Diapositiva 1

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Istituto Nazionale di
Geofisica e Vulcanologia NEMO - SN-1 The 1st
Real-Time Seafloor Observatory of
ESONET Paolo Favali
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Marani et al., 2004
The most important earthquakes 1169, M 6.6
1693, M 7.4 1908, M 7.2
Platania, Il Terremoto di Messina, 1908
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Handling systems - MODUS
weight 10 kN in air (7 kN in water) dimensions
2.37 m (Ø) x 1.7 m power 25 kW thrusters max
6, 2 vert.4 horiz. (700 N each) max payload 30
kN depth rated 4000 m
navigation sonar 360(300 m) 6 cameras (4
videos) lights altimeter (100 m) heading (1)
tilt (1) LF transponder
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Handling systems Cable-winch
HPU

• winch 3.8 x 2.35 x 2.4 m 180 kN
• HPU 1.77 x 1.15 x 1.71 m 20 kN
• max payout speed 70 m/min (1st layer), 51 m/min
  (10th layer)
• static load 80 kN (top layer)
• cable 4000 m, 10 layers, 22 kN/km (in air)-18
  kN/km (in water), 89 kN working load, 205 kN
  breaking strength

25.4 mm (Ø) 3 optic fibres 3 x 3000 VAC-6A
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1st mission stand-alone mode October 02 - May
03 (gt130 days gt12 Gbyte data)
weight 14 kN in air (8.5 kN in
water) dimensions 2.9 x 2.9 x 2.9 m
(overall) depth rated 4000 m
Guralp CMG-1T in the Ti-sphere .0027-50 Hz
3-C broad-band seismometer 100 Hz Z, EW, NS
24 bit Hydrophone
100 Hz 24
bit Gravity meter 1 Hz g, T
24 bit CTD
1 sample/10 min 3-D current meter
2 Hz Vn,Ve,Vz,T,P,H,Tx,Ty 16
bit Precision tilt meter 10 Hz Tx,
Ty 24 bit
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2002 - 2003 ETNA ACTIVITY
Starting 27 October 2002 (26 October 2002 - 25
earthquakes with magnitude from 1.1 to 2.5) End
February 2003 The signals of both seismometer
and gravity meter are characterised by a large
number of earthquakes, superimposed to background
tremor
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SN-1 Background seismic noise
Etna 2002-3 eruption
During After
Before Etna eruption
Monna et al., GRL, 2005
Noise in high and low sea current velocity (N-S
component)
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SN-1 Seismometer Spectrogram 14 October 2002 -
17 January 2003
.001 - .3 Hz
Eruption starting
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SN-1 Gravity meter
Spectrogram October 2002
0.05-0.5 Hz
Spectrogram November 2002
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499 earthquakes recorded only by SN-1 (over 130
days)
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Examples of earthquakes recorded only by SN-1
27 December 2002 Regional event not reported in
the regional seismic bulletins
T
25 December 2002 2347 Local event not reported
in the INGV seismic bulletins
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213 high-quality earthquakes analysed
T. Sgroi, L. Beranzoli, G. Di Grazia, A. Ursino
P. Favali, GJI (submitted)
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Earth Free Oscillations recorded by SN-1 Gravity
meter
Spheroidal modes excited by the great
earthquake of Central Alaska (30 November
2002 2212, Mw 7.9)
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SN-1 (INGV)
INFN Lab Catania harbour
10 Optic Fibres ITU- T G-652 (6 used) 6
Electrical Conductors ? 4 mm2 (4 used)
2.330 m double shield cable
5.220 m
Joint
Joint
BU
Joint
5.000 m
20.595 m single shield underwater cable
NEMO Pilot experiment (INFN)
MoU INFN-INGV, 2001
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SN-1 enhancements for the Real-Time data
transmission
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The 1st Real-Time seafloor observatory in Europe
25 January 2005 2060 m w.d.
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Dry mateable connector
cable 3 OF 2 electical
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The most important teleseismic events
Sumatra Mw 8.7, 28 March 2005
Pakistan MW 7.3, 8 October 05
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Regional/Local examples
Ionian Sea ML4.7, 16 September 05
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Example of local event only recorded by SN-1
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European Seafloor Observatory NETwork
Concerted Action (2002-2004)
Arctic
GOALS Geohazards Global change Biodiversity
Norwegian margin
Nordic
Action Plan of GMES Programme (Global Monitoring
for Environment and Security)
Porcupine
Ligurian Sea
Black Sea
Azores
Hellenic
Eastern Sicily
Iberian margin
10 Key-sites
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IMPLEMENTATION OF FP6 MARINE Underwater
Observatories At most 1 Network of Excellence
(NoE) 4th Call
European underwater ocean observatory system.(To
focus on the margin and deep-sea) It would form
the sub-sea segment of GMES and contribute to the
GEO initiative. Emphasis should be given to SME
participation and to international cooperation,
as well as on the potential for technology
transfer. Call
published in July 19, 2005
Deadlines Outline Nov. 3, 05
Full proposal March 3, 06
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Requested budget 8.96 MEuro
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ESONET NoE European Seas Observatory NETwork
European Commission
Co-ordinator
Scientific Council
Executive Committee
Chairman
Test and Operation Council
Chairman
Data Management Council
Chairman
WP3
WP1
WP2
WP4
WP5
WP6
WP7
WP8
General Assembly
New Associated Partners
Associated Partners
(Main) Contractors
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European
Commission
April 2005 Towards New Research
Infrastructures for Europe European Strategy
Forum for Research Infrastructures (ESFRI)
List of Opportunities(23 Research
Infrastructure projects)
http//www.cordis.lu/esfri/
European Multidisciplinary Seafloor Observatory
(EMSO) European deep-sea neutrino telescope
(KM3NET)
Research Infrastructures refers to tools that
provide essential services to the scientific
community for basic or applied research
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NEMO - SN-1 Participants INGV Laura Beranzoli,
Massimo Calcara, Giuseppe DAnna, Roberto DAnna,
Angelo De Santis, Giuseppe Etiope, Paolo Favali,
Francesco Frugoni, Matteo Grimaldi, Luigi
Innocenzi, Cristina La Fratta, Marcantonio
Lagalante, Nadia Lo Bue, Luigi Magno, Giuditta
Marinaro, Stephen Monna, Caterina Montuori,
Giuseppe Passafiume, Tiziana Sgroi, Stefano
Speciale, Roberto Tardini, Claudio
Viezzoli (consultants) INFN-LNS Giorgio
Cacopardo, Antonio Capone, Tommaso Chiarusi,
Rosanna Concimano, Rosa Coniglione, Michele
Costa, Carmelo D'Amato, Vittorio D'Amato, Antonio
Damico, Carla Distefano, Antonio Grimaldi, Emilio
Migneco, Mario Musumeci, Riccardo Papaleo, Paolo
Piattelli, Guido Raia, Giorgio Riccobene, Dario
Romeo, Alberto Rovelli, Piera Sapienza, Mario
Sedita, Fabrizio Speziale. Tecnomare-ENI S.p.A.
(Francesco Gasparoni) Technische Universität
Berlin (Günther Clauss) Technische Fachhochschule
Berlin (Hans W. Gerber) ISMAR-CNR, Sezione di
Bologna (Michael P. Marani, Fabiano Gamberi)
IFSI-INAF (Valerio Iafolla) Universities of
Roma 3 (Claudio Faccenna), Catania (Stefano
Gresta), Messina (Giancarlo Neri), Palermo (Dario
Luzio) OGS (Marino Russi) Elettra Tlc S.p.A.
(Giuseppe Maugeri)