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Images of Indonesia and Indian Ocean and Australia
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North Reef Island, Andaman S
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| Title |
North Reef Island, Andaman Sea |
| Description |
On December 26, 2004, one of the largest earthquakes in recorded history struck offshore of the island of Sumatra, Indonesia. The ocean floor heaved in some places and sank in others, creating catastrophic tsunamis that raced across the Indian Ocean. Hundreds of thousands of people died as the waves struck coastlines from Thailand to Sri Lanka to Somalia. In addition to tsunami damage, satellite images of reefs, islands, and coastlines identified signs of permanent elevation change—sinking or uplift—along the fault between the Indo-Australia and Burma plates. [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=12640 ] In places such as North Reef Island, shown in this pair of images from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) [ http://asterweb.jpl.nasa.gov ] on NASA's Terra [ http://terra.nasa.gov ] satellite, the quake lifted the reefs permanently out of the water. The images use visible and infrared light detected by ASTER to make different land surfaces stand out clearly from one another: water is blue, vegetation is red, coral or bare sand appears white. In the "before" image, from December 2, 2004, the submerged reef creates a bright blue glow around the island. In the "after" image, from February 4, 2005, the white coral stands completely up out of the water. It is even tinged with red, which suggests the exposed coral had died, and algae had colonized it. In the weeks and months after the earthquake, satellite images provided broad coverage of an area where ground-based observations were initially very limited. A team of scientists led by Caltech Ph.D. geology student Aron Meltzner discovered changes in elevation along nearly 1,600 kilometers (994 miles) of the tectonic plate boundary. The images revealed that the earthquake rupture extended 100 kilometers (62 miles) farther north than estimates based on seismic and Global Positioning System (GPS) data suggested. The feature article Rise and Fall: Satellites Reveal Full Length of Tsunami-Generating Earthquake [ http://earthobservatory.nasa.gov/Study/Aceh/aceh.html ] describes how scientists used satellite images to map the length of the earthquake rupture zone. The article includes additional satellite and ground-based images of elevation changes resulting from the 2004 Aceh-Andaman earthquake. NASA images created by Jesse Allen, Earth Observatory, using data provided courtesy of the NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team. [ http://asterweb.jpl.nasa.gov/ ] |
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North Reef Island, Andaman S
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| Title |
North Reef Island, Andaman Sea |
| Description |
On December 26, 2004, one of the largest earthquakes in recorded history struck offshore of the island of Sumatra, Indonesia. The ocean floor heaved in some places and sank in others, creating catastrophic tsunamis that raced across the Indian Ocean. Hundreds of thousands of people died as the waves struck coastlines from Thailand to Sri Lanka to Somalia. In addition to tsunami damage, satellite images of reefs, islands, and coastlines identified signs of permanent elevation change—sinking or uplift—along the fault between the Indo-Australia and Burma plates. [ http://earthobservatory.nasa.gov/NaturalHazards/natural_hazards_v2.php3?img_id=12640 ] In places such as North Reef Island, shown in this pair of images from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) [ http://asterweb.jpl.nasa.gov ] on NASA's Terra [ http://terra.nasa.gov ] satellite, the quake lifted the reefs permanently out of the water. The images use visible and infrared light detected by ASTER to make different land surfaces stand out clearly from one another: water is blue, vegetation is red, coral or bare sand appears white. In the "before" image, from December 2, 2004, the submerged reef creates a bright blue glow around the island. In the "after" image, from February 4, 2005, the white coral stands completely up out of the water. It is even tinged with red, which suggests the exposed coral had died, and algae had colonized it. In the weeks and months after the earthquake, satellite images provided broad coverage of an area where ground-based observations were initially very limited. A team of scientists led by Caltech Ph.D. geology student Aron Meltzner discovered changes in elevation along nearly 1,600 kilometers (994 miles) of the tectonic plate boundary. The images revealed that the earthquake rupture extended 100 kilometers (62 miles) farther north than estimates based on seismic and Global Positioning System (GPS) data suggested. The feature article Rise and Fall: Satellites Reveal Full Length of Tsunami-Generating Earthquake [ http://earthobservatory.nasa.gov/Study/Aceh/aceh.html ] describes how scientists used satellite images to map the length of the earthquake rupture zone. The article includes additional satellite and ground-based images of elevation changes resulting from the 2004 Aceh-Andaman earthquake. NASA images created by Jesse Allen, Earth Observatory, using data provided courtesy of the NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team. [ http://asterweb.jpl.nasa.gov/ ] |
