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  • May 10, 2017 - Sochi, Russia - Russian President Vladimir Putin wearing a red jersey with the number 11 during the awards presentation of the Night Ice Hockey League at the Bolshoy Ice Dome May 10, 2017 in Sochi, Russia. The Russian leader, 64, joined in with defence chief Sergey Shoigu and three Olympian champions going on to personally score seven goals to lead his time the Hockey Legends to victory. (Credit Image: © Alexei Druzhinin/Planet Pix via ZUMA Wire)
    RTI20170510_zaa_p138_005.jpg
  • March 7, 2017 - Antarctica - Arctic Sea Ice Extent. The shape of the world is hanging by a thread Ð or rather, according to experts, by a 110 mile-long (177km) rift. That's the extent of a rapidly expanding crack in an enormous ice shelf in Antarctica. When the Larsen C shelf finally splits, the largest iceberg ever recorded (bigger than the US state of Rhode Island and a third the size of Wales) will snap off into the ocean. Widening each day by 3 ft (1 m), the groaning cleft is on the verge of dramatically redrawing the southern-most cartography of our planet and is likely to lead, climatologists predict, to an acceleration in the rise of sea levels globally.The shape of the world is hanging by a thread or rather, according to experts, by a 110 mile-long (177km) rift. That's the extent of a rapidly expanding crack in an enormous ice shelf in Antarctica. When the Larsen C shelf finally splits, the largest iceberg ever recorded (bigger than the US state of Rhode Island and a third the size of Wales) will snap off into the ocean. Widening each day by 3 ft (1 m), the groaning cleft is on the verge of dramatically redrawing the southern-most cartography of our planet and is likely to lead, climatologists predict, to an acceleration in the rise of sea levels globally. (Credit Image: © NASA via ZUMA Wire/ZUMAPRESS.com)
    RTI20170307_shn_z03_302.jpg
  • , Arctic - 7/17/2016 - (Photo by Shannon Wild/VWPics) *** Please Use Credit from Credit Field *** *** Please Use Credit from Credit Field ***
    RTIsipausa_20031279.jpg
  • , Arctic - 7/17/2016 - (Photo by Shannon Wild/VWPics) *** Please Use Credit from Credit Field *** *** Please Use Credit from Credit Field ***
    RTIsipausa_20031285.jpg
  • , Arctic - 7/17/2016 - (Photo by Shannon Wild/VWPics) *** Please Use Credit from Credit Field *** *** Please Use Credit from Credit Field ***
    RTIsipausa_20031219.jpg
  • , Arctic - 7/20/2016 - (Photo by Shannon Wild/VWPics) *** Please Use Credit from Credit Field *** *** Please Use Credit from Credit Field ***
    RTIsipausa_20031251.jpg
  • , Arctic - 7/20/2016 - (Photo by Shannon Wild/VWPics) *** Please Use Credit from Credit Field *** *** Please Use Credit from Credit Field ***
    RTIsipausa_20031212.jpg
  • July 21, 2019 - Ice Berg, Nunavut, Canada (Credit Image: © Richard Wear/Design Pics via ZUMA Wire)
    20190721_zza_rf01_189.jpg
  • Mar 7, 2017 - Antarctica - The shape of the world is hanging by a thread Ð or rather, according to experts, by a 110 mile-long (177km) rift. That's the extent of a rapidly expanding crack in an enormous ice shelf in Antarctica. When the Larsen C shelf finally splits, the largest iceberg ever recorded (bigger than the US state of Rhode Island and a third the size of Wales) will snap off into the ocean. Widening each day by 3 ft (1 m), the groaning cleft is on the verge of dramatically redrawing the southern-most cartography of our planet and is likely to lead, climatologists predict, to an acceleration in the rise of sea levels globally.The shape of the world is hanging by a thread or rather, according to experts, by a 110 mile-long (177km) rift. That's the extent of a rapidly expanding crack in an enormous ice shelf in Antarctica. When the Larsen C shelf finally splits, the largest iceberg ever recorded (bigger than the US state of Rhode Island and a third the size of Wales) will snap off into the ocean. Widening each day by 3 ft (1 m), the groaning cleft is on the verge of dramatically redrawing the southern-most cartography of our planet and is likely to lead, climatologists predict, to an acceleration in the rise of sea levels globally. (Credit Image: © NASA via ZUMA Wire/ZUMAPRESS.com)
    RTI20170307_shn_z03_320.jpg
  • July 21, 2019 - Kayaking Ice Berg Off Coast Of Nunavut, Canada (Credit Image: © Richard Wear/Design Pics via ZUMA Wire)
    20190721_zza_rf01_193.jpg
  • July 21, 2019 - Boats By Ice Berg Off Coast Of Nunavut, Canada (Credit Image: © Richard Wear/Design Pics via ZUMA Wire)
    20190721_zza_rf01_188.jpg
