This link has been bookmarked by 285 people and liked by 1 people. It was first bookmarked on 09 May 2013, by someone privately.
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L Butler@MPattenhouse I use https://t.co/zLdpXoxql8 30yrs of LandSat imagery everywhere in the world. #worldgeochat
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03 Nov 15
Henri WilloxExclusive timelapse: See climate change, deforestation and urban sprawl unfold as Earth evolves over 30 years.
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03 Oct 15
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02 Oct 15
D AkerblomExclusive timelapse: See climate change, deforestation and urban sprawl unfold as Earth evolves over 30 years.
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09 Jun 15
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Stéphane BezombesLandsat Satellite Images of Climate Change, via Google Earth Engine
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Alicia LewisExclusive timelapse: See climate change, deforestation and urban sprawl unfold as Earth evolves over 30 years.
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08 Oct 14
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NASA created the Landsat program, a series of satellites that would perpetually orbit our planet, looking not out but down. Surveillance spacecraft had done that before, of course, but they paid attention only to military or tactical sites. Landsat was a notable exception, built not for spycraft but for public monitoring of how the human species was altering the surface of the planet. Two generations, eight satellites and millions of pictures later, the space agency, along with the U.S. Geological Survey (USGS), has accumulated a stunning catalog of images that, when riffled through and stitched together, create a high-definition slide show
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TIME is proud to host the public unveiling of these images from orbit, which for the first time date all the way back to 1984.
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central-pivot irrigation systems turning the sands of Saudi Arabia into an agricultural breadbasket — a surreal green-on-brown polka-dot pattern in the desert.
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high-speed retreat of Mendenhall Glacier in Alaska
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West Virginia Mountains decapitated by the mining industry
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denuded forests of the Amazon, cut to stubble by loggers
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It took the folks at Google to upgrade these choppy visual sequences from crude flip-book quality to true video footage. With the help of massive amounts of computer muscle, they have scrubbed away cloud cover, filled in missing pixels, digitally stitched puzzle-piece pictures together
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Consider: a standard TV image uses about one-third of a million pixels per frame, while a high-definition image uses 2 million. The Landsat images, by contrast, weigh in at 1.8 trillion pixels per frame, the equivalent of 900,000 high-def TVs assembled into a single mosaic.
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Stewart Udall. A U.S. Representative of Arizona’s 2nd Congressional District from 1955 to 1961, Udall left the House to become Interior Secretary under Presidents Kennedy and Johnson.
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in 1966, Udall and his staff had an idea. For all the attention the then budding space program was devoting to other planets, our own was being overlooked.
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That meant a satellite or, preferably, multiple satellites that could maintain a steady downward gaze, tracking habitat destruction, urbanization, industrial sprawl and more. Udall’s concern gave rise to Project EROS (Earth Resources Observation Satellites), later renamed Landsat.
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Since NASA launched the first Landsat satellite in 1972, the program has been in constant operation. Seven other satellites followed the first into orbit over the years, sometimes replacing ones that had reached the end of their operational life, sometimes joining ones still in operation. The most recent member of the fleet, Landsat 8, went aloft in February. At an altitude of 438 miles (705 km), the satellites make one orbit of Earth every 84.3 minutes. Keep that up for 41 years, maintaining a photographic record of your travels, and you compile a whole lot of pictures — millions of them, which have since been digitized into petabytes, or billions of bytes of data.
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In 2008 the U.S. government ruled that those pictures, which had been available for sale to the public, should be free. That caught the attention of the folks at Google. While Google Maps and Google Earth were wildly popular with Web users, scientists found the satellite images limiting.
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Landsat’s cameras, on the other hand, revisit the same part of the planet on average once every 16 days.
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In 2009 Google met with Tom Loveland, a lead scientist with the USGS — which is home to the Landsat archives — about turning the trove of images into maps and mini-movies for the use of governments and researchers around the world.
