Color of water
Pawel Kostulak
with beautifuil water and perfect sand. Funny, on some pictures water
is perfectly blue, in some nice and green. What does the color depend
on? Wheather is Fuji or Kodak or is it some complex optical phenomenon?
I figured there is an expert on everything on rec.windsurfing so someone
must know.
BTW, there is more female body in this magazine than I have ever seen in
a single windsurfing mag. It is nice to see something with nice long
hair that windsurfs and is not Josh Stone (not that I have anything
against him).
Pawel
Mike F
your air fare. It's a simple fiscal phenomenon. I'd also be suspicious of
green water, when most of the water is blue. After all, what color is added
to blue to give green? Riiiiight ... YELLOW.
Some say I'm an expert in BS. I guess I just expanded my horizon, if even
only by a short distance.
Mike \m/
"Pawel Kostulak" <paw...@ciris.net> wrote in message
news:3AC02526...@ciris.net...
WARDOG
Pawel Kostulak wrote:
> What does the color depend
> > on? Wheather is Fuji or Kodak or is it some complex optical phenomenon?
> >
Filters and Photoshop...even brown , murky H20 can be made to look
blue...
Some films do favor blues and greens, however...Kodak Ektachrome and
Fujichrome Velvia.
WARDOG
http://surfingsports.com
Karl Ludwig Bonitz
"Pawel Kostulak" <paw...@ciris.net> wrote
> Funny, on some pictures water is perfectly blue, in some nice and
green.
> What does the color depend on? Wheather is Fuji or Kodak or is it
> some complex optical phenomenon?
Taking your question seriously:
So what did I learn in school?
The green is chlorophillic colouring of small algae, i.e. the water is
biologically healthy with enough oxygen to support the basis of sea
life.
The blue is a reflection of the blue sky. The water is to warm to
support algae and, biologically speaking, not healthy, rather dead.
The water itself has no colour...
(Hope I remember that correctly!)
Charlie
Jack in Sarasota
with beautifuil water and perfect sand. Funny, on some pictures water
is perfectly blue, in some nice and green. What does the color depend
on? Wheather is Fuji or Kodak or is it some complex optical phenomenon?
Algae.
Pictures with green water are probably taken in a bay or lagoon, if you are
comparing the same general location.
Jack (Sarasota)
jack.t...@home.com
Styl
>
>So what did I learn in school?
>
>The green is chlorophillic colouring of small algae, i.e. the water is
>biologically healthy with enough oxygen to support the basis of sea
>life.
>The blue is a reflection of the blue sky. The water is to warm to
>support algae and, biologically speaking, not healthy, rather dead.
In Greece, when water is green we never get even close to it.
It is usually in a bay or a harbour that water is green. Or perhaps
it is the shallow sea floor colour that's green and it's reflecting it.
Only in very warm days (and I mean 35C or more) in crowded beaches one
can notice green water, but that should be MikeF's explanation ;-).
Water is otherwise usually blue. Green = polution or sea bed distortion
Mike F
Panhandle ... acknowledged my many as the world's most beautiful beaches.
The sand and gulf floor is snow white, the water stays shallow out for a
kilometer or three, and even back in the '50s, before there was any
population there to pollute it, the water was green. It doesn't get blue
until the bottom recedes far enough from the top to stop having an effect on
the water color. And if I remember correctly, the Atlantic Ocean of the
Florida Keys looked green until it got too deep for snorkeling (> 12
meters). It even seems to me it still looked green from the surface when we
were over SCUBA depths (30 meters), but my memory could have faded -- or
failed totally -- in the intervening 40 years.
Mike \m/
"Styl" <mc9...@nospamming.mail.ntua.gr> wrote in message
news:99vjn2$jef$1...@ulysses.noc.ntua.gr...
Yann Dubois
One fine example is Lake Louise in Banff provincial park in Alberta Canada.
If you've ever been there and seen the lake, you know it is VERY green. The
glacier at the foot of the mountain scrapes away at the underlying rock and
the mineral (I don't remember what it is) is transported with the melt-off
and goes into the lake. As far as I know this isn't bad - unless this
mineral has toxic properties.
Of course, I've never seen or heard of anyone windsurfing on Lake
Louise....
Yann
Ellen Faller
reservation that is, but that mineral would probably be chlorite or
glauconite. Now if the lake were next to a gold mine, other ore
processing plant, or chemical plant, then you might have a problem!
Ellen
Karl Ludwig Bonitz
"Ellen Faller" <eleanor...@yale.edu> schrieb im Newsbeitrag
news:3ACA1FB5...@yale.edu...
> Forgive me for wandering off the reservation, the windsurfing
> reservation that is, but that mineral would probably be chlorite or
> glauconite.
> Yann Dubois wrote:
> >
> > Green water can also occur naturally from the presence of certain
minerals.
Might be copper oxide colouring, too.
Charlie
Ellen Faller
places, copper is often a green color agent.
Ellen
Mike F
this thread is one of optics, water depth, refraction, and bottom color, not
actual water tints. When one looks up from deep water in the Gulf of Mexico
or the Florida Keys, it doesn't (didn't when I lived in that area, anyway)
look green ... or blue. It just looked ... light. It even seems to me that
I've read about this effect, and I'm sure that anybody that really wanted to
know could find info on it a few clicks away under either chemical or
refraction effects on ocean color. After all, air is not blue, but the sky
sure is.
Mike \m/
"Ellen Faller" <eleanor...@yale.edu> wrote in message
news:3ACCB5AB...@yale.edu...
Pipe, Glenn [NGC:B822:EXCH]
"Many other lakes in B.C. share Kalamalka Lake's beautiful blue-green
colour. In all cases, the blue-green colour is attributable to preferential
scattering of blue and green light by minute particles suspended in
the water. In some cases, these are calcium carbonate (CaCO3) particles that
have formed as precipitates within the lake (e.g. Blue Lake - west of
Osoyoos; Kalamalka Lake). In lakes receiving glacial
meltwater however, the particles are "rock flour" derived from glacial
erosion. The many blue-green lakes of Banff and Jasper National Parks are
heavily laden with this pulverized rock material."
Craig (gsogh) Goudie
in air.
The blue is mostly due to oxygen atoms reflecting blue wavelenghts. Water is
typically
blue because of the sky, but it can definitely "tint" depending on its own
reflective/absorptive
properties. I've seen similar lakes within a 100 miles of each other with very
different colors
(while I drive by looking for wind). The Great Salt Lake goes orange here when
the sun is
shining throught the polution haze, and the sky shifts to an orange color.
Maybe you've seen that.
.02
Mike F wrote:
--
Craig (Go Short or Go Home!) Goudie
Sailing the high desert lakes of Utah on my:
RRD 298, Starboard 272 and Bailey 8'6" with
Naish Sails and Rec Composites Fins
Runxoverruny
area.
Slope
Benjamin Kaufman
Ben