Determination of the latest sediment accumulation rates and pattern by performing Pb-210 models and Cs-137 technique in the Lake Bafa, Mugla, Turkey


Sert I., Ozel F. E., Yaprak G., Eftelioglu M.

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, vol.307, no.1, pp.313-323, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 307 Issue: 1
  • Publication Date: 2016
  • Doi Number: 10.1007/s10967-015-4234-y
  • Journal Name: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.313-323
  • Keywords: Sedimentation rate, Fecal pellets, Residence time of the Pb-210, Natural (Po-210, Pb-210), Artificial (Cs-137) radionuclides, PO-210, ENVIRONMENT, DEPOSITION, EQUATIONS, METALS, SYSTEM, IMPACT, WATER, BAY
  • Dokuz Eylül University Affiliated: Yes

Abstract

The sediment chronology was determined using Lead-210 (Pb-210) and Cesium-137 (Cs-137) dating method. Profile distributions of Polonium-210 (Po-210) and Pb-210 were evaluated with regarding to sediment porosity, core location, bottom currents and prevalent winds. Max. Po-210 and Pb-210 activity concentrations are found as 193.83 +/- 4.43 and 187.84 +/- 4.84 Bq kg(-1) respectively. According to vertical radionuclide (Po-210/Pb-210) ratios, sediments especially in east part of the lake are rich with respect to the fecal pellets. Residence time of the Pb-210 is calculated as 1.9 months in the lake. Average sedimentation rate (0.359 +/- 0.012 cm year(-1)) in central area is higher than the near shore (0.137 +/- 0.006 cm year(-1)) one in Lake Bafa.