REQ: some info on light intensity

Bas van Dijk bas at iris
Fri Sep 2 09:45:26 EST 1994


Choon-YeeHoh wrote:
: I am interested in finding out some information on the value of
: light intensity that are not available in most photosynthesis 
: text book:


: 2) By how much is the light intensity reduced after passing
: through 2 - 3 metres of sea water? A formulae will be more
: appreciated.


I'm not sure that this will be of any help but I thought let's send it 
anyway:


Light absorption of CLEAR water relative to that at 1 meter depth:

Depth in m.      violet    blue   blue/green  green  yellow  red
5                 13.4     55.0      75.0      75.0   99.75   99.63
10                20.0     56.3      83.4      83.4   99.8    99.73

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