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Summary
| Description |
English: A schematic that shows how the pressure-dependent depression of the freezing point of seawater can lead to the formation of supercooled seawater near the surface adjacent to large, thick, floating Antarctic ice shelves. Where seawater interacts with ice, it must come to the equilibrium in-situ freezing point at that depth. If the water then moves upwards in the water column, its temperature will be below the in-situ freezing point at these shallower depths - it will be supercooled. This mechanism is driven by thermohaline circulation, and may be referred to as an "ice pump". Supercooling (being slightly below the in-situ freezing point) drives the formation of anchor ice on the seafloor adjacent to ice shelves. No horizontal scale is provided or appropriate; the horizontal dimension represented in this schematic may be as large as 1000 km if representing the the Ross Ice shelf and Ross Sea. Also, note annual sea ice thickness may be 1-3m, which is not well-represented here. |
| Date | |
| Source |
Using Adobe Illustrator |
| Author | Paul A. Cziko Pcziko |
- Other information
English: Created by Paul A. Cziko
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:15, 5 October 2016 | | 1,558 × 884 (120 KB) | Cmdrjameson | Compressed with pngout. Reduced by 100kB (45% decrease). |
| 20:29, 4 July 2012 |  | 1,558 × 884 (220 KB) | Pcziko | {{subst:Upload marker added by en.wp UW}} {{Information |Description = {{en|A schematic that shows how the pressure-dependent depression of the freezing point of seawater leads to the formation of supercooled seawater near the surface adjacent to large... |
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