Grupo de Trabajo del CCA de Oceanografa Operacional

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Grupo de Trabajo del CCA de Oceanografía
Operacional

• Drifting
• buoys

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Drifting buoys (CMIMA-CSIC, IIM-CSIC, U. Vigo)

• Objective Real time surface water mass tracking
• Methodology Deployment and satellite tracking of
  drifting buoys
• Drifter model SERPE-IESM SC40
• Location ARGOS system
• 8-12 times per day
• 500 m uncertainty
• Information downloading Automatic checking of
  ARGOS server
• updated every 30 minutes
• data list and trajectories displayed at CMIMA web
  pages

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SC40 drifterSpherical float 40 cm diam.18.5 kg
floatationTemperature sensorARGOS transmitter
every 90 sec.Magnetic ON/OFF switchStandard
configuration TOGA-WOCE holey sock
drag ratio 170 sub-surface current
tracking4 units from ICM and LIM-UPCSC40 G3
model SC40GPS10 units bought in late
December
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Prestige configuration no sub-surface
drogue wood vane weight Deployment
from helicopter or vessel Expected to follow
wind and waves drag together (?) with oil
spills Online information http//www.cmima.csic.e
s
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Deployment strategy according to CCA Operational
Oceanography Coordination First deployment 4
SC40 units 19 December 12h UT SASEMAR
helicopter Inside and north of big oil
spill 16754 42º 40.1' N 9º 35.3' W 16751 42º
52.0' N 9º 25.1' W 16753 42º 57.0' N 9º 34.9'
W 16752 43º 05.0' N 9º 25.0' W Trajectories
during 18 h after deployment (CMIMA web pages)
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Second deployment 2 SC40-G3 units 2 January
17h UT SASEMAR helicopter French slope in the
Gulf of Gascogne 23289 45º 34' 27'' N 4º 00'
34'' W 23282 45º 15' 09'' N 3º 20' 52''
W Third deployment 2 SC40-G3 units Expected
12-13 January R.V. ATALANTE On Prestige sunk
location 3 extra SC40-G3 units on board ready
for deployment
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Trajectories on 9 January afternoon (U. Vigo web
pages)