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Ambrym Volcano Ash Plume
| Title |
Ambrym Volcano Ash Plume |
| Description |
In the South Pacific Ocean east of Australia, the 83 islands that make up the Vanuatu nation are dotted with countless craters from active and extinct volcanoes. Among the most dangerous is the almost-permanently active Ambrym Volcano. In this pair of images from the Moderate Resolution Imaging Spectroradiometer (MODIS) captured by the Terra satellite on April 27, 2004, a large plume of volcanic ash is blowing westward from the volcano, which appears at the center right edge. The plume is mixing with clouds, and is more apparent as a bright, reddish orange color in the false-color image (below). The large image is the same spatial resolution (level of detail), but shows a wider area. Image courtesy Jeff Schmaltz, MODIS Rapid Response Team, NASA-GSFC |
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Ambrym Volcano Ash Plume
| Title |
Ambrym Volcano Ash Plume |
| Description |
In the South Pacific Ocean east of Australia, the 83 islands that make up the Vanuatu nation are dotted with countless craters from active and extinct volcanoes. Among the most dangerous is the almost-permanently active Ambrym Volcano. In this pair of images from the Moderate Resolution Imaging Spectroradiometer (MODIS) captured by the Terra satellite on April 27, 2004, a large plume of volcanic ash is blowing westward from the volcano, which appears at the center right edge. The plume is mixing with clouds, and is more apparent as a bright, reddish orange color in the false-color image (below). The large image is the same spatial resolution (level of detail), but shows a wider area. Image courtesy Jeff Schmaltz, MODIS Rapid Response Team, NASA-GSFC |
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Ambrym Volcano Ash Plume
| Title |
Ambrym Volcano Ash Plume |
| Description |
In the South Pacific Ocean, the Ambyrm Volcano, originally captured in an image taken on April 27, continued to erupt in mid-May 2004. This image was acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) on the Aqua satellite on May 15. Vanuatu Island is pictured at the top left of the image, and a plume of volcanic ash is drifting southeastward from Ambrym, which is near the Island?s center. MODIS detected a thermal signature (marked in yellow) in addition to the ash plume. The scene is available in other resolutions. Image courtesy Jeff Schmaltz, MODIS Rapid Response Team, NASA-GSFC |
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Cyclone Ivy
| Title |
Cyclone Ivy |
| Description |
Ivy first formed into a tropical storm at 18Z on the 22nd of February 2004 midway between Fiji to the east and Vanuatu to the west. The storm moved northwest for a day and gained strength becoming a minimal Category 1 cyclone at 18Z on the 23rd. Ivy then recurved toward the southwest on the 24th and continued to intensify threatening the Vanuatu islands. By 06Z on the 25th Ivy was bearing down on the island of Malakula in central Vanuatu with maximum sustained winds estimated near 90 knots (104 mph) by the Joint Typhoon Warning Center. The Tropical Rainfall Measuring Mission (TRMM) satellite captured these unique images of Cyclone Ivy as it approached Vanuatu. The top image was taken at 05:48 UTC on 24 February 2004. It shows the horizontal distribution of rain rates observed by the TRMM Precipitation Radar (PR) in the center swath and the TRMM Microwave Imager (TMI) in the outer swath. The rain rates are overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS). At this time, Ivy was estimated to have sustained winds of 70 knots (83 mph). TRMM shows that Ivy is still in the process of organizing with no clear eye present yet. However, a substantial area of intense rainfall (darker reds) is detected near the center of the circulation. As hurricanes depend on the heat released from the condensation of water vapor to fuel their circulation, the presence of these rainrates near the center of the storm where they are the most effective, indicates the potential for further strengthening. The bottom image shows Ivy almost a day and half later at 14:33 UTC on the 25th just before hitting the island of Malakula. The winds are now up to 90 knots (104 mph), and TRMM shows that Ivy now has a well-developed, symmetrical eye that is associated with mature tropical cyclones. The eye is surrounded by mainly moderate rainrates (green areas) with the most intense rainrates (dark reds) present in rainbands off to the east. TRMM is a joint mission between NASA and the Japanese space agency JAXA. Images produced by Hal Pierce (SSAI/NASA GSFC) and caption by Steve Lang (SSAI/NASA GSFC). |
