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Major Climate Change Occurred 5,200 Years Ago: Evidence Suggests That History Could Repeat Itself
Space and Earth Science News ^ | December 16, 2004

Posted on 12/17/2004 10:57:17 PM PST by snarks_when_bored

 

Major Climate Change Occurred 5,200 Years Ago: Evidence Suggests That History Could Repeat Itself

December 16, 2004
Glaciologist Lonnie Thompson worries that he may have found clues that show history repeating itself, and if he is right, the result could have important implications to modern society.


Thompson has spent his career trekking to the far corners of the world to find remote ice fields and then bring back cores drilled from their centers. Within those cores are the records of ancient climate from across the globe.

From the mountains of data drawn by analyzing countless ice cores, and a meticulous review of sometimes obscure historic records, Thompson and his research team at Ohio State University are convinced that the global climate has changed dramatically.

But more importantly, they believe it has happened at least once before, and the results were nearly catastrophic to emerging cultures at the time. He outlined his interpretations and fears today at the annual meeting of the American Geophysical Union in San Francisco.

A professor of geological sciences at Ohio State and a researcher with the Byrd Polar Research Center, Thompson points to markers in numerous records suggesting that the climate was altered suddenly some 5,200 years ago with severe impacts.

He points to perfectly preserved plants he discovered that recently emerged from the Quelccaya ice cap in the Peruvian Andes as that glacier retreats. This monstrous glacier, some 551 feet (168 meters) deep, has shown an exponentially increasing rate of retreat since his first observations in 1963.

The plants were carbon-dated to determine their age and tests indicated they had been buried by the ice for perhaps 5,200 years. That suggests that somehow, the climate had shifted suddenly and severely to capture the plants and preserve them until now.



In 1991, hikers found the preserved body of a man trapped in an Alpine glacier and freed as it retreated. Later tests showed that the human – dubbed Oetzi – became trapped and died around 5,200 years ago.

Thompson points to a study of tree rings from Ireland and England that span a period of 7,000 years. The point in that record when the tree rings were narrowest – suggesting the driest period experienced by the trees – was approximately 5,200 years ago.

He points to ice core records showing the ratio of two oxygen isotopes retrieved from the ice fields atop Africa’s Mount Kilimanjaro. A proxy for atmospheric temperature at the time snow fell, the records are at their lowest 5,200 years before now.

He lists the shift by the Sahara Desert from a habitable region to a barren desert; major changes in plant pollen uncovered from lakebed cores in South America, and the record lowest levels of methane retrieved from ice cores from Greenland and Antarctica and all occurred at the same time – 5,200 years ago.

“Something happened back at this time and it was monumental,” Thompson said. “But it didn’t seem monumental to humans then because there were only approximately 250 million people occupying the planet, compared to the 6.4 billion we now have.

“The evidence clearly points back to this point in history and to some event that occurred. It also points to similar changes occurring in today’s climate as well,” he said.

“To me, these are things we really need to be concerned about.”
The impact of a climate change of that magnitude on a modern world would be tremendous, he said. Seventy percent of the population lives in the world’s tropics and major climate changes would directly impact most of them.

Thompson believes that the 5,200-year old event may have been caused by a dramatic fluctuation in solar energy reaching the earth. Scientists know that a historic global cooling called the Little Ice Age, from 1450 to 1850 A.D., coincided with two periods of decreased solar activity.



Evidence shows that around 5,200 years ago, solar output first dropped precipitously and then surged over a short period. It is this huge solar energy oscillation that Thompson believes may have triggered the climate change he sees in all those records.

“The climate system is remarkably sensitive to natural variability,” he said. “It’s likely that it is equally sensitive to effects brought on by human activity, changes like increased greenhouse gases, altered land-use policies and fossil-fuel dependence.

“Any prudent person would agree that we don’t yet understand the complexities with the climate system and, since we don’t, we should be extremely cautious in how much we ‘tweak’ the system,” he said.

“The evidence is clear that a major climate change is underway.”

