Icebergs are generated when large pieces are breaking off from an ice shelf. They can be 10s to several 1000 m in diameter and up to over 400 m thick. Waves and water wash and melt the larger icebergs until they turn around and break into smaller pieces. The result are different forms and shapes.
Species (common):
Year: 2010
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: Antarctica:AmundsenSea
Investigator: Frank Nitsche
Expedition: OSO0910
Chief Scientist: John Anderson
Species:

Tabular iceberg in the Amundsen Sea. Large tabular icebergs are generated when large pieces are breaking off from an ice shelf. They can be 10s to several 1000 m in diameter and up to over 400 m thick. Only about 1/10th of the iceberg is visible above water 9/10 are below water.
Species (common):
Year: 2010
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: Antarctica:AmundsenSea
Investigator: Frank Nitsche
Expedition: OSO0910
Chief Scientist: John Anderson
Species:

The Pine Island Glacier is one of the major ice streams draining the Antarctic ice sheet. It also shows currently the highest thinning rates among the large Antarctic glaciers. The images shows the edge of the ice shelf, the floating part of the glacier. The present grounding line is about 80 km inland. The visible caves are likely created by meltwater streaming out from underneath the ice shelf.
Species (common):
Year: 2009
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: Antarctica:AmundsenSea
Investigator: Frank Nitsche

Sea ice forms when the ocean freezes in the winter. In contrast to ice shelves it is only several meters thick. Wind can move pieces of sea ice around. When sea ice is pushed together by the wind pressure ridges are formed as shown in this image. If the ridges are older they get covered by snow
Species (common):
Year: 2009
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: Antarctica:AmundsenSea
Investigator: Frank Nitsche
Expedition: NBP0901
Chief Scientist: Stan Jacobs
Species:

Icebergs are generated when large pieces are breaking off from an ice shelf. They can be 10s to several 1000 m in diameter and up to over 400 m thick. Waves and water wash and melt the larger icebergs until they turn around and break into smaller pieces. The result are different forms and shapes.
Species (common):
Year: 2007
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: Antarctica:AmundsenSea
Investigator: Frank Nitsche
Expedition: NBP0702
Chief Scientist: Stan Jacobs
Species:

Icebergs are generated when large pieces are breaking off from an ice shelf. They can be 10s to several 1000 m in diameter and up to over 400 m thick. Waves and water wash and melt the larger icebergs until they turn around and break into smaller pieces. The result are different forms and shapes. Sometimes, like here, icebergs contain with frozen layers of algaes
Species (common):
Year: 2007
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: Antarctica:AmundsenSea
Investigator: Frank Nitsche
Expedition: NBP0702
Chief Scientist: Stan Jacobs

View of the edge of Pine Island Ice Shelf, West Antarctica. This is the floating extension of the Pine Island Glacier, which is currently one of the fastest thinning ice streams of the West Antarctic ice streams. To study the processes and history of this glacier scientific expeditions visited this glacier in 2007 and 2009.
Species (common):
Year: 2007
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: Antarctica:AmundsenSea
Investigator: Frank Nitsche
Expedition: NBP0901
Chief Scientist: Stan Jacobs
Species:

Sunset over the edge of Pine Island Ice Shelf, West Antarctica. This is the floating extention of the Pine Island Glacier, which is curently one of the fastes thinning ice streams of the West Antarctic ice streams. To study the processes and history of this glacier scientific expeditions visited this glacier in 2007 and 2009.
Species (common):
Year: 2007
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: Antarctica:AmundsenSea
Investigator: Frank Nitsche
Expedition: NBP0702
Chief Scientist: Stan Jacobs
Species:

Sea ice forms when the ocean freezes in the winter. Under calm wind conditions the water freezes in sheets (Nilas). These sheets can move over and into each.
Species (common):
Year: 2007
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: Antarctica:AmundsenSea
Investigator: Frank Nitsche
Expedition: NBP0702
Chief Scientist: Stan Jacobs
Species:

Sea ice forms when the ocean freezes in the winter. Wind moves thin sheets of sea ice, break it up, and pushes it together. Sometimes ice ridges form. This process generates beautiful pattern and geometric forms.
Species (common):
Year: 2006
Details:
Media Type: Photograph
Data Type: Photograph
Device Type: Camera:Digital
Feature: Antarctica:AmundsenSea
Investigator: Frank Nitsche
Expedition:
Chief Scientist:
Species: