DOI: 10.1002/2015GL063345
论文题名: The impact of a catastrophic mine tailings impoundment spill into one of North America's largest fjord lakes: Quesnel Lake, British Columbia, Canada
作者: Petticrew E.L. ; Albers S.J. ; Baldwin S.A. ; Carmack E.C. ; Déry S.J. ; Gantner N. ; Graves K.E. ; Laval B. ; Morrison J. ; Owens P.N. ; Selbie D.T. ; Vagle S.
刊名: Geophysical Research Letters
ISSN: 0094-8706
EISSN: 1944-8437
出版年: 2015
卷: 42, 期: 9 起始页码: 3347
结束页码: 3355
语种: 英语
英文关键词: ecosystem response
; metal bioaccumulation
; mine disaster
; physical limnology
; sediment loading
; turbidity current
Scopus关键词: Bioaccumulation
; Biochemistry
; Lakes
; Ocean currents
; Sediment transport
; Tailings
; Turbidity
; Ecosystem response
; Metal bioaccumulation
; Physical limnologies
; Sediment loading
; Turbidity current
; Loading
; inflow
; lake pollution
; mine waste
; pollutant transport
; runoff
; seiche
; tailings
; thermocline
; turbidity
; water level
; British Columbia
; Canada
; Quesnel Lake
英文摘要: On 4 August 2014, a catastrophic breach of the Mount Polley mine tailings impoundment released ∼25Mm3 of tailings and water and scoured an unknown quantity of overburden into the West Basin of Quesnel Lake. We document Quesnel Lake and Quesnel River observations for 2months postspill. Breach inflows raised Quesnel Lake by 7.7cm, equivalent to ∼21Mm3. The West Basin hypolimnion was modified immediately, exhibiting increased temperature (∼5°C to 6-7.5°C), conductivity (110 to 160μS/cm), and turbidity (<1 to 200-1000 nephelometric turbidity units (NTU)). Cooscillating seiches moved West Basin hypolimnetic water both westward and eastward contaminating the Main Basin. Postspill, high-turbidity water propagated eastward (∼1cm/s), introducing a persistent ∼20m thick layer below the thermocline and an ∼30m thick layer at the bottom. The contaminant introduction, mobilization, and bioaccumulation may pose risks to resident and anadromous fish stocks, which support recreational, commercial, and First Nations fisheries. Key Points Hypolimnetic increase in temperature and turbidity due to a mine tailings spill Stratification and seiching promote and distribute fine-grained sediment plume Physical, biological and chemical implications for a near-pristine lake ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930480538&doi=10.1002%2f2015GL063345&partnerID=40&md5=105472267d7f8b7dbcb41475548a1965
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8322
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Geography Program, University of Northern British Columbia, Prince George, BC, Canada
Recommended Citation:
Petticrew E.L.,Albers S.J.,Baldwin S.A.,et al. The impact of a catastrophic mine tailings impoundment spill into one of North America's largest fjord lakes: Quesnel Lake, British Columbia, Canada[J]. Geophysical Research Letters,2015-01-01,42(9).