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AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name. |
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STUDIA AMBIENTUM - Issue no. 1-2 / 2008 | |||||||
Article: |
THE FIRST RADIO-METRICAL ESTIMATES OF THE RED LAKE’S SEDIMENTATION RATE. Authors: ROBERT BEGY, CONSTANTIN COSMA, ZOLTAN HORVATH. |
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Abstract: This work presents the first estimates of the Red lake’s sedimentation rate. The determination of the sediment accumulation rate was estimated by using two well-known methods of recent sediment dating the Pb-210 and the Cs-137 method. Both methods are based on using gamma emission radio nuclides. The Pb-210 and Cs-137 concentration in the sediment were measured by using a gamma spectrometer with a Hp-Ge detector, GMX type. Then has been found activities between 40 – 110 Bq/kg for Pb-210 and 8-697 Bq/kg for Cs-137. Using the CRS methods for the calculation of sedimentation rate, we obtained a 0.5 cm /year value. Keywords: Pb-210, Cs-137, radioisotopes, dating methods, sedimentation rate |
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