TSUNAMI: March 11 tsunami produced Antarctic icebergs - Scientists!

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http://news.blogs.cnn.com / August 9th, 2011 / 09:40 AM ET.

Top image shows the Sulzberger Ice Shelf on March 12 and the bottom on March 16 after the tsunami broke off icebergs.

The tsunami spawned from the March 11 earthquake off eastern Japan broke up parts of an Antarctic ice shelf that hadn't moved in 46 years, scientists say.

Though the tsunami waves were only about a foot high when they reached Antarctica, their consistency was enough to crack the 260-foot-thick ice and split off icebergs with combined surface areas more than twice the size of Manhattan from the Sulzberger Ice Shelf, the scientists report in a NASA statement.

It was the first time scientists have been able to tie icebergs directly to a tsunami, according to NASA.

The tsunami waves traveled 8,000 miles and took 18 hours to reach the ice shelf, the scientists said, giving them time to validate theories on how an earthquake can affect geography a hemisphere away.

Full Story at,

http://news.blogs.cnn.com/2011/08/09/scientists-march-11-tsunami-produced-antarctic-icebergs/?hpt=hp_t2

COMPACT FLUORESCENT LIGHTS: Broken CFLs can be unsafe!

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• July 7, 2011 
• IANS 
• Washington / DC

A broken compact fluorescent light (CFL) bulb can be unsafe for human beings because it releases mercury vapour into the air for weeks, even months.

The amount of liquid mercury (Hg) that leaches from a broken CFL is lower than the level allowed by the US Environmental Protection Agency (EPA), so they are not considered hazardous.

However, Yadong Li and Li Jin of Jackson State University report that the total amount of liquid mercury vapour released from a broken CFL over time can exceed the amount considered safe for human exposure, reports the journal Environmental Engineering Science.

The best method of disposal is to pack the broken CFL in an airtight sachet or box and hand over to the competent recycler of CFLs.

Full Story at,

http://www.deccanchronicle.com/channels/sci-tech/gadgets/broken-cfls-can-be-unsafe-331