Geodetic And Geophysical Effects Associated With Seismic And Volcanic Hazards

The topics included in this issue deal with many aspects of volcanic and seismic activity, two of the natural hazards of geological origin that have the greatest impact and pose the predominant risk to society. This book comprises eighteen papers, most of which were presented at an international seminar organized and held at the Complutense University of Madrid in October 2001. The papers address geodetic, geophysical and geochemical effects caused by seismic and volcanic activity; monitoring of volcanic and seismic processes using space and terrestrial techniques; complementarity of these techniques; theoretical modelling of volcanic and seismic processes; inverse problem; interpretation of observations; hazards; seismicity patterns and application.

Modeling and simulations Theoretical studies

Inhalt
Stress Changes Modelled for the Sequence of Strong Earthquakes in the South Iceland Seismic Zone since 1706.- 3-D Modelling of Campi Flegrei Ground Deformations: Role of Caldera Boundary Discontinuities.- Comparison of Integrated Geodetic Data Models and Satellite Radar Interferograms to Infer Magma Storage During the 19911993 Mt. Etna Eruption.- GPS Monitoring in the N-W Part of the Volcanic Island of Tenerife, Canaries, Spain: Strategy and Results.- Far-field Gravity and Tilt Signals by Large Earthquakes: Real or Instrumental Effects?.- Study of Volcanic Sources at Long Valley Caldera, California, Using Gravity Data and a Genetic Algorithm Inversion Technique.- Gravity Changes and Internal Processes: Some Results Obtained from Observations at Three Volcanoes.- New Results at Mayon, Philippines, from a Joint Inversion of Gravity and Deformation Measurements.- The Interpretation of Gravity Changes and Crustal Deformation in Active Volcanic Areas.- Intrusive Mechanisms at Mt. Etna Forerunning the July-August 2001 Eruption from Seismic and Ground Deformation Data.- Methods for Evaluation of Geodetic Data and Seismicity Developed with Numerical Simulations: Review and Applications.- A Free Boundary Problem Related to the Location of Volcanic Gas Sources.- High CO2 Levels in Boreholes at El Teide Volcano Complex (Tenerife, Canary Islands): Implications for Volcanic Activity Monitoring.- Simulation of the Seismic Response of Sedimentary Basins with Vertical Constant-Gradient Velocity for Incident SH Waves.- The Use of Ambient Seismic Noise Measurements for the Estimation of Surface Soil Effects: The Motril City Case (Southern Spain).- Results of Analysis of the Data of Microseismic Survey at Lanzarote Island, Canary, Spain.- Microtremor Analyses at Teide Volcano (CanaryIslands, Spain): Assessment of Natural Frequencies of Vibration Using Time-dependent Horizontal-tovertical Spectral Ratios.- Tilt Observations in the Normal Mode Frequency Band at the Geodynamic Observatory Cueva de los Verdes, Lanzarote.