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Cyclone Ivy
| Title |
Cyclone Ivy |
| Description |
On February 25, Tropical Cyclone Ivy was continuing to gather strength and generate rough seas. In this image Ivy was located about 450 kilometers north of Port Vila, the capital of Vanuatu, and was moving west-southwest at six knots. The cyclone had maximum sustained winds of 75 knots and gusts to 90 knots and was intensifying. Image courtesy of Jesse Allen, NASA Earth Observatory at NASA Goddard Space Flight Center. |
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Eruption at Ambrym Volcano
| Title |
Eruption at Ambrym Volcano |
| Description |
The Ambrym Volcano was billowing ash and steam on October 4, 2004, when the Moderate Resolution Imaging Spectroradiometer (MODIS [ http://modis.gsfc.nasa.gov ]) on NASA's Terra [ http://terra.nasa.gov/ ] satellite captured this image. Located on Ambrym Island in Vanuatu approximately 2,200 kilometers northeast of Australia, the volcano is one of the region's most active, with regular eruptions nearly every year in recent history. Red dots on top of the volcano indicate that MODIS also detected a thermal anomaly associated with the eruption. This could be hot ash, lava, or fires started by the erupting volcano. The large image provided above is at MODIS' maximum resolution of 250 meters per pixel. The MODIS Rapid Response Team provides the image in additional resolutions. NASA image courtesy Jeff Schmaltz, MODIS Land Rapid Response Team [ http://rapidfire.sci.gsfc.nasa.gov ] at NASA GSFC |
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Eruption on Lopevi, Vanuatu
| Title |
Eruption on Lopevi, Vanuatu |
| Description |
Vanuatu's Lopevi Volcano released a plume on May 3, 2007. The same day, the Moderate Resolution Imaging Spectroradiometer (MODIS) [ http://modis.gsfc.nasa.gov ] on NASA's Aqua [ http://aqua.nasa.gov ] satellite captured this image of the plume and its larger consequences. The U.S. Air Force Weather Agency reported an extensive area of vog resulting from the volcanic eruption. When gases from a volcano—particularly sulfur dioxide—react with oxygen, water, dust, and sunlight, volcanic smog (or vog) results. Besides Lopevi and its neighboring islands, this image shows the volcanic plume blowing westward away from the volcano. The plume appears as a small, mostly opaque puff of gray-beige. The resulting area of vog, which appears as a more transparent, dingy-gray haze, dwarfs the diminutive plume.Lopevi [ http://www.volcano.si.edu/world/volcano.cfm?vnum=0507-05= ] is a stratovolcano composed of alternating layers of solidified lava, hardened ash, and volcanic rocks. One of the island nation's most active volcanoes, this volcanic island is only about 7 kilometers (4 miles) wide. Eruptions have been recorded at Lopevi since the middle of the 19th century. You can download a 250-meter-resolution Lopevi KMZ file [ http://earthobservatory.nasa.gov/NaturalHazards/Archive/May2007/lopevi_amo_2007123.kmz ] for use with Google Earth. [ http://earth.google.com/download-earth.html ] NASA image created by Jesse Allen, using data provided courtesy of the MODIS Rapid Response [ http://rapidfire.sci.gsfc.nasa.gov/ ] team. |
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Sulfur Dioxide Leaks from th
…
| Title |
Sulfur Dioxide Leaks from the Ambrym Volcano |
| Description |
