a multi-disciplinary approach for monitoring cultural...
TRANSCRIPT
Spin Off of Sapienza University of Rome
A multi-disciplinary approach for monitoring cultural heritage: the satellite-based SAR technique integrated with structural models and
geo-hazard maps
Maria Marsella1,2, Peppe J. V. D’Aranno1, Silvia Scifoni1,2, Marianna Scutti2, Alberico Sonnessa1,2
1 Università di Roma La Sapienza, Via Eudossiana 18, 00184 Rome2 Survey Lab srl Spin Off dell’ Università di Roma La Sapienza, Via Eudossiana 18, 00184 Rome
Carla Iadanza1, Carlo Cacace 2, Daniele Spizzichino1, Alessandro Trigila1
1 ISPRA, Institute for Environmental Protection and Research, Geological Survey of Italy, Via Vitaliano Brancati 48, 00144 Rome, Italy, 2 ISCR, Central Institute for the Conservation and Restoration, Via di San Michele 23, 00153 Rome, Italy
MAIN TOPICS
SAR data for structure monitoring
• Projects on monitoring cultural heritage and structures - timeline
• Main products/results obtained
Integration of different datasets for a preliminary damage assessment
• Available data in the Rome area
• Case study : Chiesa di Santa Maria sopra Minerva
• Preliminary results and conclusive remarks
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ASI _PMI World HEritage monitoring by Remote sEnsing (WHERE)
• Monitoring stability of UNESCO structures in urban areas
• developing a system based on DInSAR data to detect deformation
• Based on high-resolution satellite data from Cosmo-SkyMED
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TIMELINE
2012 – 2013 WHERE Project
2013 – 2015 MO.DI. Project
TodayImplementing
service tool
ASI/ESA/BIC - MOnitoring urban areas by means of long term DInSAR time series)
• improving the capability of monitoring structures through a multidisciplinaryapproach combining DINSAR, structural and geotechnical engineering
• Based on the processing of radar satellite ERS/Envisat data archive and the newacquisition provided by COSMO-SkyMed
Development of methodology for Cultural Heritages damage assessment
• Integration of the DINSAR with the geo-hazard maps (ISPRA) and CulturalHeritage exposure map (ISCR) in order identify
• In-situ validation and input for structural modeling
2007 - 2010 Metro C Project
• controlling a number of archaeological sites which can be potentially affectedby the tunneling works for the metro C line
• Based on high-resolution satellite DINSAR data 1992- 2010 ERS/ENVISAT data
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Metro C Project (2007 – 2010)
• Developed within the DICEA (Department of Civil, Building and Environmental
Engineering Sapienza University for the METRO C consortium
• Design the monitoring system to control the interaction of the tunneling works with
historical buildings and monuments in the historical center of Roma
• Integration of ground and satellite based geomatic sensors
• DInSAR technique was used to perform a back-analysis on the cultural heritages (pre-
construction phase)
– Operational service for monitoring the UNESCO sites
using remote sensing data partially financed by ASI
(ASI contract NI / 002/12/0, second theme reserved to
SME call)
– The main aim was to analyse the conservation and the
static condition of structures of high relevance to our
historical heritage in order to detect critical
phenomena and to implement mitigation actions.
– Implementetion of:
Specific analysis tools (Chains of Processing) for the
three types of risk (Urbanization and human
activities, impact weather and climatic, including
pollution; geo-technical and structural stability of
buildings and surrounding;
a Web-GIS to show results of the analysis.
– SURVEY LAB implemented an
interferometric processing chain to detect
areas affected by ground settlements due
to natural and antropic processes was
implemented and tested using Cosmo-
Skymed datasets
GIS/WEB-GIS
Project Control and co-funding
Project ManagementSystem EngineeringChange Detection
Demonstration
Interferometry
Support to NEXTANT: SystemEngineering Change DetectionDemonstration
Meteo-climate
WHERE TEAM
WHERE (World HEritage monitoring by Remote sEnsing) Project
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• Survey Lab developed an innovative services aimed at assessing and mitigating thehazards, generated both by natural (ground settlements, subsidence, landslide, tectonicmotions) and anthropic processes (water pumping, excavations, underground works)impacting on civil structures and infrastructures (public buildings - schools, hospital, etc).,strategic infrastructures (dam, highways, etc) and cultural heritage sites.
• The service is focused on the exploitation of the results of high resolution DInSAR(Differential SAR Interferometry) analysis to investigate the stability of built-up areas atregional and local scales as well as for implementing damage assessment analyses onsingle buildings starting from the knowledge of the occurred displacements.
