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From: Dan Richter (1:317/3)
To: All
Date: Fri, 09.04.21 13:00
MODIS Pic of the Day 09 April 2021
April 9, 2021 - Great Salt Lake


Great Salt Lake

On April 4, 2021, the Moderate Resolution Imaging Spectroradiometer
(MODIS) on board NASA’s Terra satellite acquired a stunning true-color
portrait of Utah’s two-toned Great Salt Lake centered on a background
of tans and white. The waters of the lake contrast not only with each
other, but also stand out as a saline oasis in an otherwise arid basin
housing scant vegetation and copious salt flats. Tall mountains
surround the basin and are capped with snow—a truly precious commodity
that holds precipitation fast until warm weather, when it is released
as water. That water will be used by people for drinking, agriculture,
and industry—and some will travel through rivers and streams to add
water to the Great Salt Lake.

The present Great Salt Lake stretches roughly 75 miles (121 km) in
length and 35 miles (56 km) wide, with a maximum depth of about 33 feet
and an average depth of 14 feet. It is effectively split into two by a
man-made causeway, which runs across the entire like and stops the
free-flow of water between the northern and southern arm. The
plum-colored northern arm, known as Gunnison Bay, contains roughly
thirty percent salt. More freshwater rivers run into the southern
portion (Gilbert Bay) so not only are the green waters less saline than
the north, but the salinity can fluctuate between 6 and 27 percent.

Image Facts
Satellite: Terra
Date Acquired: 4/4/2021
Resolutions: 1km (150.1 KB), 500m (406.5 KB), 250m (287.5
Bands Used: 1,4,3
Image Credit: MODIS Land Rapid Response Team, NASA GSFC

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