Nature Geoscience - Current issue : November 2009 - Vol 2 No 11
- Partial melt beneath the Washington Cascades
- Tropical ocean: Cooling the surface
- Lowermost mantle: Weak post-perovskite
- Mountain ridge migration: Drainage basins split
Latest content
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Arsenic release
Article by Harvey et al.
Microbially mediated oxidation of organic carbon is thought to drive the release of arsenic into groundwater. Hydrological and geochemical analyses suggest that pond water is the source of organic carbon in groundwater in Bangladesh.
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Lake Superior
Letter by Desai et al.
Surface water temperatures in Lake Superior have warmed faster than air temperature during the thermally stratified summer season. Analyses of a range of observations show that as a result surface wind speeds above the lake have been increasing by nearly 5% per decade.
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Rocky life
Letter by Templeton et al.
Exposed rocks on underwater mountains and ridges host abundant and diverse microbial communities. X-ray and microscopic analyses of volcanic rocks associated with Loihi seamount in Hawaii suggest that seafloor microbes may commonly be sustained by energy inputs from the water column.
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Nitrogen store
Article by Goldblatt et al.
Geochemical analyses and climate modelling suggest that 2.5 billion years ago much of the nitrogen now stored in the solid Earth was in the atmosphere, and that the higher atmospheric nitrogen levels would have increased the efficacy of greenhouse gases, thus warming the Earth.
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Sources and sinks
Progress Article by Le Quéré et al.
Efforts to control climate change require the stabilization of atmospheric carbon dioxide concentrations. An assessment of the trends in sources and sinks of atmospheric carbon dioxide suggests that the sinks are not keeping up with the increase in carbon dioxide emissions, but uncertainties are still large.
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