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Lambert Glacier and Amery Ic
…
The Lambert Glacier, seen in
…
2/20/01
| Date |
2/20/01 |
| Description |
The Lambert Glacier, seen in the center of this image, is one of the largest and longest of Antarctica's glaciers. It drains about 900,000 square kilometers (560,000 square miles) of East Antarctica. On the southern half of the image, several smaller ice streams, channeled by numerous exposed mountains including the Mawson Escarpment to the east, merge into the Lambert, which broadens as it eventually flows into the ocean and forms the Amery Ice Shelf. The Lambert has clearly visible surface flowlines, which extend hundreds of kilometers into the interior. In the center section, isolated features on the ice shelf that appear bright in the radar image are likely due to past occurrences of surface meltwater accumulating into small lakes and troughs. This mosaic was derived from RADARSAT imagery obtained during the 1997 Antarctic Mapping Mission and shows an area approximately 900 kilometers by 675 kilometers (560 by 415 miles). The Lambert Glacier is centered at approximately 72 degrees south latitude and 67.5 degrees east longitude. The Antarctic Mapping Mission is a joint project between NASA and the Canadian Space Agency. The project is led by Ohio State University in Columbus in partnership with the Alaska Synthetic Aperture Radar (SAR) Facility at the University of Alaska Fairbanks, NASA's Jet Propulsion Laboratory, Pasadena, Calif., and the Vexcel Corporation, Boulder, Colo. The Canadian Space Agency's RADARSAT-1 satellite carries a synthetic aperture radar, an imaging radar sensor that operates at C-band (5.3 GHz frequency) with horizontal transmit-horizontal receive polarization from an orbital altitude of about 800 kilometers (500 miles). The 1997 Antarctic Mapping Mission took place between Sept. 19 and Oct. 14 and mapped the entire Antarctic continent. The 2000 Antarctic Mapping Mission lasted from Sept. 3 to Nov. 4 and obtained complete coverage of Antarctica north of 82 degrees south latitude. Photo Credit: Canadian Space Agency/NASA/Ohio State University, Jet Propulsion Laboratory, Alaska SAR facility # # # # # |
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Antarctic Peninsula
The Antarctica Peninsula is
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2/20/01
| Date |
2/20/01 |
| Description |
The Antarctica Peninsula is the furthest north extension of the Antarctic continent and is exposed to slightly warmer climate conditions than the greater continent. This mosaic from the 2000 Antarctic Mapping Mission shows most of the peninsula. The blue line is the coastline seen in the 1997 Antarctic Mapping Mission. The broad Larsen Ice Shelf lies to the east, extending into the Weddell Sea, and smaller ice shelves including the Wordie and George VI are in the southwest corner. The northern Larsen Shelf has been retreating since the 1960s, with major collapses in the 1990s. Warming in both the air and ocean underlying the ice shelves leads to increased fracturing and eventually calving of the ice shelf fronts into icebergs. The 1995 Larsen calving events were due to anomalously warm summer temperatures in the early 1990s. The warming noted in the Antarctica Peninsula, as measured from several research stations located there, is not sufficient to affect the thicker and more extensive West Antarctic ice shelves to the south on the main continent. The two RADARSAT mosaics from 1997 and 2000 Antarctic imaging campaigns provide highly accurate snapshots of this rapidly changing region of the greater Antarctic continent. The Antarctic Mapping Mission is a joint project between NASA and the Canadian Space Agency. The project is led by Ohio State University in Columbus in partnership with the Alaska Synthetic Aperture Radar (SAR) Facility at the University of Alaska Fairbanks, NASA's Jet Propulsion Laboratory, Pasadena, Calif., and the Vexcel Corporation, Boulder, Colo. The Canadian Space Agency's RADARSAT-1 satellite carries a synthetic aperture radar, an imaging radar sensor that operates at C-band (5.3 GHz frequency) with horizontal transmit-horizontal receive polarization from an orbital altitude of about 800 kilometers (500 miles. The 1997 Antarctic Mapping Mission took place between Sept. 19 and Oct. 14 and mapped the entire Antarctic continent. The 2000 Antarctic Mapping Mission lasted from Sept. 3 to Nov. 4 and obtained complete coverage of Antarctica north of 82 degrees south latitude. Photo Credit: Canadian Space Agency/NASA/Ohio State University, Jet Propulsion Laboratory, Alaska SAR Facility # # # # # |
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Larsen Ice Shelf
This sub-image of the Antarc
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2/20/01