Source: Ohio State University



TOPICS: Science; Society
KEYWORDS: 5200yearsago; archaeology; blacksea; blackseaflood; climatechange; climatehistory; ggg; glaciers; godsgravesglyphs; grandcanyon; greatflood; history; noah; noahsflood; oetzitheiceman; solaroutputvariation; suv; suvs; unusualconditions
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It appears that 5,200 years ago, something fairly catastrophic happened to Earth, but we don't know for sure what it was. Glaciologist Thompson suggests that it was a drastic drop in solar output followed by a surge in that output. He finds a modern analogy in the 'little ice age' lasting from 1450 A.D. to 1850 A.D. followed by our perceived recent global warming. But, of course, it's not clear that he's correct.

More data and better models, please!

1 posted on 12/17/2004 10:57:19 PM PST by snarks_when_bored
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To: snarks_when_bored; Columbus Dawg

Source: Ohio State University




yeah buddy!!!!


2 posted on 12/17/2004 10:59:10 PM PST by MikefromOhio (23 days until I can leave Iraq and stop selling hotdogs in Baghdad....and boycotting boycotts)
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To: MikeinIraq

I don't know what you're doing in Iraq, but get out of there safely, bud.


3 posted on 12/17/2004 11:01:13 PM PST by snarks_when_bored
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To: snarks_when_bored

Thanks,

I am an IT contractor out of CENTCOM.


4 posted on 12/17/2004 11:04:54 PM PST by MikefromOhio (23 days until I can leave Iraq and stop selling hotdogs in Baghdad....and boycotting boycotts)
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To: snarks_when_bored
I must be nuts. I found myself cheering evidence coming in if knocks the self-satisfied smirks off the faces of the global warming idiots. I felt glad that it would soon be obvious to all that far, far more telling than the changes from human causes are the ones from natural causes. But if the coming changes are catastrophic, it hardly seems appropriate to be celebrating these finds.
5 posted on 12/17/2004 11:07:40 PM PST by NutCrackerBoy
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To: MikeinIraq

Gotcha. Absolutely best regards and grateful thanks!


6 posted on 12/17/2004 11:08:27 PM PST by snarks_when_bored
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To: snarks_when_bored

no problem...

23 days to go....


7 posted on 12/17/2004 11:11:06 PM PST by MikefromOhio (23 days until I can leave Iraq and stop selling hotdogs in Baghdad....and boycotting boycotts)
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To: NutCrackerBoy
Right...a schadenfreude moment. It seems pretty clear that the climate is acting up a bit, but we're way, way off from being able to say that humans did it. And Thompson's work certainly suggests that humans didn't do it, at least not all of it and probably not much of it. We'll see, I'm sure.
8 posted on 12/17/2004 11:11:51 PM PST by snarks_when_bored
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To: snarks_when_bored

Excellent article and still another that puts the lie to man-caused global warming. so much for the kyoto "make america a 3rd world country" accord, huh?


9 posted on 12/17/2004 11:12:20 PM PST by dzzrtrock ("A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud)
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To: dzzrtrock
"But we didn't sign the Kyoto Treaty, so Bin Laden attacked us and the rest of the world hates us."

Ah, the simple life.

10 posted on 12/17/2004 11:16:36 PM PST by snarks_when_bored
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To: snarks_when_bored; farmfriend
Glaciologist Thompson suggests that it was a drastic drop in solar output followed by a surge in that output.

Well, that is a change coming from a Glaciologist...no contracts with NASA I would guess.

11 posted on 12/17/2004 11:37:38 PM PST by Ernest_at_the_Beach (A Proud member of Free Republic ~~The New Face of the Fourth Estate since 1996.)
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To: snarks_when_bored; abbi_normal_2; Ace2U; adam_az; Alamo-Girl; Alas; alfons; alphadog; amom; ...
Rights, farms, environment ping.
Let me know if you wish to be added or removed from this list.
I don't get offended if you want to be removed.
12 posted on 12/17/2004 11:45:22 PM PST by farmfriend ( Congratulation. You are everything we've come to expect from years of government training.)
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To: Ernest_at_the_Beach
Contracts? What contracts? He don't need no steenking contracts!

(It's late.)

13 posted on 12/17/2004 11:48:13 PM PST by snarks_when_bored
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To: farmfriend
Hey I just mentioned your name over here and did an attempt to explain what a ping list was:

Anti-American and anti-Israel bias on CBC

Seems to be a frequently reoccurring question.

