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Radioisotopic evidence of perturbations of recent sedimentary record in lakes: a word of caution for climate studies
- Source :
- Climate Dynamics, Vol. 6 (1992) pp. 145-152
- Publication Year :
- 1992
- Publisher :
- Springer Science and Business Media LLC, 1992.
-
Abstract
- The rate of climatic change estimated from the gradient of signals recorded in lake sediments may be erroneous if post-depositional perturbations are overlooked. A smear out of a pulse signal, over a variable thickness of core section, due to physical or biological mixing, is a well known phenomena. Much less attention is paid to a possible overestimation of the rate of change when a part of record is missing due to an erosion event. In this paper we show a few examples of recent lake sediment perturbations and the resulting distortions in the time scale, as documented by short-lived radionuclides.
Details
- ISSN :
- 14320894 and 09307575
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- Climate Dynamics
- Accession number :
- edsair.doi.dedup.....0151135cd8180cf704142915f3ebd4c5