| Date |
2/20/01 |
| Description |
This sub-image of the Antarctic Peninsula from the 2000 Antarctic Mapping Mission focuses on the northern end of the Larsen Ice Shelf. The blue line shows the coastline in 1997, the red line in 1992, based on synthetic aperture radar imagery from the European Space Agency, and the yellow line in the mid-1970s. The northern Larsen has been retreating since the 1960s, with major collapses in the 1990s. The southern Larsen was advancing until a major collapse in 1995. Small areas, however, also show advancement since 1997, including a section near the Sobral Peninsula in the center of the image. These advancements may indicate early rebuilding of the overall extent of the Larsen Shelf. The two RADARSAT mosaics from 1997 and 2000 Antarctic imaging campaigns provide highly accurate snapshots of this rapidly changing region of the greater Antarctic continent. The Antarctic Mapping Mission is a joint project between NASA and the Canadian Space Agency. The project is led by Ohio State University in Columbus in partnership with the Alaska Synthetic Aperture Radar (SAR) Facility at the University of Alaska Fairbanks, NASA's Jet Propulsion Laboratory, Pasadena, Calif., and the Vexcel Corporation, Boulder, Colo. The Canadian Space Agency's RADARSAT-1 satellite carries a synthetic aperture radar, an imaging radar sensor that operates at C-band (5.3 GHz frequency) with horizontal transmit-horizontal receive polarization from an orbital altitude of about 800 kilometers (500 miles). The 1997 Antarctic Mapping Mission took place between Sept. 19 and Oct. 14 and mapped the entire Antarctic continent. The 2000 Antarctic Mapping Mission lasted from Sept. 3 to Nov. 4 and obtained complete coverage of Antarctica north of 82 degrees south latitude. Photo Credit: Canadian Space Agency/NASA/Ohio State University, Jet Propulsion Laboratory, Alaska SAR Facility # # # # # |
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Lambert Glacier Velocity Map
This image shows the movemen
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2/20/01
| Date |
2/20/01 |
| Description |
This image shows the movement of the Lambert Glacier. The ice velocity vectors were obtained by using RADARSAT SAR imagery from the 2000 Antarctic Mapping Mission. Yellow represents the areas of no motion, which are either exposed land or stationary ice. The smaller confluent glaciers have generally low velocities, shown in green, of 100-300 meters (330-980 feet) per year, which gradually increase as they flow down the rapidly changing continental slope into the upper reaches of the faster flowing Lambert Glacier. Most of the Lambert Glacier itself has velocities between 400-800 meters (1,310-2,620 feet) per year, with a slight slowing in the middle section. As the glacier extends across Amery Ice Shelf, velocities increase to 1000-1200 meters (3,280-3,937 feet) per year as the ice sheet spreads out and thins. Only a handful of in-situ velocity measurements have been previously reported of this huge glacier system. While the in-situ and radar-derived measurements appear to be qualitatively similar, the extent and accuracy of the new measurements are unprecedented and provide quantitative baselines for future comparisons. The ice velocities are obtained from pairs of images obtained 24 days apart, using a technique called radar interferometry. This technique enables a highly precise alignment of image pairs that provides accurate measurements of topography as well as surfaces that have changed or moved over the short time interval, including glaciers. The Antarctic Mapping Mission is a joint project between NASA and the Canadian Space Agency. The project is led by Ohio State University in Columbus in partnership with the Alaska Synthetic Aperture Radar (SAR) Facility at the University of Alaska Fairbanks, NASA's Jet Propulsion Laboratory, Pasadena, Calif., and the Vexcel Corporation, Boulder, Colo. The Canadian Space Agency's RADARSAT-1 satellite carries a synthetic aperture radar, an imaging radar sensor that operates at C-band (5.3 GHz frequency) with horizontal transmit-horizontal receive polarization from an orbital altitude of about 800 kilometers (500 miles). The 1997 Antarctic Mapping Mission took place between Sept. 19 and Oct. 14 and mapped the entire Antarctic continent. The 2000 Antarctic Mapping Mission lasted from Sept. 3 to Nov. 4 and obtained complete coverage of Antarctica north of 82 degrees south latitude. Photo Credit: Canadian Space Agency/NASA/Ohio State University, Jet Propulsion Laboratory, Alaska SAR facility # # # # # |
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Antarctica: Allen Hills Fly
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| Title |
Antarctica: Allen Hills Fly Over |
| Abstract |
