Saturday, March 19, 2011

Super Moon Tonight 3/19/11


Excerpt from NASA website:
On March 19th, a full Moon of rare size and beauty will rise in the east at sunset. It's a super "perigee moon"--the biggest in almost 20 years.

"The last full Moon so big and close to Earth occurred in March of 1993," says Geoff Chester of the US Naval Observatory in Washington DC. "I'd say it's worth a look."

Full Moons vary in size because of the oval shape of the Moon's orbit. It is an ellipse with one side (perigee) about 50,000 km closer to Earth than the other (apogee): diagram. Nearby perigee moons are about 14% bigger and 30% brighter than lesser moons that occur on the apogee side of the Moon's orbit.

Read more here.

Saturday, March 12, 2011

Earthquake Moves Japan's Coast 8 feet; Tsunami; Radioactivity

Below is some information about the powerful earthquake on Friday, March 11, 2011 that struck Japan and sent tsunamis all the way to the northern US coast.  The quake struck at 2:46 pm local time (12:46 am ET).  The death toll may rise to over 1,000 -- and there are signs of radioactivity near Japanese nuclear power plants as the plants struggle to control the temperature of radioactive material.

CNN reports: The powerful earthquake that unleashed a devastating tsunami Friday appears to have moved the main island of Japan by 8 feet (2.4 meters) and shifted the Earth on its axis.

Read more here:
http://edition.cnn.com/2011/WORLD/asiapcf/03/12/japan.earthquake.tsunami.earth/index.html?iref=NS1
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Timeline:

  • 12:46 am ET: Quake strikes, sending tsunami and 30-foot wall of water across Japan.  
  • 8:07 am ET: Less than 8 hours later, the tsunami struck Hawaii almost 4,000 miles away with 7-foot waves / swells.  
  • Afternoon, ET: Tsunami brings 8-foot waves to northern California, about 2,400 miles from Hawaii.  



CNN reports: The tsunami struck the Hawaiian Islands shortly after 3:07 a.m. Friday (8:07 a.m. ET) -- less than eight hours after the magnitude 8.9 earthquake struck off Japan, where nearly 300 people had been reported killed by early Saturday. The Hawaiian capital Honolulu is nearly 3,800 miles (6,100 km) from the epicenter of Friday's quake.
It brought six-foot waves to Maui, where harbors remained closed Friday night, and brought 8.1-foot waves to Crescent City, California...

Read more here:
http://edition.cnn.com/2011/WORLD/asiapcf/03/11/japan.quake/index.html?iref=NS1

http://edition.cnn.com/2011/US/03/11/tsunami/index.html?hpt=T2