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Marine biology

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Articles 91 - 120 of 148

Full-Text Articles in Marine Biology

Spring 1999, Nsu Oceanographic Center Apr 1999

Spring 1999, Nsu Oceanographic Center

Currents

No abstract provided.


Semianalytic Moderate-Resolution Imaging Spectrometer Algorithms For Chlorophyll A And Absorption With Bio-Optical Domains Based On Nitrate-Depletion Temperatures, Kendall L. Carder, F. R. Chen, Z. P. Lee, S. K. Hawes, D. Kamykowski Mar 1999

Semianalytic Moderate-Resolution Imaging Spectrometer Algorithms For Chlorophyll A And Absorption With Bio-Optical Domains Based On Nitrate-Depletion Temperatures, Kendall L. Carder, F. R. Chen, Z. P. Lee, S. K. Hawes, D. Kamykowski

Marine Science Faculty Publications

This paper describes algorithms for retrieval of chlorophyll a concentration and phytoplankton and gelbstoff absorption coefficients for the Moderate-Resolution Imaging Spectrometer (MODIS) or sensors with similar spectral channels. The algorithms are based on a semianalytical, bio-optical model of remote sensing reflectance, Rrs([lambda]). The Rrs([lambda]) model has two free variables, the absorption coefficient due to phytoplankton at 675 nn, a[Phi](675), and the absorption coefficient due to gelbstoff at 400 nm, ag(400). The Rrs model has several parameters that are fixed or can be specified based on the region and season of the …


Winter 1999, Nsu Oceanographic Center Jan 1999

Winter 1999, Nsu Oceanographic Center

Currents

No abstract provided.


An Empirical Algorithm For Light Absorption By Ocean Water Based On Color, Zhongping Lee, Kendall L. Carder, R. G. Steward, T. G. Peacock, C. O. Davis, J. S. Patch Nov 1998

An Empirical Algorithm For Light Absorption By Ocean Water Based On Color, Zhongping Lee, Kendall L. Carder, R. G. Steward, T. G. Peacock, C. O. Davis, J. S. Patch

Marine Science Faculty Publications

Empirical algorithms for the total absorption coefficient and absorption coefficient by pigments for surface waters at 440 nm were developed by applying a quadratic formula that combines two spectral ratios of remote-sensing reflectance. For total absorption coefficients ranging from 0.02 to 2.0 m(-1), a goodness of fit was achieved between the measured and modeled data with a root-mean-square difference between the measured and modeled values for log10 scale (RMSDlog10) of 0.062 (15.3% for linear scale, number of samples N = 63), while RMSDlog10 is 0.111 (29.1% for linear scale, N = 126) for pigment absorption (ranging from 0.01 to 1.0 …


Ocean Color Chlorophyll Algorithms For Seawifs, John E. O'Reilly, Stephane Maritorena, B. Greg Mitchell, David A. Siegel, Kendall L. Carder, Sara A. Garver, Mati Kahru, Charles Mcclain Oct 1998

Ocean Color Chlorophyll Algorithms For Seawifs, John E. O'Reilly, Stephane Maritorena, B. Greg Mitchell, David A. Siegel, Kendall L. Carder, Sara A. Garver, Mati Kahru, Charles Mcclain

Marine Science Faculty Publications

A large data set containing coincident in situ chlorophyll and remote sensing reflectance measurements was used to evaluate the accuracy, precision, and suitability of a wide variety of ocean color chlorophyll algorithms for use by SeaWiFS (Sea-viewing Wide Field-of-view Sensor). The radiance-chlorophyll data were assembled from various sources during the SeaWiFS Bio-optical Algorithm Mini-Workshop (SeaBAM) and is composed of 919 stations encompassing chlorophyll concentrations between 0.019 and 32.79 mu g L-1. Most of the observations are from Case I nonpolar waters, and similar to 20 observations are from more turbid coastal waters. A variety of statistical and graphical criteria were …


Spring 1998, Nsu Oceanographic Center Apr 1998

Spring 1998, Nsu Oceanographic Center

Currents

No abstract provided.


