Antarctic Craters Reveal Strike

BBC ^ | 8-23-2004

[blam]

Antarctic craters reveal strike

The asteroid may have raised sea levels by up to 60cm

Scientists have mapped enormous impact craters hidden under the Antarctic ice sheet using satellite technology. The craters may have either come from an asteroid between 5 and 11km across that broke up in the atmosphere, a swarm of comets or comet fragments.

The space impacts created multiple craters over an area of 2,092km (1,300 miles) by 3,862km (2,400 miles).

The scientists told a conference this week that the impacts occurred roughly 780,000 years ago during an ice age.

When the impacts hit, they would have melted through the ice and through the crust below.

Professor Frans van der Hoeven, from Delft University in the Netherlands, told the International Geographical Union Congress in Glasgow that the biggest single strike seared a hole in the ice sheet roughly 322km (200 miles) by 322km.

Impact melt

This would have melted about 1% of the ice sheet, raising water levels worldwide by 60cm (2ft).

The research suggests that an asteroid the size of the one blamed for killing off the dinosaurs 65 million years ago could have struck Earth relatively recently.

Early humans would have been living in Africa and other parts of the Old World at the time of the strikes.

But the impacts would have occurred during an ice age, so even tidal waves would have been weakened by the stabilising effect of icebergs on the ocean.

The craters were resolved using satellite data to map gravity anomalies under the ice sheet.

[blam]

GGG Ping.

[Slings and Arrows]

The asteroid may have raised sea levels by up to 60cm

It's Bush's fault!

[Izzy Dunne]

We need more money to build the Antarctic Asteroid Deflection System.

NOW!

[HawkeyeLonewolf]

Blah blah blah blah blah...

Since the earth is only about 10,000 years old, I love these liberal dating methods claimed as "fact"

[bert]

The impact area is still emitting ions that are captured by atmospheric ozone molecules thus the hole in the ozone layer.

The emission rate is variable and the reason has not yet determined. The best way to measure the emission variation is to measure the ozone hole.

[aruanan]

When the impacts hit, they would have melted through the ice and through the crust below.

The sorry state of journalism.

[aruanan]

Since the earth is only about 10,000 years old, I love these liberal dating methods claimed as "fact"

For whichever reason you're saying this: poor child.

[Modernman]

Since the earth is only about 10,000 years old, I love these liberal dating methods claimed as "fact"

You're wrong. The earth isn't 10,000 years old. It was created last Thursday and all the evidence to the contrary is just a practical joke by the Creator.

[HawkeyeLonewolf]

For whichever reason you're saying this: poor child.

Just going with science, not the fanciful belief systems of Anti-God pseudo-scientists.

[HawkeyeLonewolf]

http://answersingenesis.org/home/area/faq/young.asp

[Darksheare]

Too bad they don't have a map of the crater to show, I'd like to see it.

[HawkeyeLonewolf]

And for Ice Age education...

http://answersingenesis.org/home/area/faq/iceage.asp

[Ol' Sox]

...even tidal waves would have been weakened by the stabilising effect of icebergs on the ocean.

I had no idea that icebergs had a stabilizing effect on the ocean. I don't believe it.

[Modernman]

Ah, Answers in Genesis. How many times do we have to discredit that site before you creos stop relying on it as an authority?

Anyway, I'm still sticking by my belief that the Earth was created last Thursday. It's no whackier than your view.

[Gorjus]

I had no idea that icebergs had a stabilizing effect on the ocean. I don't believe it.

Remember, this is about damping out waves. When the wave hits the iceberg, part of it reflects directly, and part of the energy is consumed lifting the iceberg which - when it comes back down - creates more waves headed back in the reverse direction. Net effect: The original incident wave is diminished. Do it enough times (like, in an ice ace when there are lots of icebergs) and a single massive wave becomes a lesser wave and lots of return waves.

If there's enough ice to make a solid ice sheet on the water, then even more energy is consumed breaking that ice sheet to lift the ice as the wave passes.

How significant it would be overall is unclear, but the incremental effect is not hard to understand.

[HawkeyeLonewolf]

What have you disproven from their site? So far, good honest science wins out.

[Lockbar]

I guess fluffy snow softened the blow.

[camas]

who knows how long a year was in the beginning???

[Modernman]

What have you disproven from their site? So far, good honest science wins out.

That site has been hashed out on literally dozens of FR threads. It really has no credibility here, not even with most creationists.

[HawkeyeLonewolf]

TO each his own. I'll stick with the truth of God's word.

