Thermal evolution of permeability and microstructure in sea ice
The fluid permeability k of sea ice constrains a broad range of processes, such as the growth and decay of seasonal ice, the evolution of summer ice albedo, and biomass build‐up. Such processes are critical to how sea ice and associated ecosystems respond to climate change. However, studies of k and...
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| Veröffentlicht in: | Geophysical research letters 2007-08, Vol.34 (16), p.n/a |
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| container_title | Geophysical research letters |
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| creator | Golden, K. M. Eicken, H. Heaton, A. L. Miner, J. Pringle, D. J. Zhu, J. |
| description | The fluid permeability k of sea ice constrains a broad range of processes, such as the growth and decay of seasonal ice, the evolution of summer ice albedo, and biomass build‐up. Such processes are critical to how sea ice and associated ecosystems respond to climate change. However, studies of k and its dependence on brine porosity ϕ and microstructure are sparse. Here we present a multifaceted theory for k(ϕ) which closely captures laboratory and field data. X‐ray computed tomography provides an unprecedented look at the brine phase and its connectivity. We find that sea ice displays universal transport properties remarkably similar to crustal rocks, yet over a much narrower temperature range. Our results yield simple parameterizations for fluid transport in terms of temperature and salinity, and permit more realistic representations of sea ice in global climate and biological models. |
| doi_str_mv | 10.1029/2007GL030447 |
| format | Article |
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J.</creatorcontrib><creatorcontrib>Zhu, J.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Golden, K. M.</au><au>Eicken, H.</au><au>Heaton, A. L.</au><au>Miner, J.</au><au>Pringle, D. J.</au><au>Zhu, J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermal evolution of permeability and microstructure in sea ice</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2007-08-28</date><risdate>2007</risdate><volume>34</volume><issue>16</issue><epage>n/a</epage><issn>0094-8276</issn><eissn>1944-8007</eissn><coden>GPRLAJ</coden><abstract>The fluid permeability k of sea ice constrains a broad range of processes, such as the growth and decay of seasonal ice, the evolution of summer ice albedo, and biomass build‐up. Such processes are critical to how sea ice and associated ecosystems respond to climate change. However, studies of k and its dependence on brine porosity ϕ and microstructure are sparse. Here we present a multifaceted theory for k(ϕ) which closely captures laboratory and field data. X‐ray computed tomography provides an unprecedented look at the brine phase and its connectivity. 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| ispartof | Geophysical research letters, 2007-08, Vol.34 (16), p.n/a |
| issn | 0094-8276 1944-8007 |
| language | eng |
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| source | Wiley Free Content; Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; EZB-FREE-00999 freely available EZB journals |
| subjects | Earth sciences Earth, ocean, space Exact sciences and technology microstructure permeability sea ice |
| title | Thermal evolution of permeability and microstructure in sea ice |
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