HomeAboutActivitiesMapsPhotosPublicationsNews
 
Home >> Deposition

Tag: Deposition

Estimated ground deposition of cesium-137 from nuclear-weapon fallout Estimated ground deposition of cesium-137 from nuclear-weapon fallout
The graph shows the estimated ground deposition of cesium-137 from nuclear weapon testing fallout. Cesium- 173 deposition from nuclear- weapon fallout have severe effects on human health. Based on estimaed doses to the Arctic population, nuclear weapon fallout will contribute to 750 additional cases of fatal cancer.
13 Feb 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
2
Ground deposition of 137Cs after the Chernobyl accident Ground deposition of 137Cs after the Chernobyl accident
The Chernobyl nuclear accident was a devasting catastrophe with effects measurable over a huge distance. This map shows areas that have elevated levels of cesium 137 in Nordic area, in the years after the Chernobyl accident.
13 Feb 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
4
Ore production and waste generation at Ok Tedi Mine Ore production and waste generation at Ok Tedi Mine
The Ok Tedi mine is located high in the rain forest covered Star Mountains of Papua New Guinea. Prior to 1981 the local Wopkaimin people lived a subsistence existence in one of the most isolated places on earth. That was before the 10 000 strong town of Tabubil suddenly appeared in the middle of their community. The Ok Tedi mine was built on the world’s largest gold and copper deposit (gold ore capping the main copper deposit). From the very begi...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
4
How long does it take for some commonly used products to biodegrade? How long does it take for some commonly used products to biodegrade?
Pollution emitted in industrial areas represents a threat to human health and the surrounding natural resources. We have a tendency to believe that the production processes are the only source of environmental damage, and often forget about the possible long-term effects of harmful production practices. When deposited, there is quite some difference in the amount of time needed for degradation of common products and packaging, and the environmen...
17 May 2005 - by UNEP/GRID-Arendal
5
Distribution of coldwater and tropical coral reefs Distribution of coldwater and tropical coral reefs
Coral reefs are marine ridges or mounds, which have formed over millennia as a result of the deposition of calcium carbonate by living organisms, predominantly corals, but also a rich diversity of other organisms such as coralline algae and shellfish. The coldwater reefs are highly susceptible to deep-sea trawling and ocean acidification from climate change, which has its greatest impacts at high latitudes, while tropical reefs will become severe...
01 Feb 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
5
Estimated total reactive nitrogen deposition from the atmosphere (wet and dry) in 1860, early 1990s, and projected for 2050 Estimated total reactive nitrogen deposition from the atmosphere (wet and dry) in 1860, early 1990s, and projected for 2050
Atmospheric deposition currently accounts for roughly 12% of the reactive nitrogen entering terrestrial and coastal marine ecosystems globally, although in some regions, atmospheric deposition accounts for a higher percentage (about 33% in the United States). (Note: the projection was included in the original study and is not based on MA scenarios.)
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
4
Coldwater coral reefs, distribution Coldwater coral reefs, distribution
Scientists are just beginning to learn about the many species in the remote, deep waters of the polar oceans. Corals, for example, are not limited to the warm, shallow waters of the tropics. They also exist in many cold, deep waters all over the world, including Arctic and sub-Antarctic waters. Coral reefs are marine ridges or mounds, which have formed over millennia as a result of the deposition of calcium carbonate by living organisms, predomin...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
4
Coldwater coral reefs, distribution Coldwater coral reefs, distribution
Scientists are just beginning to learn about the many species in the remote, deep waters of the polar oceans. Corals, for example, are not limited to the warm, shallow waters of the tropics. They also exist in many cold, deep waters all over the world, including Arctic and sub-Antarctic waters. Coral reefs are marine ridges or mounds, which have formed over millennia as a result of the deposition of calcium carbonate by living organisms, predomin...
21 May 2010 - by Hugo Ahlenius, UNEP/GRID-Arendal
3
PCDD (dioxin) in the atmosphere and deposition, 2003 PCDD (dioxin) in the atmosphere and deposition, 2003
No data.
28 Mar 2006 - by Bounford.com and UNEP/GRID-Arendal
3
Coral reefs at risks Coral reefs at risks
There are two distinct regions in which coral reefs are primarily distributed: the Wider Caribbean (Atlantic Ocean) and the Indo-Pacific (from East Africa and the Red Sea to the Central Pacific Ocean). - The diversity of coral is far greater in the Indo-Pacific, particularly around Indonesia, the Philippines, and Papua New Guinea. Many other groups of marine fauna show similar patterns, with a much greater diversity in the Indo-Pacific region. ...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
5