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Thunderstorm over the Indian
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| Title |
Thunderstorm over the Indian Ocean |
| Description |
On January 24, 2007, a minor cloud system blossomed in the Indian Ocean between Indonesia and northwestern Australia. The storm lacked the circulation of a tropical storm, so it never received a name. It did not strike any major populated centers, so it never was a news item. But newsworthy and fascinating are not always the same thing, and the symmetrical shape of the storm and the apparently expanding ring of cloud ripples shown in this image suggest some intriguing atmospheric physics in action. This photo-like image was acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov/ ] on the Terra [ http://terra.nasa.gov/ ] satellite on January 24, 2007, at 10:10 a.m. local time (2:10 UTC). The circular cloud system in the image was driven by powerful thunderstorms that previously raged beneath the now-ragged cirrus clouds at the system's center. The clouds formed from an afternoon convection system, a vigorous overturning of the air that is common this time of year near Australia's tropical northern coast. The system traveled westward over Austalia's Northern Territory, eventually reaching the coast of Western Australia. Over the Indian Ocean, the cloud system grew rapidly, drawing warm, moist ocean air up into the top of the storm. At the top of this convection system, the air ceased to flow upward and spilled out into an expanding ring. This same process almost always occurs in thunderstorms, but in this case there appears to have been relatively constant wind through a deep layer of the atmosphere, allowing the uplifted air to spread out equally in all directions. The clouds at the top of the storm dispersed as an expanding disk of cirrus cloud. The outflowing air may also have disturbed and amplified existing clouds, making them more reflective. Increased reflection of sunlight makes the clouds seem more brightly white to the MODIS sensor. NASA image by Jesse Allen, Earth Observatory, using data provided courtesy of the MODIS Rapid Response Team, [ http://rapidfire.sci.gsfc.nasa.gov ] Goddard Space Flight Center. Image interpretation provided by George Huffman, NASA Goddard Space Flight Center. |
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Flooding in Indonesia
| Title |
Flooding in Indonesia |
| Description |
*Animations:* ÿÿlarge (1.5 MB MPEG) ÿÿsmall [ http://earthobservatory.nasa.gov/Newsroom/NewImages/Images/java_rain.qt ] (882 KB QuickTime) This rainfall accumulation map, generated by NASA?s Tropical Rainfall Measurement Mission (TRMM) satellite, shows locally heavy rains which fell over the mountainous terrain of Java, Indonesia, during the last week of December. These rains produced severe flash flooding, mudslides, and numerous deaths across the island. More than 365,000 inhabitants were displaced from their homes due to the severe weather. A larger and persistent area of heavy rain has recently occurred throughout Indonesia, and may be the result of a slow-moving, wavelike tropical disturbance called the Madden Julian Oscillation (MJO). The MJO is generated over the Indian Ocean and moves eastward, crossing over Indonesia, northern Australia, and southern Asia. The disturbance often occurs on a six- to nine-week cycle and can bring several days of torrential rains as it passes over a region. More images of extreme rain over southeast Asia and surrounding areas may found on the TRMM [ http://earthobservatory.nasa.gov/cgi-bin/redirect?http://trmm.gsfc.nasa.gov/ ] Web site. Image and animations courtesy of Jeff Halverson, TRMM Outreach Scientist, and Hal Pierce, TRMM Visualizer, NASA Goddard Space Flight Center |
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Flooding in Indonesia
| Title |
Flooding in Indonesia |
| Description |
