Projects are ordered by date with the most up to date at the top:
Dating and interpretation of palaeoclimatic record from Aral Sea sediments of the last 2000 years (KJB300320901).
2009
Coordinating recipient: Anna Píšková (Institute of Inorganic Chemistry AS CR, v.v.i.)
The proposal is a continuation of previous detailed analyses of palaeoclimatic records from a core from Aral Sea started in our workplace in 2006. The aim of the project is to estimate Aral Sea level fluctuations of last 2000 years and its causes. Unanswered question is about the ratio of influences of climatic forcing and irrigation activities on the past lake level changes. Material from 430-cm long sedimentary core obtained in 2002 was got due to collaboration with Up to now this material has been studied by NIR-Vis spectral scanning and chemical analysis of salts and clay minerals. To obtain a complex detailed palaeoclimatic record (resolution 3-5 years) and to achieve correct interpretation of already finished analyses, it is essential to perform economically demanding radiocarbon dating and time-demanding analysis of fossil diatoms. These two procedures are the main content of the proposal.
Interplay of climate, human impact, and land erosion recorded in the natural archives of Stráznické Pomoraví (Czech Republic) (IAAX00130801).
2008 – 2011
Coordinating recipient: Jaroslav Kadlec (Czech Geological Institute AS CR, v.v.i.), recipient: Tomáš Grygar (Institute of Inorganic Chemistry AS CR, v.v.i.), PhD. student: Anna Píšková
The proposed project is focused on a detailed record of waterborne and aeolian erosions in Strážnické Pomoraví on the lower reach of Morava River in the Holocene, in particular in the last millennium. The main aim is to estimate how the erosion was affected by natural and anthropogenic factors during the fall of the Great Moravian Empire, during Mediaeval colonization, and in the current extensive agricultural land use. Erosion processes recorded in the flood and aeolian sediments will be reconstructed using sedimentological, geophysical, mineralogical, and geochemical means and pollen analysis, supplemented by (14)C, dendrochronological, and OSL dating. The results will be compared with the historical records on the land use and historical-climatologic information on extreme windstorms and flood events. The targeted multidisciplinary study of that natural archive completed by historical data will permit reconstruction of the climate evolution in Central Europe in the last millennium.
Palaeoenvironmental record in the Late Palaeozoic continental basins of the Bohemian Massif (KJB307020601).
2006 – 2008
Coordinating recipient: Richard Lojka (Czech Geological Survey), recipient: Anna Píšková (Institute of Inorganic Chemistry AS CR, v.v.i.)
The objective of the project is to characterize the climatic changes during the Late Palaeozoic in a continuous sedimentary record of the Bohemian Massif. The main aim of this project is to restore a continuous paleo-climatic proxy record in selected sedimentary profiles based on quantitative analysis of clay mineral assemblages, Fe-bearing minerals, oxygen isotope analysis of lacustrine and pedogenic carbonates, and geochemistry of organic matter. Course of Permian climate aridization, clay mineral diagenesis and its correlation with thermal maturity of organic mater will be chracterized in detail. The results will be used in comparative models of thermal history of the Late Palaeozoic continental basins and its implications to early post-orogenic history of the Bohemian Massif.
