Dating of the Dome Fuji shallow ice core based on a record of volcanic eruptions from AD 1260 to AD 2001

作者：Igarashi Makoto; Nakai Yoichi; Motizuki Yuko; Takahashi Kazuya; Motoyama Hideaki^*; Makishima Kazuo

来源：Polar Science, 2011, 5(4): 411-420.

DOI：10.1016/j.polar.2011.08.001

• Ice core
• Dating
• Volcanic eruption record
• Non-sea-salt sulfate
• Antarctica

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).

• 出版日期2011-12
• 单位中国极地研究中心