RADARSAT lets Scientist see the frozen continent. |
| Completed |
1999-11-08 |
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Antarctica: Allen Hills Fly
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| Title |
Antarctica: Allen Hills Fly Over |
| Abstract |
RADARSAT lets Scientist see the frozen continent. |
| Completed |
1999-11-08 |
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Antarctica: Allen Hills Fly
…
| Title |
Antarctica: Allen Hills Fly Over |
| Abstract |
RADARSAT lets Scientist see the frozen continent. |
| Completed |
1999-11-08 |
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Antarctica: Allen Hills Fly
…
| Title |
Antarctica: Allen Hills Fly Over |
| Abstract |
RADARSAT lets Scientist see the frozen continent. |
| Completed |
1999-11-08 |
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Antarctica: Larsen Pre-shot
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| Title |
Antarctica: Larsen Pre-shot (with box) |
| Abstract |
This animation was used with the Larsen Ice Shelf images in animation #1400. |
| Completed |
1999-11-08 |
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Antarctica: Fimbul Ice Shelf
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| Title |
Antarctica: Fimbul Ice Shelf Preview |
| Completed |
1999-11-08 |
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Another View of Snow Dunes
| Title |
Another View of Snow Dunes |
| Abstract |
A close-up view of a field of snow dunes, then pulling back to show regions of the dunes across the continent. |
| Completed |
1999-11-08 |
|
Another View of Snow Dunes
| Title |
Another View of Snow Dunes |
| Abstract |
A close-up view of a field of snow dunes, then pulling back to show regions of the dunes across the continent. |
| Completed |
1999-11-08 |
|
Another View of Snow Dunes
| Title |
Another View of Snow Dunes |
| Abstract |
A close-up view of a field of snow dunes, then pulling back to show regions of the dunes across the continent. |
| Completed |
1999-11-08 |
|
Another View of Snow Dunes
| Title |
Another View of Snow Dunes |
| Abstract |
A close-up view of a field of snow dunes, then pulling back to show regions of the dunes across the continent. |
| Completed |
1999-11-08 |
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Antarctica: Fimbul Ice Shelf
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| Title |
Antarctica: Fimbul Ice Shelf Fly-over |
| Completed |
1999-11-08 |
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Antarctica: Fimbul Ice Shelf
…
| Title |
Antarctica: Fimbul Ice Shelf Fly-over |
| Completed |
1999-11-08 |
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East Antarctic Ice Streams #
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| Title |
East Antarctic Ice Streams #2 |
| Completed |
1999-11-08 |
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East Antarctic Ice Streams #
…
| Title |
East Antarctic Ice Streams #2 |
| Completed |
1999-11-08 |
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Moving Along Antarctica to t
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| Title |
Moving Along Antarctica to the South Pole |
| Abstract |
This animation was originally grouped with animation #1005. |
| Completed |
1999-11-08 |
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Prelude and South Pole
| Title |
Prelude and South Pole |
| Abstract |
This animation was released for two separate stories. The first release was of the first 15 seconds (450 frames) as 'Prelude to Antarctica' and is stored in our database as animation 988. The entire animation was released as 'Tour of South Pole' and appears here. The animation was created by laying the Pathfinder data over the globe, RADARSAT data over Antarctica, and the South Pole inset at the South Pole. |
| Completed |
1999-11-08 |
|
Prelude and South Pole
| Title |
Prelude and South Pole |
| Abstract |
This animation was released for two separate stories. The first release was of the first 15 seconds (450 frames) as 'Prelude to Antarctica' and is stored in our database as animation 988. The entire animation was released as 'Tour of South Pole' and appears here. The animation was created by laying the Pathfinder data over the globe, RADARSAT data over Antarctica, and the South Pole inset at the South Pole. |
| Completed |
1999-11-08 |
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East Antarctic Ice Streams #
…
| Title |
East Antarctic Ice Streams #1 |
| Completed |
1999-11-08 |
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East Antarctic Ice Streams #
…
| Title |
East Antarctic Ice Streams #1 |
| Completed |
1999-11-08 |
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McMurdo Station, Mt. Erebus
| Title |
McMurdo Station, Mt. Erebus |
| Completed |
1999-11-08 |
