Chlorophyll maximums controled by underwater current and solar irradiation

Ichio Asanuma; Kazuhiko Matsumoto; Takeshi Kawano; Chizuru Saitoh; Marlon R. Lewis; Scott McLean

doi:10.1117/12.266408

6 February 1997 Chlorophyll maximums controled by underwater current and solar irradiation

Ichio Asanuma, Kazuhiko Matsumoto, Takeshi Kawano, Chizuru Saitoh, Marlon R. Lewis, Scott McLean

Proceedings Volume 2963, Ocean Optics XIII; (1997) https://doi.org/10.1117/12.266408
Event: Ocean Optics XIII, 1996, Halifax, Nova Scotia, Canada

Abstract

Through the bio-optical measurement over the equatorial warm water pool, we could discuss the vertical structure of the chlorophyll maximum. The chlorophyll-a from the surface to the top of the chlorophyll maximum layer was expressed as the inverse function of photosynthetically available radiance (EdPAR). The chlorophyll-a from the bottom of chlorophyll maximum layer to 150 m was expressed as logarithm function of EdPAR. As we could observe the different current streams within the surface mixed layer by the ship-mounted ADCP, we could make a new hypothesis on the generation of chlorophyll maximum layer in the warm water pool. As the top portion of the chlorophyll maximum layer is in the east-north-east current and the nitrate in this layer is depleted, it is supposed the chlorophyll maximum to be maintained by the reproduction. As the deeper portion of the chlorophyll maximum layer was on the top of the north-west current and it was just above the nitracline, it is supposed the chlorophyll maximum to be maintained by the new production.

Citation Download Citation

Ichio Asanuma, Kazuhiko Matsumoto, Takeshi Kawano, Chizuru Saitoh, Marlon R. Lewis, and Scott McLean "Chlorophyll maximums controled by underwater current and solar irradiation", Proc. SPIE 2963, Ocean Optics XIII, (6 February 1997); https://doi.org/10.1117/12.266408

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available