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14C in speleothems

Description: Das Projekt "14C in speleothems" wird vom Umweltbundesamt gefördert und von Universität Heidelberg, Institut für Umweltphysik durchgeführt. Using the absolute age of speleothem samples from Th/U-dating, we can determine their 14C reservoir age. The 14C reservoir age is controlled mainly by pCO2 in the unsaturated soil zone, the ratio of root respiration (with modern 14C levels) and microbial decomposition of soil organic matter (depleted in 14C due to radioactive decay). The main factors governing soil conditions are soil temperature and precipitation. Hence, variations in the 14C reservoir age provide information on the variability of these two climate variables.

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Origin: /Bund/UBA/UFORDAT

Tags: Heidelberg ? Humus ? Main ? Bodentemperatur ? Datierung ? Klimavariabilität ? Rhizosphäre ? Ungesättigte Bodenzone ? Atmung ? Bodenzustand ? Mineral ? Niederschlag ? Radioaktivität ? C-14 ? Kohlenstoffisotop ? Speleotheme ? [Geologie] ?

Region: Baden-Württemberg

Bounding box: 9° .. 9° x 48.5° .. 48.5°

License: cc-by-nc-nd/4.0

Language: Deutsch

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Time ranges: 2005-11-01 - 2008-10-31

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