• For this purpose, MODI service is developed in order to provide three different levels andsub-levels of product
MO.DI. Project
• Financed by the programme ESA BIC LAZIO (ESA Business Incubator Centre Lazio) OpenCall (2013-2015)
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INTEGRATION OF DIFFERENT DATASETS FOR A PRELIMINARY DAMAGE ASSESSMENT - PROCESSING STEPS
Identificationof the criticalstructure/s to
investigateISPRA
Geo-hazardmaps
SAR DATA
ERS/ENVISAT
(1992-2010)
CosmoSkyMED
(2010-2012)
Geological mapsand historical
data (constructive
details, historicalmaps etc.)
ISCR Cultural Heritage
exposure map
PRELIMINARY POTENTIAL DAMAGE ASSESSMENT ON THE IDENTIFIED STRUCTURES
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AVAILABLE DATA – FLOODING MAPS
ISPRA – flooding mapDaniele SPIZZICHINO, Carlo CACACE,Carla IADANZA, Alessandro TRIGILA (2013) BENI CULTURALI E RISCHIO
IDROGEOLOGICO IN ITALIA. Bollettino ICR Nuova Serie numero 27 2013. pp.25-35.
FLOODING AREAS
Cultural heritagesubject to flloding
Cultural Heritage
year
year
year
year
year
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AVAILABLE DATA – VULNERABILITY MAP
VIR (Vincoli In Rete)Vulnerability Maps provided by the ISCR (Central
Institute for the Conservation and Restoration) based http://vincoliinretegeo.beniculturali.it/vir/vir/vir.html
- Around 40 structures classified as vulnerable in the historical centre of Rome
- Vulnerability is calculated by surveying the damage on each element constructive and defining gravity, urgency and extension of the damage
HighMidLow
TYPES OF DAMAGEA DamagesB Disgregation of materialsC MoistureD Biological attacksE Alteration of the surface layersF Missing parts
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AVAILABLE DATA - GEOLOGICAL SETTINGRome Geological Map
Predominance of recentalluvial deposits
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IDENTIFICATION OF THE CRITICAL STRUCTURESAnalyses were preformed on the historical centre of Rome, because of the presence of a large number of cultural heritage
and sites of interests, by correlating different datasets
Average displacement velocity (mm/y)
HighMidLow
Structural vulnerability map
Geological map
FLOODING AREASyear
year
year
year
Cultural heritagesubject to flloding
Hydrological risk map
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INTEGRATION OF DIFFERENT DATASETS FOR A PRELIMINARY DAMAGE ASSESSMENT
Identification of the criticalstructure
Floodable areas
SAR data Geological map
Exposure map
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CASE STUDY : Basilica di Santa Maria sopra Minerva
1. Mean displacement velocity 1.45 mm/y (on CSM data)
2. Differential displacement of the structure
3. Mid architectural/structuralvulnerability
4. Included in the flooding area of the Tiber river
Santa Maria sopra Minerva
Pantheon
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PRELIMINARY RESULTS : ERS/ENVISAT AND CosmoSkyMED
-40
-35
-30
-25
-20
-15
-10
-5
0
5
10
1990 1995 2000 2005 2010 2015
Ers_Envisat
Cosmo-SkyMed
mm
Year
Mean displacement velocity(mm/y)
ERS/ENVISAT time series : 1,36CosmoSkyMED time series : 1,45
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STATE OF THE ARTCONCRETE STRUCTURES vs CULTURAL HERITAGE
REINFORCED CONCRETE STRUCTURES
CULTURAL HERITAGES
(BRICK STRUCTURES)
Land mapping scale analysis
Building scale aggregated analysis
Building scale analysis
Building scalemodelling
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CONCLUSIVE REMARKS
• DInSAR technique offers a great advantage in providing systematic and cost effectivemonitoring of cultural heritage affected by ground settlements caused by natural and/oranthropogenic processes
• The technique, improved by integrating different datasets (geothecnical, structural andhydraulic data), can contribute to i) implement risk analysis in large areas affected bysubsidence, ii) perform damage assessment on single building, iii) improve the monitoringand maintenance plans
• Construction and calibration of numerical model for the damage assessment on brickstructures is very complex
• The integrated use of different dataset permits to better identify the portion of the culturalheritages/monuments affected by structural problems, where perform an in-depth analysisbased on numerical models aimed at modelling the behavior of the whole structure (or partof it)
• At this stage, the DInSAR technique is very useful to drive the processes on cultural heritageby correctly addressing the maintenance and restoration interventions
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THANKS FOR YOUR ATTENTION