[HawkeyeLonewolf]

Since we're told creation was six, literal, 24-hour days by God in His word. I'll stick with that.

[null and void]

This impactor was in the same size class as the one that wiped out the dinosaurs.

Yet it didn't cause a major extinction event.

IMHO this is because the Chixulub impact was on shallow water. Imagine a 60 mile wide white hot crater with sea water pouring in from all sides! It's a recipe for steam cleaming a large portion of a planet...

[Redleg Duke]

I have read Genesis and nowhere did I read about 24 hours in a day or even God punching a timeclock!

I'll leave God's definition of days to Him. When you are eternal, hours probably get a little bit longer.

[null and void]

You do that.

[HawkeyeLonewolf]

"So the evening and the morning were the first day."

The word used for DAY (yom) only ever means a literal 24 hour period. Every other place it's used to mean a literal day, no one ever questions.

They only question it in Genesis because they are trying to change God's word to fit the THEORIES of anti-God "scientists". Yet the evidence fits a literal six-day creation.

These people are like John Kerry, flip-flopping whenever it suits them.

And when You're eternal, an hour is still an hour. It's not relative. Although time has no meaning to an eternal God, the term still has meaning.

[null and void]

Fire and ice ping

[Go_Raiders]

The entire universe was created at the instant you read the period at the end of this sentence.

You have been implanted with "memories" that make it seem like you and the rest of the universe existed before this time.

Just kidding, the universe will not be created until the next time you blink your eyes! < ;o{}

[camas]

isn't a day from sun up to the next sun up. sun up to sun up depends on the rotation speed of the object.

[HuntsvilleTxVeteran]

You are wrong, the world started the day I was born:)

[Modernman]

They only question it in Genesis because they are trying to change God's word to fit the THEORIES of anti-God "scientists". Yet the evidence fits a literal six-day creation.

You seem to assume that scientists working in geology, astronomy etc. are "anti-God." Do you have any basis for this claim?

If the Earth was created around 10,000 years ago, why would God place all this misleading evidence in the geological record that suggests a much older Earth?

And when You're eternal, an hour is still an hour. It's not relative. Although time has no meaning to an eternal God, the term still has meaning.

Time is relative. An hour for someone traveling at the speed of light is different from an hour for you and me.

[Modernman]

Bah, you're all just figments of my imagination and I'm just a brain in a jar.

[Redleg Duke]

"And when You're eternal, an hour is still an hour. It's not relative."

Have you directed God about this?

[ninenot]

You forgot your /sarcasm tag.

[HuntsvilleTxVeteran]

No a day is the time it takes for the sun to revolve around the earth:)

[jpsb]

Or maybe the Chixulub event did not wipe out the dinosaurs. This event is alledged to be bigger and yet did no or little damage on a plantary scale? hmmmm, something does not cumpute.

[null and void]

There is some indication that it triggered a major volcanic event - the centuries long basaltic flow that created the Deccan traps - enough lava flowed to pretty much cover India to a depth of a mile.

Lots of ash, dust, CO₂ and sulfur dumped into the atmosphere. Major global warming and acid rain...

[null and void]

Also a "dry" vs "wet" strike. No planetary steam cleaning.

[lepton]

Since we're told creation was six, literal, 24-hour days by God in His word.

Where exactly does it say that? One can infer such a thing, but I am quite certain that it says no such thing. ...And was that a Solar day, or a Sidereal day?

[null and void]

Speaking of meteors...

Asteroid Shaves Past Earth's Atmosphere

[balrog666]

Shiva Danced the Universe into Being!

[camas]

thanks, i had forgotten that.

[Publius6961]

Aren't these reports/discussions usually accompanied by maps? Where are the maps?
How does this tie in with the huge "lake" several thousand feet below the ice surface?

[Doctor Stochastic]

Bah, you're all just figments of my imagination and I'm just a brain in a jar.

OK, Donovan, how did you get Nancy to agree to be in your movie?

[Doctor Stochastic]

Any evidence of another iridium layer? Perhaps the impact wasn't as effusive.

[RightWhale]

Blah blah blah blah blah...

Hadn't though of that excellent argument.

[RightWhale]

This is interesting. Maybe for the next one we will have the technology in place to capture the asteroid and mine it and run the L-5 Society program.

[Doctor Stochastic]

Note the error in the first sentence of the Enoch Calendar.

[Alas Babylon!]

Year Zero?

[balrog666]

Note the error in the first sentence of the Enoch Calendar.

Nobody said they knew how to count either.