Conmy, Del Castillo, Downing, and Chen
192
sampler, similar to the ones used today, to examine the existence of the deep chlorophyll
maximum in the Tropical Atlantic Ocean. It was found that by using this sensor, narrow
bands of increased algal concentrations were resolved and that vertical movement of these
bands was observed on the order of hours (Figure 6.2).
STABILIZER
VARIOSSENS FLUOROMETER
TOWING CABLE
TUNNEL FOR
BIOLOGICAL SAMPLER
DIGITAL CTD UNIT
THERMOMETER
CONDUCTIVITY
CELL
Figure 6.1. Variosens fluorometer mounted on batfish platform. This is the first truly in situ fluorometer to be deployed in water. (Redrawn from Herman & Denman, 1976.)
0
(ChI)
50
13.30 h
12.00 h
21.00 h
Depth (m)
100
150
Figure 6.2. Position of deep chlorophyll max observed using a Variosens fluorometer in the Tropical
Atlantic. (Redrawn from Geiskes et al., 1978.)
192
sampler, similar to the ones used today, to examine the existence of the deep chlorophyll
maximum in the Tropical Atlantic Ocean. It was found that by using this sensor, narrow
bands of increased algal concentrations were resolved and that vertical movement of these
bands was observed on the order of hours (Figure 6.2).
STABILIZER
VARIOSSENS FLUOROMETER
TOWING CABLE
TUNNEL FOR
BIOLOGICAL SAMPLER
DIGITAL CTD UNIT
THERMOMETER
CONDUCTIVITY
CELL
Figure 6.1. Variosens fluorometer mounted on batfish platform. This is the first truly in situ fluorometer to be deployed in water. (Redrawn from Herman & Denman, 1976.)
0
(ChI)
50
13.30 h
12.00 h
21.00 h
Depth (m)
100
150
Figure 6.2. Position of deep chlorophyll max observed using a Variosens fluorometer in the Tropical
Atlantic. (Redrawn from Geiskes et al., 1978.)