  • Oct 8, 2016 - Antarctica - The shape of the world is hanging by a thread or rather, according to experts, by a 110 mile-long (177km) rift. That's the extent of a rapidly expanding crack in an enormous ice shelf in Antarctica. When the Larsen C shelf finally splits, the largest iceberg ever recorded (bigger than the US state of Rhode Island and a third the size of Wales) will snap off into the ocean. Widening each day by 3 ft (1 m), the groaning cleft is on the verge of dramatically redrawing the southern-most cartography of our planet and is likely to lead, climatologists predict, to an acceleration in the rise of sea levels globally. (Credit Image: © NASA via ZUMA Wire/ZUMAPRESS.com)
    RTI20161008_shn_z03_319.jpg
  • Aug 8, 2002 - Antarctica - Entire Glacier. The shape of the world is hanging by a thread or rather, according to experts, by a 110 mile-long (177km) rift. That's the extent of a rapidly expanding crack in an enormous ice shelf in Antarctica. When the Larsen C shelf finally splits, the largest iceberg ever recorded (bigger than the US state of Rhode Island and a third the size of Wales) will snap off into the ocean. Widening each day by 3 ft (1 m), the groaning cleft is on the verge of dramatically redrawing the southern-most cartography of our planet and is likely to lead, climatologists predict, to an acceleration in the rise of sea levels globally. (Credit Image: © NASA via ZUMA Wire/ZUMAPRESS.com)
    RTI20020808_shn_z03_308.jpg
  • Mar 7, 2016 - Antarctica - The shape of the world is hanging by a thread or rather, according to experts, by a 110 mile-long (177km) rift. That's the extent of a rapidly expanding crack in an enormous ice shelf in Antarctica. When the Larsen C shelf finally splits, the largest iceberg ever recorded (bigger than the US state of Rhode Island and a third the size of Wales) will snap off into the ocean. Widening each day by 3 ft (1 m), the groaning cleft is on the verge of dramatically redrawing the southern-most cartography of our planet and is likely to lead, climatologists predict, to an acceleration in the rise of sea levels globally. (Credit Image: © NASA via ZUMA Wire/ZUMAPRESS.com)
    RTI20160307_shn_z03_315.jpg
  • May 14, 2015 - Antarctica - The shape of the world is hanging by a thread or rather, according to experts, by a 110 mile-long (177km) rift. That's the extent of a rapidly expanding crack in an enormous ice shelf in Antarctica. When the Larsen C shelf finally splits, the largest iceberg ever recorded (bigger than the US state of Rhode Island and a third the size of Wales) will snap off into the ocean. Widening each day by 3 ft (1 m), the groaning cleft is on the verge of dramatically redrawing the southern-most cartography of our planet and is likely to lead, climatologists predict, to an acceleration in the rise of sea levels globally. (Credit Image: © NASA via ZUMA Wire/ZUMAPRESS.com)
    RTI20150514_shn_z03_303.jpg
  • May 4, 2017 - Antarctica - The shape of the world is hanging by a thread or rather, according to experts, by a 110 mile-long (177km) rift. That's the extent of a rapidly expanding crack in an enormous ice shelf in Antarctica. When the Larsen C shelf finally splits, the largest iceberg ever recorded (bigger than the US state of Rhode Island and a third the size of Wales) will snap off into the ocean. Widening each day by 3 ft (1 m), the groaning cleft is on the verge of dramatically redrawing the southern-most cartography of our planet and is likely to lead, climatologists predict, to an acceleration in the rise of sea levels globally. (Credit Image: © NASA via ZUMA Wire/ZUMAPRESS.com)
    RTI20170504_shn_z03_306.jpg
  • May 2, 2002 - Antarctica - Collapsed of Larsen B. The shape of the world is hanging by a thread or rather, according to experts, by a 110 mile-long (177km) rift. That's the extent of a rapidly expanding crack in an enormous ice shelf in Antarctica. When the Larsen C shelf finally splits, the largest iceberg ever recorded (bigger than the US state of Rhode Island and a third the size of Wales) will snap off into the ocean. Widening each day by 3 ft (1 m), the groaning cleft is on the verge of dramatically redrawing the southern-most cartography of our planet and is likely to lead, climatologists predict, to an acceleration in the rise of sea levels globally. (Credit Image: © NASA via ZUMA Wire/ZUMAPRESS.com)
    RTI20020502_shn_z03_305.jpg
  • May 4, 2017 - New York, United States - Thousands of New Yorkers took to the streets, gathering outside the Intrepid Sea, Air & Space Museum on May 4th,2017; to protest Donald J. Trump’s first visit to New York City since becoming president, and to show how unpopular and unwelcome he is in his hometown, and to condemn Trump and his regime of hatred and discrimination. (Credit Image: © Erik Mcgregor/Pacific Press via ZUMA Wire)
    RTI20170504_zaa_p133_426.jpg
