气候变化领域集成服务门户(CCPortal): Electrical Conductivity of Aqueous Magnesium Sulfate at High Pressure and Low Temperature With Application to Ganymede's Subsurface Ocean

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DOI	10.1029/2020GL090192
	Electrical Conductivity of Aqueous Magnesium Sulfate at High Pressure and Low Temperature With Application to Ganymede's Subsurface Ocean
	Pan Y.; Yong W.; Secco R.A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	Ganymede has strong evidence of a subsurface ocean primarily composed of MgSO4. We conducted experimental measurements of the electrical conductivity of aqueous MgSO4 at 200–1,200 MPa and 243–295 K in a multianvil press, simulating the high-pressure and low-temperature (HPLT) conditions of Ganymede's subsurface ocean. A numerical model is proposed with logσ = − 3.1605+940.931/T+0.8986logc+2logΛ0 − log(5Λ0+2695c1/2), where σ is electrical conductivity in S/m, T is temperature in K, c is molar concentration in mol/L, and Λ0 is limiting equivalent conductance in S·cm2·equiv−1. We used this model to generate electrical conductivity curves up to 500 km deep in Ganymede and found that the values are lower than previously predicted. Our novel experimental methods demonstrate access to the HPLT environment of liquid samples that expands our ability for experimental simulation of icy ocean worlds in the outer solar system. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Electric conductivity; Magnesium compounds; Molar concentration; Oceanography; Temperature; Thermal logging; Electrical conductivity; Experimental methods; Experimental simulations; Low temperatures; Magnesium sulfate; Multi-anvil press; Outer solar system; Sub-surface ocean; Sulfur compounds; aqueous solution; electrical conductivity; Ganymede; high pressure; low temperature; magnesium; molecular analysis; subsurface flow; sulfate
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169526
作者单位	Department of Earth Sciences, University of Western Ontario, London, ON, Canada
推荐引用方式 GB/T 7714	Pan Y.,Yong W.,Secco R.A.. Electrical Conductivity of Aqueous Magnesium Sulfate at High Pressure and Low Temperature With Application to Ganymede's Subsurface Ocean[J],2020,47(21).
APA	Pan Y.,Yong W.,&Secco R.A..(2020).Electrical Conductivity of Aqueous Magnesium Sulfate at High Pressure and Low Temperature With Application to Ganymede's Subsurface Ocean.Geophysical Research Letters,47(21).
MLA	Pan Y.,et al."Electrical Conductivity of Aqueous Magnesium Sulfate at High Pressure and Low Temperature With Application to Ganymede's Subsurface Ocean".Geophysical Research Letters 47.21(2020).