Publikation |
Autoren des Beitrags | |||||||
Titel des Beitrags | Dating of sediments from four Swiss prealpine lakes with Pb-210 determined by gamma-spectrometry: progress and problems | ||||||
Titel veröffentlicht in ... | Journal of Environmental Radioactivity | ||||||
Verlag | Elsevier Ltd. | Verlagsort | Amsterdam | ||||
Erscheinungsjahr | 2015 | Seite (von - bis) | 78-94 | ||||
ISBN | 0265-931X | Publikations-Art | Peer-Reviewed Article | Band/Jahrgang/Volume | 2015, Volume 145 | ||
URL : | http://www.sciencedirect.com/science/article/pii/S0265931X15000995 | ||||||
Abstract : | In this paper the most important problems in dating lake sediments with unsupported Pb-210 are summarized and the progress in gamma-spectrometry of the unsupported Pb-210 is discussed. The main topics of these studies concern sediment samples preparation for gamma-spectrometry, measurement techniques and data analysis, as well as understanding of accumulation and sedimentation processes in lakes. The vertical distributions of artificial (Cs-137, Am-241, Pu-239) and natural radionuclides (K-40, Pb-210, Pb-214, Bi-214) as well as stable trace elements (Fe, Mn, Pb) in sediment cores from four Swiss lakes were used as examples for the interpretation, inter-comparison and validation of depth-age relations established by three 210Pb-based models (CF-CSR, CRS and SIT). The identification of turbidite layers and the influence of the turbidity flows on the accuracy of sediment dating is demonstrated. Time-dependent mass sedimentation rates in lakes Brienz, Thun, Biel and Lucerne are discussed and compared with published data. | ||||||
Einrichtungen |
Hochschule Ravensburg-Weingarten
Masterstudiengang Umwelt- und Verfahrenstechnik Fakultät Technologie und Management Institut für Angewandte Forschung (IAF) Schwerpunkt Energie und Umwelt (IAF) Bachelorstudiengang Energie- und Umwelttechnik |
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Beteiligte Personen |
Klemt
, Eckehard
Prof.
Dr. rer. nat.
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Projekte |
Radioökologische Studien und Untersuchungen Wissenschaftliche Veröffentlichungen |