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McMurdo Station, Mt. Erebus
| Title |
McMurdo Station, Mt. Erebus |
| Completed |
1999-11-08 |
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McMurdo Station, Mt. Erebus
| Title |
McMurdo Station, Mt. Erebus |
| Completed |
1999-11-08 |
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Antarctica: Snow Dunes
| Title |
Antarctica: Snow Dunes |
| Completed |
1999-11-08 |
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Antarctica: Snow Dunes
| Title |
Antarctica: Snow Dunes |
| Completed |
1999-11-08 |
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Antarctica: Snow Dunes
| Title |
Antarctica: Snow Dunes |
| Completed |
1999-11-08 |
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Antarctica: A Flying Tour of
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| Title |
Antarctica: A Flying Tour of the Frozen Continent |
| Abstract |
Narrated tour of Antarctica through the eyes of RADARSAT. Completed and accepted for the SIGGRAPH 2001 Computer Animation Festival. |
| Completed |
2001-03-20 |
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Antarctica: A Flying Tour of
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| Title |
Antarctica: A Flying Tour of the Frozen Continent |
| Abstract |
Narrated tour of Antarctica through the eyes of RADARSAT. Completed and accepted for the SIGGRAPH 2001 Computer Animation Festival. |
| Completed |
2001-03-20 |
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Antarctica: Dry Valleys
| Title |
Antarctica: Dry Valleys |
| Abstract |
Using the RADARSAT dataset of Antarctica, Scientist can visit the Dry Valleys, a cold and desert like area. |
| Completed |
1999-11-08 |
|
Antarctica: Dry Valleys
| Title |
Antarctica: Dry Valleys |
| Abstract |
Using the RADARSAT dataset of Antarctica, Scientist can visit the Dry Valleys, a cold and desert like area. |
| Completed |
1999-11-08 |
|
Antarctica: Dry Valleys
| Title |
Antarctica: Dry Valleys |
| Abstract |
Using the RADARSAT dataset of Antarctica, Scientist can visit the Dry Valleys, a cold and desert like area. |
| Completed |
1999-11-08 |
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Antarctica: Larsen Pre-shot
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| Title |
Antarctica: Larsen Pre-shot (without box) |
| Abstract |
This animation is a set up animation for editing in post production. It was used with images of the Larsen Ice Shelf in animation #1400. |
| Completed |
1999-11-08 |
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Byrd's Flight
| Title |
Byrd's Flight |
| Abstract |
The Ohio State University's Library web site notes 'As a navigational aviator, Byrd pioneered in the technology that would be the foundation for modern polar exploration and investigation. As a decorated and much celebrated hero, Byrd drew popular attention to areas of the world that became focal points of scientific investigation in numerous disciplines.' More information about Admiral Richard E. Byrd can be found at (http://www.lib.ohio-state.edu/arvweb/polar/byrd/byrd.htm) |
| Completed |
1999-11-08 |
|
Byrd's Flight
| Title |
Byrd's Flight |
| Abstract |
The Ohio State University's Library web site notes 'As a navigational aviator, Byrd pioneered in the technology that would be the foundation for modern polar exploration and investigation. As a decorated and much celebrated hero, Byrd drew popular attention to areas of the world that became focal points of scientific investigation in numerous disciplines.' More information about Admiral Richard E. Byrd can be found at (http://www.lib.ohio-state.edu/arvweb/polar/byrd/byrd.htm) |
| Completed |
1999-11-08 |
|
Byrd's Flight
| Title |
Byrd's Flight |
| Abstract |
The Ohio State University's Library web site notes 'As a navigational aviator, Byrd pioneered in the technology that would be the foundation for modern polar exploration and investigation. As a decorated and much celebrated hero, Byrd drew popular attention to areas of the world that became focal points of scientific investigation in numerous disciplines.' More information about Admiral Richard E. Byrd can be found at (http://www.lib.ohio-state.edu/arvweb/polar/byrd/byrd.htm) |
| Completed |
1999-11-08 |
|
East Antarctic Ice Stream Pa
…
| Title |
East Antarctic Ice Stream Path |
| Completed |
1999-11-08 |
|
Antarctica: Prelude
| Title |
Antarctica: Prelude |
| Completed |
1999-11-08 |
|
Antarctica: Prelude
| Title |
Antarctica: Prelude |
| Completed |
1999-11-08 |
|
Byrd Glacier Exhibit
| Title |
Byrd Glacier Exhibit |
| Abstract |
A physical model of this visualization is on display at the National Geographic Explorers Hall Museum in Washington D.C. 'Byrd Glacier plunges through a deep valley in the Transatlantic Mountains and onto the Ross Ice Shelf, dropping more than 4,300 feet over a distance of 112 miles. It remains a distinct ice stream all the way to the edge of the shelf, some 260 miles from the foot of the mountains to the open sea.' -National Geographic Magazine, February 2002 |
