Thursday, July 20, 2017

Eclipse traffic

Oregon Dept of Transportation says traffic could be congested in Oregon for up to a week, on I5, the major north-south route here.

Glad I live right under the path of totality. My sister and her family in Portland are coming down, a day early. Sleeping in the back yard.

http://www.oregonlive.com/eclipse/2017/07/beware_this_oregon_solar_eclip.html#incart_push

Some Pictures from the Oregon Coast

Just south of Yachats:





Wednesday, July 12, 2017

Giant Iceberg Nearly The Size Of Delaware Breaks Off Antartica

The White Whale:

http://www.huffingtonpost.com/entry/larsen-iceberg_us_59660d73e4b03f144e2f53b2

Here's the report from the MIDAS Project.

They say it will be named "A68" -- I saw on Twitter that some were suggesting it be named the #ExxonKnew -- and weighs over a trillion tonnes. That's about how much ice the planet has been losing per year for a few years now.

In the picture to the right, I'm guessing that's sea ice to the outer edge of the breakoff, which this iceberg will begin pushing through.

The Larsen C ice shelf is, suddenly, 12% smaller, and, "potentially less stable," says MIDAS. "This is the furthest back that the ice front has been in recorded history," says a MIDAS scientist. Another said, interestingly:
“We have been anticipating this event for months, and have been surprised how long it took for the rift to break through the final few kilometres of ice."
Mind, it did break off in the depth of the dark, Antarctic winter, but I'm sure he took that into account.

Friday, July 07, 2017

Larsen C, Almost Free

When last we looked, the Larsen C ice shelf was hanging on by an 8-mile sliver.

That's now down to 3 miles.

In the spirit of Layjez's calculation in the comments, that's 5 miles in about 36 days, or 1/7th of a mile per day. That's an average of only 0.2 meters per minute, compared to his (earlier) value of about 3 m/min.

So clearly this isn't linear, or easy to predict. The Antarctic is just coming out of its winter depth, which you'd think might have helped the crack to heal. But nature has other ideas.

At least this won't kill any penguins. That'd be a hell of a way to die.