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Pine Island Glacier, Antarct …
These two images of Pine Isl …
4/3/01
Date 4/3/01
Description These two images of Pine Island Glacier in Antarctica show the recently discovered 25-kilometer (15-mile) long crack that scientists expect will turn into a large iceberg within the next 18 months. The views from NASA's Multi-angle Imaging SpectroRadiometer (MISR) on the Terra satellite also reveal differences in the ice sheet's surface texture, highlighting surface fractures and enabling distinction of rough crevasses from smooth blue ice. The image data shown was acquired on December 12, 2000, during Terra orbit 5246. At left is a conventional, true-color image from the downward-looking (nadir) camera. The false-color image at right is a composite of red-band data taken by the MISR forward 60-degree, nadir, and aftward 60-degree cameras, displayed in red, green and blue, respectively. Color variations in the true-color image at left highlight spectral differences. In the multi-angle composite, on the other hand, color variations act as a proxy for differences in the angular reflectance properties of the scene. In this representation, clouds show up as light purple. Blue to orange gradations on the surface indicate a transition in ice texture from smooth to rough. For example, the bright orange carrot-like features are rough crevasses on the glacier's tongue. In the conventional nadir view, the blue ice labeled "rough crevasses"' and "smooth blue ice" are similarly colored, but the multi-angle composite reveals their different textures, with the smoother ice appearing dark purple instead of orange. This could be an indicator of different mechanisms by which this ice is exposed. The multi-angle view also reveals subtle roughness variations on the frozen sea ice between the glacier and the open water in Pine Island Bay. To the left of the 'icebergs' label are chunks of floating ice. Smaller icebergs embedded in the frozen sea ice are visible below and to the right of the label. These small icebergs are associated with dark streaks. Analysis of the illumination geometry suggests that these streaks are surface features, not shadows. Wind-driven motion and thinning of the sea ice in the vicinity of the icebergs are a possible explanation. Recently, Robert Bindschadler, a glaciologist at the NASA Goddard Space Flight Center discovered in Landsat 7 imagery a newly-formed crack traversing the Pine Island Glacier. This crack is visible as an off-vertical dark line in the MISR nadir view. In the multi-angle composite, the crack and other stress fractures show up very clearly in bright orange. Radar observations of Pine Island Glacier in the 1990's showed the glacier to be shrinking, and the newly discovered crack is expected to eventually lead to the calving of a major iceberg. MISR was built and is managed by NASA's Jet Propulsion Laboratory, Pasadena, Calf., for NASA's Office of Earth Science, Washington, D.C. The Terra satellite is managed by NASA's Goddard Space Flight Center, Greenbelt, Md. JPL is a division of the California Institute of Technology. Image credit: NASA/JPL/GSFC/LaRC, MISR Team #####
Landsat 7 Looks at Coral Ree …
Title Landsat 7 Looks at Coral Reefs: (1 of 2)
Abstract Coral forms off shore from volcanic islands in tropical latitudes, developing a barrier reef that's separated by a growing lagoon.But over time, while the surrounding ocean wears away the main body of the island, the coral ring remains.
Completed 2000-10-23
Landsat 7 Looks at Coral Ree …
Title Landsat 7 Looks at Coral Reefs: (1 of 2)
Abstract Coral forms off shore from volcanic islands in tropical latitudes, developing a barrier reef that's separated by a growing lagoon.But over time, while the surrounding ocean wears away the main body of the island, the coral ring remains.
Completed 2000-10-23
Landsat 7 Looks at Coral Ree …
Title Landsat 7 Looks at Coral Reefs: (1 of 2)
Abstract Coral forms off shore from volcanic islands in tropical latitudes, developing a barrier reef that's separated by a growing lagoon.But over time, while the surrounding ocean wears away the main body of the island, the coral ring remains.