| Completed |
2001-07-13 |
|
Byrd Glacier Exhibit
| Title |
Byrd Glacier Exhibit |
| Abstract |
A physical model of this visualization is on display at the National Geographic Explorers Hall Museum in Washington D.C. 'Byrd Glacier plunges through a deep valley in the Transatlantic Mountains and onto the Ross Ice Shelf, dropping more than 4,300 feet over a distance of 112 miles. It remains a distinct ice stream all the way to the edge of the shelf, some 260 miles from the foot of the mountains to the open sea.' -National Geographic Magazine, February 2002 |
| Completed |
2001-07-13 |
|
Byrd Glacier Exhibit
| Title |
Byrd Glacier Exhibit |
| Abstract |
A physical model of this visualization is on display at the National Geographic Explorers Hall Museum in Washington D.C. 'Byrd Glacier plunges through a deep valley in the Transatlantic Mountains and onto the Ross Ice Shelf, dropping more than 4,300 feet over a distance of 112 miles. It remains a distinct ice stream all the way to the edge of the shelf, some 260 miles from the foot of the mountains to the open sea.' -National Geographic Magazine, February 2002 |
| Completed |
2001-07-13 |
|
Antarctica: Lake Vostok
| Title |
Antarctica: Lake Vostok |
| Abstract |
Using RADARSAT data of Antarctica, one can see the abandoned Russian station that is on top of a frozen Lake Vostok. |
| Completed |
1999-11-08 |
|
Antarctica: Lake Vostok
| Title |
Antarctica: Lake Vostok |
| Abstract |
Using RADARSAT data of Antarctica, one can see the abandoned Russian station that is on top of a frozen Lake Vostok. |
| Completed |
1999-11-08 |
|
Antarctica: Lake Vostok
| Title |
Antarctica: Lake Vostok |
| Abstract |
Using RADARSAT data of Antarctica, one can see the abandoned Russian station that is on top of a frozen Lake Vostok. |
| Completed |
1999-11-08 |
|
Antarctica: Larsen Ice Shelf
…
| Title |
Antarctica: Larsen Ice Shelf Side by Side Comparison |
| Abstract |
In 1978, scientists predicted that global warming would lead to a disintegration of Antarctic Peninsula ice shelves. Spaceborne data indicate that this prediction may be coming true. In these before and after images, note the dramatic change in the apparent shoreline. Scientists captured the first image using the ERS-1 satellite in 1992. As seen in the second image, collected by RADARSAT in 1997, huge changes have come to the coastline. In 1995, a 2000 square kilometer section of the ice shelf collapsed into thousands of fragments that eventually drifted out to sea. Researchers are still debating why the ice shelf broke up so dramatically, and what significance the break up has for interpreting local versus global changes to the environment. Theories include a series of warmer than usual summers which may have caused high levels of surface melting, or an overall climate warming trend. |
| Completed |
1999-11-08 |
|
Antarctica: Larsen Ice Shelf
…
| Title |
Antarctica: Larsen Ice Shelf Side by Side Comparison |
| Abstract |
In 1978, scientists predicted that global warming would lead to a disintegration of Antarctic Peninsula ice shelves. Spaceborne data indicate that this prediction may be coming true. In these before and after images, note the dramatic change in the apparent shoreline. Scientists captured the first image using the ERS-1 satellite in 1992. As seen in the second image, collected by RADARSAT in 1997, huge changes have come to the coastline. In 1995, a 2000 square kilometer section of the ice shelf collapsed into thousands of fragments that eventually drifted out to sea. Researchers are still debating why the ice shelf broke up so dramatically, and what significance the break up has for interpreting local versus global changes to the environment. Theories include a series of warmer than usual summers which may have caused high levels of surface melting, or an overall climate warming trend. |
| Completed |
1999-11-08 |
|
Byrd's Flight Path
| Title |
Byrd's Flight Path |
| Abstract |
The Ohio State University's Library web site notes 'As a navigational aviator, Byrd pioneered in the technology that would be the foundation for modern polar exploration and investigation. As a decorated and much celebrated hero, Byrd drew popular attention to areas of the world that became focal points of scientific investigation in numerous disciplines.' More information about Admiral Richard E. Byrd can be found at (http://www.lib.ohio-state.edu/arvweb/polar/byrd/byrd.htm). The next animation, #1001, shows Byrd's plane as it follows the flight path presented in this animation. |
| Completed |
1999-11-08 |
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