Weather : Some clouds / W wind 4 bft/ Rain 3.8 mm
Divers :Mark / Joris / Axel
Goal : Measure visibility with baseline measure card and yellow car, Photoshoot, Made fixed photo point
Max depth : 7.5 mtr
Duration : 40 minutes
Air temp : 12 celsius
Water temp : 6.4 celsius
Thermocline : none
Fish : a cloud of freshwater shrimp near piles.
Plants : Waterweed (Elodea canadensis) range 1-4 mtr depth, some brown leaves
Visibility BC*: At 6 mtr depth 7.5, at 3 mtr depth 10
Visibility YC*: At 6 mtr depth 10.0, at 3 mtr depth 11
Remarks : < 5 divers in the water.
BC= Baseline viz card.
YC= Yellow viz card.
The more light there is the less difference you get between BC en YC.
zaterdag 24 december 2011
zondag 11 december 2011
10-12-2011 15:22 hrs
Weather : Cloudy / W wind 3 bft / Rain < 0.05 mm
Divers : Ted, Gery, Mart, Rick, Jack, Ilya, Mark, Joris, Axel
Goal : Measure visibility with baseline measure card, find dropoff at 13 mtrs and GPS it.
Max depth : 14.3 mtr
Duration : 56 minutes
Air temp : 4.8 celsius
Water temp: 7.6 celsius minimum
Thermocline: none
Fish : 1 dead Pike (Esox Lucius), 1 Eal, (Anguila anguila)
Plants : Waterweed (Elodea canadensis) range 1-4 mtr showing signs of decay. Leafs turning slightly brown
Visibility : At 6 mtr depth 4.5 meters, at 3 mtr depth 5,0 meters.
Remarks : < 10 divers in the water.
Baseline kickoff dive.
Dive Details : From Paviloen at 150 degrees
Divers : Ted, Gery, Mart, Rick, Jack, Ilya, Mark, Joris, Axel
Goal : Measure visibility with baseline measure card, find dropoff at 13 mtrs and GPS it.
Max depth : 14.3 mtr
Duration : 56 minutes
Air temp : 4.8 celsius
Water temp: 7.6 celsius minimum
Thermocline: none
Fish : 1 dead Pike (Esox Lucius), 1 Eal, (Anguila anguila)
Plants : Waterweed (Elodea canadensis) range 1-4 mtr showing signs of decay. Leafs turning slightly brown
Visibility : At 6 mtr depth 4.5 meters, at 3 mtr depth 5,0 meters.
Remarks : < 10 divers in the water.
Baseline kickoff dive.
Dive Details : From Paviloen at 150 degrees
zondag 4 december 2011
04-12-2011 13:02 hrs hbos
Weather : Cloudy / W wind 5 bft / Rain 1.9 mm
Divers : John, Axel
Goal : Place marks on 3 and 6 mtr depth on right outer pile of Paviljoen.
Measure visibility with baseline measure card and yellow card
Max depth : 11.0 mtr
Duration : 43 minutes
Air temp : 8.4 celsius
Water temp: 8.8 celsius
Thermocline: none
Fish : none
Plants : Waterweed (Elodea canadensis) range 1-4 mtr depth no decay
Visibility : At 6 mtr depth 5 meters, at 3 mtr depth 5,5 meters.
Remarks : < 10 divers in the water.
The baseline viz meter indicates 2 meters of visibility less than a yellow card. If one's sight is a bit impared than the yellow square suddenly disappears is more easy to read out than a card with the white lines. Maybe a combination of the two type of cards can give a better average of the two measured distances. In this case viz of 6 meters.
Divers : John, Axel
Goal : Place marks on 3 and 6 mtr depth on right outer pile of Paviljoen.
Measure visibility with baseline measure card and yellow card
Max depth : 11.0 mtr
Duration : 43 minutes
Air temp : 8.4 celsius
Water temp: 8.8 celsius
Thermocline: none
Fish : none
Plants : Waterweed (Elodea canadensis) range 1-4 mtr depth no decay
Visibility : At 6 mtr depth 5 meters, at 3 mtr depth 5,5 meters.
Remarks : < 10 divers in the water.
The baseline viz meter indicates 2 meters of visibility less than a yellow card. If one's sight is a bit impared than the yellow square suddenly disappears is more easy to read out than a card with the white lines. Maybe a combination of the two type of cards can give a better average of the two measured distances. In this case viz of 6 meters.
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