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| Titel |
ESONET LIDO Demonstration Mission: the East Sicily node |
| VerfasserIn |
Giorgio Riccobene, Paolo Favali, Michel Andrè, Francesco Chierici, Gianni Pavan, The ESONET LIDO Demonstration Mission Team |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250039691
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| Zusammenfassung |
| Off East Sicily (at 2100 m depth, 25 km off the harbour of Catania) a prototype of a cabled
deep-sea observatory (NEMO-SN1) was set up and has been operational in real-time since
2005 (the cabled deep-sea multi-parameter station SN1, equipped with geophysical and
environmental sensors and the cabled NEMO-OνDE, equipped with 4 broadband
hydrophones). The Western Ionian Sea is one of the node sites for the upcoming European
permanent underwater network (EMSO). Within the activities of the EC project
ESONET-NoE some demonstration missions have been funded. The LIDO-DM (Listening to
the Deep Ocean-Demonstration Mission) is one of these and is related to two sites, East
Sicily and Iberian Margin (Gulf of Cadiz), the main aims being geo-hazards monitoring and
warning (seismic, tsunami, and volcanic) and bio-acoustics. The LIDO-DM East Sicily
installation represents a further major step within ESONET-NoE, resulting in a fully
integrated system for multidisciplinary deep-sea science, capable to transmit and
distribute data in real time to the scientific community and to the general public.
LIDO-DM East Sicily hosts a large number of sensors aimed at monitoring and studying
oceanographic and environmental parameters (by means of CTD, ADCP, 3-C single point
current meter, turbidity meter), geophysical phenomena (low frequency hydrophones,
accelerometer, gravity meter, vector and scalar magnetometers, seismometer, absolute
and differential pressure gauges), ocean noise monitoring and identification and
tracking of biological acoustic sources in deep sea. The latter will be performed using
two tetrahedral arrays of 4 hydrophones, located at a relative distance of about
5 km, and at about 25 km from the shore. The whole system will be connected
and powered from shore, by means of the electro-optical cable net installed at the
East Sicily Site Infrastructure, and synchronised with GPS. Sensors data sampling
is performed underwater and transmitted via optical fibre link, with optimal S/N
ratio for all signals. This will also permit real-time data acquisition, analysis and
distribution on-shore. Innovative electronics for the off-shore data acquisition and
transmission systems has been designed, built and tested. A dedicated computing and
networking infrastructure for data acquisition, storage and distribution through
the internet has been also created. The deployment and connection of the deep
sea structures will be performed using the dedicated ROV and Deep Sea Shuttle
handling facilities (PEGASO, owned by INGV and INFN). LIDO-DM constitutes the
enhancement of the Western Ionian site in view of the EMSO Research Infrastructure. |
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