Fall 1998, Nsu Oceanographic Center Jan 1998

Fall 1998, Nsu Oceanographic Center

Currents

No abstract provided.


Fall 1998, Nsu Oceanographic Center Jan 1998

Fall 1998, Nsu Oceanographic Center

Currents

No abstract provided.


Winter 1998, Nsu Oceanographic Center Jan 1998

Winter 1998, Nsu Oceanographic Center

Currents

No abstract provided.


Fall 1997, Nsu Oceanographic Center Jan 1997

Fall 1997, Nsu Oceanographic Center

Currents

No abstract provided.


Winter 1997, Nsu Oceanographic Center Jan 1997

Winter 1997, Nsu Oceanographic Center

Currents

No abstract provided.


Summer 1997, Nsu Oceanographic Center Jan 1997

Summer 1997, Nsu Oceanographic Center

Currents

No abstract provided.


Spring 1997, Nsu Oceanographic Center Jan 1997

Spring 1997, Nsu Oceanographic Center

Currents

No abstract provided.


Spring 1996, Nsu Oceanographic Center Jan 1996

Spring 1996, Nsu Oceanographic Center

Currents

No abstract provided.


Winter 1996, Nsu Oceanographic Center Jan 1996

Winter 1996, Nsu Oceanographic Center

Currents

No abstract provided.


Fall 1996, Nsu Oceanographic Center Jan 1996

Fall 1996, Nsu Oceanographic Center

Currents

No abstract provided.


Summer 1996, Nsu Oceanographic Center Jan 1996

Summer 1996, Nsu Oceanographic Center

Currents

No abstract provided.


Winter 1995, Nsu Oceanographic Center Jan 1995

Winter 1995, Nsu Oceanographic Center

Currents

No abstract provided.


Fall 1995, Nsu Oceanographic Center Jan 1995

Fall 1995, Nsu Oceanographic Center

Currents

No abstract provided.


Summer 1995, Nsu Oceanographic Center Jan 1995

Summer 1995, Nsu Oceanographic Center

Currents

No abstract provided.


Spring 1995, Nsu Oceanographic Center Jan 1995

Spring 1995, Nsu Oceanographic Center

Currents

No abstract provided.


Winter 1994, Nsu Oceanographic Center Jan 1994

Winter 1994, Nsu Oceanographic Center

Currents

No abstract provided.


Summer 1994, Nsu Oceanographic Center Jan 1994

Summer 1994, Nsu Oceanographic Center

Currents

No abstract provided.


Fall 1994, Nsu Oceanographic Center Jan 1994

Fall 1994, Nsu Oceanographic Center

Currents

No abstract provided.


Spring 1994, Nsu Oceanographic Center Jan 1994

Spring 1994, Nsu Oceanographic Center

Currents

No abstract provided.


Fall 1993, Nsu Oceanographic Center Jan 1993

Fall 1993, Nsu Oceanographic Center

Currents

No abstract provided.


Spring 1993, Nsu Oceanographic Center Jan 1993

Spring 1993, Nsu Oceanographic Center

Currents

No abstract provided.


Summer 1993, Nsu Oceanographic Center Jan 1993

Summer 1993, Nsu Oceanographic Center

Currents

No abstract provided.


Winter 1993, Nsu Oceanographic Center Jan 1993

Winter 1993, Nsu Oceanographic Center

Currents

No abstract provided.


Plankton Transport Patterns And Residence Times Around A Tall Seamount: Simulation Results, Dorlisa Louise Hommel Oct 1992

Plankton Transport Patterns And Residence Times Around A Tall Seamount: Simulation Results, Dorlisa Louise Hommel

OES Theses and Dissertations

A semi-spectral primitive equation circulation model was used to simulate flow over an isolated gaussian seamount. Model configuration was such that a Taylor Cap was generated in the flow over the seamount. Arrays of 100 drifters were released in the simulated flow fields at several depths (50, 100, 200, and 400 m) both upstream and over the seamount. For several experiments vertical behaviors were imposed on the drifters to simulate zooplankton migration patterns. The drifter simulations extended for three months. Drifter transport patterns were determined by the initial release position of the drifter relative to the Taylor Cap as well …