And, there’s a video…
The bigger the earthquake, the louder it rings. And the magnitude 9.0 quake that struck just off the coast of Japan on March 11, 2011 was very big, indeed.
Scientific instruments like seismometers are sensitive enough to pick up seismic waves from distant earthquakes, even on their second or third trip around the planet. (Satellites have even detected the accompanying atmospheric waves.) It doesn’t always take super-precise measurements to know something is happening, however. A groundwater monitoring well in Virginia made the passage of seismic waves from the 2011 Tohoku earthquake quite clear in the form of a rapid two foot rise in water level.
While the tsunami that accompanied the earthquake in Japan was devastating, waves of a very different sort were spawned far away—in the fjords of Norway. A number of witnesses noticed the strange waves, occurring as they did on a calm morning when the fjord waters were otherwise smooth. As some managed to capture on video…
I’m so surprised by the depth of research and overall usefulness of the How Stuff Works website. This post on the North Pole covers how to prepare for an Arctic Expedition. It included this nice nugget:
From the 15th through the 20th century, the Doctrine of Discovery was recognized by European and American explorers as the go-to guideline for ownership of territory. The doctrine uses a basic “first-come, first-served” rule — a region belongs to whatever country got there first. Remember how the United States “won” the race to the moon in 1969 by planting a flag on the lunar surface?
Today, the United Nations has taken control of the issue. According to the U.N. Convention on the Laws of the Sea, claims to the North Pole are based on a country’s continental shelf (undersea extensions of land).
In 2007, Russian mini-submarines — on a mission to explore natural gas and oil deposits under the North Pole — planted Russian flags below the Arctic ice. The Canadians were not pleased, mostly because they claim that the North Pole is theirs. So do Denmark (via Greenland), Norway and the United States.