  • July 21, 2019 - Kayaking, Nunavut, Canada (Credit Image: © Richard Wear/Design Pics via ZUMA Wire)
    20190721_zza_rf01_192.jpg
  • July 21, 2019 - Kayaking, Nunavut, Canada (Credit Image: © Richard Wear/Design Pics via ZUMA Wire)
    20190721_zza_rf01_191.jpg
  • July 21, 2019 - Person In Boat, Nunavut, Canada (Credit Image: © Richard Wear/Design Pics via ZUMA Wire)
    20190721_zza_rf01_194.jpg
  • July 21, 2019 - Kayakers, Nunavut, Canada (Credit Image: © Richard Wear/Design Pics via ZUMA Wire)
    20190721_zza_rf01_195.jpg
  • July 21, 2019 - Iceberg, Nunavut, Canada (Credit Image: © Richard Wear/Design Pics via ZUMA Wire)
    20190721_zza_rf01_057.jpg
  • , Arctic - 7/21/2016 - (Photo by Shannon Wild/VWPics) *** Please Use Credit from Credit Field *** *** Please Use Credit from Credit Field ***
    RTIsipausa_20031362.jpg
  • acquired August 31, 2015<br />
download large image (26 MB, JPEG, 12000x12000)<br />
acquired August 31, 2015<br />
download large image (26 MB, GOV/IMAGES/IMAGERECORDS/86000/86589/)<br />
There was a time when the Northwest Passage was a sort of maritime Holy Grail, a route so desired and sought after, but so elusive. For most of the recorded history of North America, the Passage has been nearly impassable and often deadly. But with the modernization of ships and the warming of the Earth, cruising and sailing through the Canadian Archipelago from Baffin Bay to the Beaufort Sea has grown more common and easier. But it's not necessarily easy.<br />
The top image above shows the Northwest Passage as it appeared on August 31, 2015, to the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi-NPP satellite. The second image was acquired the same day by the Operational Land Imager (OLI) on Landsat 8. The white box on the top image shows the area depicted in the Landsat view. Both images are natural color. Note that much of the white covering the Northwest Passage in the VIIRS image is cloud cover, not sea ice.<br />
The Northwest Passage is a complex, winding maze of sounds, channels, bays, and straits that pass through often ice-choked Arctic waters. Mariners refer to two main routes: a southern passage and a northern passage.<br />
The southern route generally follows the one taken by Roald Amundsen from 1903–1906, when his crew completed the first successful transit through the region. The southern passage goes south of Prince of Wales Island and Victoria Island (and sometimes King William Island) and enters the Beaufort Sea south of Banks Island. It includes several narrow and shallow waterways that are better suited to small ships than large commercial vessels. This southern or "Amundsen" passage has been open for several weeks in the summer of 2015.<br />
The northern passage runs through Lancaster Sound, Parry Channel, and McClure Strait - waterways that are wider, deeper, and more suited to large sh
    rtisipausa_20553510.jpg
  • View Image Comparison<br />
View Both Images<br />
Zachariæ Isstrøm has become the latest Greenland glacier to undergo rapid changes in a warming world. Research published November 2015 in Science found that Zachariæ Isstrøm broke loose from a stable position in 2012 and entered a phase of accelerated retreat.<br />
The consequences will be felt for decades to come. The reason? Zachariæ Isstrøm is big. It drains ice from a 91,780 square kilometer (35,440 square mile) area of northeast Greenland. That's about 5 percent of the Greenland Ice Sheet. The glacier holds enough water to raise global sea level by more than 46 centimeters (18 inches) if it were to melt completely. It is already shedding billions of tons of ice into the far North Atlantic each year.<br />
"North Greenland glaciers are changing rapidly," said lead author Jeremie Mouginot of the University of California, Irvine (UCI). "The shape and dynamics of Zachariæ Isstrøm have changed dramatically over the last few years. The glacier is now breaking up and calving high volumes of icebergs into the ocean, which will result in rising sea levels for decades to come."<br />
The change is apparent in the images above. The top image was acquired by the Enhanced Thematic Mapper Plus (ETM+) on Landsat 7 on August 5, 1999, when the glacier was stable. The second image was acquired on August 2, 2015, with the Operational Land Imager (OLI) on Landsat 8. The second image shows how the ice shelf and glacier have melted and retreated substantially. Turn on the image comparison tool to see the difference.<br />
As of 2015, the glacier is losing 5 billion tons of ice every year. The time-lapse animation above shows the glacier's retreat during the 2015 melt season. The animation is composed of 26 natural-color images acquired by Landsat 8 from May 19 through October 1, 2015.<br />
