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Found: The Clearest Ocean Waters On Earth
New Scientist ^ | 6-29-2007 | Catherine Brahic

Posted on 06/29/2007 1:57:31 PM PDT by blam

Found: The clearest ocean waters on Earth

12:38 29 June 2007
NewScientist.com news service
Catherine Brahic

As clear as the clearest lakes on the planet, salty as ocean waters, and roughly the size of the Mediterranean – this, say researchers, is the clearest and most lifeless patch of ocean in the world. And it is in the middle of the Pacific.

"Satellite images that track the amount of chlorophyll in ocean waters suggested that this was one of the most life-poor systems on Earth," explains Patrick Raimbault of the University of the Mediterranean, in Marseille, France.

In October 2004, Raimbault and colleagues set out to study the remarkable patch of ocean water on a three month cruise – called BIOSOPE – that left from Tahiti in French Polynesia, passed by Easter Island and ended on the Chilean coast. Along the way, they sampled the water's chemistry, physics and biology.

Marc Tedetti, also from the University of the Mediterranean, was on the expedition to investigate the water's clarity. He was struck by the colour of the water, which he describes as closer to violet than to blue (see image, right).

Beautiful but barren

Tedetti returned having found "unequivocally" the clearest ocean waters on the planet. "Some bodies of freshwater are equally clear, but only the purest freshwater," Tedetti told New Scientist. "For instance, researchers have found equivalent measurements in Lake Vanda in Antarctica, which is under ice, and is really extremely pure."

At the clearest point of the south-east Pacific, near to Easter Island, Tedetti found that UV rays could penetrate more than 100 metres below the surface.

This correlates with Raimbault's chlorophyll measurements, which suggest the patch contains roughly 10 times less chlorophyll that is found in most ocean waters. Raimbault says the patch

(Excerpt) Read more at environment.newscientist.com ...


TOPICS: News/Current Events
KEYWORDS: clearest; coastalenvironment; desert; environment; ocean; pacific; water

1 posted on 06/29/2007 1:57:33 PM PDT by blam
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To: blam; Travis McGee

the deep blue cobalt of the deep water Caribbean like Batletts Deep or Cayman Trench was always some of my favorite water color

almost inky with foamy top....very contrasted...much more so than say green gulf or north atlantic water or the light blue of the Med or turquoise of the Adriatic..

don’t know Pacific as well granted


2 posted on 06/29/2007 2:02:18 PM PDT by wardaddy (George Bush....I want my money back I gave you. Trent Lott...kiss my Mississippi peckerwood butt)
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To: wardaddy

The clearer the water, the deader it is.


3 posted on 06/29/2007 2:05:34 PM PDT by Alter Kaker (Gravitation is a theory, not a fact. It should be approached with an open mind...)
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To: blam

Photochemistry and Photobiology

Article: pp. 389–397 | Full Text | PDF (108K)
Penetration of Ultraviolet Radiation in the Marine Environment. A Review

Marc Tedetti, Richard Sempéré

Laboratoire de Microbiologie Géochimie et Ecologie Marines, CNRS/INSU, UMR 6117, Centre d’Océanologie de Marseille, Université de la Méditerranée, Marseille, France

UV radiation (UVR) is a significant ecological factor in the marine environment that can have important effects on planktonic organisms and dissolved organic matter (DOM). The penetration of UVR into the water column is likely to change in the near future due to interactions between global warming and ozone depletion......snip
http://www.bioone.org/perlserv/?request=get-abstract&doi=10.1562%2F2005-11-09-IR-733
8888888888888888888888888888888888888888888888888888888888

I KNEW there was a “global warming” in there, LOL....just had to google it with his name....


4 posted on 06/29/2007 2:16:38 PM PDT by Vn_survivor_67-68
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To: Alter Kaker

I read that too...

God save plankton


5 posted on 06/29/2007 2:18:21 PM PDT by wardaddy (George Bush....I want my money back I gave you. Trent Lott...kiss my Mississippi peckerwood butt)
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To: blam
The violet water picture from the article....

6 posted on 06/29/2007 2:21:47 PM PDT by Slicksadick (Go out on a limb........Its where the fruit is.)
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To: blam
Beautiful but barren

AKA Liberal Utopia

7 posted on 06/29/2007 2:21:59 PM PDT by SampleMan (Islamic tolerance is practiced by killing you last.)
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To: blam
Interesting article. I’m not any environmental scientists, but something like this makes me wonder whether there is some kind of volcanic activity underneath, maybe venting of gasses periodically, that kills the carbon life forms then dissipates in an ongoing cycle. That could be working in conjunction with the low current activity to keep the area lifeless.

Back in the 70’s, didn’t they say some of the Great Lakes were dead? I don’t recall hearing that they were sparkling clear though...

8 posted on 06/29/2007 2:45:41 PM PDT by Kay Ludlow (Free market, but cautious about what I support with my dollars)
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To: Kay Ludlow
In the ocean, blue is the color of very low biological productivity. Greenish grey is the color of high biological activity. Blue is the desert color of the ocean.
9 posted on 06/29/2007 2:51:57 PM PDT by Citizen Tom Paine (Swift as the wind; Calmly majestic as a forest; Steady as the mountains.)
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To: Citizen Tom Paine

How about brown? Every time a cruiser goes by my lakefront cottage, the water roils from clear to brown.


10 posted on 06/29/2007 2:56:39 PM PDT by Does so
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To: Slicksadick

I’m not buying that purple ocean color. It looks photoshop adjusted. It’s a shame nothing published can be trusted anymore.


