Seismically enhanced solute fluxes in the Yangtze River headwaters following the AD 2008 Wenchuan earthquake

doi:10.1130/G37246.1

	Seismically enhanced solute fluxes in the Yangtze River headwaters following the AD 2008 Wenchuan earthquake
	An, Zhisheng 4; Hilton, Robert G.2; Yu, Jimin 1; Wang, Jin 4; Li, Gen 3; Deng, Li 4; Wang, Xulong 4; Jin, Zhangdong 4; West, A. Joshua 3; Zhang, Fei 4
刊名	GEOLOGY
	2016
卷号	44 期号:1 页码:47-50
DOI	10.1130/G37246.1
文献子类	Article
英文摘要	Large earthquakes alter physical and chemical processes at Earth's surface, triggering landslides, fracturing rock, changing large-scale permeability, and influencing hydrologic pathways. The resulting effects on global chemical cycles are not fully known. Here we show changes in the dissolved chemistry of the Min Jiang, a river in the Yangtze River (China) headwaters, following the A.D. 2008 M-w 7.9 Wenchuan earthquake. Total solute fluxes transported by the Min Jiang increased after the earthquake, accompanied by an similar to 4x increase in Na/Ca ratios (where Na is Na+ corrected for atmospheric and evaporite contributions) and a 0.000644 +/- 0.000146 increase in Sr-87/Sr-86 isotopic ratios. These changes are consistent with enhanced contribution from silicate sources. We infer that the CO 2 consumption rate via silicate-derived alkalinity increased 4.3 +/- 0.4 times. If similar changes are associated with other large earthquakes, enhanced solute export could directly link tectonic activity with weathering and alkalinity fluxes that supply nutrients to ecosystems, influence seawater chemistry evolution, and steer Earth's long-term carbon cycle and climate.
WOS关键词	WEATHERING PROCESSES ; MIN-JIANG ; CHEMISTRY ; LANDSLIDES ; RECORD
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000370074800016
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5824]
专题	地球环境研究所_加速器质谱中心
作者单位	1.Australian Natl Univ, Res Sch Earth Sci, GPO Box 4, Canberra, ACT 2601, Australia 2.Univ Durham, Dept Geog, Durham DH1 3LE, England 3.Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA 4.Chinese Acad Sci, SKLLQG, Inst Earth Environm, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	An, Zhisheng,Hilton, Robert G.,Yu, Jimin,et al. Seismically enhanced solute fluxes in the Yangtze River headwaters following the AD 2008 Wenchuan earthquake[J]. GEOLOGY,2016,44(1):47-50.
APA	An, Zhisheng.,Hilton, Robert G..,Yu, Jimin.,Wang, Jin.,Li, Gen.,...&Zhang, Fei.(2016).Seismically enhanced solute fluxes in the Yangtze River headwaters following the AD 2008 Wenchuan earthquake.GEOLOGY,44(1),47-50.
MLA	An, Zhisheng,et al."Seismically enhanced solute fluxes in the Yangtze River headwaters following the AD 2008 Wenchuan earthquake".GEOLOGY 44.1(2016):47-50.