) Scientists building computer models of the complicated interactions that make up Earth?s climate need to understand how much sulfur dioxide enters the atmosphere and where it travels. Since most volcanic sulfur dioxide emissions come from passive degassing, OMI will allow scientists to assess the volcanic contribution to atmospheric sulfur dioxide concentrations with unprecedented accuracy. The data should help refine climate models. NASA image and caption information courtesy Simon Carn, Joint Center for Earth Systems Technology [ http://www.jcet.umbc.edu/ ] (JCET), University of Maryland Baltimore County (UMBC). The OMI was added to the Aura satellite as part of a collaboration between the Netherlands? Agency for Aerospace Programs, the Finnish Meteorological Institute, and NASA., Sandwiched between Fiji and Australia in the South Pacific, the island nation of Vanuatu hosted the strongest point source of sulfur dioxide on the planet for the first months of 2005. Ambrym Volcano, on the island of the same name, has been steadily emitting sulfur dioxide for at least six months, and this image, produced using data collected by the Ozone Monitoring Instrument on NASA?s Aura [ http://aura.gsfc.nasa.gov/ ] satellite during the first ten days of March 2005, shows high concentrations of sulfur dioxide drifting northwest from the volcano. Ambrym Volcano is not erupting in the traditional sense with thick ash plumes and explosive bursts of lava, rather it is leaking sulfur dioxide gas from active lava lakes in what scientists call ?passive? or ?non-eruptive? emissions. Despite these gentle names, the leaking volcano still poses a tremendous hazard to the local population. The gas has a strong smell and can irritate the eyes and nose and make breathing difficult. Higher in the atmosphere, sulfur dioxide combines with water to create rain laced with sulfuric acid. On Ambrym, acid rain has destroyed staple crops and contaminated the water supply, leaving the communities in need of food aid. Satellites have only been able to monitor sulfur dioxide emissions from large eruptions or the most powerful passive degassing in the past. All other sulfur dioxide emissions remain at low altitudes and have low concentrations, making them hard to see from space. On July 15, 2004, NASA launched its Aura satellite carrying the Ozone Monitoring Instrument (OMI). With greater spatial resolution (the ability to ?zoom-in? to see greater detail) and higher sensitivity to sulfur dioxide than any previous space-borne sensor, OMI is allowing scientists to study passive volcanic degassing on a daily basis for the first time. The above image is an example of the instrument?s preliminary, uncalibrated, and unvalidated data. This new view of passive volcanic emissions could lead to significant advances in understanding both volcanic eruptions and the impact of sulfur dioxide on climate. Passive emissions can be a precursor to explosive eruptions, and thus provide a warning signal that the volcano?s activity may be changing. Once in the atmosphere, sulfur dioxide creates a bright haze that reflects sunlight back into space. Since less sunlight reaches the Earth, the sulfur dioxide haze has a cooling effect on the climate. (See ?Every Cloud Has a Filthy Lining? [ http://earthobservatory.nasa.gov/Study/ShipTracks/ship_tracks.html ] |
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Sulfur Dioxide Leaks from th
…
| Title |
Sulfur Dioxide Leaks from the Ambrym Volcano |
| Description |
) Scientists building computer models of the complicated interactions that make up Earth?s climate need to understand how much sulfur dioxide enters the atmosphere and where it travels. Since most volcanic sulfur dioxide emissions come from passive degassing, OMI will allow scientists to assess the volcanic contribution to atmospheric sulfur dioxide concentrations with unprecedented accuracy. The data should help refine climate models. NASA image and caption information courtesy Simon Carn, Joint Center for Earth Systems Technology [ http://www.jcet.umbc.edu/ ] (JCET), University of Maryland Baltimore County (UMBC). The OMI was added to the Aura satellite as part of a collaboration between the Netherlands? Agency for Aerospace Programs, the Finnish Meteorological Institute, and NASA., Sandwiched between Fiji and Australia in the South Pacific, the island nation of Vanuatu hosted the strongest point source of sulfur dioxide on the planet for the first months of 2005. Ambrym Volcano, on the island of the same name, has been steadily emitting sulfur dioxide for at least six months, and this image, produced using data collected by the Ozone Monitoring Instrument on NASA?s Aura [ http://aura.gsfc.nasa.gov/ ] satellite