Tag: Sea

The inlet of the bay of Kara-Bogaz-Gol before and after the construction of the dam (Turkmenistan, Caspian Sea)
Kara-Bogaz-Gol is a lowland area that forms a highly saline bay on the east side of the Caspian Sea, in Turkmenistan. In Soviet times it was decided to set up a dam to block the flow of saline water from the bay to the C...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Annual flow of water to the Caspian Sea
Most of the water flowing into the sea comes from coastal rivers – currently supplying 300 to 310 cubic km a year. The Volga alone accounts for 80% of inflow. But it has dropped substantially during the 20th century, dec...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Gross National Income (GNI) per capita, for the Caspian Sea region countries
Purchasing power parity (PPP) measures how much a currency can buy in terms of an international benchmark (usually dollars), since the cost of goods and services differs between countries. PPP is below the value of a US ...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
The Caspian Sea drainage basin
The Caspian Sea runs north and south, extending over 1,200 km, with an average width of 320 km. It covers approximately 400,000 sq km (an area slightly larger than Germany). The population of the region is about 14 milli...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Total sturgeon catch in the Caspian Sea, 1932-2000
Pressure from the international community having raised awareness of its value as a bio-resource, the region is now struggling to save the sturgeon. To protect the vulnerable fish species more then 100 million sturgeon a...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Mean sea surface temperature on the Caspian Sea
Recent research by the Caspian Environment Programme estimates the number of living seals to be as low as 150,000. A further reduction in ice cover due to a warming climate could well be one of the major threats facing t...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
The Caspian Sea coastlines vulnerable to flooding
Most of the water flowing into the sea comes from coastal rivers. The quantity and quality of this water, particularly that of the Volga, are key variables in the balance of the Caspian Sea. To this must be added rainfal...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Discharge of pollutants in the Caspian Sea - mercury and cadmium
Mercury and Cadmium are classified as toxic metals, and are persistant pollutants in the environment, that stays in the system and is accumulated through the food chains. The main release of these pollutants are on the w...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Toxic metals in sediments of the Caspian Sea (Arsenic, Mercury and Copper)
Sampled sediments in the Caspian Sea show that arsenic is spread out at multiple locations, but primarily on the southern and southwest shores of the Sea, on the shores of Iran and Azerbaijan - where also Copper is accum...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Comb-jelly (Mnemiopsis leidyi) spreading through the Caspian Sea (invasive species)
The comb jelly (Mnemiopsis leidyi) is well adapted to the habitat (salinity, temperature, and food range) and reproduces faster than endemic species. As it eats the same food as them, it has had a drastic effect on their...
04 Oct 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Kara-Bogaz-Gol - restoration of previous water levels after 1992 (Turkmenistan, Caspian Sea)
Kara-Bogaz-Gol is a lowland area that forms a highly saline bay on the east side of the Caspian Sea, in Turkmenistan. In Soviet times it was decided to set up a dam to block the flow of saline water from the bay to the C...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Kara-Bogaz-Gol - water level variation over time
Comparing a series of satellite images from different periods a Californian hydrologist discovered in 1983 that a huge white spot had taken the place of the vast Kara-Bogaz- Gol (literally “dark gullet” in Turkmen) in th...
07 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Oil production and forecasts - Kazakhstan, Azerbaijan and Turkmenistan
For the Caspian Sea countries of Azerbaijan, Kazakhstan and Turkmenistan, the extraction of oil represents a significant resource, and the production has been increasing since independence. Numbers should however be trea...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Ice cover on the North Caspian Sea
Higher winter temperatures, possibly related to changes in global climate observed in recent years, have caused thinner ice coverage and restricted the traditional reproduction grounds of the Caspian seal in the shallow ...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Caviar imports to Japan, European Union and United States
The Caspian area is the world’s main producer of wild caviar (83% in 2003) and supplies the three largest markets, the European Union, Japan and the USA. The construction of several hydroelectric power plants and dams al...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Caspian sea climate, mean annual temperature and precipitation
With the Caspian Sea's north-south alignment, stretching over a distance of approximately 10 degrees, the water body crosses several different climatic regions. The northernmost regions, with Russia and Kazakhstan are ch...
07 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Pollutants in sediments of the Caspian Sea (pesticides, nickel and chromium)
Sampled sediments in the Caspian Sea show that the accumulation is at its worst in the south and southwestern shores of this inland sea, off the shores of Iran and Azerbaijan. Sampled pollutants presented in this map are...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Transportation projects converging on the Caspian Sea
For many years, coastal navigation has connected republics in the former Soviet Union. It used the only outlet from the Caspian, the Volga-Don canal, which connects the Black Sea and the Russian canal system to the Balti...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Population density and urban centers in the Caspian Sea region
Apart from two large urban areas – Baku-Sumgait and Makhachkala-Kaspiisk – and the Iranian coast on the southern shore, a very densely populated coastal strip where one agglomeration leads into the next, most of the popu...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Discharge of selected pollutants
Nitrogen and phosphorous represents nutrients that can be seen as pollutants, as large concentations of those increase eutrophication. Nutrients are present in primarily commercial fertilisers and in sewage. A measure of...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal