Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Charlotte L Pearson"'
Autor:
Nicolas Brehm, Marcus Christl, Timothy D. J. Knowles, Emmanuelle Casanova, Richard P. Evershed, Florian Adolphi, Raimund Muscheler, Hans-Arno Synal, Florian Mekhaldi, Chiara I. Paleari, Hanns-Hubert Leuschner, Alex Bayliss, Kurt Nicolussi, Thomas Pichler, Christian Schlüchter, Charlotte L. Pearson, Matthew W. Salzer, Patrick Fonti, Daniel Nievergelt, Rashit Hantemirov, David M. Brown, Ilya Usoskin, Lukas Wacker
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
Two extreme solar energetic particle events have been found by carbon isotopes measured in ancient tree rings in 7176 and 5259 BCE. The recorded ~2% increases of atmospheric 14 C for both events exceeds in amplitude of all previously observed events.
Externí odkaz:
https://doaj.org/article/15c7584107454fb6b056596eb09f847b
Publikováno v:
Radiocarbon. 64:569-588
Both dendrochronology and radiocarbon (14C) dating have their roots back in the early to mid-1900s. Although they were independently developed, they began to intertwine in the 1950s when the founder of dendrochronology, A. E. Douglass, provided dated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::61b4aa0d1da46784a8f94b90dbc853b8
https://doi.org/10.1017/rdc.2021.97
https://doi.org/10.1017/rdc.2021.97
Autor:
Irka Hajdas, Philippa Ascough, Mark H. Garnett, Stewart J. Fallon, Charlotte L. Pearson, Gianluca Quarta, Kirsty L. Spalding, Haruka Yamaguchi, Minoru Yoneda
Publikováno v:
Nature Reviews Methods Primers. 1
Radiocarbon dating uses the decay of a radioactive isotope of carbon (14C) to measure time and date objects containing carbon-bearing material. With a half-life of 5,700 ± 30 years, detection of 14C is a useful tool for determining the age of a spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7da841b1d770eef6601b74ba0680963f
https://doi.org/10.1038/s43586-021-00058-7
https://doi.org/10.1038/s43586-021-00058-7