Accession Number:

ADA222384

Title:

Light Absorption, Attenuation, and Fluorescence in the Planktonic Ecosystem of the North Atlantic: Measurements and Modeling in Support of the Marine Light and Mixed Layer Program

Descriptive Note:

Final technical rept. 15 Mar 1987-14 Mar 1989,

Corporate Author:

UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES

Personal Author(s):

Report Date:

1990-05-07

Pagination or Media Count:

4.0

Abstract:

Our long term goal is to understand the biological and optical properties of the planktonic community of the open ocean and to derive mathematical descriptions of this community. We pursue our research goal largely by analyzing bio-optical signals measured in the field and by comparing these signals with the predictions of mathematical models. During this work we developed a macrophotometric technique for measuring the absorption of light by suspended microparticles in sea water. We also developed in collaboration with R. Iturriaga a technique for measuring the absorption efficiency factor for individuals cells. During the 4 Biowatt cruises in 1987, we made over 500 measurements of the spectral absorption coefficient of suspended microparticles and developed a statistical technique for determining the contribution by phytoplankton to this coefficient. In addition, we completed a microphotometric analysis of spectral light absorption efficiency by individual particles collected during the Biowatt I cruise. In 1988 we continued our analysis of variability in the spectral absorption coefficient of microparticles in the western Sargasso Sea. jes

Subject Categories:

  • Biology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE