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BlackSea.A2004143.1105.150x115.jpg
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Data acquired May 22, 2004
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Data acquired May 22, 2004
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Data acquired May 22, 2004
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THE BLACK SEA
Phytoplankton blooms and plumes of sediment form the bright blue swirls that
ring the Black Sea in this Moderate Resolution Imaging Spectroradiometer (MODIS)
image.
Sediment flows into the sea through the vast network of rivers that empty into
it. The sediment tints the water tan near the mouth of the river and green as
the dirt diffuses through the water. In this image, sediment clouds the Sea of
Azov in the upper right corner of the image. Two powerful rivers, the Don and
the Kuban, flow into the shallow sea, depositing silt in the waters.
Sediment is not the only thing that flows into the Black Sea on river water.
Some of Europe’ largest rivers also deposit fertilizer from agricultural run-off
in the Black Sea, and that feeds frequent phytoplankton blooms. Phytoplankton
are microscopic plants that can be seen from space when large colonies grow in
one place. Most of the agricultural run-off enters the Sea through the Danube
River, the bright green area on the upper left side of the Sea. The water around
the river’s mouths is tinted dark green, probably from the growth of surface
phytoplankton. The phytoplankton blooms are a problem because their growth and
decay can consume all of the available oxygen in a region, creating dead zones
where fish cannot live.
From the upper left corner, the countries around the Sea are Moldova, Ukraine,
Russia, Georgia, Turkey, Bulgaria, and Romania. The Moderate Resolution Imaging
Spectroradiometer (MODIS) on NASA’s Aqua satellite acquired this image on May
22, 2004.
--------------------------------------------------------------------------------
Jeff Schmaltz, MODIS Rapid Response Team, NASA/GSFC
Published May 25, 2004
Data acquired May 22, 2004
Source: Aqua > MODIS
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