The first is for Iowa, Minnesota, and Wisconsin, where the agency has issued a moderate risk of severe weather. The National Weather Service issued two warnings for another historical weather day on Wednesday. The cooling of global climate over the past few million years may be linked to a decrease in atmospheric CO 2 driven by enhanced continental weathering in these tectonically active regions. A NEVER-BEFORE-SEEN weather forecast has been issued with a tornado alert in several states. The oceanic records of carbonate sedimentation, level of the calcite compensation depth, and δ 13C and δ 87Sr in biogenic sediments are consistent with a global increase in river fluxes since the late Miocene. During the past 5 m.y., uplift rates in these areas have increased significantly this suggests that weathering rates and river fluxes may have increased also. The largest dissolved fluxes today arise in the Himalayan and Andean mountain ranges and the Tibetan Plateau. Download this free 16-page PDF for tips and techniques on how to paint, weather, and add realistic mud to your armor models. Dissolved fluxes in rivers are related to rates of continental weathering, which in turn are strongly dependent on rates of uplift. RELATED TOPICS: weathering armor model tanks. For the elements strontium, calcium, and carbon, rivers provide the primary input, whereas marine biogenic sedimentation dominates removal. In a steady-state ocean, input fluxes of dissolved salts to the sea must be balanced in mass and isotopic value by output fluxes.
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