| 21. | During spring and early winter, rivers may become impassable due to freezing or thawing ice flows.
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| 22. | On one occasion the base's HUP-1's retrieved 17 fishermen stranded on an ice flow during a snowstorm.
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| 23. | Glacier retreat has been observed in these outlet glaciers, resulting in an increase of the ice flow rate.
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| 24. | Seasonal melt ponded and penetrating under glaciers shows seasonal acceleration and deceleration of ice flows affecting whole icesheets.
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| 25. | Regular measurements of the ice flow coordinates provide the data on the direction and speed of its drift.
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| 26. | The three aided Aleu in her return to the ice flow, resulting in her takeover of the pack's future.
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| 27. | However, Perutz found a problem : ice flows slowly, in what is known as sag unless it was cooled to.
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| 28. | Another danger now looms-- icebergs-- since the racers are coming up to the northern limits of the Antarctic ice flow.
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| 29. | Then, according to official reports, a block of ice fell from Kolka ice flow, bringing with it mud and large boulders.
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| 30. | The fjord has no marked threshold as the glacial ice flow joined that from the Hylsfjord and flowed into the Sandsfjord.
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