Oct 16

Radioactive cesium found in plankton off N-plant (NHK, Oct. 15, 2011):

High concentrations of radioactive cesium have been found in plankton from the sea near the Fukushima Daiichi Nuclear Power Plant.

Researchers from Tokyo University of Marine Science and Technology collected plankton in waters up to 60 kilometers from the coast of Iwaki City in July. They found 669 becquerels per kilogram of radioactive cesium in animal plankton from waters 3 kilometers offshore.

Continue reading »

Tags: , , , , , , , , , , ,

Apr 06

Studies seem to indicate that oceans, which are major carbon sinks, may have had enough. If so, the consequences are BAD, writes Jayalakshmi K.

Ocean deserts, which are non-productive areas, have increased by 15 per cent in the period 1998-2007, according to a study done by the National Oceanic and Atmospheric Administration (NOAA) in the US and the University of Hawaii. This translates into a total of 6.6 million sq km. On the whole, there are 51 million sq km of such desert zones. The data was collected by Nasa’s orbiting SeaStar craft.

Attributed mostly to warming surface waters, which is happening at a rate of 1 per cent every year, this creates many layers in the ocean waters, preventing deep ocean nutrients from rising to the surface and feeding plant life.

Continue reading »

Tags: , , , , , , , , , , , , ,