Sensors, Radar Technologies and Cybersecurity UnitInstitute for the Protection and Security of the Citizen

Monitoring of the Danube Banks Stability with JRC’s LISA System

J. Fortuny-Guasch, G. Antonello, M. Basso, D. Tarchi, and A. J. Sieber

JRC Information Day

Bucarest, 11 May 2006

Sensors, Radar Technologies and Cybersecurity UnitInstitute for the Protection and Security of the Citizen 04/21/23

Outline

LISA working principle

Motivation of the recent JRC mission during the flood emergency

Description of sites monitored with the LISA system

Displacement maps

Interpretation of results

Concluding remarks

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Working Principle

One image in 7 min

2 m Long Linear Scan

Radar Image

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LISA Characteristics

It is a ground-based radar system to produce maps of displacement

Displacement in the line of sight to Lisa position

Monitored area spans 1-5 square km

Maximum range 3-4 km

Sub-millimeter accuracy

Relative measurement between two images

Day and night operation

1 kW power consumption and 100 kg total weight

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Complementarity

Time

Cro

ss-R

ange

Range

TimeC

ross

-Ran

ge

Range

Space-Borne Ground-Based

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LISA

Tsunami Early-Warning in Stromboli

LISA

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Cummulated Displacement inStromboli - 64 Days / 6400 Images

LISA

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Stromboli

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Motivation of the Mission

The monitoring with the LISA instrument offered to Romanian Authorities on Thursday 20 Apr

First site of interest was in the Bistret area

Confirmation of interest the day after

Shipment of the LISA system to Timisoara on Sunday 23 Apr

Monitoring of 1 day in Borcea and 4 days in Bentu

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Shipment from Timisoara to Craiova

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Bistret Area

Originally the monitoring site was in the Bistret Area

Unfortunately, on 24 Apr 2006 the dike collapsed and about 10000 people had to be evacuated

Romania’s National Society of Land Reclamation (SIFI) suggested the sites of Borcea and Bentu (150 km East from Bucarest)

On Tuesday 25 Apr the Lisa system was shipped to Borcea on a helicopter

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Bistret Area on 24 Apr 2006

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Bistret Area on 24 Apr 2006

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Shipment to Borcea

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View from Helicopter

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Arrival to Borcea on 25 Apr

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Map of the Area

BorceaBentuBucarest

Black Sea

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Map of the Area

Borcea

Bentu

Danube

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System Installation in Borcea (25 Apr)

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Measurement Set-up

DikeDike

LisaDanube

Displacement in theline of sight (LOS) direction

3-4 m

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Field of View

Dike

SmallLake

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Map of Borcea

MonitoredArea

Displacement Map

400 m

LISA

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Displacement Map in Borceaon 26 April

• 12 h 45 min of continuous monitoring

• Time series of 162 images

• No significant displacements observed

Areas with minorinstability (3-4 mm)

Far side of the river

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Map of Bentu Site

MonitoredArea

Displacement Map1000 m

LISA

Poles

of Power Line

Dike

Houses

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LISA Deployment in Bentu(26 Apr – 1 May)

• 3 days 15 h 3 min of uninterrupted monitoring

• Time series of 757 images • Power generator monitored

by local farmer

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Field of View

Dredging Vessel

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Displacements After 2 Days

Areas with minorinstability (3-4 mm)

Unstable Poles

Dike

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Displacements After 3 Days

Areas with minorinstability

Unstable Poles

Dike

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Displacements After 4 Days

Areas with minorinstability (3-4 mm)

Unstable Poles

Dike

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Interpretation of Results

Both sites (Borcea and Bentu) are basically stable and no major displacements were observed

In Bentu, three poles of the power line are slightly unstable (3-4 mm in four days), the one near the dredging vessel more unstable

The houses area in the Bentu site is stable

Minor displacements due to the passing cars detected on the dike

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Acknowledgement

Everyone at the National Society of Land Reclamation (SIFI) and specially Ing. Luigi Berghes, Messrs. Ion Nedelcu, Ionel Dan, and Vasile Florea, Ionel Patrichi, the interpreter, the driver, the farmers, …

Dr. Attila Blenesi-Dima at the Ministry of Agriculture, Forests and Rural Development

Ing. Ursuleanu Sorin at the Ministry for Internal Affairs

Dr. Marius-Ioan Piso, Director of Romanian Space Agency

Mr. Giorgio Ficcarelli (EC Delegation Office Bucarest)

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THANKS!