Conveners
Applications in Climate Studies
- Hiroyuki Matsuzaki (The University of Tokyo)
Description
Paleoclimate, ocean and sea ice evolution, glaciations, and climate reconstruction using AMS methods.
Cosmogenic 10Be is produced by spallation reactions between galactic cosmic rays and nitrogen and oxygen atoms, mainly in the lower stratosphere and upper troposphere. Since the intensity of galactic cosmic rays is modulated by solar/geomagnetic fields, 10Be serves as a proxy for solar activity and the paleointensity of the Earth's magnetic field (Beer et al., 2012).
The 10Be produced is...
Even with annual rainfall > 2000 mm, many wildfires in alpine coniferous forests were reported in the > 3000 m-high mountains of Taiwan (up to 3952 m). Most of these historic wildfires occurred in spring, the driest season in Taiwan, demonstrating their close relationship with climatic dryness. We have undertaken extensive geomorphic surveys in the Taiwan’s high mountains and found the...
A 64-cm long core from Zolotoe Lake (51°51'28.74''N, 80°15'59.16''E) located in the ribbon forest of the Kulundinsky plain of the West Siberian Lowland of Russia has been dated with AMS 14C dating on sediment total organic carbon (TOC) samples, and 210Pb and 137Cs dating. A clear sharp peak in the 137Cs profile corresponding to 1964 CE appeared at the 12-14 cm depth. The 210Pb profile...
In late Quaternary loess-palaeosol deposits, snail shells are often the only radiocarbon dating material available for building a chronology. However, the reliability of radiocarbon dating different small snail shells remains an open question. Here, we collected different small snail shells from a loess-palaeosol sequence located in central China to test the radiocarbon ages of snail shells....
81Kr is a cosmogenic isotope with half-life of 229 ka. Its dating range is 20-1500 ka, which covers many applications for polar ice. 81Kr can provide absolute, radiometric ages and do not rely on continuous stratigraphy. Thus it is complementary to conventional ice dating techniques and is particularly valuable for disturbed ice samples. 81Kr-dating on 200 kg blue ice samples from the Taylor...
