Dating of recent dianchi lake sediments by gamma ray analysis
Creators
- 1. Chinese Academy of Sciences, Nanjing (China). Lake Sediment and Environment Laboratory
Description
Sediment samples from Dianchi Lake sediment core were measured by means of the direct γ ray analysis for the sediment-depth profiles of natural radionuclides 210Pb and 226Ra and artificial radionuclides 137Cs and 241Am. The 226Ra activity provides a direct measurement of supported 210Pb activity for each sample analyzed, and the 137Cs and 241Am activity may provide independent age markers. The sediment core was dated with 210Pb by using a constant rate of supply (CRS) model and the results were consistent with additional dating evidences from the artificial fallout nuclides 137Cs and 241Am. The study indicates that the sediment accumulation rates of Dianchi Lake were varied significantly during the past 100 years and had an accelerated accumulation rate in recent several years
Additional details
Publishing Information
- Journal Title
- Nuclear Techniques
- Journal Volume
- 20
- Journal Issue
- 2
- Journal Page Range
- p. 100-104.
- ISSN
- 0253-3219
- CODEN
- NUTEDL
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 28040440
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- AMERICIUM 241; CESIUM 137; CHINA; CORRECTIONS; GAMMA SPECTROSCOPY; ISOTOPE DATING; LAKES; LEAD 210; RADIUM 226; SEDIMENTS
- Descriptors DEC
- ACTINIDE NUCLEI; AGE ESTIMATION; ALPHA DECAY RADIOISOTOPES; AMERICIUM ISOTOPES; ASIA; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CARBON 14 DECAY RADIOISOTOPES; CESIUM ISOTOPES; EVEN-EVEN NUCLEI; HEAVY ION DECAY RADIOISOTOPES; HEAVY NUCLEI; INTERMEDIATE MASS NUCLEI; ISOTOPES; LEAD ISOTOPES; NUCLEI; ODD-EVEN NUCLEI; RADIOISOTOPES; RADIUM ISOTOPES; SPECTROSCOPY; SPONTANEOUS FISSION RADIOISOTOPES; SURFACE WATERS; YEARS LIVING RADIOISOTOPES