*Animations:* ÿÿlarge (1.5 MB MPEG) ÿÿsmall [ http://earthobservatory.nasa.gov/Newsroom/NewImages/Images/java_rain.qt ] (882 KB QuickTime) This rainfall accumulation map, generated by NASA?s Tropical Rainfall Measurement Mission (TRMM) satellite, shows locally heavy rains which fell over the mountainous terrain of Java, Indonesia, during the last week of December. These rains produced severe flash flooding, mudslides, and numerous deaths across the island. More than 365,000 inhabitants were displaced from their homes due to the severe weather. A larger and persistent area of heavy rain has recently occurred throughout Indonesia, and may be the result of a slow-moving, wavelike tropical disturbance called the Madden Julian Oscillation (MJO). The MJO is generated over the Indian Ocean and moves eastward, crossing over Indonesia, northern Australia, and southern Asia. The disturbance often occurs on a six- to nine-week cycle and can bring several days of torrential rains as it passes over a region. More images of extreme rain over southeast Asia and surrounding areas may found on the TRMM [ http://earthobservatory.nasa.gov/cgi-bin/redirect?http://trmm.gsfc.nasa.gov/ ] Web site. Image and animations courtesy of Jeff Halverson, TRMM Outreach Scientist, and Hal Pierce, TRMM Visualizer, NASA Goddard Space Flight Center |
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Thunderstorm over the Indian
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nasa, nasanaturalhazards
On January 24, 2007, a minor
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nwaust_tmo_2007024
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-01-24 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
nwaust_tmo_2007024 |
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El Nino and Rainfall: Image
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nasa, nasaimageofthedaygalle
…
At the end of 2006, East Afr
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precipanom_trmm_200611
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2006 |
| creator |
NASA -- NASA image created by Jesse Allen, Earth Observatory, using rainfall data provided courtesy of the precip.gsfc.nasa.gov/ Global Precipitation Climatology Product team at NASA Goddard Space Flight Center. |
| identifier |
precipanom_trmm_200611 |
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North Reef Island, Andaman S
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nasa, nasaimageofthedaygalle
…
On December 26, 2004, one of
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nreefis_ast_2005035
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2005-02-04 |
| creator |
NASA -- NASA images created by Jesse Allen, Earth Observatory, using data provided courtesy of the NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan asterweb.jpl.nasa.gov/ ASTER Science Team. |
| identifier |
nreefis_ast_2005035 |
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La Nina Greenup Patterns: Im
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nasa, nasaimageofthedaygalle
…
La Nina's fingerprint is all
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ge_08575_02
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
ge_08575_02 |
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La Nina Greenup Patterns: Im
…
nasa, nasaimageofthedaygalle
…
La Nina's fingerprint is all
…
ge_08575_02
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
ge_08575_02 |
|
La Nina Greenup Patterns: Im
…
nasa, nasaimageofthedaygalle
…
La Nina's fingerprint is all
…
ge_08575_02
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
ge_08575_02 |
|
La Nina Greenup Patterns: Im
…
nasa, nasaimageofthedaygalle
…
La Nina's fingerprint is all
…
ge_08575_02
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
ge_08575_02 |
|
La Nina Greenup Patterns: Im
…
nasa, nasaimageofthedaygalle
…
La Nina's fingerprint is all
…
ge_08575_02
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
ge_08575_02 |
|
La Nina Greenup Patterns: Im
…
nasa, nasaimageofthedaygalle
…
La Nina's fingerprint is all
…
ge_08575_02
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
ge_08575_02 |
|
La Nina Rainfall Patterns: I
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nasa, nasaimageofthedaygalle
…
La Nina, the counterpart to
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ge_08420
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-12-19 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
ge_08420 |
|
La Nina Rainfall Patterns: I
…
nasa, nasaimageofthedaygalle
…
La Nina, the counterpart to
…
ge_08420
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-12-19 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
ge_08420 |
|
La Nina Rainfall Patterns: I
…
nasa, nasaimageofthedaygalle
…
La Nina, the counterpart to
…
ge_08420
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-12-19 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
ge_08420 |
|
Flooding in Indonesia: Natur
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nasa, nasanaturalhazards
This rainfall accumulation m
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Java_TRM2002003
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2003-01-03 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Java_TRM2002003 |
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