LOCO, The Netherlands Irminger Sea (PI Hendrik van Aken)

LOCO, The Netherlands

• Irminger Sea (PI Hendrik van Aken)

• Mozambique Channel (PI Herman Ridderinkhof)

• Lifamatola Passage, Indonesia (INSTANT)

• Canary Basin (PI Hans van Haren, internal waves)

44 43 42 41 40 39 38 37 36 35 34

Longitude (W)

58

59

60

61

Latitude (N)

LOCO2-1

LOCO2-2LOCO3

AR7E

LOCO Irminger Sea

2 moorings fitted with profiling CTD and 2 ADCPs

•2003-2004 1 ADCP failure, data OK

•2004-2005 1 mooring position shifted, data OK

0 50 100 150 200 250 300 350 400

Day relative to 3 Sept. 2003

2500

2000

1500

1000

500

0

Pressure (dbar) 2.5 to 2.9

2.9 to 3.0

3.0 to 3.1

3.1 to 3.3

3.3 to 3.4 3.4 to 3.5

3.5 to 3.6

3.6 to 3.9

3.9 to 4.3

4.3 to 7.5

Potential temperature LOCO-02-1 ( oC)

LOCO-2, example profiler data

LOCO Mozambique Channel

7 moorings with CMs & ADCPs

2000-2001 preliminary observations (~2 year)

2003-Feb 2005

2005-Mar 2006

2006-2008 planned

Mooring 5, examples of current variability over the continental slope off Mozambique

Nov ‘03 March ‘05

Cooperation:

Sediment trap moorings are deployed next to each mooring array, 2 traps, bottom & ~250 m above bottom, also fitted with T sensors

Matter flux and re-suspension with 10-20 day resolution.

The OSC next week will give presentations of all LOCO sites!

Problems encountered

• Large number of ADCP failures (power and data storage)

• Processing proceeds too slow, lack of experienced manpower

•Therefore no data are available yet via Internet

Future

• After 2008 a reduced mooring set in Mozambique Channel

• After 2008 only 1 mooring near center of Irminger Sea

Remaining problem: funding after 2008!