Category Archives: earth

Images of Eath Distorted by Earthquakes

Earthquakes are often imagined as opening up large gaps in the land, sinking islands and the such. It is much harder in real life to see this change. NASA has recently released the first ever airborne radar images of the … Continue reading →

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Polar Regions

The polar regions are the areas that surround Earth’s geographic North and South Poles. The area surrounding the North Pole is called the Arctic and includes almost the entire Arctic Ocean and northern areas of Europe, Asia and North America. … Continue reading →

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Salinity in Oceans

Salinity is the saltiness or dissolved salt content of a body of water. It is a general term used to describe the levels of different salts such as sodium chloride, magnesium and calcium sulfates, and bicarbonates. Among the various physical … Continue reading →

Posted in earth, oceans, water | 3 Comments

Earth’s Mantle in Overdrive Under Alaska

A new 3-D model of the mega-quake and tsunami-launching subduction zone in Alaska has uncovered a big surprise: The Earth’s mantle there is moving a whopping 20 to 30 times faster than the crust. So instead of being dragged along … Continue reading →

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