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dc.contributor.authorPanyushkina, Irina
dc.date.accessioned2018-09-06T23:12:46Z
dc.date.available2018-09-06T23:12:46Z
dc.date.issued2017
dc.identifier.citationMiyake F., Masuda K., Nakamura T., Kimura K., Hakozaki M., Jull A.T., Lange T., Cruz R., Panyushkina I.P., Baisan C., Salzer M. 2017. Search for annual 14C excursions in the past. Radiocarbon 59 (2): 315-320. DOI: 10.1017/RDC.2016.54en_US
dc.identifier.urihttp://hdl.handle.net/10150/628655
dc.description.abstractTwo radiocarbon excursions (AD 774–775 and AD 993–994) occurred due to an increase of incoming cosmic rays on a short timescale. The most plausible cause of these events is considered to be extreme solar proton events (SPE). It is possible that there are other annual 14C excursions in the past that have yet to be confirmed. In order to detect more of these events, we measured the 14C contents in bristlecone pine tree-ring samples during the periods when the rate of 14C increase in the IntCal data is large. We analyzed four periods every other year (2479–2455 BC, 4055–4031 BC, 4465–4441 BC, and 4689–4681 BC), and found no anomalous 14C excursions during these periods. This study confirms that it is important to do continuous measurements to find annual cosmic-ray events at other locations in the tree-ring record.en_US
dc.language.isoenen_US
dc.publisherCambridge Univ Pressen_US
dc.rightsCopyright © Arizona Board of Regentsen_US
dc.titleSearch for annual 14C excursions in the past.en_US
dc.typeArticleen_US
dc.contributor.departmentLaboratory of Tree Ring Research, University of Arizonaen_US
dc.identifier.journalRadiocarbonen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
refterms.dateFOA2018-09-06T23:12:47Z


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