The new AMS facility at Tianjin University

Dong, Kejun; Lang, Yunchao; Hu, Nan; Zhong, Jun; Xu, Sheng; Hauser, T.; Gan, Ross

doi:10.1007/s41605-018-0064-0

Cited by 15 publications

(4 citation statements)

References 9 publications

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“…For analysis of the Δ 14 C, part of the above purified CO 2 was graphitized using the sealed tube zinc reduction method (Xu et al., 2007). The 14 C/ 12 C ratio was determined using a 0.5 MV accelerator mass spectrometer (AMS; Dong et al., 2018). Repeated measurements of the secondary standards showed a ∼0.3% precision and accuracy on 14 C/ 12 C ratio.…”

Section: Methodsmentioning

confidence: 99%

Assessing the Deep Carbon Release in an Active Volcanic Field Using Hydrochemistry, δ¹³C_DIC and Δ¹⁴C_DIC

et al. 2023

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A quantification of the input of deep carbon to the Earth's surface is crucial to understand the carbon budget and carbon biogeochemical processes in active volcanic zone (Caudron et al., 2012;Chiodini et al., 2020;Rivé et al., 2013). It is commonly known that the volcanic eruptions would release a large amount of CO 2 into the atmosphere, which can regulate the climate at the geological timescales (Berner & Caldeira, 1997;Hilton & West, 2020). Recently, it has been recognized that

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Section: Methodsmentioning

confidence: 99%

Assessing the Deep Carbon Release in an Active Volcanic Field Using Hydrochemistry, δ¹³C_DIC and Δ¹⁴C_DIC

et al. 2023

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“…The purified CO 2 was graphitized through the sealed tube zinc reduction method. The 14 C/ 12 C ratio was determined using a 0.5 MV accelerator mass spectrometer (Dong et al, 2018). Repeated measurements of the secondary standards showed $0.3% precision and accuracy on the 14 C/ 12 C ratio.…”

Section: The Analyses Of Chemical and Isotopic Compositionsmentioning

confidence: 99%

Temporal variations of chemical and isotopic compositions in the river draining the Changbaishan volcanic area: The role of hydrological changes and volcanic activities

Wang

Zhong

Zhang

et al. 2023

Hydrological Processes

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Volcanic activities are known to release a substantial amount of deep carbon to the Earth's surface, thereby influencing the global carbon cycle on geological timescales.It is crucial to clarify the contribution of deep carbon and its changes under hydrological variations in rivers draining volcanic areas. This study reported the temporal variations of chemical compositions and isotopic compositions (δ 13 C and Δ 14 C) of dissolved inorganic carbon (DIC) from the Erdaobai River, which drains the Changbaishan volcanic area. The results showed that hydrothermal fluids had a considerable impact on the chemical and carbon isotopic compositions in this study area. The chemical mass balance model indicated that hydrothermal fluids composed 4.6 ± 0.7% of the water budget for the Erdaobai River. Additionally, the isotopic mixing model of Δ 14 C DIC showed that hydrothermal DIC accounted for 83.6 ± 1.9% and 40.8 ± 3.7% of the DIC budget for the upstream and downstream, respectively, and the proportion of hydrothermal contribution also varied in a narrow range in response to hydrological changes. However, the DIC and dissolved organic carbon fluxes showed significant seasonal variations, verifying the controlling role of hydrological processes. This study highlighted the impact of hydrological processes and deep carbon release on the carbon budget in the volcanic catchment, which is of great significance for understanding atmospheric CO 2 balance and climate change. K E Y W O R D S carbon isotopes, Changbaishan volcanic area, deep carbon, dissolved inorganic carbon, hydrological variations 1 | INTRODUCTION Climate change is controlled by the balance between carbon release from volcanic degassing and CO 2 consumption by silicate weathering on geological time scales (Berner & Caldeira, 1997; Penman et al., 2020). Silicate weathering consumes atmospheric CO 2 and stores it in the ocean as carbonate deposits (Frings & Buss, 2019), constituting a principal sink in the long-term (50-100 Ma) carbon cycle (Liu et al., 2011; Maher & Chamberlain, 2014). Volcanic degassing is considered the main way for transferring deep carbon to the Earth's surface (Aiuppa et al., 2019), and therefore, represents an essential regulator of global climate (Dasgupta, 2013;Maclennan et al., 2002).The discharge of hydrothermal fluids altered solute fluxes and carbon cycle in volcanic catchments (Chiodini et al., 2004;

