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香港大学研究人员提出有关早期大陆形成机制的新理论 快报文章
地球科学快报，2025年第14期
作者:  张文亮
Microsoft Word(15Kb)  |  收藏  |  浏览/下载：104/0  |  提交时间：2025/07/25
Archean continental  mantle plume  water and oxygen isotopes  
大陆的伸展推动了古代全球变暖事件 快报文章
地球科学快报，2022年第14期
作者:  王晓晨
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Palaeocene–Eocene  Plume  
科学家通过研究火山岩稀有气体同位素变化揭示地幔演化过程 快报文章
地球科学快报，2022年第14期
作者:  王晓晨
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noble gas isotopes  plume  
新方法实现碳封存CO2气流的监测与建模 快报文章
地球科学快报，2022年第10期
作者:  刘文浩
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subsurface carbon storage  carbon-dioxide plume  Unsupervised learning  
Nature Geoscience：地幔柱导致的板块旋转引发俯冲作用 快报文章
地球科学快报，2021年第14期
作者:  王晓晨
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Plume  plate rotation  plate subduction  
Identification of chondritic krypton and xenon in Yellowstone gases and the timing of terrestrial volatile accretion 期刊论文
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (25) : 13997-14004
作者:  Broadley, Michael W.;  Barry, Peter H.;  Bekaert, David V.;  Byrne, David J.;  Caracausi, Antonio;  Ballentine, Christopher J.;  Marty, Bernard
收藏  |  浏览/下载：21/0  |  提交时间：2020/06/16
origin of Earth'  s volatiles  accretion  mantle plume  noble gases  Yellowstone  
Hydrothermal (NN)-N-15-N-15 abundances constrain the origins of mantle nitrogen 期刊论文
NATURE, 2020, 580 (7803) : 367-+
作者:  Zhao, Steven;  Jang, Cholsoon;  Liu, Joyce;  Uehara, Kahealani;  Gilbert, Michael;  Izzo, Luke;  Zeng, Xianfeng;  Trefely, Sophie;  Fernandez, Sully;  Carrer, Alessandro;  Miller, Katelyn D.;  Schug, Zachary T.;  Snyder, Nathaniel W.;  Gade, Terence P.;  Titchenell, Paul M.;  Rabinowitz, Joshua D.;  Wellen, Kathryn E.
收藏  |  浏览/下载：37/0  |  提交时间：2020/05/13

Nitrogen is the main constituent of the Earth'  s atmosphere, but its provenance in the Earth'  s mantle remains uncertain. The relative contribution of primordial nitrogen inherited during the Earth'  s accretion versus that subducted from the Earth'  s surface is unclear(1-6). Here we show that the mantle may have retained remnants of such primordial nitrogen. We use the rare (NN)-N-15-N-15 isotopologue of N-2 as a new tracer of air contamination in volcanic gas effusions. By constraining air contamination in gases from Iceland, Eifel (Germany) and Yellowstone (USA), we derive estimates of mantle delta N-15 (the fractional difference in N-15/N-14 from air), N-2/Ar-36 and N-2/He-3. Our results show that negative delta N-15 values observed in gases, previously regarded as indicating a mantle origin for nitrogen(7-10), in fact represent dominantly air-derived N-2 that experienced N-15/N-14 fractionation in hydrothermal systems. Using two-component mixing models to correct for this effect, the (NN)-N-15-N-15 data allow extrapolations that characterize mantle endmember delta N-15, N-2/Ar-36 and N-2/He-3 values. We show that the Eifel region has slightly increased delta N-15 and N-2/Ar-36 values relative to estimates for the convective mantle provided by mid-ocean-ridge basalts(11), consistent with subducted nitrogen being added to the mantle source. In contrast, we find that whereas the Yellowstone plume has delta N-15 values substantially greater than that of the convective mantle, resembling surface components(12-15), its N-2/Ar-36 and N-2/He-3 ratios are indistinguishable from those of the convective mantle. This observation raises the possibility that the plume hosts a primordial component. We provide a test of the subduction hypothesis with a two-box model, describing the evolution of mantle and surface nitrogen through geological time. We show that the effect of subduction on the deep nitrogen cycle may be less important than has been suggested by previous investigations. We propose instead that high mid-ocean-ridge basalt and plume delta N-15 values may both be dominantly primordial features.


  
Kilometer-Scale Hydrologic Exchange Flows in a Gravel Bed River Corridor and Their Implications to Solute Migration 期刊论文
WATER RESOURCES RESEARCH, 2020, 56 (2)
作者:  Zachara, John M.;  Chen, Xingyuan;  Song, Xuehang;  Shuai, Pin;  Murray, Chris;  Resch, C. Tom
收藏  |  浏览/下载：23/0  |  提交时间：2020/07/02
surface water-groundwater interaction  gravel bed river corridor  hydrologic exchange  subsurface hydrogeologic structures  riverine and groundwater modeling  contaminant plume dynamics  
Seismic Evidence for Plume-Slab Interaction by High-Resolution Imaging of the 410-km Discontinuity Under Tonga 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019, 46 (23) : 13687-13694
作者:  Li, Luchen;  Chen, Yi-Wei;  Zheng, Yingcai;  Hu, Hao;  Wu, Jonny
收藏  |  浏览/下载：23/0  |  提交时间：2020/02/17
mantle plume  Samoa  Tonga  plume-slab interaction  discontinuity  
Distinct Frontal Ablation Processes Drive Heterogeneous Submarine Terminus Morphology 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2019
作者:  Fried, M. J.;  Carroll, D.;  Catania, G. A.;  Sutherland, D. A.;  Stearns, L. A.;  Shroyer, E. L.;  Nash, J. D.
收藏  |  浏览/下载：15/0  |  提交时间：2019/11/27
ice-ocean processes  buoyant-plume melt  glacier terminus  outlet glacier