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Ice rise

Clearly defined elevation of an ice shelf

Sketch of the Antarctic coast with glaciological and oceanographic processes, showing ice rises within ice shelf

An ice rise is a clearly defined elevation of the otherwise very much flatter ice shelf, typically dome-shaped and rising several hundreds of metres above the surrounding ice shelf .{{cite journal | display-authors = 5

An island within and totally covered by the ice shelf may appear the same as an ice rise. Elaborate measurements may be required to distinguish between these two geographic features.

Although ice rises are typically located within the ice shelf area, they can partially face the open sea. Ice rises are found within the ice shelves of Antarctica. There is also one found associated with the Ward Hunt Ice Shelf and it is called the Ward Hunt Ice Rise. The largest ice rises exceed dimensions of 50 by, or 10000 km2 in area. Some ice rises are incorrectly called islands, but also a few totally ice-covered islands within an ice shelf are also called ice rises.

Ice rises are of scientific significance because they (a) exert considerable buttressing, which affects the existence and rate of the marine ice sheet instability; and (b) they are very good sites for ice coring,{{cite journal | display-authors = 5

Ice rises, grouped by ice shelf, clockwise starting in East Antarctica:

Brunt Ice Shelf
- McDonald Ice Rumples
Riiser-Larsen Ice Shelf
- Lyddan Island
King Baudouin Ice Shelf
- Derwael Ice Rise
Amery Ice Shelf
- Budd Ice Rumples
- IR1 to IR5 near the ice front {{cite journal | display-authors = 4
Shackleton Ice Shelf
- Green Ice Rises (the northernmost ice rise, at 66°21'S)
- Harrisson Ice Rises
Ross Ice Shelf
- Crary Ice Rise (the southernmost ice rise, at 82°56'S)
- Roosevelt Island
Crosson Ice Shelf
- Davis Ice Rise
Bach Ice Shelf
- Burgess Ice Rise
- Dvořák Ice Rise
- Ives Ice Rise
- Landy Ice Rises
George VI Ice Shelf
- Martin Ice Rise
Wilkins Ice Shelf
- Petrie Ice Rises
- Schaus Ice Rises
- Vere Ice Rise
Wordie Ice Shelf
- Coker Ice Rise
- Linchpin Ice Rise
- Miller Ice Rise
- Napier Ice Rise
- Reynolds Ice Rise
- Wade Ice Rise
Müller Ice Shelf
- Humphreys Ice Rise
Larsen-C Ice Shelf
- Bawden Ice Rise
- Gipps Ice Rise
- Tharp Ice Rise
Filchner-Ronne Ice Shelf
- Belgrano II
- Berkner Island
- Bungenstock Ice Rise
- Doake Ice Rumples
- Dott Ice Rise
- Fletcher Ice Rise
- Fowler Ice Rise
- Hemmen Ice Rise
- Henry Ice Rise
- Kealey Ice Rise
- Kershaw Ice Rumples
- Korff Ice Rise
- Skytrain Ice Rise

Henry and Korff Ice Rises are the largest ice rises, with areas of roughly 1 500 to 1 600 km2.

References

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

bodies-of-ice antarctica-related-lists ice-shelves ice-rises

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