20 Jul '13, 2pm

Taz River, Russia [image] #NASA

Editor’s Note: Today’s caption is the answer to Earth Observatory’s July Puzzler. Change is often elusive to see, visible only in the contrast between before and after. But on June 18, 2013, the Operational Land Imager on the Landsat 8 satellite captured Russia’s Taz River in transition (middle image). Ice was breaking up on the river, while sediment-laden spring floods piled up behind the unmoving mass. The wetlands and tributaries surrounding the river were similarly suspended in a half-frozen, half-thawed state. The area had been frozen a little more than a week earlier (June 9), when Landsat 8 acquired the top image, and was entirely ice free just over two weeks later (July 4), when the lower image was acquired. The Taz River is one of many that drain into the Arctic Ocean and its surrounding seas. But as Arctic rivers go, the Taz is relatively minor. About 33 cubic ki...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=81680&s...

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Taz River, Russia: Half-frozen, half-thaw, the ...

earthobservatory.nasa.gov 19 Jul '13, 10pm

Editor’s Note: Today’s caption is the answer to Earth Observatory’s July Puzzler. Change is often elusive to see, visible ...

Taz River, Russia: Half-frozen, half-thaw, the ...

earthobservatory.nasa.gov 19 Jul '13, 10pm

Editor’s Note: Today’s caption is the answer to Earth Observatory’s July Puzzler. Change is often elusive to see, visible ...

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