The surrounding waters range from pale aquamarine to deep blue, and the color differences reflect varying water depths. Science Editor: The image has also been sharpened using the sensor's panchromatic band. The volcano has two summit craters, and although both are active, most historical eruptions have arisen from the southern crater. The delta, largely covered with a swamp forest, is home to most of Bangladesh, one of the world’s most densely populated countries and a nation that is particularly vulnerable to climate change. Visualization date: August 2, 2002. Using a collection of satellite-based observations, scientists and visualizers stitched together months of observations of the land surface, oceans, sea ice, and clouds into a seamless, true-color mosaic of every square kilometer (0.4 square miles) of our planet. The remaining plume appears as a thin, blue-gray veil extending toward the northwest (upper left) over the Bismarck Sea. Guinea-Bissau is a small country in West Africa. Off the coast of Argentina, strong ocean currents stirred up a colorful brew of floating nutrients and microscopic plant life just in time for the summer solstice. As a result, glaciers gather dust and dirt, and bear long-lasting evidence of past movements. Now littered with minefields and gun emplacements, it is a staging area for military exercises. Acquired June 16, 2010, this natural-color image shows a thin, faint plume from Manam Volcano in Papua New Guinea. The brightness and shade of blue depends on the density of the silt and the depth of the silt-carrying currents in the water. The image shows rich sediment and nutrient patterns in a tropical estuary area and complex patterns and conditions in vegetated areas. Image taken by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on October 8, 2001. Dagze Co (Lake) is one of many inland lakes in Tibet. This picture, taken by the Landsat-5 satellite on 8 April, 1985, shows sand dunes (yellow streaks) that extend from Algeria into Mauritania in northwest Africa. This is a false-color composite image made using near infrared, red and green wavelengths. Located 13 kilometers (8 miles) off the coast of mainland Papua New Guinea, Manam forms an island 10 kilometers (6 miles) wide. These rare clouds are technically called "noctilucent" or "polar mesospheric" clouds, and form at high altitudes, 80 to 85 kilometers (50 to 53 miles) high, where the mesosphere is located. Blooms off Scandinavia seem to be particularly intense in summer 2018. NASA Earth Observatory image created by Jesse Allen, using EO-1 ALI data provided courtesy of the NASA EO-1 team. It is the result of a center-pivot irrigation system, evidence that at least one optimistic farmer continues to work the fields despite the approaching sand. In the mesosphere, carbon dioxide radiates heat into space, causing cooling. This spectacular 'blue marble' image is the most detailed true-color image of the entire Earth to date. Image taken by the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite. This image was acquired by the Landsat 5 satellite on February 28, 1985. There is no well defined crater. Volcanoes. The 43-mile- (70-kilometer-) long Drygalski Ice Tongue juts out from the icy land of Antarctica into McMurdo Sound like a pier, and is a floating extension of the land-based David Glacier. The glacier surface appears especially complicated near the center of the image, where a tributary has pushed the ice in the main glacier slightly southward. Travel through Earth's recent climate history and see how increasing carbon dioxide, global temperature and sea ice have changed over time. The Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite took this picture the same day. This true-color image shows clouds, possibly from volcanic vapor, hovering over the summit of Manam Volcano while a plume blows toward the west-northwest on June 28, 2009. One of the region’s most active volcanoes, Manam forms a tiny 10-kilometer wide island that rises from the Bismarck Sea 13 kilometers off the shore of Papua New Guinea. In glacial times, the region was considerably wetter, and lakes were correspondingly much larger. Land is shown using short-wavelength-infrared, near-infrared and green. These valleys are spaced roughly 90 degrees apart around the cone-shaped mountain, and lava and pyroclastic debris flows have funneled through these valleys and reached the coast in past eruptions. The volcanic plume appears as a thin blue-gray veil extending toward the northwest over the Bismarck Sea. Ash falls from the eruption were so dense that sunlight was blocked for hours Manam Volcano Volcanic Ash Advisory: VA EMISSIONS TO FL080 MOV W OBS VA DTG: 11/0340Z to 8000 ft (2400 m). Studies suggest that night-shining clouds are becoming brighter and more common, which is linked to the mesosphere getting colder and more humid. Two major rivers, the Chaun and Palyavaam, flow into the bay, which in turn opens into the Arctic Ocean. Papua New Guinea’s Manam Volcano sits in the southwest segment of the Pacific Ring of Fire where the Pacific Plate sinks beneath the Indo-Australian Plate. Complex patterns can be seen in the shallow waters along its coastline, where silt carried by the Geba and other rivers washes out into the Atlantic Ocean. In this image, a volcanic plume flows westward away from the island and toward the mainland. Manam Volcano. This image, captured by the Landsat-8 satellite, shows the view over Western Australia on May 12, 2013. Like rivers of liquid water, glaciers flow downhill, with tributaries joining to form larger rivers. It has one of the longest records of historic eruptions in the SE Pacific region. The island is circular and 10 km in diameter. Original high-resolution image here. This stunning image, taken on July 27, 2000, shows the Lena River in Russia, one of the largest rivers in the world, which is some 2,800 miles (4,400 kilometers) long. Rivulets of