{ "count": 6, "next": null, "previous": null, "results": [ { "id": 30973, "url": "https://svs.gsfc.nasa.gov/30973/", "result_type": "Hyperwall Visual", "release_date": "2018-05-27T00:00:00-04:00", "title": "Aoba (Ambae) Volcano Eruption, Vanuatu", "description": "Activity for Aoba (Ambae) volcano has increased in recent months and is now in a minor eruption state. A restricted area of risk which is 3km around the active vent has been established as the volcano began to become more active in March and early April 2018. At that time the volcano began to emit more and sustained volcanic ash or/ and gases. Vanuatu’s Council of Ministers has declared a state of emergency on Ambae due to the heavy ash fall which has contaminated water and food supplies for the island’s nearly 11,000 inhabitants, who are in the process of being evacuated from the island. || ", "hits": 88 }, { "id": 30476, "url": "https://svs.gsfc.nasa.gov/30476/", "result_type": "Hyperwall Visual", "release_date": "2013-11-01T15:00:00-04:00", "title": "Mount Etna", "description": "Twin volcanic plumes—one of ash, one of gas—rose from Sicily’s Mount Etna on the morning of October 26, 2013. L’Istituto Nazionale di Geofisica e Vulcanologia (INGV) Osservatorio Etneo (National Institute of Geophysics and Volcanology Etna Observatory) reported that Etna was experiencing its first paroxysm in six months. Multiple eruption columns are common at Etna, a result of complex plumbing within the volcano. The Northeast Crater, one of several on Etna’s summit, was emitting the ash column, while the New Southeast Crater was simultaneously venting mostly gas.This natural-color image collected by Landsat 8 shows the view from space at 11:38 a.m. local time. The towering, gas-rich plume cast a dark shadow over the lower, ash-rich plume and Etna’s northwestern flank. Relatively fresh lava flows (less than a century or so old) are dark gray; vegetation is green; and the tile-roofed buildings of Bronte and Biancavilla lend the towns an ochre hue. || ", "hits": 34 }, { "id": 30307, "url": "https://svs.gsfc.nasa.gov/30307/", "result_type": "Hyperwall Visual", "release_date": "2013-10-21T12:00:00-04:00", "title": "Iceland Volcano Eruption Eyjafjallajökull", "description": "Iceland’s Eyjafjallajökull Volcano produced its second major ash plume of 2010 beginning on May 7. When the first ash eruption began on April 14, air travel across most of Europe was shut down, but by the time of the second eruption, forecasters were better prepared to predict the spread of volcanic ash. Despite some airport closures and flight cancellations, most air passengers completed their journeys with minimal delay.Among the key pieces of information that a computer model must have to predict the spread of ash is when the eruption happened, how much ash was ejected, and how high the plume got. The Multi-angle Imaging SpectroRadiometer (MISR) aboard NASA’s Terra satellite collected data on ash height when it passed just east of the Eyjafjallajökull Volcano mid-morning on May 7. || ", "hits": 33 }, { "id": 30308, "url": "https://svs.gsfc.nasa.gov/30308/", "result_type": "Hyperwall Visual", "release_date": "2013-10-21T12:00:00-04:00", "title": "Puyehue-Cordon Caulle Volcanic Complex, Chile", "description": "On June 4, 2011, a fissure opened in Chile's Puyehue-Cordón Caulle Volcanic Complex, sending ash 45,000 feet (14,000 meters) into the air. This image, taken on June 11, 2011, shows the path of the volcanic ash plume. Winds blowing from the west carried the plume downwind, across Argentina and eventually reaching the South Atlantic Ocean. Clear skies allow the snow-covered Andes Mountains to be seen just north and south of the erupting volcano. The opposite is true for areas downwind of the volcano beneath the highest concentrations of volcanic ash. It is hard for even the tiniest bit of sunlight to penetrate the thick plume as revealed by the dark shadow cast on the earth's surface directly south of the plume. The width of the plume increases with increasing distance from the volcano as particulates disperse in the atmosphere. The zigzag path of the plume over Argentina suggests shifts in wind direction. East of the Andes, heavier volcanic ash sediment has settled on the land below, blanketing large portions of Argentina. It appears that some of the settled ash has been picked up again, this time by surface winds that may eventually carry the sediment out to sea. A high resolution image acquired 6 weeks later shows ash covering the mountain slopes and pumice floating in lakes. || ", "hits": 54 }, { "id": 10398, "url": "https://svs.gsfc.nasa.gov/10398/", "result_type": "Produced Video", "release_date": "2009-02-20T00:00:00-05:00", "title": "USGS Video of a Hawaiian Volcano", "description": "Aerosols smaller than 1 micrometer are mostly formed by condensation processes such as conversion of sulfur dioxide (SO2) gas (released from volcanic eruptions) to sulfate particles and by formation of soot and smoke during burning processes. After formation, the aerosols are mixed and transported by atmospheric motions and are primarily removed by cloud and precipitation processes. Video courtesy of United States Geological Survey. || ", "hits": 38 }, { "id": 3116, "url": "https://svs.gsfc.nasa.gov/3116/", "result_type": "Visualization", "release_date": "2005-03-02T12:00:00-05:00", "title": "Mount St. Helens Before, During, and After (WMS)", "description": "Mount St. Helens erupted on May 18, 1980, devastating more than 150 square miles of forest in southwestern Washington state. This animation shows Landsat images of the Mount St. Helens area in 1973, 1983, and 2000, illustrating the destruction and regrowth of the forest. The 1983 image clearly shows the new crater on the northern slope where the eruption occurred, the rivers and lakes covered with ash, and the regions of deforestation. The 2000 image, taken twenty years after the eruption, still shows the changed crater, but much of the devastated area is covered by new vegetation growth. || ", "hits": 117 } ] }