during the first ten days of March 2005, shows high concentrations of sulfur dioxide drifting northwest from the volcano. Ambrym Volcano is not erupting in the traditional sense with thick ash plumes and explosive bursts of lava, rather it is leaking sulfur dioxide gas from active lava lakes in what scientists call ?passive? or ?non-eruptive? emissions. Despite these gentle names, the leaking volcano still poses a tremendous hazard to the local population. The gas has a strong smell and can irritate the eyes and nose and make breathing difficult. Higher in the atmosphere, sulfur dioxide combines with water to create rain laced with sulfuric acid. On Ambrym, acid rain has destroyed staple crops and contaminated the water supply, leaving the communities in need of food aid. Satellites have only been able to monitor sulfur dioxide emissions from large eruptions or the most powerful passive degassing in the past. All other sulfur dioxide emissions remain at low altitudes and have low concentrations, making them hard to see from space. On July 15, 2004, NASA launched its Aura satellite carrying the Ozone Monitoring Instrument (OMI). With greater spatial resolution (the ability to ?zoom-in? to see greater detail) and higher sensitivity to sulfur dioxide than any previous space-borne sensor, OMI is allowing scientists to study passive volcanic degassing on a daily basis for the first time. The above image is an example of the instrument?s preliminary, uncalibrated, and unvalidated data. This new view of passive volcanic emissions could lead to significant advances in understanding both volcanic eruptions and the impact of sulfur dioxide on climate. Passive emissions can be a precursor to explosive eruptions, and thus provide a warning signal that the volcano?s activity may be changing. Once in the atmosphere, sulfur dioxide creates a bright haze that reflects sunlight back into space. Since less sunlight reaches the Earth, the sulfur dioxide haze has a cooling effect on the climate. (See ?Every Cloud Has a Filthy Lining? [ http://earthobservatory.nasa.gov/Study/ShipTracks/ship_tracks.html ] |
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Cyclone Gene: Natural Hazard
…
nasa, nasanaturalhazards
Tropical Cyclone Gene was sl
…
gene_amo_2008035
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008-02-04 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
gene_amo_2008035 |
|
Cyclone Gene: Natural Hazard
…
nasa, nasanaturalhazards
Even though Cyclone Gene was
…
gene_qsc_2008035
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008-02-04 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
gene_qsc_2008035 |
|
Eruption on Lopevi, Vanuatu:
…
nasa, nasanaturalhazards
Vanuatu's Lopevi Volcano rel
…
lopevi_amo_2007123
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2007-05-03 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
lopevi_amo_2007123 |
|
Sulfur Dioxide Seeps from th
…
nasa, nasaimageofthedaygalle
…
Sandwiched between Fiji and
…
Ambrym2_OMI_2005069
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2004-07-15 |
| creator |
NASA -- NASA image and caption information courtesy Simon Carn, www.jcet.umbc.edu/ Joint Center for Earth Systems Technology (JCET), University of Maryland Baltimore County (UMBC). The OMI was added to the Aura satellite as part of a collaboration between the Netherlands' Agency for Aerospace Programs, the Finnish Meteorological Institute, and NASA. |
| identifier |
Ambrym2_OMI_2005069 |
|
Sulfur Dioxide Seeps from th
…
nasa, nasaimageofthedaygalle
…
Sandwiched between Fiji and
…
Ambrym2_OMI_2005069
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2004-07-15 |
| creator |
NASA -- NASA image and caption information courtesy Simon Carn, www.jcet.umbc.edu/ Joint Center for Earth Systems Technology (JCET), University of Maryland Baltimore County (UMBC). The OMI was added to the Aura satellite as part of a collaboration between the Netherlands' Agency for Aerospace Programs, the Finnish Meteorological Institute, and NASA. |
| identifier |
Ambrym2_OMI_2005069 |
|
Mt. Manaro Volcano, Ambae Is
…
nasa, nasaimageofthedaygalle
…
In late November 2005, Aoba
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PIA06675
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2000-02-11 |
