APPLICATIONS Investigate the « particulate biomass » distribution along a size continuum and its variability in relation with W/E gradient or with different.

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APPLICATIONS Investigate the « particulate biomass » distribution along a size continuum and its variability in relation with W/E gradient or with different trophic regimes. Significance of the diurnal variations for all the particles. Optics applications : to document relationships between the slope of the size distribution and the particle attenuation spectra. c p ( ) =  - 

Hiac PVM ESD (µm) Density ESD (µm) Density Hiac Coulter

PROSOPE

PROSOPE (MIO, 15m)

Spearman Correlation Pomme l o n g i t u d e ( ° N ) latitude (°W) Slope l o n g i t u d e ( ° N ) latitude (°W) Geopotential anomalies

Measurements Continuous size distribution from 1 to 1000 µm by using complementary devices: –Coulter Counter (<1 – 10 µm) discrete samples (rosette), manual process (50 ml) –Hiac Counter (5 – 100 µm) discrete (rosette) & continuous sampling, automated (300 ml) –PVM (100 – 1000 µm) continuous sampling vertical profiler