Completed 2000-10-23
Landsat 7 Looks at Coral Ree …
Title Landsat 7 Looks at Coral Reefs: (1 of 2)
Abstract Coral forms off shore from volcanic islands in tropical latitudes, developing a barrier reef that's separated by a growing lagoon.But over time, while the surrounding ocean wears away the main body of the island, the coral ring remains.
Completed 2000-10-23
A Pop-up of the Arizona Fire …
Title A Pop-up of the Arizona Fires
Abstract RODEO AND CHEDISKI FIRES IN ARIZONA - On June 21, 2002, the Rodeo and Chediski Fires in east-central Arizona were still two separate fires. This true-color scene from the Enhanced Thematic Mapper Plus aboard the Landsat 7 satellite shows the massive quantities of smoke streaming northward from the fires, which are burning about 100 miles east-northeast of Phoenix. The smaller Chediski Fire is on the right, and the Rodeo Fire is on the left. Over the weekend of June 22, the two fires merged into a single 300,000+ acre blaze.
Completed 2002-06-24
A Pop-up of the Arizona Fire …
Title A Pop-up of the Arizona Fires
Abstract RODEO AND CHEDISKI FIRES IN ARIZONA - On June 21, 2002, the Rodeo and Chediski Fires in east-central Arizona were still two separate fires. This true-color scene from the Enhanced Thematic Mapper Plus aboard the Landsat 7 satellite shows the massive quantities of smoke streaming northward from the fires, which are burning about 100 miles east-northeast of Phoenix. The smaller Chediski Fire is on the right, and the Rodeo Fire is on the left. Over the weekend of June 22, the two fires merged into a single 300,000+ acre blaze.
Completed 2002-06-24
Seasonal Change around Salt …
Title Seasonal Change around Salt Lake City: Winter
Abstract Landsat 7 imagery is combined here with terrain elevation data to create a view of the Salt Lake City area, looking towards the West. This image was taken in the winter of 2001 and can be compared to identical animations using images taken at other times of the year.
Completed 2002-01-30
Seasonal Changes: Heber City …
Title Seasonal Changes: Heber City, Utah
Abstract Landsat 7 views Heber City, Utah, as it goes through the seasonal changes.
Completed 2001-10-20
Seasonal Changes: Heber City …
Title Seasonal Changes: Heber City, Utah
Abstract Landsat 7 views Heber City, Utah, as it goes through the seasonal changes.
Completed 2001-10-20
Seasonal Changes: Heber City …
Title Seasonal Changes: Heber City, Utah
Abstract Landsat 7 views Heber City, Utah, as it goes through the seasonal changes.
Completed 2001-10-20
Seasonal Changes: Heber City …
Title Seasonal Changes: Heber City, Utah
Abstract Landsat 7 views Heber City, Utah, as it goes through the seasonal changes.
Completed 2001-10-20
Seasonal Changes: Heber City …
Title Seasonal Changes: Heber City, Utah
Abstract Landsat 7 views Heber City, Utah, as it goes through the seasonal changes.
Completed 2001-10-20
Bingham Coppermine, Utah: Gr …
Title Bingham Coppermine, Utah: Growth Over Time!
Abstract Comparing two datasets for Bingham Coppermine, Utah, from the Landsat satellite series. The first dataset is from August 7, 1972, the second, from July 31, 2000.
Completed 2002-01-30
Bingham Coppermine, Utah: Gr …
Title Bingham Coppermine, Utah: Growth Over Time!
Abstract Comparing two datasets for Bingham Coppermine, Utah, from the Landsat satellite series. The first dataset is from August 7, 1972, the second, from July 31, 2000.
Completed 2002-01-30
Seasonal Changes: Salt Lake …
Title Seasonal Changes: Salt Lake City, Utah
Abstract Landsat 7 views Salt Lake City, Utah, as it goes through the seasonal changes.
Completed 2001-10-20
Seasonal Changes: Salt Lake …
Title Seasonal Changes: Salt Lake City, Utah
Abstract Landsat 7 views Salt Lake City, Utah, as it goes through the seasonal changes.