| creator |
NASA -- NASA image courtesy JPL and NGA |
| identifier |
PIA06675 |
|
Ambrym Volcano Ash Plume: Na
…
nasa, nasanaturalhazards
In the South Pacific Ocean,
…
Vanuatu.AMOA2004136
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2004-05-15 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Vanuatu.AMOA2004136 |
|
Cyclone Ivy: Natural Hazards
nasa, nasanaturalhazards
On February 25, Tropical Cyc
…
aqua_tcivy_25feb04
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2004-02-25 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
aqua_tcivy_25feb04 |
|
Cyclone Gene: Natural Hazard
…
nasa, nasanaturalhazards
Tropical Cyclone Gene crashe
…
gene_amo_2008030
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008-01-30 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
gene_amo_2008030 |
|
Cyclone Ivy: Natural Hazards
nasa, nasanaturalhazards
Ivy first formed into a trop
…
ivy_trmm2004055
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2004-02-24 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
ivy_trmm2004055 |
|
Eruption at Ambrym Volcano:
…
nasa, nasanaturalhazards
The Ambrym Volcano was billo
…
Vanuatu_TMO_2004278
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2004-10-04 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Vanuatu_TMO_2004278 |
|
Ambrym Volcano Ash Plume: Na
…
nasa, nasanaturalhazards
In the South Pacific Ocean e
…
Vanuatu.TMOA2004118
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2004-04-27 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Vanuatu.TMOA2004118 |
|
Ambrym Volcano Ash Plume: Na
…
nasa, nasanaturalhazards
In the South Pacific Ocean e
…
Vanuatu.TMOA2004118
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2004-04-27 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
Vanuatu.TMOA2004118 |
|
Ambae Island, Vanuatu (South
…
PIA06675
Sol (our sun)
C-Band Radar, X-Band Radar
| Title |
Ambae Island, Vanuatu (South Pacific) |
| Original Caption Released with Image |
The recently active volcano Mt. Manaro is the dominant feature in this shaded relief image of Ambae Island, part of the Vanuatu archipelago located 1400 miles northeast of Sydney, Australia. About 5000 inhabitants, half the island's population, were evacuated in early December from the path of a possible lahar, or mud flow, when the volcano started spewing clouds of steam and toxic gases 10,000 feet into the atmosphere. Last active in 1996, the 1496 meter (4908 ft.) high Hawaiian-style basaltic shield volcano features two lakes within its summit caldera, or crater. The ash and gas plume is actually emerging from a vent at the center of Lake Voui (at left), which was formed approximately 425 years ago after an explosive eruption. Two visualization methods were combined to produce the image: shading and color coding of topographic height. The shade image was derived by computing topographic slope in the northwest-southeast direction, so that northwest slopes appear bright and southeast slopes appear dark. Color coding is directly related to topographic height, with green at the lower elevations, rising through yellow and tan, to white at the highest elevations. Elevation data used in this image were acquired by the Shuttle Radar Topography Mission aboard the Space Shuttle Endeavour, launched on Feb. 11, 2000. SRTM used the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) that flew twice on the Space Shuttle Endeavour in 1994. SRTM was designed to collect 3-D measurements of the Earth's surface. To collect the 3-D data, engineers added a 60-meter (approximately 200-foot) mast, installed additional C-band and X-band antennas, and improved tracking and navigation devices. The mission is a cooperative project between NASA, the National Geospatial-Intelligence Agency (NGA) of the U.S. Department of Defense and the German and Italian space agencies. It is managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif., for NASA's Earth Science Enterprise,Washington, D.C. Location: 15.4 degree south latitude, 167.9 degrees east longitude Orientation: North toward the top, Mercator projection Size: 36.8 by 27.8 kilometers (22.9 by 17.3 miles) Image Data: shaded and colored SRTM elevation model Date Acquired: February 2000 |
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