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Volcanic Earthquakes and Tremor in Japan
235x156x18mm hardcover, 276 pages
ISBN: 9784876989799
pub. date: 02/11
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Japan's active volcanoes and eruptions have occurred in a variety of forms, including: violent explosive eruptive activity, such as that at Sakurajima volcano; lava dome eruptions at Mt. Unzen; basaltic magma ejections at Izu-Oshima; and caldera collapse at the Miyakejima volcanoes. Correspondingly, volcanic earthquakes and tremors exhibit a range of characteristics according to the varieties of volcanic eruptions. This book contains fundamental details required for understanding Japan's volcanic phenomena, based on analyses of earthquakes and tremors observed at active volcanoes. It outlines all the complicated processes, including observation, categorization, and generalized relations between eruptions and tremors. The book will serve as an entry level text for students who wish to learn about earthquake and tremor activity of volcanoes. It will also be a resource for researchers working in various volcano-related fields and volcano disaster prevention.
"THE LEADING EDGE",Vol.31. No.8., 973-974pp. (Society of Exploration Geophysicists)
Takeshi Nishimura
Associated professor, Department of Geophysics, Graduate School of Science, Tohoku University
Doctor of Science
He specializes seismology and physical volcanology, especially source process of volcanic earthquakes and dynamics of volcanic fluid motions.
Masato Iguchi
Associated professor, Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University
Doctor of Science
He specializes field geophysical volcanology, particularly at Sakurajima, island volcanoes in Kyushu, Japan and Indonesian volcanoes.
Associated professor, Department of Geophysics, Graduate School of Science, Tohoku University
Doctor of Science
He specializes seismology and physical volcanology, especially source process of volcanic earthquakes and dynamics of volcanic fluid motions.
Masato Iguchi
Associated professor, Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University
Doctor of Science
He specializes field geophysical volcanology, particularly at Sakurajima, island volcanoes in Kyushu, Japan and Indonesian volcanoes.
Source notes
Note on volcano names
Authors' Biography
Foreword
Chapter 1 Overview
Chapter 2 Observation Systems
2.1 The history of volcanic earthquake observation
Box 1 History of the establishment of volcano observatories
2.2 Present-day volcanic earthquake observation systems
2.3 Points of caution for earthquake observation at a volcano
Chapter 3 Classification of volcanic earthquakes and tremors
3.1 Introduction
3.2 Examples of observed waveforms
3.3 Naming and classification of volcanic earthquakes and tremors
3.4 Conclusion
Chapter 4 Source Regions
4.1 Introduction
4.2 Methods for locating the source region
4.3 Characteristics of hypocenter distributions
4.3.1 Hypocenter migration
Box 2 Relation of migration between hypocenter and magma
4.3.2 Shared and separate hypocenters
4.3.3 Repeated seismicity
4.4 Conclusion
Chapter 5 Source mechanisms
5.1 Introduction
5.2 Methods for evaluating source mechanisms
5.2.1 Analysis methods using first-motion polarities
5.2.2 Analysis methods using body wave amplitudes
Box 3 Explanation of the focal sphere
5.2.3 Moment tensor inversion method
5.2.4 Spectral structure method
5.3 Double-couple volcanic earthquakes
5.4 Non-double-couple volcanic earthquakes and tremors
5.4.1 Earthquakes and tremors occurring during non-eruptive periods
Box 4 Resonance mode of crack vibration and moment ratios
Box 5 Acoustic velocity of volcanic fluids
5.4.3 Earthquakes and tremors accompanying eruptions
5.5 Conclusion
Chapter 6 Seismic and volcanic activity
6.1 Introduction
6.2 Volcanic earthquake and tremor activity with eruptions recurring after periods of quiescence
6.3 Earthquake and tremor activity at volcanoes demonstrating continuous activity
6.4 Predicting the time of eruption
6.5 Activity of deep low-frequency earthquakes
Box 6 Deep low-frequency earthquake activity
6.6 Swarm-like features of volcanic earthquakes
Box 7 Large earthquakes occurring in the vicinity of volcanoes
6.7 Interaction between earthquakes and volcanic eruptions
6.8 Remotely triggered volcanic earthquakes
6.9 Frequencymagnitude distributions