14 posted on 12/18/2004 12:09:17 AM PST by Ernest_at_the_Beach (A Proud member of Free Republic ~~The New Face of the Fourth Estate since 1996.)
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Comment #15 Removed by Moderator

To: Culture_Values_Morality

"What, me worry?"


16 posted on 12/18/2004 12:20:22 AM PST by snarks_when_bored
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To: MikeinIraq

http://researchnews.osu.edu/archive/quelplant.htm

It is one of the three cover stories on The Ohio State University web site.
www.osu.edu


17 posted on 12/18/2004 1:14:26 AM PST by Columbus Dawg (Buckeye Country is Bush Country)
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To: snarks_when_bored
Seventy percent of the population lives in the world’s tropics and major climate changes would directly impact most of them.

Flatly untrue. The true number is hard to come by, but is certainly less than 1/3 and is probably below 1/4. After all, China, India, Europe and the US are all entirely or almost entirely outside the tropics.

18 posted on 12/18/2004 2:17:58 AM PST by Restorer (Europe is heavily armed, but only with envy.)
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To: snarks_when_bored
The Bible suggests 4450 years ago (based on 6000 years of biblical time-line).


19 posted on 12/18/2004 2:51:53 AM PST by DirtyHarryY2K (Perversion is not a civil right.)
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To: farmfriend

BTTT!!!!!!


20 posted on 12/18/2004 3:01:27 AM PST by E.G.C.
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To: snarks_when_bored

3200 BC is usually marked as the start of the bronze age.

So, clearly, the climatic changes were man made.


21 posted on 12/18/2004 3:23:57 AM PST by Lokibob (All typos and spelling errors are mine and copyrighted!!!!)
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To: snarks_when_bored

You want to look at some hard data, Stanford has some on line here:
http://www.stanford.edu/~meehan/donnellyr/paleo.html


22 posted on 12/18/2004 3:33:52 AM PST by Lokibob (All typos and spelling errors are mine and copyrighted!!!!)
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To: Lokibob
So, clearly, the climatic changes were man made. So clearly?!?!!? Mind explaining this clear as mud finding 3200BC marked by the start of the Bronze Age? This is in light of today's understanding or lack of understanding of statistical variability now and then. Kinda weak correlation don't you think?
23 posted on 12/18/2004 5:30:54 AM PST by SIRTRIS
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To: SIRTRIS

Do all sarcastic remarks have to contain sarcastic tags?

Lighten up!!!!


24 posted on 12/18/2004 6:57:08 AM PST by Lokibob (All typos and spelling errors are mine and copyrighted!!!!)
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To: snarks_when_bored; farmfriend; Dog Gone; Carry_Okie
"But more importantly, they believe it has happened at least once before, and the results were nearly catastrophic to emerging cultures at the time."

Kinda reminds me of this data and model...

"In the six hundredth year of Noah's life, in the second month, the same day were all the fountains of the great deep broken up, and the windows of heaven were opened." Genesis 7:11

Something drastic happened then that changed the lifespans drastically and suddenly from Noah's 600+ years, down to Abraham's 120, or so. Something must have changed in the "firmament," also known as the "heavens" in those days... The timing would have been about 5200 years ago, as well!!!

25 posted on 12/18/2004 8:32:24 AM PST by SierraWasp (Ronald Reagan was an exceptional "celebrity!" Jesse Ventura & Arnold Schwarzenrenegger are NOT!!!)
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To: snarks_when_bored
It appears that 5,200 years ago, something fairly catastrophic happened to Earth...

We will survive this one too.

5.56mm

26 posted on 12/18/2004 8:35:14 AM PST by M Kehoe
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To: Restorer
"Flatly untrue."

Good catch!!!

27 posted on 12/18/2004 8:52:09 AM PST by SierraWasp (Ronald Reagan was an exceptional "celebrity!" Jesse Ventura & Arnold Schwarzenrenegger are NOT!!!)
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To: DirtyHarryY2K

Oh brother! I hadn't quite gotten to your #19 when I posted my number 25!! Great minds run in the same groove!!!


28 posted on 12/18/2004 8:55:11 AM PST by SierraWasp (Ronald Reagan was an exceptional "celebrity!" Jesse Ventura & Arnold Schwarzenrenegger are NOT!!!)
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To: Ernest_at_the_Beach
Seems to be a frequently reoccurring question.

