Gas migration : events preceding earthquakes TECTONICS AND GAS MIGRATION: Tectonics and Earthquakes; Gas Migration at Plate Boundaries; Surface Soil Gas Surveys; Southern California Faults and Petroleum Reservoirs; EVENTS PRECEDING EARTHQUAKES: Earthquake Precursors; Causes of Earthquakes; Magnitude and Intensity of Earthquakes; Forecasting Large Earthquakes; Ancient Fortellers; Messages from the Earth Crust; Fluids Talk; Whispering Gases; Progress in Developing a Forecasting System Preferential Precursors and Monitoring Network; PRINCIPLES OF GAS MIGRATION: Gas Migration; Typical Composition of Natural Gases; Mechanisms of Gas migration; Paths of Gas Migration; Hazards Resulting from Migrating Gas; Hazards of Gas Storage Fields; INTERRELATIONSHIPS AMONG SUBSIDENCE GAS MIGRATION AND SEISMIC ACTIVITY: Subsidence Mechanics; Fracturing Due to Subsidence; Water Aquifer Subsidence; Technology Induced Earthquakes; Gas Migration in Seismically Active Areas; Joint Forecasting of Subsidence Gas Migration and Seismic Activity; Conclusions; References; Author Index; Subject Index; About the Authors This breakthrough new book may help save countless lives and avoid enormous losses. It presents a methodology for using gas migration to predict earthquakes and explosive gas buildup. Using rigorous scientific investigation and documented worldwide case histories this remarkable book presents compelling evidence showing that changes in gas rates composition and migration accompany the tectronic events preceding earthquakes and their associated seismic events such as volcanoes and tsunamis. Because these gas parameters are detectable and measurable they provide an early warning of seismic activity. Gas Migration is the first book to accumulate analyze and apply the interdisciplinary knowledge on gas migration and detail its connection to tectronic seismic and geologic phenomena. It combines geological geochemical geophysical seismological and petroleum engineering insights to demonstrate how gas migration and its associated phenomena can be used in earthquake and environmental geohazard identification and prediction. Topics include Tectonics and Earthquakes Gas Migration at Plate Boundaries Surface Soil Gas Surveys Faults and Petroleum Reservoirs Earthquake Precursors Whispering Gases Paths and Mechanics of Gas Migration Subsidence Gas Migration and Seismic Activity And much more With this information environmental specialists civil engineers petroleum geologists seismologists and urban planners now have a new and powerful conceptual basis and tool for understanding and perhaps even predicting gas explosions and earthquakes