High-resolution records of 10Be in endogenic travertine from Baishuitai, China: A new proxy record of annual solar activity?

Xu, Hongyang; Miyahara, Hiroko; Horiuchi, Kazuho; Matsuzaki, Hiroyuki; Sun, Hailong; Luo, Weijun; Zheng, Xiaodong; Suganuma, Yûsuke; Wang, Shijie; Zhou, Limin

doi:10.1016/j.quascirev.2019.05.012

Cited by 5 publications

(14 citation statements)

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“…Although the overall effect of overland flow on the travertine platform seems much smaller than the previous sampling site (Xu et al, 2019), correlation between 10 Be conc (norm)/α Fe and K in Figure 2e suggests that the 10 Be inflow associated with occasional heavy rainfall events is non-negligible. For example, the concentration of 10 Be in W119 was ∼50% higher while K and residue contents were also markedly higher than in neighboring layers, although Fe content was relatively stable (green shading in Figure 1).…”

Section: Effect Of Overland Flow On 10 Be Concentrationsmentioning

confidence: 59%

“…In addition to the effect of iron on 10 Be transport efficiency, overland flow caused by local precipitation may also affect the 10 Be concentration in travertines (Xu et al., 2019). For example, δ 18 O was lower during the formation of the W140–192 (Figure 1), during which the residue amount was also increased.…”

Section: Discussionmentioning

confidence: 99%

“…The extraction of 10 Be was conducted following procedures given in Xu et al. (2019). To improve the recovery rate of Be, ∼0.5 ml Fe(NO 3 ) 3 solution (1,000 ppm, Wako) was added with ammonia water (NH 3 •H 2 O) to promote the co‐precipitation at the first precipitation process.…”

Section: Methodsmentioning

confidence: 99%

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Annual ¹⁰Be Record for 1510–1701 CE Obtained From Endogenic Travertine at Baishuitai, China: A New Proxy Record of Annual Solar Activity

Xu,

Miyahara,

Horiuchi

et al. 2024

Geophysical Research Letters

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The 10Be record in laminated travertines is a potential proxy for reconstructing past solar activity down to the annual scale; however, correcting for the potential influence of climatic or environmental variations remains challenging. Here, we present an annually resolved 10Be record using travertines from Baishuitai, China, covering the period from 1510 to 1701 CE, along with environmental proxies, to evaluate climatic influences and implement corrections to accurately reconstruct solar activity. We demonstrate that the 10Be deposition in travertines exhibits two environmental impacts: the transport efficiency of atmospheric 10Be into travertine and the additional 10Be inflow from overland flow associated with rainfall. We show that these impacts can be corrected based on iron and potassium contents. The resulting corrected record agrees with ice‐core and tree‐ring records, demonstrating the feasibility of using such carbonate sediment 10Be records to reconstruct past solar activity.

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Section: Effect Of Overland Flow On 10 Be Concentrationsmentioning

confidence: 59%

Section: Discussionmentioning

confidence: 99%

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Annual ¹⁰Be Record for 1510–1701 CE Obtained From Endogenic Travertine at Baishuitai, China: A New Proxy Record of Annual Solar Activity

Xu,

Miyahara,

Horiuchi

et al. 2024

Geophysical Research Letters

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“…We also developed a new methodology for reconstructing past solar and cosmic ray variations using carbonate deposits called travertines (Xu et al 2019;Miyahara et al 2020). Travertines form clear annual layers and contain beryllium-10 produced by cosmic rays.…”

Section: Proxy-based Observation On Past Solar and Cosmic Ray Variationsmentioning

confidence: 99%

PSTEP: project for solar–terrestrial environment prediction

Kusano¹,

Ichimoto²,

Ishii³

et al. 2021

Earth Planets Space

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Although solar activity may significantly impact the global environment and socioeconomic systems, the mechanisms for solar eruptions and the subsequent processes have not yet been fully understood. Thus, modern society supported by advanced information systems is at risk from severe space weather disturbances. Project for solar–terrestrial environment prediction (PSTEP) was launched to improve this situation through synergy between basic science research and operational forecast. The PSTEP is a nationwide research collaboration in Japan and was conducted from April 2015 to March 2020, supported by a Grant-in-Aid for Scientific Research on Innovative Areas from the Ministry of Education, Culture, Sports, Science and Technology of Japan. By this project, we sought to answer the fundamental questions concerning the solar–terrestrial environment and aimed to build a next-generation space weather forecast system to prepare for severe space weather disasters. The PSTEP consists of four research groups and proposal-based research units. It has made a significant progress in space weather research and operational forecasts, publishing over 500 refereed journal papers and organizing four international symposiums, various workshops and seminars, and summer school for graduate students at Rikubetsu in 2017. This paper is a summary report of the PSTEP and describes the major research achievements it produced.