Yes. I think links to certain informational pages should be put on the front page or accessed somehow. Not my call though.

29 posted on 12/18/2004 10:33:17 AM PST by farmfriend ( Congratulation. You are everything we've come to expect from years of government training.)
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To: SierraWasp

Yep, Seems their iceman is about the same age as Noah. I'm not sure about the time line though, because I don't know exactly how many years from Noah to Christ.


30 posted on 12/18/2004 11:38:59 AM PST by DirtyHarryY2K (Perversion is not a civil right.)
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To: blam; FairOpinion; Ernest_at_the_Beach; SunkenCiv; 24Karet; 3AngelaD; 4ConservativeJustices; ...
There isn't much to worry about, and, hey, what's that rumbling noise?
Please FREEPMAIL me if you want on, off, or alter the "Gods, Graves, Glyphs" PING list --
Archaeology/Anthropology/Ancient Cultures/Artifacts/Antiquities, etc.
The GGG Digest
-- Gods, Graves, Glyphs (alpha order)

31 posted on 12/18/2004 2:58:51 PM PST by SunkenCiv ("All I have seen teaches me trust the Creator for all I have not seen." -- Emerson)
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To: DirtyHarryY2K
"Yep, Seems their iceman is about the same age as Noah. I'm not sure about the time line though, because I don't know exactly how many years from Noah to Christ."

If the Black Sea flood was Noah's, it was in 5,600BC.

32 posted on 12/18/2004 3:18:56 PM PST by blam
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To: Lokibob
I've been away from my computer, so a belated thanks for that link to the Stanford site. I was very intrigued by the roughly contemporaneous events cited by Thompson, and your link is right on topic.

As for those events having been caused by the onset of the Bronze Age (per your post #21), what could be clearer?

Nature, good; humans, bad. Bad humans...bad, bad humans!


33 posted on 12/18/2004 3:31:02 PM PST by snarks_when_bored
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To: SierraWasp

If you could suggest a mechanism whereby some sort of climate catastrophe caused human lifespans to shrink (virtually overnight, in geological terms) from 600+ years to 70+ years, I'd be interested in hearing it.


34 posted on 12/18/2004 3:41:36 PM PST by snarks_when_bored
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To: M Kehoe
We will survive this one too.

That's what I'd bet on (said just before glancing up and noticing a fireball expanding to fill the entire sky from horizon to horiz

35 posted on 12/18/2004 3:45:17 PM PST by snarks_when_bored
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To: snarks_when_bored

Seems this guy collected data from many different places that had the same results. Also, his time date is about the time that history pertaining to man started. All of this fits into a time frame of 500 years or so. He could be right.

The question is how quick did it take to get cold and how long did it take to get warm and of course which is the norm. The cold or the warm.

When North America was settled by the Europeans we had horrible Winters. It would snow waist deep in Virginia and so on. Prior to that, the Vikings could plant crops in places like Greenland. It is clear there can be drastic climate changes but the question is what brings them on. Meteors strikes would be my best guess. What we do to the climate with man induced events are like trying to bail the ocean out with a bucket.

I don't personally think we can prevent something like this from happening except maybe locally in a city or something. What we have to do is make plans to survive something like this and carry on with our lives.


36 posted on 12/18/2004 3:50:59 PM PST by U S Army EOD (John Kerry, the mother of all flip floppers.I)
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To: NutCrackerBoy

I look forward to emigrating to Antarctica, and developing a ranch/farm complex. Maybe use glacial melt water to irrigate it, and on the side, sell bottled "pure glacier water" to the poor, deluded eviro-schmucks who stayed in the Pacific Northwest Desert, protecting the dead snags of the former rainforest from "exploitation".


37 posted on 12/18/2004 4:04:48 PM PST by ApplegateRanch (The world needs more horses, and fewer Jackasses!)
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To: snarks_when_bored

If what happened 5200 years ago also happened 5200 years before that, I would take the pattern to heart. At present we have speculation.


38 posted on 12/18/2004 5:17:34 PM PST by -=Wing_0_Walker=-
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To: Molly Pitcher; TooBusy

missed you on the GGG ping.


