Post on 26-Mar-2015
transcript
Participants:
Gian Pietro Gasparini: scientist (contact person)Stefania Sparnocchia: scientistPierluigi Traverso: scientst Anna Vetrano: scientistBacciola Domenico: technicianMireno Borghini: technicianGiorgio Bruzzone: technician
Carlo Galli: technician
Participant 12: CNR- ISMARParticipant 12: CNR- ISMARSection of La Spezia
(in collaboration with sections of Genova and Trieste)
Italy
ISMAR (Istituto di Scienze del Mare) is a multidisciplinary institute of the Consiglio Nazionale delle Ricerche (CNR), covering many marine topics: physical oceanography, marine geology, chemistry, biology and fishery.
ISMAR section of La Spezia has a long experience on physical oceanography, mainly addressed to experimental studies. At the present, exchange monitoring of water masses through the Sicily Strait and the Corsica Channel is maintained together with oceanographic cruises covering large part of the Mediterranean basin.
Latit
ude
(°N
)
Longitude (°E )
C TD C TD & bottles
2 3 4 5 6 7 8 9 10 11 12 13
37
38
39
40
41
42
43
44
913
900
L1
L14
B1
B8
D1
D12
S1 S21
D13
D19
410
432
212
291
A10
A9
A8
A7
S18S14
Example of oceanographic cruise
*
*
* current
(April – May 2005)
Oceanographic facilities and expertise
-Availability of R/V URANIA
-Oceanographic instruments (hydrographic probes, current meters,…)
-Technical staff with a large experience on the sea:
- mooring assembly, deployment, recovery- Hydrographic measurements- Water sampling acquisition and chemical analysis
In the frame of KM3net CNR-ISMAR will contribute to:
- Oceanographic characterization of deep sea (WP5)
- Development of a model for long-term measurements addressed to climate change studies (WP9)
Oceanographic characterization of deep sea (WP5)
CNR-ISMAR will provide:
- physical oceanographic conditions:
- Current variability- Hydrographic characteristics
- Tests on corrosion
PlanedInvestigations
-Hydrographic conditionsPeriodic surveys along a defined grid from the surface to the bottom.
-Current measurements Long-term monitoring for defining space and time variability of the current field in the region.
- Corrosion tests One or two sample cages will be deployed in the currentmeter mooring, containing 96 samples.
Details on the deployment will be defined after a deep analysis of existing information.
A preliminary hydrographic/current survey is going on during this month.
The intent is to acquire preliminary information on space variability.
01Jul 21Jul 10Aug 30Aug 19Sep 09Oct 29Oct 18Nov 08Dec 28Dec 17Jan
10 cm/s
2001 -2002
First Period
Correlation coefficient: 0.99
Some Preliminary Results
3020m
2700m
July 2001 – January 2002
Mean speed: 3.7 cm/sMax speed: 10.3 cm/s
Mean speed: 3.8 cm/sMax speed: 12.6 cm/s
10-1
100
0
0.2
0.4
0.6
0.8
1
coh
eren
ce
First Period (u component) (period: 2001/ 7/ 1 - 2002/ 2/10)
10-1
100
-180
-90
0
90
180 p
hase
cpd
10-1
100
10-2
10-1
100
101
cpd
cm
2 /s
2 First Period (u component) (period: 2001/ 7/ 1 - 2002/ 2/10)
Current Comparisonat two different depths
Spectral analysis
-350 -300 -250 -200 -150 -100 -50 00
50
100
150
200
250
300
350
400
km
km
-300 -250 -200 -150 -100 -50 0 50-200
-150
-100
-50
0
50
km
km
Jul 2001 – Jan 2002
Nov 2003 – Aug 2004
-80 -60 -40 -20 0 200
10
20
30
40
50
60
70
80
90
km
km
Mar 2002 – Aug 2002Current comparison for three different periods
Mean speed: 3.8 cm/sMax speed: 12.6 cm/s
Mean speed: 2.4 cm/sMax speed: 11.1 cm/s
Mean speed: 3.4 cm/sMax speed: 10.8 cm/s
Sample cage for corrosion test
96 samples; sample dimension: 100mm x 100mm