Volcanic Seismology

The contributions of this volume show results of topical studies to volcanic seismology and the methods used for detection. Volcanologists, seismologists and geologists will find information on active volcanic regions all over the world.

1 Introduction.- State of the Art in Volcanic Seismology.- 2 Seismic Activity and Other Precursors of Eruptions.- Short-Term Precursors of Natural Disastrous Events: A Statistical Assessment.- Deformation, Earthquakes and Mechanism of Activity of Klyuchevskoy Volcano.- Seismotectonics of the Mount Cameroon Volcanic Region, West Africa.- Volcanic Earthquakes at Merapi (Central Java) During the Lava Dome Building Beginning in October 1986.- Recent Seismicity at Vulcano Island (Southern Italy) and Adjacent Regions: Time Patterns and Periodicities.- Arenal Volcano (Costa Rica) Premonitory Seismicity.- Analysis of Seismic Activity Related to the 1982 Eruption of El Chichon Volcano, Mexico.- Coda Q Dependence on Time, Frequency and Coda Duration Interval at Mt. Etna, Sicily.- Measurements of Ground Movement on Mt. Etna, Sicily: A Systematic Plan to Record Different Temporal and Spatial Components of Ground Movement Associated with Active Volcanism.- 3 Modeling of Volcanic Earthquakes, Tremors and Long-Term Events.- A Seismic Model for the Source of Long-Period Events and Harmonic Tremor.- Volcanic Tremor: Seismic Signals of (Almost) Unknown Origin.- Preliminary Results from a Field Experiment on Volcanic Events at Kilauea Using an Array of Digital Seismographs.- Numerical Studies of the Dynamics of Fluid-Filled Cracks Placed in Series: A Model for Inharmonic Peaked Tremor Spectra.- Seismic Image of the Volcanic Tremor Source at Izu-Oshima Volcano, Japan.- Volcanic Tremor and Low-Frequency Earthquakes in Iceland.- Non-Double Couple Earthquake Focal Mechanisms and the Accretionary Tectonic Cycle.- Non-Double-Couple Earthquake Mechanisms in Volcanic Environments.- Nonlinear Inversion of S-Wave Polarization for Constraining the Source Mechanism of Small Earthquakes.- Seismic Activity at Stromboli (Southern Italy) for the Period 1983-1986.- Wave Polarization and Location of the Source of the Explosion Quakes at Stromboli Volcano.- 4 Tomography and Detection of Magma Chambers.- Seismological Detection and Delineation of Magma Chambers: Present Status with Emphasis on the Western USA.- Three-Dimensional Imaging of the Crust and Upper Mantle in the Long Valley-Mono Craters Region, California, Using Teleseismic P-Wave Residuals.- Three-Dimensional Inversion of Teleseismic Travel Time Residuals for Crust and Upper Mantle Velocity Structure in the Larderello Geothermal Field, Italy.- Physical Meaning of Coda Envelopes.- 5 Seismic Activity in Resurgent Calderas and Geothermal Fields.- Fracture Processes Induced by Forced Fluid Percolation.- Temperatures at the Base of the Seismogenetic Crust Beneath Long Valley Caldera, California, and the Phlegrean Fields, Caldera, Italy.- Seismic Investigation of the Campi Flegrei: A Summary and Synthesis of Results.- Seismological and Geodetic Data at Campi Flegrei (Southern Italy): Constraints on Volcanological Models.- Possibilities of Detecting Volcanic Seismic Sources at Campi Flegrei, Caldera.- Apparent Variation of Coda Q in Phlegraean Fields During the Bradyseismic Crisis of 1982-1984.- Dynamic Parameters of Volcaniclastic Soils and Rocks of Campi Flegrei (Naples, Italy).- A Thermo-Mechanical Model of the Inflation and Seismicity of Volcanic Calderas: An Application to the Campi Flegrei System.