GEO Disaster SBA S&T review – Ankara, Turkey, 25 March 2010

Fabio Dell’Acqua, Diego Polli EUCENTRE – University of Pavia

EUCENTRE proposal for GEOThe Remote Sensing Section of EUCENTRE,

after careful consideration of the GEO Workplan, has submitted a proposal, supported by the Seismic Risk section, to address seismic vulnerability mapping based on Earth Observation (EO)

The EUCENTRE proposal was endorsed by UN-SPIDER and included into the WP 2009-2011 as the leading theme of the subtask DI-09-01a, “Vulnerability and Risk Mapping”

GEO Disaster SBA S&T review – Ankara, Turkey, 25 March 2010

Fabio Dell’Acqua, Diego Polli EUCENTRE – University of Pavia

Proposal pillarsFramework with a combination of methodsAddressing different aspects of vulnerability

(physical, human, ease of emergency intervention and recovery, …)

EO-based, but not exclusively (ancillary, GIS …)Initially focussed on urban areasExtraction of features of interest from satellite

images (e.g. number of floors, ratio between window and façade areas, width of vertical walls between windows, …)

GEO Disaster SBA S&T review – Ankara, Turkey, 25 March 2010

Fabio Dell’Acqua, Diego Polli EUCENTRE – University of Pavia

The processing chain

GEO Disaster SBA S&T review – Ankara, Turkey, 25 March 2010

Fabio Dell’Acqua, Diego Polli EUCENTRE – University of Pavia

Case study: Messina (Italy)

Fairly complete dataset, including satellite optical and airborne radar

We have proposed Messina as a possible supersite (ISPRA is willing to contribute relevant data)

optical image & radar image of building

vulnerability curves

GEO Disaster SBA S&T review – Ankara, Turkey, 25 March 2010

Fabio Dell’Acqua, Diego Polli EUCENTRE – University of Pavia

Case study: Priolo (Italy)

Vulnerability map

Detectionof criticalfeatures

Seismic vulnerability model

High-resolution satellite image

GEO Disaster SBA S&T review – Ankara, Turkey, 25 March 2010

Fabio Dell’Acqua, Diego Polli EUCENTRE – University of Pavia

Case study: Caribbean islands

Optical QB images + TerraSAR-X acquisitionsOutput in a GIS-compatible format

test sites (in red) sample vulnerability map

GEO Disaster SBA S&T review – Ankara, Turkey, 25 March 2010

Fabio Dell’Acqua, Diego Polli EUCENTRE – University of Pavia

S&T issuessome parameters relevant to vulnerability

estimation:either can not be extracted from remotely

sensed data at all, orthey can, but only by relying on weak

correlationslimited availability of VHR radar dataintegration of:

proximity sensing“community remote sensing” (voluntary

contribution of information under various forms)

GEO Disaster SBA S&T review – Ankara, Turkey, 25 March 2010

Fabio Dell’Acqua, Diego Polli EUCENTRE – University of Pavia

ConclusionsThe following goals were reached:

A vulnerability model has been chosenA processing chain has been set up and

experimentedThe chain is not yet automatised, although some of

its component are

We lack accurate ground truth to assess the quality and reliability of results

Ideas for funding a currently underfunded activity?