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“…Both 10 Be/ 9 Be ratios and 26 Al/ 27 Al ratios were then determined using the 0.5 MV AMS facility at School of Earth System Science, Tianjin University (Dong et al, 2018). This AMS system, designed by National Electrostatic Corporation (NEC), is an extension of the compact 14 C AMS system for 10 Be and 26 Al.…”

Section: Sampling Strategymentioning

confidence: 99%

Erosions on the southern Tibetan Plateau: Evidence from in-situ cosmogenic nuclides 10Be and 26Al in fluvial sediments

Zhang

Cui

et al. 2022

J. Geogr. Sci.

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Investigating topographic and climatic controls on erosion at variable spatial and temporal scales is essential to our understanding of the topographic evolution of the orogen. In this work, we quantified millennial-scale erosion rates deduced from cosmogenic 10 Be and 26 Al concentrations in 15 fluvial sediments from the mainstream and major tributaries of the Yarlung Zangbo River draining the southern Tibetan Plateau (TP). The measured ratios of 26 Al/ 10 Be range from 6.33 ± 0.29 to 8.96 ± 0.37, suggesting steady-state erosion processes. The resulted erosion rates vary from 20.60 ± 1.79 to 154.00 ± 13.60 m Myr -1 , being spatially low in the upstream areas of the Gyaca knickpoint and high in the downstream areas. By examining the relationships between the erosion rate and topographic or climatic indices, we found that both topography and climate play significant roles in the erosion process for basins in the upstream areas of the Gyaca knickpoint. However, topography dominantly controls the erosion processes in the downstream areas of the Gyaca knickpoint, whereas variations in precipitation have only a second-order control. The marginal Himalayas and the Yarlung Zangbo River Basin (YZRB) yielded significantly higher erosion rates than the central plateau, which indicated that the landscape of the central plateau surface is remarkably stable and is being intensively consumed at its boundaries through river headward erosion. In addition, our 10 Be erosion rates are comparable to present-day hydrologic erosion rates in most cases, suggesting either weak human activities or long-term steady-state erosion in this area.

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The new AMS facility at Tianjin University

Cited by 15 publications

References 9 publications

Assessing the Deep Carbon Release in an Active Volcanic Field Using Hydrochemistry, δ¹³C_DIC and Δ¹⁴C_DIC

Assessing the Deep Carbon Release in an Active Volcanic Field Using Hydrochemistry, δ¹³C_DIC and Δ¹⁴C_DIC

Temporal variations of chemical and isotopic compositions in the river draining the Changbaishan volcanic area: The role of hydrological changes and volcanic activities

Erosions on the southern Tibetan Plateau: Evidence from in-situ cosmogenic nuclides 10Be and 26Al in fluvial sediments

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The new AMS facility at Tianjin University

Cited by 15 publications

References 9 publications

Assessing the Deep Carbon Release in an Active Volcanic Field Using Hydrochemistry, δ13CDIC and Δ14CDIC

Assessing the Deep Carbon Release in an Active Volcanic Field Using Hydrochemistry, δ13CDIC and Δ14CDIC

Temporal variations of chemical and isotopic compositions in the river draining the Changbaishan volcanic area: The role of hydrological changes and volcanic activities

Erosions on the southern Tibetan Plateau: Evidence from in-situ cosmogenic nuclides 10Be and 26Al in fluvial sediments

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Product

Resources

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Assessing the Deep Carbon Release in an Active Volcanic Field Using Hydrochemistry, δ¹³C_DIC and Δ¹⁴C_DIC

Assessing the Deep Carbon Release in an Active Volcanic Field Using Hydrochemistry, δ¹³C_DIC and Δ¹⁴C_DIC