منابع مشابه
Sulphur geodynamic cycle
Evaluation of volcanic and hydrothermal fluxes to the surface environments is important to elucidate the geochemical cycle of sulphur and the evolution of ocean chemistry. This paper presents S/(3)He ratios of vesicles in mid-ocean ridge (MOR) basalt glass together with the ratios of high-temperature hydrothermal fluids to calculate the sulphur flux of 100 Gmol/y at MOR. The S/(3)He ratios of h...
متن کاملGeology: The need for mass balance and feedback in the geochemical carbon cycle; discussion and reply
Email alerting services cite this article to receive free e-mail alerts when new articles www.gsapubs.org/cgi/alerts click Subscribe to subscribe to Geology www.gsapubs.org/subscriptions/ click Permission request to contact GSA http://www.geosociety.org/pubs/copyrt.htm#gsa click viewpoint. Opinions presented in this publication do not reflect official positions of the Society. positions by scie...
متن کاملC3 Carbon Reduction Cycle
The C3 photosynthetic carbon reduction cycle was first elucidatedbyCalvin,BasshamandBenson in the 1950s in a series of experiments using the green alga Chlorella and radiolabelled carbon. This cycle, frequently referred to as the Calvin cycle, uses the products of the light reactions of photosynthesis, ATP and NADPH, to fix atmospheric CO2 into carbon skeletons that are used directly for starch...
متن کاملClosing the carbon cycle
Green leaves: Every plant on the planet has the ability to convert carbon dioxide into organic molecules using solar energy. Technology is still struggling to match that ability. (Photo: Michael Gross.) The Sun sends us much more energy than we need, but we have yet to learn how to capture, store, and distribute it efficiently. And while we’re learning, we continue to deplete solar energy that ...
متن کاملThe Carbon Cycle and Atmospheric Carbon Dioxide
Contributing Authors D. Archer, M.R. Ashmore, O. Aumont, D. Baker, M. Battle, M. Bender, L.P. Bopp, P. Bousquet, K. Caldeira, P. Ciais, P.M. Cox, W. Cramer, F. Dentener, I.G. Enting, C.B. Field, P. Friedlingstein, E.A. Holland, R.A. Houghton, J.I. House, A. Ishida, A.K. Jain, I.A. Janssens, F. Joos, T. Kaminski, C.D. Keeling, R.F. Keeling, D.W. Kicklighter, K.E. Kohfeld, W. Knorr, R. Law, T. Le...
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ژورنال
عنوان ژورنال: Nature
سال: 1983
ISSN: 0028-0836,1476-4687
DOI: 10.1038/303731a0