Google Earth newest Timelapse feature lets users look back from the current day all the way to 1984 and see how both human activity as natural forces have changed the face of Earth over the last 40 years, writes Rebecca Moore, director of Earth Engine & Outreach at Google Earth, in a public announcement.
The new timelapse feature makes use of some 24 million satellite photos gathered by Google Earth from NASA, the US Geological Survey (USGS), the European Union, and the European Space Agency (ESA). More than 2 million processing hours were needed to process these 20 petabytes of imagery into a single 4.4 terapixel-sized global, zoomable video mosaic.
Google itself has highlighted a few areas of geological interest and produced a series of video animations:
Mount Pinatubo in the Philippines, where the huge 1991 eruption was followed by decades of mudflows that formed from the massive amounts of ash and rock that were deposited.
The Columbia Glacier that flows from the Chugach Mountains into a narrow fjord that leads into Prince William Sound in southeastern Alaska. British explorers first surveyed it in 1794, its nose—or terminus—extended south to the northern edge of the drowned glacial valley. The glacier held that position until 1980, when it began a rapid retreat that continues today.
The shifting coastline around Chatham, Massachusetts. The changes to the sandbars are sometimes subtle and sometimes dramatic. Storms cut new inlets through the beach, changing current patterns and subsequent the erosion and deposition of sediments.
A timelapse look at the changing Aral Sea, Kazakhstan. The lake was once the world’s fourth largest body of inland water, but has been shrinking since the 1960s after the rivers that fed it were diverted by irrigation projects.
Open-pit mine in a coal mining district in southern Brandenburg. As Germany's black coal industry shuts down, mines turn into lakes and new ecologically valuable biotopes.
The new imagery is free to access and use, like the rest of Google Earth, and will be updated annually.
https://www.forbes.com/sites/davidbressan/2021/04/18/google-earths-new-timelapse-feature-lets-you-see-how-our-planet-has-changed-in-four-decades/
2021-04-18 12:43:06Z
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