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Project Topic
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With more than 5 million people affected, more than 1000 killed, and with
estimated total damages exceeding 4.5 billion Euros just in Europe and
during the last decade, floods are among the most disruptive natural
events threatening our Society. Due to increase in extreme weather
events and rapid socio-economic developments in vulnerable locations,
the risks connected to floods in general are growing rapidly, and the
awareness of these risks and of the need to face them efficiently with an
integrated approach is well testified in the "7th Environment Action
Programme" of the European Commission. Strategies for adaptation and
protection can range from reinforcing civil structures, such as dikes and
drainage channels, to careful planning of land use and definition of apt
evacuation plans; in any case, these strategies would strongly benefit from
effective monitoring tools and early warning systems.
In this perspective, project DOMINO aims at developing novel fiber optic
sensors (FOS) for the monitoring of dikes and debris flows, that could
eventually be used to prevent disasters and manage the related
emergency. DOMINO will pursue this goal along two main research lines:
the development of a distributed FOS for ground vibration measurement,
to be employed in debris-flows monitoring, and the development of
distributed and quasi-distributed FOSs for pressure measurement, to be
employed mainly in the monitoring of dikes. FOSs are experiencing ever increasing interest and diffusion as they offer
several advantages over traditional sensors. Their small form factor allows
to easily include them in the structures to be monitored, while the easiness
of remote operation, together with their intrinsic robustness to extreme
conditions, make them befitted to hostile environments. Most of all,
however, FOSs can be easily concatenated and are the only technology
enabling continuous distributed sensing, over distances of several
kilometers. These very unique characteristics make FOSs the sensors of
choice when large structures or sites have to be monitored, just like for
dikes and for the channels and ravines along which debris flows may
develop.
To date, dikes stability is typically monitored by measuring parameters such as displacement, temperature and water pressure at specific
positions. The use of FOSs has started recently, and it is mainly focused
on the distributed measurement of temperature and deformations; nondistributed
pressure FOSs are being investigated too. Results are
encouraging, but the technology is not mature yet, in particular for what
concerns pressure measurement. Differently, the monitoring of debris
flows by means of FOS is still a largely unexplored field. Traditional
monitoring is performed by means of geophones, inclinometers and trip
wires. So far, the few reported examples of FOSs for debris-flow
monitoring are mainly mimicking those devices, without exploiting the full
potential of FOS technology. Project DOMINO will go beyond the state of the art by developing a novel
distributed ground vibration sensor, tailored to the monitoring of debris
flows, and novel distributed and quasi-distributed pressure sensors, to
monitor dike stability and to investigate more in details the rheological and
mechanical properties of debris flows. The complementary competences
needed to succeed in this goal are well represented by the proponent
Team, made of two units with experience in FOSs (University of Padova,
Italy, and University of Alcala, Spain) and two units with experience in geohydrology
(Delft University of Technology, The Netherlands, and Research
Institute for Geo-Hydrological Protection, CNR, Italy). Moreover, the Team
will constantly involve stakeholders and relevant authorities. Eventually,
DOMINO will not be limited to provide new tools for the monitoring and
prevention of floods, but will also establish a new multi-disciplinary
research group in Europe with specific expertise in dike and debris-flow
monitoring.
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