39 posted on 12/18/2004 7:06:26 PM PST by SunkenCiv ("All I have seen teaches me trust the Creator for all I have not seen." -- Emerson)
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To: snarks_when_bored; SierraWasp
If you could suggest a mechanism whereby some sort of climate catastrophe caused human lifespans to shrink (virtually overnight, in geological terms) from 600+ years to 70+ years, I'd be interested in hearing it.

Simple, earth lost its warp drive. The earth, due to the flood, couldn't get dilithiium crystals which had us zippin around the sun in about two months or so?

FGS

40 posted on 12/18/2004 8:21:09 PM PST by ForGod'sSake (ABCNNBCBS: An enemy at the gates is less formidable, for he is known and carries his banner openly.)
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To: ForGod'sSake

Once something's explained, the explanation seems so obvious!


41 posted on 12/18/2004 8:26:12 PM PST by snarks_when_bored
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To: M Kehoe; All
BTW, that fireball thing mentioned in my post #35? False alarm. It turned out to have been nothing more than an area rug that had been soaked in gasoline, torched and then tossed off an upstairs neighbor's balcony.

Kids these days, huh? No biggie.

42 posted on 12/18/2004 8:35:27 PM PST by snarks_when_bored
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To: U S Army EOD

I agree with pretty much everything you wrote. Good points.


43 posted on 12/18/2004 8:42:22 PM PST by snarks_when_bored
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To: snarks_when_bored

Was one of the neighbor's kids wrapped up in it????


44 posted on 12/18/2004 8:45:12 PM PST by U S Army EOD (John Kerry, the mother of all flip floppers.I)
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To: U S Army EOD
I should have been so lucky!*

 

 

 

*I keed! I keed! No need to get the Mods involved...this time.

45 posted on 12/18/2004 8:53:05 PM PST by snarks_when_bored
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To: snarks_when_bored
Once something's explained, the explanation seems so obvious!

Indeed. ;^)

FGS

46 posted on 12/18/2004 9:14:30 PM PST by ForGod'sSake (ABCNNBCBS: An enemy at the gates is less formidable, for he is known and carries his banner openly.)
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Just updating the GGG information, not sending a general distribution.

To all -- please ping me to other topics which are appropriate for the GGG list. Thanks.
Please FREEPMAIL me if you want on or off the
Gods, Graves, Glyphs PING list or GGG weekly digest
-- Archaeology/Anthropology/Ancient Cultures/Artifacts/Antiquities, etc.
Gods, Graves, Glyphs (alpha order)

47 posted on 06/10/2006 6:57:38 PM PDT by SunkenCiv (All Moslems everywhere advocate murder, including mass murder, and they do it all the time.)
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Catastrophism

48 posted on 06/10/2006 6:57:57 PM PDT by SunkenCiv (All Moslems everywhere advocate murder, including mass murder, and they do it all the time.)
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To: snarks_when_bored

The theory mentioned runs along the lines of:

All the earth’s water was at one time in vapor form. The earth was surrounded by thick fog clouds, which subsequently blocked most UAB rays, making cancer virtually nonexistant.

Since we had virtually no exposure to oxidizing radiation, man was very healthy as a species and lived very long lives. Probably grew much bigger as well, giving rise to the giant races, found in the bible and elsewhere in mythology.

Consequently, animals, too were healthier, and grew to monstrous proportions. Dinosaur bones are nothing more than modern day animals, but in these gigantic sizes.

The great flood came when the atmospheric temperature dropped and all the water condensed, forming the oceans and flooding most of the earth.

As a result, we lost our protective blanket against the sun’s rays, and our lifespan has diminished accordingly, due to harmful exposure to the sun’s radiation.

Not saying I believe it, but you asked to hear the theory.


49 posted on 03/03/2010 9:31:01 AM PST by SpinnerWebb (mankind are more disposed to suffer, while evils are sufferable, than to right themselves)
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To: SpinnerWebb

There’s also the theory that leading up to the Deluge the earth was in a glacial period and very dry causing lots of problems. Then suddenly one day the ice sheet slipped off Antarctica due to heat and pressure under the ice and flooded the entire world.


50 posted on 03/03/2010 9:41:24 AM PST by numberonepal (Don't Even Think About Treading On Me)
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