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“…A similar concept can be applied to the Baishuitai travertine, in which the laminated texture and geochemical composition of the water have been studied intensively (Z. Liu et al, 2003Liu et al, , 2010Xu et al, 2019;Yan et al, 2017). However, the seasonal pattern of lamination is opposite; a porous clay-rich layer in the warm rainy summer and a denser layer in the cold winter (Z.…”

Section: Implications For the Late Eocene Climate In The Jianchuan Basinmentioning

confidence: 99%

Upper Eocene travertine‐lacustrine carbonate in the Jianchuan basin, southeastern Tibetan Plateau: Reappraisal of its origin and implication for the monsoon climate

et al. 2021

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The Asian monsoon is one of the largest climatic systems in the world, but age of its onset has been estimated differently ranging from the late Eocene to the Quaternary. We investigated the sedimentology and stable isotopic compositions of the upper Eocene Jiuziyan Formation, a terrestrial limestone unit in the Jianchuan basin, Yunnan Province in China. This limestone formation is restricted in several localities in the central part of the basin. Previously, this has been characterized as palustrine carbonate and the transition to the sublacustrine deposit of the overlying Shuanghe Formation was interpreted as the appearance of wetter climate during the late Eocene. Our observations of macro-and microfacies revealed sedimentary fabrics indicating rapid CaCO 3 precipitation, such as dendritic calcite and calcified reed stems, which are unlikely to develop in a simple lacustrine setting. High carbonate content (mostly >90 %) and restricted distribution of the Jiuziyan limestone indicate a depositional setting spatially limited and isolated from clastic influx. These findings, together with clearly higher δ 13 C values (À0.7 ‰ to +6.9 ‰) and lower δ 18 O values (À14.6 ‰ to À10.5 ‰) than those of the Shuanghe Formation, indicate that the limestone was mainly travertine, carbonate formed from endogenic spring water. The elevated δ 13 C resulted from a large amount of CO 2 degassing from spring water with high pCO 2 . In addition, the occurrence of centimeter-scale lamination coupled with cyclic changes in δ 13 C and δ 18 O is almost identical with the modern annually-laminated travertine reported from Baishuitai in northern Yunnan Province, implying comparable amplitude of seasonal temperature and precipitation changes to the record of the modern travertine at Baishuitai. Our results do not contradict the previous interpretation of late Eocene wetting and additionally suggest the existence of the late Eocene monsoon climate in the Jianchuan basin.

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High-resolution records of 10Be in endogenic travertine from Baishuitai, China: A new proxy record of annual solar activity?

Cited by 5 publications

References 59 publications

Annual ¹⁰Be Record for 1510–1701 CE Obtained From Endogenic Travertine at Baishuitai, China: A New Proxy Record of Annual Solar Activity

Annual ¹⁰Be Record for 1510–1701 CE Obtained From Endogenic Travertine at Baishuitai, China: A New Proxy Record of Annual Solar Activity

PSTEP: project for solar–terrestrial environment prediction

Upper Eocene travertine‐lacustrine carbonate in the Jianchuan basin, southeastern Tibetan Plateau: Reappraisal of its origin and implication for the monsoon climate

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High-resolution records of 10Be in endogenic travertine from Baishuitai, China: A new proxy record of annual solar activity?

Cited by 5 publications

References 59 publications

Annual 10Be Record for 1510–1701 CE Obtained From Endogenic Travertine at Baishuitai, China: A New Proxy Record of Annual Solar Activity

Annual 10Be Record for 1510–1701 CE Obtained From Endogenic Travertine at Baishuitai, China: A New Proxy Record of Annual Solar Activity

PSTEP: project for solar–terrestrial environment prediction

Upper Eocene travertine‐lacustrine carbonate in the Jianchuan basin, southeastern Tibetan Plateau: Reappraisal of its origin and implication for the monsoon climate

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Annual ¹⁰Be Record for 1510–1701 CE Obtained From Endogenic Travertine at Baishuitai, China: A New Proxy Record of Annual Solar Activity

Annual ¹⁰Be Record for 1510–1701 CE Obtained From Endogenic Travertine at Baishuitai, China: A New Proxy Record of Annual Solar Activity