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DOI | 10.1029/2020GL087645 |
Laboratory Electrical Conductivity of Marine Gas Hydrate | |
Steven Constable; Ryan Lu; Laura A. Stern; Wyatt L. Du Frane; Jeffery J. Roberts | |
2020-08-04 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Methane hydrate was synthesized from pure water ice and flash frozen seawater, with varying amounts of sand or silt added. Electrical conductivity was determined by impedance spectroscopy, using equivalent circuit modeling to separate the effects of electrodes and to gain insight into conduction mechanisms. Silt and sand increase the conductivity of pure hydrate, we infer by contaminant NaCl contributing to conduction in hydrate, to values in agreement with resistivities observed in well logs through hydrate The addition of silt and sand lowers the conductivity of hydrate synthesized from seawater by an amount consistent with Archie's Law. All samples were characterized using cryogenic scanning electron microscopy and energy dispersive spectroscopy, which show good connectivity of salt and brine phases. Electrical conductivity measurements of pure hydrate and hydrate mixed with silt during pressure‐induced dissociation supports previous conclusions that sediment increases dissociation rate. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/287708 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Steven Constable,Ryan Lu,Laura A. Stern,et al. Laboratory Electrical Conductivity of Marine Gas Hydrate[J]. Geophysical Research Letters,2020. |
APA | Steven Constable,Ryan Lu,Laura A. Stern,Wyatt L. Du Frane,&Jeffery J. Roberts.(2020).Laboratory Electrical Conductivity of Marine Gas Hydrate.Geophysical Research Letters. |
MLA | Steven Constable,et al."Laboratory Electrical Conductivity of Marine Gas Hydrate".Geophysical Research Letters (2020). |
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