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First, even though the USGS had millions of images in its vaults, there were still more to be had, most of them tucked away in active and former Landsat ground stations around the world. Google began reaching out to the countries that are home to those facilities, working to repatriate as many of the images as it could. In one six-month period, it collected half a million pictures, most of them stored in traditional negatives and prints, and began digitizing them.
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Everything from cloud cover and industrial haze to smoke from forest fires can obscure the view. Stitching together a panorama, to say nothing of making a moving image, often requires hundreds of images, some of which must be digitally scrubbed to filter out atmospheric interference. A single, cloud-free map of the world requires 9,000 discrete images.
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A single pixel measures about 33 yards (30 m) square, or roughly the size of a baseball infield. That seems like a lot of ground to pack into a single dot, and the truth is, no one pixel reveals very much.
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Atlantic KitfoxExclusive timelapse: See climate change, deforestation and urban sprawl unfold as Earth evolves over 30 years.
timelapse geography google environment maps science satellite
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04 Sep 14
Della Gordon" Two generations, eight satellites and millions of pictures later, the space agency, along with the U.S. Geological Survey (USGS), has accumulated a stunning catalog of images that, when riffled through and stitched together, create a high-definition slide show of our rapidly changing Earth. TIME is proud to host the public unveiling of these images from orbit, which for the first time date all the way back to 1984."
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Manuel García-Viñó SánchezImpresionantes imágenes sobre la evolución de la Tierra en los últimos 30 años: cambio climático, deforestación y desarrollo urbano.
Conciencia_ecológica Problemas_medioambientales Ciencias_medioambientales
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Kristina VasquezExclusive timelapse: See climate change, deforestation and urban sprawl unfold as Earth evolves over 30 years.
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Bambi FeighnerExclusive timelapse: See climate change, deforestation and urban sprawl unfold as Earth evolves over 30 years.
timelapse geography google satellite maps environment science time
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Kathleen Morris"Watch the world change over the course of nearly three decades of satellite photography"
environment maps time science timelapse geography google satellite
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Rondonia
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one of the most heavily deforested areas in the Amazon
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loss of forest has been rapid—nearly 25,000 sq. mi. (65,000 sq. km) of forest disappeared from 1978 to 2003.
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fishbone pattern
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influx of settlers and loggers
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caused by an
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farmland, but the heavy rains soon erode the soil, which then forces settlers to clear even more forest. People then convert the leftover land into pasture for growing herds of cattle.
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Brazilian government has reduced the rate of deforestation
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deforestation was up significantly in 2012
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04 Oct 13
Dave M"Watch the world change over the course of nearly three decades of satellite photography"
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25 Aug 13
Alida HansonRT @jeffskohls: Google Research and TIme collaborated to create this phenomenal #sschat resource http://t.co/ldW3Y2ev35 #gafesummit #tcplc
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21 Aug 13
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03 Aug 13
Nancy GovoniWatch the world ( and your community) change over the course of nearly three decades of satellite photography.
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Chris Betcher"Watch the world change over the course of nearly three decades of satellite photography"
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Sara ThompsonVisual satellite imagery of locations over the last 20 years
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Jean LuddyTIME Timelapse powered by Google show students the effects of erosion and climate change on the Earth. Combine the use of this imagery with historical imagery in Google Earth to give students even more perspective on the changes to the Earth's surface over time.
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19 May 13
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17 May 13
Doug JohnsonTime lapse photography of the world 1984 to 2012
timelapse ecology environmental climate satellite geography time
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aquidocs CRDPTimelapse : ce nouveau service de Google vous permet de visualiser les changements de 1984 à aujourd’hui en accéléré sur une ville, une région etc… Vous avez quelques exemples sur le site mais vous pouvez aussi essayer avec l’endroit de votre choix
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16 May 13
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14 May 13
Andrea BackFunktioniert auch für eigene Eingaben, wie Frankfurt (links unten Flughafen)
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