km3net wp5 vertical profiles of bioluminescence
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KM3Net WP5 Vertical profiles of bioluminescence. Monty Priede & Alan Jamieson Oceanlab [email protected]. The Lander Operating Principle. Descent atTRANSCRIPT
KM3Net WP5Vertical profiles of bioluminescence
Monty Priede & Alan JamiesonOceanlab
The Lander Operating Principle
Descent at <1m.s-1
Data collection possibleduring free fall
The Lander Operating Principle
Mission Duration 8h to 12 months
The Lander Operating Principle
Ship ReturnsAcoustic CommandsActivated
The Lander Operating Principle
Ballast ReleaseAscent Commences
The Lander Operating Principle
Surface, Spotting flagVHF DF + ARGOSData retrieved on board ship
ISIT Lander
ISITcamera
Currentmeter
ballast
MORS acousticreleases
controller
Profile mode
Splat Screen
Camera
ControllerRecorder
CTD ISIT profiler
ISIT Camera profile mode with ‘Splat Screen’ in field of view
April 20010
1000
2000
3000
4000
5000
0 20 40 60 80
Number of events (m-3)
De
pth
(m
)
18-Apr 19-Apr 21-Apr 26-Apr 26-Apr (2)
August 20010
1000
2000
3000
4000
5000
0 20 40 60 80
Number of events (m-3)
De
pth
(m
)
17-Aug 19-Aug 22-Aug 23-Aug25-Aug 27-Aug
Gelatinous impacts (2400m)
Large impact (1100m)
Interaction of Luminescent Organisms with an Array
Spontaneous
Impact Shear
Adhesion
Trapped
Water flow
Biological Factors Detected by an Array
• Abundance of organisms
• Species• Size• Status –
(reproductive, juvenile, larvae)
• Locomotor Ability
• Spontaneous emissions– Inter-specific interactions – Intra-specific interactions
• Stimulated emissions– Water flow velocity– Impacts– Shear stress– Adhesion– Entrapment
Bioluminescence Detected by an Array
1. Decrease with depth2. Seasonal change3. Spontaneous luminescence likely
to be unimportant 4. Luminescence stimulated by the
array may be dominant5. Adhesion and entrapment of
organisms on the array will be be problematic at certain times and depths
The End