scholarly journals Eruptive history of Karymsky volcano, Kamchatka, USSR, based on tephra stratigraphy and 14C dating

1991 ◽  
Vol 53 (3) ◽  
pp. 195-206 ◽  
Author(s):  
O A Braitseva ◽  
I V Melekestsev
2008 ◽  
pp. 593-627 ◽  
Author(s):  
Michael A. Clynne ◽  
Andrew T. Calvert ◽  
Edward W. Wolfe ◽  
Russell C. Evarts ◽  
Robert J. Fleck ◽  
...  

2018 ◽  
Author(s):  
James K. Frye ◽  
◽  
Stephen C. Kuehn ◽  
Eric S. Arrington ◽  
Cameron Jean McNeely ◽  
...  

Author(s):  
Mary Kisaka ◽  
Karen Fontijn ◽  
Ceven Shemsanga ◽  
Ines Tomašek ◽  
Sankaranna Gaduputi ◽  
...  

2019 ◽  
Author(s):  
Bryan C. Lougheed

Abstract. The systematic bioturbation of single particles (such as foraminifera) within deep-sea sediment archives leads to the apparent smoothing of any temporal signal as record by the downcore, discrete-depth mean signal. This smoothing is the result of the systematic mixing of particles from a wide range of depositional ages into the same discrete depth interval. Previous sediment models that simulate bioturbation have specifically produced an output in the form of a downcore, discrete-depth mean signal. Palaeoceanographers analysing the distribution of single foraminifera specimens from sediment core intervals would be assisted by a model that specifically evaluates the effect of bioturbation upon single specimen populations. Taking advantage of recent increases in computer memory, the single-specimen SEdiment AccuMUlation Simulator (SEAMUS) was created in Matlab, whereby large arrays of single specimens are simulated. This simulation allows researchers to analyse the post-bioturbation age heterogeneity of single specimens contained within discrete-depth sediment core intervals, and how this heterogeneity is influenced by changes in sediment accumulation rate (SAR), bioturbation depth (BD) and species abundance. The simulation also assigns a realistic 14C activity to each specimen, by considering the dynamic Δ14C history of the Earth and temporal changes in reservoir age. This approach allows for the quantification of possible significant artefacts arising when 14C dating multi-specimen samples with heterogeneous 14C activity. Users may also assign additional desired carrier signals to specimens (e.g., stable isotopes, trace elements, temperature, etc.) and consider a second species with an independent abundance. Finally, the model can simulate a virtual palaeoceanographer by randomly picking whole specimens (whereby the user can set the percentage of older, broken specimens) of a prescribed sample size from discrete depths, after which virtual laboratory 14C dating and 14C calibration is carried out within the model.


Radiocarbon ◽  
2014 ◽  
Vol 56 (02) ◽  
pp. 691-697 ◽  
Author(s):  
Nanae Nakao ◽  
Minoru Sakamoto ◽  
Mineo Imamura

The radiocarbon dating method was applied to the study of Japanese traditional wooden buildings. The traditional Japanese architecture studied includes the Main Hall of Banna-ji Temple (Buddhist building), Sekisui-in of Kozan-ji Temple (noble house), Hakogi-ke house (farmhouse), and Kawai-ke house (townhouse).14C dating proved useful as a research method to better understand the history of these buildings and Japanese architecture as a whole.


Sign in / Sign up

Export Citation Format

Share Document