期刊
POLAR SCIENCE
卷 5, 期 4, 页码 411-420出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.polar.2011.08.001
关键词
Ice core; Dating; Volcanic eruption record; Non-sea-salt sulfate; Antarctica
资金
- Japan Society for the Promotion of Science (JSPS) [20241007]
- Grants-in-Aid for Scientific Research [20241007] Funding Source: KAKEN
We measured the concentration of non-sea-salt sulfate (nssSO(4)(2-)) in the Dome Fuji shallow ice core (Antarctica) from the surface to 40 m depth with the aim of dating the core with reference to the record of volcanic eruptions. Three huge spikes related to large-scale volcanic eruptions were detected at depths of 12.5, 29.9, and 38.8 m, correlated to the eruptions of Tambora (AD 1815), Kuwae (AD 1452) and an unknown event (AD 1259), respectively. We identified another nine nssSO(4)(2-) spikes related to accurately dated eruption events. The shallow ice core was dated from AD 1260 to AD 2001 based on these 12 eruption events and the assumption of constant annual snow accumulation in the periods between eruption events. The results yield a maximum correction of similar to 20 years compared with the dating proposed in a previous study. The annual accumulation varied within +/-similar to 15% of the average water equivalent value over the study period (25.5 mm). (C) 2011 Elsevier B.V. and NIPR. All rights reserved.
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