GEOPHYSICAL MONOGRAPH SERIES Hydrothermal Circulation and Seawater Chemistry Links and Feedbacks The chemical exchange between seawater and the underlying ocean crust occurs at temperatures ranging from about 2°C on the seafloor to more than 500°C deep in the crust. These hydrothermal reactions strongly influence the chemical composition of seawater and, in turn, seawater chemistry impacts hydrothermal exchange; these feedbacks play a crucial role in the Earth system. Hydrothermal Circulation and Seawater Chemistry: Links and Feedbacks explores on- and off-axis hydrothermal systems and their effects on ocean chemistry and the Earth system. Volume highlights include: - Hydrothermal fluxes dependent on boundary conditions such as climate and sedimentation history - Low-temperature, off-axis systems that have large fluxes of elements - Observational and experimental perspectives of on-axis hydrothermal processes - Methods for tracking hydrothermal and oceanic processes using sediments or isotope proxies - The role of oceanic hydrothermal systems in planetary-scale cycles on Earth and beyond The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals

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