi Inoue

  80
  Citations

• Source mechanism of a very-long-period event at Mt Ontake, central Japan: Response of a hydrothermal system to magma intrusion beneath the summit

  Haruhisa Nakamichi;Hiroyuki Kumagai;Masaru Nakano;Makoto Okubo

  78
  Citations

• Resonances of a volcanic conduit triggered by repetitive injections of an ash‐laden gas

  Indira Molina;Hiroyuki Kumagai;Hugo Yepes

  73
  Citations

• Three-dimensional P-wave velocity structure of Tungurahua Volcano, Ecuador

  Indira Molina;Hiroyuki Kumagai;Jean-Luc Le Pennec;Jean-Luc Le Pennec;Minard Hall

  67
  Citations

• Broadband seismic monitoring of active volcanoes using deterministic and stochastic approaches

  H. Kumagai;M. Nakano;T. Maeda;H. Yepes

  8
  Citations