File:Grounded in the Caspian Sea.jpg

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DescriptionGrounded in the Caspian Sea.jpg	On February 4, 2017, the Operational Land Imager (OLI) on Landsat 8 acquired natural-color images that beautifully demonstrate the variety of ice types that can form in the northern Caspian Sea. The Caspian stretches about 1,000 kilometers (600 miles) from Kazakhstan to Iran. In the north, temperatures are colder, and the water is fresher (less saline) and shallower. As a result, northern areas are more prone to freezing in wintertime. The first image shows the northwestern Caspian where it meets western Kazakhstan. The brown areas are part of the Volga Delta. Just offshore, in the shallowest parts (only meters deep), a well-developed expanse of consolidated ice appears white. Farther offshore, a large field of old, hummocked, white and gray-white ice has detached. (When pieces of ice are pushed together, some ice is forced upward and downward into so-called ‘hummocks.’) This ice is slowly drifting in a giant polynya which is covered by young, thin ice (nilas).
Date	4 February 2017
Source	https://earthobservatory.nasa.gov/images/89742/grounded-in-the-caspian-sea
Author	NASA Earth Observatory images by Joshua Stevens, using Landsat data from the U.S. Geological Survey. Caption by Kathryn Hansen, with image interpretation by Alexei Kouraev and Piter Bukharitsin.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	04:43, 11 February 2021		3,255 × 2,170 (9.38 MB)	StellarHalo (talk \| contribs)	{{Information \|Description=On February 4, 2017, the Operational Land Imager (OLI) on Landsat 8 acquired natural-color images that beautifully demonstrate the variety of ice types that can form in the northern Caspian Sea. The Caspian stretches about 1,000 kilometers (600 miles) from Kazakhstan to Iran. In the north, temperatures are colder, and the water is fresher (less saline) and shallower. As a result, northern areas are more prone to freezing in wintertime. The first image shows the no...

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