NEWS--Researchers have reconstructed atmospheric carbon dioxide levels over the past 2.1 million years in the sharpest detail yet, shedding new light on its role in the earth's cycles of cooling and warming. A first-ever analysis and comparison of the carbon footprints of different countries using a single, trade-linked model has been created by researchers at the Norwegian University of Science and Technology (NTNU) and the Centre of International Climate and Environment Research - Oslo (CICERO). ScienceDaily (June 22, 2009) — Some of the substances that are helping to avert the destruction of the ozone layer could increasingly contribute to climate warming, according to scientists from NOAA's Earth System Research Laboratory and their colleagues in a new study in the journal Proceedings of the National Academy of Sciences.

Tsunami

Natural Disasters - Tsunami

A tsunami is a massive wave of water which rolls into the shore area with a height of 15m +. An example of an earthquake-caused Tsunami is the 2004 Indian Ocean Earthquake. An example of a landslide-caused Tsunami is the Lituya Bay, Alaska tsunami.

Tsunami's are caused by displacement of large masses of water such as an underwater earthquake, volcanic eruption, landslide, or meteorite impact; most common being the earthquake.

Tsunami's are caused when the sea floor deforms and vertically displaces the water on top.

A tsunami is not a normal wave but much bigger. It looks more like an endlessly onrushing tide that forces it way around the obstacle.

They are much more dangerous than big waves because they contain immense energy and propagate at high speeds.

Example:

The highest Tsunami was 85m on April 24th, 1771, Japan.
The 2004 Indian Ocean Earthquake ranks as the deadliest tsunami in recorded history.

The tsunami that struck Malé in the Maldives on December 26, 2004.

Schema of a tsunami

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NEWS--Researchers have reconstructed atmospheric carbon dioxide levels over the past 2.1 million years in the sharpest detail yet, shedding new light on its role in the earth's cycles of cooling and warming. A first-ever analysis and comparison of the carbon footprints of different countries using a single, trade-linked model has been created by researchers at the Norwegian University of Science and Technology (NTNU) and the Centre of International Climate and Environment Research - Oslo (CICERO). ScienceDaily (June 22, 2009) — Some of the substances that are helping to avert the destruction of the ozone layer could increasingly contribute to climate warming, according to scientists from NOAA's Earth System Research Laboratory and their colleagues in a new study in the journal Proceedings of the National Academy of Sciences.