6.10 Related phenomena
6.11 Conclusion
Chapter 7 Volcanic earthquakes and tremors observed at the principa lvolcanoes in Japan
7.1 Introduction
7.2 Mt. Tokachi (Tokachidake)
7.3 Mt. Usu (Usuzan)
7.4 Mt. Iwate (Iwatesan)
7.5 Mt. Asama (Asamayama)
7.6 Mt. Fuji (Fujisan)
7.7 Izu-Oshima (Izu-Oshima)
7.8 Miyakejima (Miyakejima)
7.9 Mt. Unzen (Unzendake)
7.10 Mt. Aso (Asosan)
7.11 Sakurajima (Sakurajima)
7.12 Suwanosejima (Suwanosejima)
7.13 Teishi Kaikyu in the Izu-Tobu Volcano Group (Izu-Tobu Volcanoes)
7.14 Other volcanoes
Mt. Meakan (Meakandake)
Mt. Tarumae (Tarumaesan)
Mt. Esan (Esan)
Mt. Hokkaido-Komagatake (Hokkaido-Komagatake)
Mt. Iwaki (Iwakisan)
Towada (Towada)
Mt. Akita-Komagatake (Akita-Komagatake)
Mt. Chokai (Chokaisan)
Mt. Zao (Zaozan)
Mt. Adatara (Adatarayama)
Mt. Bandai (Bandaisan)
Mt. Azuma (Azumayama)
Mt. Nasu (Nasudake)
Mt. Nikko-Shirane (Nikko-Shiranesan)
Mt. Kusatsu-Shirane (Kusatsu-Shiranesan)
Iwojima (Iojima, Ioto)
Mt. Ontake (Ontakesan)
Mt. Tsurumi (Tsurumidake)
Mt. Kuju (Kujusan)
Kirishima Volcano Complex (Kirishimayama)
Satsuma-Iwojima (Satsuma-Iojima)
Kuchinoerabujima (Kuchinoerabujima)
Index
Note on volcano names
Authors' Biography
Foreword
Chapter 1 Overview
Chapter 2 Observation Systems
2.1 The history of volcanic earthquake observation
Box 1 History of the establishment of volcano observatories
2.2 Present-day volcanic earthquake observation systems
2.3 Points of caution for earthquake observation at a volcano
Chapter 3 Classification of volcanic earthquakes and tremors
3.1 Introduction
3.2 Examples of observed waveforms
3.3 Naming and classification of volcanic earthquakes and tremors
3.4 Conclusion
Chapter 4 Source Regions
4.1 Introduction
4.2 Methods for locating the source region
4.3 Characteristics of hypocenter distributions
4.3.1 Hypocenter migration
Box 2 Relation of migration between hypocenter and magma
4.3.2 Shared and separate hypocenters
4.3.3 Repeated seismicity
4.4 Conclusion
Chapter 5 Source mechanisms
5.1 Introduction
5.2 Methods for evaluating source mechanisms
5.2.1 Analysis methods using first-motion polarities
5.2.2 Analysis methods using body wave amplitudes
Box 3 Explanation of the focal sphere
5.2.3 Moment tensor inversion method
5.2.4 Spectral structure method
5.3 Double-couple volcanic earthquakes
5.4 Non-double-couple volcanic earthquakes and tremors
5.4.1 Earthquakes and tremors occurring during non-eruptive periods
Box 4 Resonance mode of crack vibration and moment ratios
Box 5 Acoustic velocity of volcanic fluids
5.4.3 Earthquakes and tremors accompanying eruptions
5.5 Conclusion
Chapter 6 Seismic and volcanic activity
6.1 Introduction
6.2 Volcanic earthquake and tremor activity with eruptions recurring after periods of quiescence
6.3 Earthquake and tremor activity at volcanoes demonstrating continuous activity
6.4 Predicting the time of eruption
6.5 Activity of deep low-frequency earthquakes
Box 6 Deep low-frequency earthquake activity
6.6 Swarm-like features of volcanic earthquakes
Box 7 Large earthquakes occurring in the vicinity of volcanoes
6.7 Interaction between earthquakes and volcanic eruptions
6.8 Remotely triggered volcanic earthquakes
6.9 Frequencymagnitude distributions
6.10 Related phenomena
6.11 Conclusion
Chapter 7 Volcanic earthquakes and tremors observed at the principa lvolcanoes in Japan
7.1 Introduction
7.2 Mt. Tokachi (Tokachidake)
7.3 Mt. Usu (Usuzan)
7.4 Mt. Iwate (Iwatesan)
7.5 Mt. Asama (Asamayama)
7.6 Mt. Fuji (Fujisan)
7.7 Izu-Oshima (Izu-Oshima)
7.8 Miyakejima (Miyakejima)
7.9 Mt. Unzen (Unzendake)
7.10 Mt. Aso (Asosan)
7.11 Sakurajima (Sakurajima)
7.12 Suwanosejima (Suwanosejima)
7.13 Teishi Kaikyu in the Izu-Tobu Volcano Group (Izu-Tobu Volcanoes)
7.14 Other volcanoes
Mt. Meakan (Meakandake)
Mt. Tarumae (Tarumaesan)
Mt. Esan (Esan)
Mt. Hokkaido-Komagatake (Hokkaido-Komagatake)
Mt. Iwaki (Iwakisan)
Towada (Towada)
Mt. Akita-Komagatake (Akita-Komagatake)
Mt. Chokai (Chokaisan)
Mt. Zao (Zaozan)
Mt. Adatara (Adatarayama)
Mt. Bandai (Bandaisan)
Mt. Azuma (Azumayama)
Mt. Nasu (Nasudake)
Mt. Nikko-Shirane (Nikko-Shiranesan)
Mt. Kusatsu-Shirane (Kusatsu-Shiranesan)
Iwojima (Iojima, Ioto)
Mt. Ontake (Ontakesan)
Mt. Tsurumi (Tsurumidake)
Mt. Kuju (Kujusan)
Kirishima Volcano Complex (Kirishimayama)
Satsuma-Iwojima (Satsuma-Iojima)
Kuchinoerabujima (Kuchinoerabujima)
Index
Ordering information
