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Posts tagged Salt marsh

Rann of Kutch by Pakistan-India Border

24.0N 70.1E

July 27th, 2010 Category: Salt Flats

India and Pakistan - July 22nd, 2010

India and Pakistan - July 22nd, 2010

This APM image shows part of the Great Rann of Kutch, a seasonal salt marsh located in the Thar Desert in the Kutch District of Gujarat, India and the Sindh province of Pakistan.

The border between the two countries is situated in the upper left quadrant, following the outline of the lighter green area, with Pakistan above and India below. An area of hills exceeding 200 meters in height can be observed in that quadrant, in Pakistan.

The Mississippi River Delta, USA – July 14th, 2009

29.9N 90W

July 14th, 2009 Category: Image of the day, Rivers

USA - June 24th, 2009

USA - June 24th, 2009

The Mississippi River Delta is the modern area of land (the river delta) built up by alluvium deposited by the Mississippi River as it slows down and enters the Gulf of Mexico.

Here, a great deal of golden tan, rust and dark brown colored sediments can observed flowing from the lobes of the delta into the gulf.

The deltaic process has, over the past 5,000 years, caused the coastline of south Louisiana to advance gulfward from 15 to 50 miles (24 to 80 km).

It is a biologically significant region, comprising 3 million acres (12,000 km²) of coastal wetlands and 40% of the salt marsh in the contiguous United States.

It is also a commercially significant region, supporting the economy of New Orleans with significant shipping traffic, providing 16 to 18 % of the US oil supply, and providing 16 % of the US’s fisheries harvest, including shrimp, crabs, and crayfish.

Lakes Near Kazakhstan-Russia Border – June 18th, 2009

53.2N 73.1E

June 18th, 2009 Category: Image of the day, Lakes

Kazakhstan lakes - June 8th, 2009

Kazakhstan lakes - June 8th, 2009

Lake Chany

Lake Chany

Lake Seletyteniz and others

Lake Seletyteniz and others

The landscape near the border of Russia (top) and Kazakhstan (center, bottom) is dotted by lakes. The largest are Lake Chany (top right), Lake Seletyteniz (center) and Lake Tengiz (bottom left).

Although Lake Chany is not well-known outside of Russia, it is one of the country’s largest lakes.

Lake Chany is a shallow, freshwater lake that has a fluctuating water level, which can change from season to season and year to year.

Ecosystems surrounding the lake include a mixture of wetlands and salt marshes, as well as birch and aspen forests. Furthermore, the lake is critically important for the migratory birds of Siberia.

The cluster of lakes in the center of the image is just over the Kazakhstan border. The largest one, Seletyteniz (far right in thumb) is located at the bottom of a large depression. It has an area of 777 km², although this is quite variable. The lake reaches a maximum depth of 3.2 m; the source of its water is melting snow.

The eastern and northern shores of Lake Seletyteniz are high and straight, while in the west and south they are flanked by salt marshes.

Green Waters and Salty Shores of Lake Urmia, Iran

37.6N 45.4E

May 21st, 2009 Category: Lakes

Lake Urmia, Iran - May 14th, 2009

Lake Urmia, Iran - May 14th, 2009

Lake Urmia is a salt lake in northwestern Iran near Turkey. The lake is between the provinces of East Azerbaijan and West Azerbaijan, west of the southern portion of the similarly shaped Caspian Sea.

It is the largest lake in Iran, and the second largest salt water lake on earth, with a surface area of approximately 5,200 km² (2,000 miles²).

At its maximum extent, it is about 140 km (87 miles) long, and 55 km (34 miles) wide. Its deepest point is approximately 16 m (52 ft) deep.

The lake lies in the bottom of the large central depression of the Azerbaijan region in northwestern Iran, at an elevation of 4,183 feet (1,275 m) above sea level.

The basin is surrounded by mountains in the west and north, by plateaus in the south, and by plateaus and volcanic cones in the east.

There is a cluster of about 50 tiny islands in the southern portion of the lake. The waters of the lake are green in color due to copious algae that provide food for brine shrimp.

The shoreline varies with the lake level; when the water is high, it extends into large salt marshes to the east and south. Here, these salt marshes appear whitish as they are not covered by water.

Sediments Spill from Mouth of Indus River

January 25th, 2009 Category: Rivers

The Rann of Kutch, India - January 20th, 2009

The Rann of Kutch, India - January 20th, 2009

Sediments, surrounded by an algal or phytoplankton bloom, spill from the mouth of the Indus River into the Gulf of Kutch, and gather along the coasts of India and Pakistan.

Inland, the Rann of Kutch, a seasonally marshy region in the Thar Desert between India and Pakistan, is visible in white in the upper right quadrant.