Completed 2001-10-20
Seasonal Changes: Salt Lake …
Title Seasonal Changes: Salt Lake City, Utah
Abstract Landsat 7 views Salt Lake City, Utah, as it goes through the seasonal changes.
Completed 2001-10-20
Seasonal Changes: Salt Lake …
Title Seasonal Changes: Salt Lake City, Utah
Abstract Landsat 7 views Salt Lake City, Utah, as it goes through the seasonal changes.
Completed 2001-10-20
Seasonal Changes: Salt Lake …
Title Seasonal Changes: Salt Lake City, Utah
Abstract Landsat 7 views Salt Lake City, Utah, as it goes through the seasonal changes.
Completed 2001-10-20
Seasonal Change around Salt …
Title Seasonal Change around Salt Lake City: Fall
Abstract Landsat 7 imagery is combined here with terrain elevation data to create a view of the Salt Lake City area, looking towards the West. This image was taken in the fall of 2001 and can be compared to identical animations using images taken at other times of the year.
Completed 2002-01-30
Seasonal Change around Salt …
Title Seasonal Change around Salt Lake City: Fall
Abstract Landsat 7 imagery is combined here with terrain elevation data to create a view of the Salt Lake City area, looking towards the West. This image was taken in the fall of 2001 and can be compared to identical animations using images taken at other times of the year.
Completed 2002-01-30
Maryland Drought: Side by Si …
Title Maryland Drought: Side by Side Comparison of Loch Raven in May and August, 1999
Completed 1999-09-15
Landsat 7 Rotation around Wa …
Title Landsat 7 Rotation around Washington DC
Completed 1999-06-10
Landsat 7 Zoom Down to Washi …
Title Landsat 7 Zoom Down to Washington DC
Completed 1999-06-10
Iceland Glacier Recession 19 …
Title Iceland Glacier Recession 1997 to 2000
Abstract This animation is a close up zoom into largest area of glacier recesion at the Breidamerkurjokull glacier in Iceland. The data from 1997 is taken from Landsat 5 and the 2000 data is from Landsat 7. The Breidamerkurjokull glacier in Iceland has been measured by Landsat to be receding since 1973. In 1997, Landsat 5 took several other images of the glacier. It was thought by some glacierologists that this particular glacier was receding quicker in the late 1990s than it did in the late 1980s or 1970s. After careful analysis Goddard's Glacierologist, Dorothy Hall, concluded that the recession from 1997 to 2000 occurs at a similar rate to the recession between 1973 and 2000. It is extremely controversial whether or not this recession is caused by global warming.
Completed 2001-03-22
Iceland Glacier Recession 19 …
Title Iceland Glacier Recession 1997 to 2000
Abstract This animation is a close up zoom into largest area of glacier recesion at the Breidamerkurjokull glacier in Iceland. The data from 1997 is taken from Landsat 5 and the 2000 data is from Landsat 7. The Breidamerkurjokull glacier in Iceland has been measured by Landsat to be receding since 1973. In 1997, Landsat 5 took several other images of the glacier. It was thought by some glacierologists that this particular glacier was receding quicker in the late 1990s than it did in the late 1980s or 1970s. After careful analysis Goddard's Glacierologist, Dorothy Hall, concluded that the recession from 1997 to 2000 occurs at a similar rate to the recession between 1973 and 2000. It is extremely controversial whether or not this recession is caused by global warming.
Completed 2001-03-22
Iceland Glacier Recession 19 …
Title Iceland Glacier Recession 1997 to 2000
Abstract This animation is a close up zoom into largest area of glacier recesion at the Breidamerkurjokull glacier in Iceland. The data from 1997 is taken from Landsat 5 and the 2000 data is from Landsat 7. The Breidamerkurjokull glacier in Iceland has been measured by Landsat to be receding since 1973. In 1997, Landsat 5 took several other images of the glacier. It was thought by some glacierologists that this particular glacier was receding quicker in the late 1990s than it did in the late 1980s or 1970s. After careful analysis Goddard's Glacierologist, Dorothy Hall, concluded that the recession from 1997 to 2000 occurs at a similar rate to the recession between 1973 and 2000. It is extremely controversial whether or not this recession is caused by global warming.