brown rock interrupt the carpet of green vegetation on the volcano’s slopes. The Mackenzie River in Canada plays a major role in Arctic climate as warmer fresh water mixes with cold seawater. Infusions of relatively clean ice push in from tributaries in the north. Our expert volcanologists and photographers offer unique travel experiences: Improved early warning systems are crucial for minimising loss of life and effectively planning for volcanic emergencies. The remaining slopes are carpeted in lush tropical vegetation. A changing landscape in the heart of Madagascar, showing drainage into the sea in the Betsiboka Estuary due to decimation of rainforests and coastal mangroves. It is animportant refuge and breeding ground for many species of Siberian wildlife. Image of the Day Land Volcanoes Remote Sensing Land The larger eruptions of Manam produce pyroclastic flows and sometimes lava flows. The valley floors are filled with recent lava flows and scoured by hot volcanic avalanches (called pyroclastic flows). Manam Volcano off the coast of Mainland Papua New Guinea released a faint volcanic plume in late June 2009. It is a stratovolcano. Susan Callery Volcanoes, NASA Goddard Space The Catamarca province is in the northern part of the image, and the La Rioja province is to the south. B15-A, 75 miles (120 kilometers) long, had been drifting slowly towards Drygalski for months before this image was taken. Northwest Australia from the Space Station. In the lower left corner of this image, meltwater lakes can be seen on top of the ice. It is a false-color composite image made using green, infrared, and blue wavelengths. The larger urban area near the bottom of the image is La Rioja, the capital of the province of La Rioja. This image was acquired by the Landsat 7 satellite on February 28, 2000. Manam Volcano in Papua New Guinea, as seen from space on June 16, 2010. Manam volcano located 13 km off the northern coast of New Guinea near Bogia town is one of Papua New Guinea's most active volcanoes. Typically, volcanologists use seismic monitoring as their main indicator of imminent volcanic activity. On 20 March Volcanic Ash Advisory Center (VAAC) Darwin recorded an explosion at the volcano that generated an ash plume, which reached approx. In an area north of the city of Al-Basrah, Iraq, which borders Iran, a former wetland has been drained and walled off. Manam volcano is located 16 km NNE of Bogia in Papua New Guinea. The water patterns are the result of an RGB display of Landsat-8’s red, blue, and ultra-blue bands. Changes in climate have resulted in greater aridity of the Tibetan Plateau, and drying up of the lakes. A series of rocky outcroppings are a prominent feature of this Sahara Desert landscape near the Terkezi Oasis in the country of Chad. Alaska’s Susitna Glacier reveals some of its long, grinding journey in this image, taken from space on August 27, 2009. The Manam Volcano emitted a plume of volcanic ash and/or steam on May 23, 2006. The Ganges River forms an extensive delta where it empties into the Bay of Bengal. In this natural-color image, the islands appear in shades of green and brown — mixtures of vegetation and bare ground. The satellite image combines infrared, red and green wavelengths to form a false-color picture. NASA's Landsat 8 satellite captured water mixing between Georgia's ick-colored Suwannee River and the deep blue Gulf of Mexico. About 120 million people live on the Ganges Delta under the threat of repeated catastrophic floods due to heavy runoff of meltwater from the Himalayas and due to the intense rainfall during the monsoon season. They only form when the temperature drops below –130 degrees Celsius (-200 degrees Fahrenheit), whereupon the scant amount of water high in the atmosphere freezes into ice clouds. Acquired June 10, 2010, this natural-color image shows a small, white plume blowing westward from the summit of Ulawun Volcano. Healthy vegetation appears red in this image; in the center, notice the lone red dot. Every summer, phytoplankton spread across the North Atlantic, with blooms spanning hundreds and sometimes thousands of miles. Much of the information contained in this image came from NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS) onboard the Terra satellite. This image, taken on January 21, 2005, shows a collision between two of the largest floating objects in the world, the Drygalski Ice Tongue and iceberg "B15-A" in Antarctica (B15-A is on the right). Vivid colors and bizarre shapes come together in this artistic, fantastical image, taken from space on June 15, 2005. The Lena Delta Reserve is the most extensive protected wilderness area in Russia. The volcano has two summit craters, and although both are active, most historical eruptions have arisen from the southern crater. The image is enhanced and involved masking, separately enhancing and then reassembling water and land portions of the image. Science Editor: The perspective we get from space allows us to see the scale and scope of changes to these massive bodies of ice that we could not see in any other way. (Dugongs are large marine mammals.) This beautiful aerial photograph shows a multi-layered lenticular cloud hovering near Mount Discovery in Antarctica, a volcano about 70 kilometers (44 miles) southwest of McMurdo. As part of the Arctic Boreal Vulnerability Experiment (ABoVE), NASA scientists are flying over Alaska and Canada, measuring the elevation of rivers and lakes to study how thawing permafrost affects hydrology in the landscape. Located 13 kilometers (8 miles) off the coast of mainland Papua New Guinea, Manam forms an island 10 kilometers (6 miles) wide. Interactive online tool to view volcano webcams and live seismic recordings side-by-side online. Track Earth's vital signs from space and fly along with NASA's Earth-observing satellites in an interactive 3D visualization.
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