Earth Snapshot RSS Feed Twitter

Posts tagged Tunisia

Climate Change and Rainfall in the Chott el Djerid Basin, Tunisia

33.8N 8.4E

June 5th, 2013 Category: Climate Change, Wetlands VIIRSSuomi-NPP

Tunisia – June 4th, 2013

The Chott el Djerid is an ephemeral salt playa situated in an arid zone closed basin which has a catchment area of 10500km2. The Chott el Djerid itself has a surface area of approximately 5360km2. The interpretation of climate change in this period and its relation to sediments, specifically lake shoreline deposits found within the Chott el Djerid basin, have become more controversial in recent times. Studies have shown that due to climate change, rainfall in the basin has been decreasing in recent years. The recorded presence of surface water on the Chott el Djerid can be related to rainfall events in the basin (click here for more information).

Dust Plume Stretching from Tunisia to Sicily, Italy

33.8N 10.8E

May 22nd, 2013 Category: Dust Storms

Mediterranean – May 22nd, 2013

A thick plume of dust blows off the coast of Tunisia and over the Mediterranean Sea, fanning out as it spreads towards Sicily, in southern Italy. The dust obscures much of the Gulf of Gabès, the Kerkennah Islands and Djerba.

Sediments Around Kerkennah Islands, Tunisia

34.6N 11.0E

February 5th, 2013 Category: Sediments

Tunisia – February 2nd, 2013

Most reliable models of climatic observation and forecast show that the south of the Mediterranean perimeter is threatened by important variations of environmental conditions. In parts of the Kerkennah archipelago, which is visible here off the coast of Tunisia, ringed by bright green and brown sediments, changing marine conditions and overfishing have caused a decrease in fish quantity and favoring of agriculture over fishing. There has also been an enlargement of sebkhas (low, salty lands that are liable to flooding hazards) that might likely be caused by climatic and environmental evolution like sea level rise and subsidence, making such areas more vulnerable to sea surges (click here to read more).

Sediments in Gulf of Gabès, Tunisia

34.2N 10.8E

December 2nd, 2012 Category: Sediments

Tunisia – December 1st, 2012

Near the center of this image is the Gulf of Gabès, a gulf on Tunisia’s east coast in the Mediterranean Sea, off North Africa. The gulf roughly spans the coast from the town of Mahrès in the Sfax Gouvernorate to the island of Djerba.  Here, greenish phytoplankton and sediments can be seen in the gulf, spreading off the northwest coast of Djerba, and surrounding the Kerkennah Islands.

Salt Lakes in Algeria and Tunisia

36.3N 6.1E

May 6th, 2012 Category: Deserts, Lakes, Salt Flats

Algeria and Tunisia - April 14th, 2012

The Mediterranean coast from Morocco (left), across Algeria, to Tunisia (right) is green and vegetated, in contrast with the sands of the Sahara Desert to the south. Two large lakes can be observed amidst the desert sands, however: Chott el Djerid and Chott Ech Chergui.

The former is located in Tunisia. It is a large endorheic salt lake with a width of 20 km (12 mi) at its narrowest point, and a length of over 250 km (160 mi). Here, it appears various shades of tan, with the lighter areas likely indicating a salt crust.

Chott Ech Chergui is a large endorheic salt lake in northwestern Algeria, located at in the Saharan Atlas. The lake has an area of about 2000 km² and is one of the largest lakes in Algeria. Chott Ech Chergui is designated a Ramsar wetland of international importance.