Completed 2001-03-22
Iceland Glacier Recession 19 …
Title Iceland Glacier Recession 1997 to 2000
Abstract This animation is a close up zoom into largest area of glacier recesion at the Breidamerkurjokull glacier in Iceland. The data from 1997 is taken from Landsat 5 and the 2000 data is from Landsat 7. The Breidamerkurjokull glacier in Iceland has been measured by Landsat to be receding since 1973. In 1997, Landsat 5 took several other images of the glacier. It was thought by some glacierologists that this particular glacier was receding quicker in the late 1990s than it did in the late 1980s or 1970s. After careful analysis Goddard's Glacierologist, Dorothy Hall, concluded that the recession from 1997 to 2000 occurs at a similar rate to the recession between 1973 and 2000. It is extremely controversial whether or not this recession is caused by global warming.
Completed 2001-03-22
Mt. Etna, Sicily on July 29, …
Title Mt. Etna, Sicily on July 29, 2001 from Landsat 7
Abstract Landsat 7 is capable of seeing in infrared, in this animation we can see the lava flows from the volcano.
Completed 2001-08-15
Mt. Etna, Sicily on July 29, …
Title Mt. Etna, Sicily on July 29, 2001 from Landsat 7
Abstract Landsat 7 is capable of seeing in infrared, in this animation we can see the lava flows from the volcano.
Completed 2001-08-15
Mt. Etna, Sicily on July 29, …
Title Mt. Etna, Sicily on July 29, 2001 from Landsat 7
Abstract Landsat 7 is capable of seeing in infrared, in this animation we can see the lava flows from the volcano.
Completed 2001-08-15
Mt. Etna, Sicily on July 29, …
Title Mt. Etna, Sicily on July 29, 2001 from Landsat 7
Abstract Landsat 7 is capable of seeing in infrared, in this animation we can see the lava flows from the volcano.
Completed 2001-08-15
Maryland Drought: Side-by-si …
Title Maryland Drought: Side-by-side Comparison of Liberty Reservoir in 1997 and 1999 (with dates)
Abstract This is a side-by-side image of Maryland's Liberty Reservoir. The image on the left is a Landsat image from July 1997. The image on the right is also a Landsat image, but it was taken in July of 1999 after two consecutive years of drought.
Completed 1999-09-15
Seasonal Change around Salt …
Title Seasonal Change around Salt Lake City: Summer
Abstract Landsat 7 imagery is combined here with terrain elevation data to create a view of the Salt Lake City area, looking towards the West. This image was taken in the summer of 2001 and can be compared to identical animations using images taken at other times of the year.
Completed 2002-01-30
Seasonal Change around Salt …
Title Seasonal Change around Salt Lake City: Summer
Abstract Landsat 7 imagery is combined here with terrain elevation data to create a view of the Salt Lake City area, looking towards the West. This image was taken in the summer of 2001 and can be compared to identical animations using images taken at other times of the year.
Completed 2002-01-30
Looking at Minnesota in Wint …
Title Looking at Minnesota in Winter
Abstract Minnesota isn't always covered in snow during winter. This is a dissolve between images of Minnesota in 2000 and 2001.
Completed 2001-04-19
Looking at Minnesota in Wint …
Title Looking at Minnesota in Winter
Abstract Minnesota isn't always covered in snow during winter. This is a dissolve between images of Minnesota in 2000 and 2001.
Completed 2001-04-19
Looking at Minnesota in Wint …
Title Looking at Minnesota in Winter
Abstract Minnesota isn't always covered in snow during winter. This is a dissolve between images of Minnesota in 2000 and 2001.