11 posted on 06/29/2007 2:58:08 PM PDT by Reeses
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To: wardaddy

English Channel is green and you can see the sand on the bottom.


12 posted on 06/29/2007 3:01:49 PM PDT by RightWhale (It's Brecht's donkey, not mine)
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To: Alter Kaker
The clearer the water, the deader it is.

I didn't know that but how does that explain the best diving spots in the world where the water is crystal clear but teeming with aquatic life?

13 posted on 06/29/2007 3:04:27 PM PDT by Hot Tabasco
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To: wardaddy

and Mr. Crabs too!


14 posted on 06/29/2007 3:04:45 PM PDT by steveo (Time flies like an arrow, fruit flies like a banana.)
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To: blam
This looks like it’s a little south of where El Ninos form. I wonder if there’s any connection?
15 posted on 06/29/2007 3:07:43 PM PDT by colorado tanker
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To: Hot Tabasco
I didn't know that but how does that explain the best diving spots in the world where the water is crystal clear but teeming with aquatic life?

Except for reefs, they aren't teeming with aquatic life, because warm water contains much less dissolved oxygen than cold water. And even coral reefs support many fewer organisms than, say, the North Atlanic. The fish tend to be more colorful, and the diversity is greater, and, of course, you can see them easier. But tropical waters are, for the most part, an aquatic desert. That's why all the best fishing grounds are in cold waters.

16 posted on 06/29/2007 3:21:59 PM PDT by Alter Kaker (Gravitation is a theory, not a fact. It should be approached with an open mind...)
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To: Alter Kaker

Thanks, I didn’t know that....


17 posted on 06/29/2007 3:31:42 PM PDT by Hot Tabasco
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To: steveo
and Mr. Crabs too!

ROFL! I just snorted a bottle of Leinie's beer through my nose.

18 posted on 06/29/2007 3:33:02 PM PDT by Extremely Extreme Extremist
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To: Extremely Extreme Extremist
I just snorted a bottle of Leinie's beer through my nose.

That's better than actually drinking a Leinie...

L

19 posted on 06/29/2007 3:36:02 PM PDT by Lurker (Comparing moderate islam to extremist islam is like comparing small pox to ebola.)
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To: Lurker

Are you kidding? Once you go Leinie, you’ll never crack a Heine(ken)! :-)


20 posted on 06/29/2007 3:38:26 PM PDT by Extremely Extreme Extremist
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To: Alter Kaker
I vote for the Rouge River in Southeast Michigan. Sometimes it catches fire.
21 posted on 06/29/2007 4:08:32 PM PDT by Westlander (Unleash the Neutron Bomb)
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To: wardaddy

I’ve tossed over soda and beer cans (with punctures of course) when we’ve been becalmed, and seen the silvery top of the can reflect the sun for probably 200+ feet.


22 posted on 06/29/2007 4:53:47 PM PDT by Travis McGee (--- www.EnemiesForeignAndDomestic.com ---)
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To: Travis McGee

we used to throw fuel barrels over and zap em with the HK91 or the old Bushy Armpistol

needlesss to say with a rolling LaFitte 44 and swells, it’s a good thing we had plenty of ammo


23 posted on 06/29/2007 5:37:55 PM PDT by wardaddy (George Bush....I want my money back I gave you. Trent Lott...kiss my Mississippi peckerwood butt)
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To: RightWhale; Travis McGee

I’ve only stood on the banks near Hastings and looked.

black tannic Florida freshwater is very clear too


24 posted on 06/29/2007 5:43:33 PM PDT by wardaddy (George Bush....I want my money back I gave you. Trent Lott...kiss my Mississippi peckerwood butt)
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To: wardaddy; cardinal4

The waters in the Red Sea off Jeddah were incredibly clear. One would think that with amount of super tankers transiting that waterway, the Red Sea would look like the Cuyahoga River in Cleveland, but it was an incredible place to snorkel and SCUBA.


25 posted on 06/29/2007 5:57:24 PM PDT by Ax
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To: Ax

Indeed it was. I still think its the best place to dive..


26 posted on 06/29/2007 6:05:49 PM PDT by cardinal4
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To: blam
As clear as the clearest lakes on the planet, salty as ocean waters, and roughly the size of the Mediterranean – this, say researchers, is the clearest and most lifeless patch of ocean in the world.

Lifeless?
Paging friends of the dirt, Greenpeace, TheSierra Club, Earth First and the other nameless fruitcakes...

Isn't that a small price to pay for perfect clarity?

< /sarc >

27 posted on 06/29/2007 6:21:42 PM PDT by Publius6961 (MSM: Israelis are killed by rockets; Lebanese are killed by Israelis.)
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To: Westlander

“Sometimes it catches fire.”

Sounds like the Schuykill in Philadelphia.


28 posted on 06/29/2007 9:40:15 PM PDT by Jack Hammer
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To: Kay Ludlow

At the risk of alerting Art Bell fans, isn’t this AO a ‘hotspot’ for UFO and USO sightings?


29 posted on 06/29/2007 11:27:11 PM PDT by ASOC (Yeah, well, maybe - but can you *prove* it?)
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To: Ax

my best friend went all over the world diving....red sea, maldives, truk, gbr/aus, cold water dives even north of Hudson bay and off Chile

I dove a bit....just windward and leeward stuff....reefs


30 posted on 06/29/2007 11:52:39 PM PDT by wardaddy (George Bush....I want my money back I gave you. Trent Lott...kiss my Mississippi peckerwood butt)
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To: Alter Kaker

I have abundant life in my swimming pool, and it is not clear.


31 posted on 06/29/2007 11:58:11 PM PDT by Pro-Bush (hater)
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