To better understand the changes taking place at Zachariæ Isstrøm, Mouginot and his colleagues from NASA's Jet Propulsion Laboratory (JPL), and the University of Kansas compil
    rtisipausa_20553503.jpg
  • By mid-summer each year, vibrant blue meltwater lakes dot the surface of the Greenland Ice Sheet. These lakes, also known as melt ponds, store a large amount of fresh water throughout the season, and they are an important part of the ice sheet's surface hydrology.<br />
The images above were acquired on July 15, 2015, by the Operational Land Imager (OLI) on Landsat 8. They show meltwater lakes on the ice near Greenland's west coast, about 100 kilometers (60 miles) southeast of Ilulissat. Dark debris coats the ice surface in some areas.<br />
"One reason we're interested in the lakes is because they might be important for speeding up the ice sheet," said Allen Pope, a glaciologist at the National Snow and Ice Data Center. Once the lakes grow large enough, Pope notes, they can force open crevasses in the ice. The melt water can then move through the crevasse to the base of the glacier and temporarily speed up ice flow across the bedrock below.<br />
Ultimately, the flowing ice will reach one of the many outlet glaciers that line Greenland's coast. Nordenskiöld Glacier, for example, is visible in the top image. Greenland's fastest-moving glacier, Jakobshavn, is immediately north of this image. Glaciers like these are the gateway through which ice can exit the ice sheet, enter the ocean, and contribute to<br />
sea level rise.<br />
So how large are these lakes? As the bottom, close-up image shows, size varies. Some lakes have a greater surface area than others, but that's not the only difference. Their depth can vary dramatically too, which becomes apparent in the various shades of blue.<br />
"Intuitively, you see this beautiful blue color, and you know the darker the blue, the deeper the lake," Pope said while describing an image of the same area as it appeared in summer 2014. "Which is nice, but we want to be able to quantify that."<br />
According to Pope, some lakes are shallow and lagoon-like, while others are as much as 9 meters (30 feet) deep. Pope and colleagues have been working on a technique to de
    rtisipausa_20553493.jpg
  • May 10, 2017 - Sochi, RUSSIA - Russian President Vladimir Putin takes part in a gala match of the Night Hockey League teams in the Bolshoy Ice Arena in the Black Sea resort of Sochi, Russia, Wednesday, May 10, 2017. YURI KOCHETKOV/POOL/PI (Credit Image: © Prensa Internacional via ZUMA Wire)
    RTI20170510_zaa_p124_003.jpg
  • If a volcano erupts and there is no one there to see it, did it really erupt? Before the advent of satellites and seismic monitoring, volcanic eruptions in distant places would mostly go unnoticed unless they were absolutely extraordinary. Today, scientists can pick up signatures of events occurring far from any human observers.<br />
That was the case in late April and early May 2016 when satellite sensors detected signs of a volcanic eruption in the far South Atlantic Ocean between South America and Antarctica. Mount Sourabaya, a stratovolcano on Bristol Island, appeared to be erupting for the first time in 60 years. There are no human residents of the island, which is almost always covered in glacial ice and snow.<br />
The Operational Land Imager (OLI) on the Landsat 8 satellite acquired these two false-color images on April 24 and May 1, 2016. The images were built from a combination of shortwave-infrared, near-infrared, and red light (Landsat bands 6-5-4) that helps detect the heat signatures of an eruption. Both images show the heat signatures (red-orange) of what is likely hot lava, while white plumes trail away from the crater. The band combination makes the ice cover of the island appear bright blue-green.<br />
With a roughly rectangular shape that is 12 kilometers by 14 kilometers (7 by 8.5 miles), Bristol Island is one of the largest in the South Sandwich Islands chain. The highest peak on the island stands 1100 meters (3,609 feet) above sea level. Due to the remote location and the lack of landing sites amidst its ice cap, the stratovolcano is one of the least studied in the world. The last known eruption on Bristol Island was reported in 1956.<br />
References<br />
Culture Volcan (2016, May 3) Possible activité éruptive sur le volcan Bristol Island. Accessed May 9, 2016.<br />
Smithsonian Global Volcanism Program (2016) Bristol Volcano. Accessed May 9, 2016.<br />
South Sandwich Islands Volcano Monitoring Blog (2016, May 2) Eruption on Bristol Island. Accessed May 9, 2016.<br />
Volcano Discover
    rtisipausa_17601802.jpg