Completed 2001-04-19
Impervious Surface Cover: Pa …
Title Impervious Surface Cover: Paved Areas in DC and Baltimore
Abstract A special algorithm has been applied to the Landsat 7 image to illuminate the changes in low-density residential land use which exemplify sprawl. There is a link between impervious surfaces within a watershed, (here we see a subset of the Chesapeake Bay watershed area) and the water quality within the watershed. In general, once 10-15 % of an area is covered by impervious surfaces, increased sediments and chemical pollutants in runoff have a measurable effect on water quality. When 15-25% of a watershed is paved or impervious to drainage, increased runoff leads to reduced oxygen levels and impaired stream life. When more then 25% of surfaces are paved, many types of stream life die from the concentrated runoff and sediments.
Completed 2001-06-20
Impervious Surface Cover: Pa …
Title Impervious Surface Cover: Paved Areas in DC and Baltimore
Abstract A special algorithm has been applied to the Landsat 7 image to illuminate the changes in low-density residential land use which exemplify sprawl. There is a link between impervious surfaces within a watershed, (here we see a subset of the Chesapeake Bay watershed area) and the water quality within the watershed. In general, once 10-15 % of an area is covered by impervious surfaces, increased sediments and chemical pollutants in runoff have a measurable effect on water quality. When 15-25% of a watershed is paved or impervious to drainage, increased runoff leads to reduced oxygen levels and impaired stream life. When more then 25% of surfaces are paved, many types of stream life die from the concentrated runoff and sediments.
Completed 2001-06-20
Impervious Surface Cover: Pa …
Title Impervious Surface Cover: Paved Areas in DC and Baltimore
Abstract A special algorithm has been applied to the Landsat 7 image to illuminate the changes in low-density residential land use which exemplify sprawl. There is a link between impervious surfaces within a watershed, (here we see a subset of the Chesapeake Bay watershed area) and the water quality within the watershed. In general, once 10-15 % of an area is covered by impervious surfaces, increased sediments and chemical pollutants in runoff have a measurable effect on water quality. When 15-25% of a watershed is paved or impervious to drainage, increased runoff leads to reduced oxygen levels and impaired stream life. When more then 25% of surfaces are paved, many types of stream life die from the concentrated runoff and sediments.
Completed 2001-06-20
First Images from Landsat 7: …
Title First Images from Landsat 7: Zooming Down to Yankton, South Dakota
Abstract Zoom down to Yankton, South Dakota
Completed 1999-04-22
Maryland Drought: Side-by-si …
Title Maryland Drought: Side-by-side Comparison of Liberty Reservoir in 1997 and 1999 (without dates)
Completed 1999-09-15
Landsat 7 Fly Over of Chile
Title Landsat 7 Fly Over of Chile
Abstract Flying over the country Chile.
Completed 2000-01-01
Landsat 7 Fly Over of Chile
Title Landsat 7 Fly Over of Chile
Abstract Flying over the country Chile.
Completed 2000-01-01
Landsat 7 Fly Over of Chile
Title Landsat 7 Fly Over of Chile
Abstract Flying over the country Chile.
Completed 2000-01-01
Zoom Down to the Pine Island …
Title Zoom Down to the Pine Island Glacier
Abstract A slow zoom down to Antarctica's Pine Island Glacier where a crack has formed. Using Landsat 7 data showing before and after. Dates are March 6, 2000, and January 4, 2001.
Completed 2001-03-07
Zoom Down to the Pine Island …
Title Zoom Down to the Pine Island Glacier
Abstract A slow zoom down to Antarctica's Pine Island Glacier where a crack has formed. Using Landsat 7 data showing before and after. Dates are March 6, 2000, and January 4, 2001.
Completed 2001-03-07
Zoom Down to the Pine Island …
Title Zoom Down to the Pine Island Glacier
Abstract A slow zoom down to Antarctica's Pine Island Glacier where a crack has formed. Using Landsat 7 data showing before and after. Dates are March 6, 2000, and January 4, 2001.
Completed 2001-03-07
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