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Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity
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| Zeitschriftentitel: | Journal of Glaciology |
|---|---|
| Personen und Körperschaften: | , |
| In: | Journal of Glaciology, 2022, S. 1-16 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Cambridge University Press (CUP)
|
| Schlagwörter: |
| author_facet |
Oggier, Marc Eicken, Hajo Oggier, Marc Eicken, Hajo |
|---|---|
| author |
Oggier, Marc Eicken, Hajo |
| spellingShingle |
Oggier, Marc Eicken, Hajo Journal of Glaciology Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity Earth-Surface Processes |
| author_sort |
oggier, marc |
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Oggier, Marc Eicken, Hajo 0022-1430 1727-5652 Cambridge University Press (CUP) Earth-Surface Processes http://dx.doi.org/10.1017/jog.2022.1 <jats:title>Abstract</jats:title> <jats:p>Sea-ice pore microstructure constrains ice transport properties, affecting fluid flow relevant to oil-in-ice transport and biogeochemical processes. Motivated by a lack of pore microstructural data, in particular for granular ice and across the seasonal cycle, throat size, tortuosity, connectivity, and other microstructural variables were derived from X-ray computed tomography for brine-filled pores in seasonal landfast ice off northern Alaska. Data were obtained for granular and columnar ice during the ice growth, transition, and melt season. While granular ice exhibits a more heterogeneous pore space than columnar ice, pore and throat size distributions are comparable. The greater tortuosity of pores in granular (1.2 < <jats:italic>τ</jats:italic><jats:sub>g</jats:sub> < 1.7) compared to columnar ice (1.0 < <jats:italic>τ</jats:italic><jats:sub>c</jats:sub> < 1.1) compounded with a less interconnected pore space translates into lower permeability for granular ice during the growth season for a given porosity. The microstructural data explain findings of granular ice hindering vertical oil-in-ice transport during ice growth and transition stage. With granular ice more frequent in the changing Arctic, data from studies such as this are needed to inform improved modeling of porosity-permeability relationships.</jats:p> Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity Journal of Glaciology |
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10.1017/jog.2022.1 |
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Journal of Glaciology |
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| title |
Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| title_unstemmed |
Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| title_full |
Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| title_fullStr |
Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| title_full_unstemmed |
Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| title_short |
Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| title_sort |
seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| topic |
Earth-Surface Processes |
| url |
http://dx.doi.org/10.1017/jog.2022.1 |
| publishDate |
2022 |
| physical |
1-16 |
| description |
<jats:title>Abstract</jats:title>
<jats:p>Sea-ice pore microstructure constrains ice transport properties, affecting fluid flow relevant to oil-in-ice transport and biogeochemical processes. Motivated by a lack of pore microstructural data, in particular for granular ice and across the seasonal cycle, throat size, tortuosity, connectivity, and other microstructural variables were derived from X-ray computed tomography for brine-filled pores in seasonal landfast ice off northern Alaska. Data were obtained for granular and columnar ice during the ice growth, transition, and melt season. While granular ice exhibits a more heterogeneous pore space than columnar ice, pore and throat size distributions are comparable. The greater tortuosity of pores in granular (1.2 < <jats:italic>τ</jats:italic><jats:sub>g</jats:sub> < 1.7) compared to columnar ice (1.0 < <jats:italic>τ</jats:italic><jats:sub>c</jats:sub> < 1.1) compounded with a less interconnected pore space translates into lower permeability for granular ice during the growth season for a given porosity. The microstructural data explain findings of granular ice hindering vertical oil-in-ice transport during ice growth and transition stage. With granular ice more frequent in the changing Arctic, data from studies such as this are needed to inform improved modeling of porosity-permeability relationships.</jats:p> |
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| description | <jats:title>Abstract</jats:title> <jats:p>Sea-ice pore microstructure constrains ice transport properties, affecting fluid flow relevant to oil-in-ice transport and biogeochemical processes. Motivated by a lack of pore microstructural data, in particular for granular ice and across the seasonal cycle, throat size, tortuosity, connectivity, and other microstructural variables were derived from X-ray computed tomography for brine-filled pores in seasonal landfast ice off northern Alaska. Data were obtained for granular and columnar ice during the ice growth, transition, and melt season. While granular ice exhibits a more heterogeneous pore space than columnar ice, pore and throat size distributions are comparable. The greater tortuosity of pores in granular (1.2 < <jats:italic>τ</jats:italic><jats:sub>g</jats:sub> < 1.7) compared to columnar ice (1.0 < <jats:italic>τ</jats:italic><jats:sub>c</jats:sub> < 1.1) compounded with a less interconnected pore space translates into lower permeability for granular ice during the growth season for a given porosity. The microstructural data explain findings of granular ice hindering vertical oil-in-ice transport during ice growth and transition stage. With granular ice more frequent in the changing Arctic, data from studies such as this are needed to inform improved modeling of porosity-permeability relationships.</jats:p> |
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| spelling | Oggier, Marc Eicken, Hajo 0022-1430 1727-5652 Cambridge University Press (CUP) Earth-Surface Processes http://dx.doi.org/10.1017/jog.2022.1 <jats:title>Abstract</jats:title> <jats:p>Sea-ice pore microstructure constrains ice transport properties, affecting fluid flow relevant to oil-in-ice transport and biogeochemical processes. Motivated by a lack of pore microstructural data, in particular for granular ice and across the seasonal cycle, throat size, tortuosity, connectivity, and other microstructural variables were derived from X-ray computed tomography for brine-filled pores in seasonal landfast ice off northern Alaska. Data were obtained for granular and columnar ice during the ice growth, transition, and melt season. While granular ice exhibits a more heterogeneous pore space than columnar ice, pore and throat size distributions are comparable. The greater tortuosity of pores in granular (1.2 < <jats:italic>τ</jats:italic><jats:sub>g</jats:sub> < 1.7) compared to columnar ice (1.0 < <jats:italic>τ</jats:italic><jats:sub>c</jats:sub> < 1.1) compounded with a less interconnected pore space translates into lower permeability for granular ice during the growth season for a given porosity. The microstructural data explain findings of granular ice hindering vertical oil-in-ice transport during ice growth and transition stage. With granular ice more frequent in the changing Arctic, data from studies such as this are needed to inform improved modeling of porosity-permeability relationships.</jats:p> Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity Journal of Glaciology |
| spellingShingle | Oggier, Marc, Eicken, Hajo, Journal of Glaciology, Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity, Earth-Surface Processes |
| title | Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| title_full | Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| title_fullStr | Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| title_full_unstemmed | Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| title_short | Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| title_sort | seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| title_unstemmed | Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity |
| topic | Earth-Surface Processes |
| url | http://dx.doi.org/10.1017/jog.2022.1 |