Overview

The book offers a modern, comprehensive, and holistic view of natural gas seepage, defined as the visible or invisible flow of gaseous hydrocarbons from subsurface sources to Earth’s surface. Beginning with definitions, classifications for onshore and offshore seepage, and fundamentals on gas migration mechanisms, the book reports the latest findings for the global distribution of gas seepage and describes detection methods. Seepage implications are discussed in relation to petroleum exploration, environmental impacts (hazards, pollution, atmospheric emissions, and past climate change), emerging scientific issues (abiotic gas and methane on Mars), and the role of seeps in ancient cultures. With an updated bibliography and an integrated analysis of available data, the book offers a new fundamental awareness - gas seepage is more widespread than previously thought and influences all of Earth’s external “spheres”, including the hydrosphere, atmosphere, biosphere, and anthroposphere.

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9783319146003

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Giuseppe Etiope is a senior petroleum geologist at the Istituto Nazionale di Geofisica e Vulcanologia in Rome, Italy. His work encompasses the origin, occurrence, and migration of gas in the geosphere, with particular attention to biotic hydrocarbons in sedimentary basins and abiotic gas in ultramafic rocks. His researches on natural gas seepage and gas geochemistry have contributed to the assessment of petroleum systems in several countries and provided the first global estimates of geological methane and other hydrocarbon emissions into the atmosphere.

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