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Caspian sea-level changes during the last millennium: historical and geological evidence from the south Caspian Sea.
- Source :
- Climate of the Past; 2013, Vol. 9 Issue 4, p1645-1665, 21p
- Publication Year :
- 2013
-
Abstract
- Historical literature may constitute a valuable source of information to reconstruct sea-level changes. Here, historical documents and geological records have been combined to reconstruct Caspian sea-level (CSL) changes during the last millennium. In addition to a comprehensive literature review, new data from two short sediment cores were obtained from the south-eastern Caspian coast to identify coastal change driven by water-level changes and to compare the results with other geological and historical findings. The overall results indicate a high-stand during the Little Ice Age, up to -21 m (and extra rises due to manmade river avulsion), with a -28 m low-stand during the Medieval Climate Anomaly, while presently the CSL stands at -26.5 m. A comparison of the CSL curve with other lake systems and proxy records suggests that the main sea-level oscillations are essentially paced by solar irradiance. Although the major controller of the long-term CSL changes is driven by climatological factors, the seismicity of the basin creates local changes in base level. These local base-level changes should be considered in any CSL reconstruction. [ABSTRACT FROM AUTHOR]
- Subjects :
- GEOLOGY
INFORMATION theory
SEDIMENTS
CLIMATOLOGY
SEISMOLOGY
Subjects
Details
- Language :
- English
- ISSN :
- 18149324
- Volume :
- 9
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Climate of the Past
- Publication Type :
- Academic Journal
- Accession number :
- 90099502
- Full Text :
- https://doi.org/10.5194/cp-9-1645-2013