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xlink:href="http://www.bipm.org/en/si"/>								</gml:BaseUnit>							</gmd:valueUnit>							<gmd:value>								<gco:Record>									<gco:Real>50</gco:Real>								</gco:Record>							</gmd:value>						</gmd:DQ_QuantitativeResult>					</gmd:result>				</gmd:DQ_AbsoluteExternalPositionalAccuracy>			</gmd:report>			<gmd:report>				<gmd:DQ_DomainConsistency>					<gmd:result>						<gmd:DQ_ConformanceResult>							<gmd:specification>								<gmd:CI_Citation>									<gmd:title>										<gmx:Anchor xlink:href="http://data.europa.eu/eli/reg/2010/1089">REGOLAMENTO (UE) N. 1089/2010 DELLA COMMISSIONE del 23 novembre 2010 recante attuazione della direttiva 2007/2/CE del Parlamento europeo e del Consiglio per quanto riguarda l'interoperabilità dei set di dati territoriali e dei servizi di dati territoriali</gmx:Anchor>									</gmd:title>									<gmd:date>										<gmd:CI_Date>											<gmd:date>												<gco:Date>2010-12-08</gco:Date>											</gmd:date>											<gmd:dateType>												<gmd:CI_DateTypeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">pubblicazione</gmd:CI_DateTypeCode>											</gmd:dateType>										</gmd:CI_Date>									</gmd:date>								</gmd:CI_Citation>							</gmd:specification>							<gmd:explanation>								<gco:CharacterString>Fare riferimento alle specifiche indicate</gco:CharacterString>							</gmd:explanation>							<gmd:pass gco:nilReason="unknown"/>						</gmd:DQ_ConformanceResult>					</gmd:result>				</gmd:DQ_DomainConsistency>			</gmd:report>			<gmd:lineage>				<gmd:LI_Lineage>					<gmd:statement>						<gco:CharacterString>Al fine di ottenere una prima e speditiva valutazione dell-esposizione all-azione dei fenomeni di versante di strutture e infrastrutture a scala regionale, la Struttura Semplice Geologia e Nivologia del Dipartimento Rischi Naturali e Ambientali di Arpa Piemonte ha realizzato una mappa di grado di connessione morfologica tra i diversi settori dei versanti alpini e i target antropici di principale interesse strategico e di salvaguardia.L'analisi della connettività è stata eseguita per caratterizzare e identificare le potenziali aree sorgenti di materiale mobilizzabile ad opera di fenomeni di versante, concentrandosi sulla loro effettiva connessione morfologica e topografica con viabilità principale e aree densamente urbanizzate.L'indice di connettività (IC) è un indice basato sulla topografia, originariamente sviluppato da Borselli et al., 2008 e adattato agli ambienti montani da Cavalli et al., 2013. Utilizzando un DEM ad alta risoluzione, è possibile generare una mappa IC di un dato versante calcolando il logaritmo del rapporto tra le componenti di salita (Dup) e di discesa (Ddn) per ciascuna cella, come descritto nell'equazione (1):IC = log(Dup/Ddn) (1)La componente di salita esprime il potenziale di deflusso discendente del materiale mobilizzabile, mentre la componente discendente rappresenta la lunghezza del percorso di propagazione del materiale verso il target più vicino (equazione 2):Dup = W x S x A; Ddn = sommatoria(di/WiSi) (2)Entrambe le componenti incorporano un fattore di ponderazione che tiene conto dell'impedenza di propagazione dovuta all'influenza topografica sulla connettività del materiale mobilizzabile tramite l-utilizzo della rugosità superficiale per catturare meglio gli effetti della morfologia e della topografia sui processi di versante (equazione 3):W = 1 - (RI/RImax) (3)Le mappe di IC risultanti sono state calcolate utilizzando il tool freeware e open source SedInConnect, sviluppato da Crema et al., 2015, strumento già applicato con successo in Piemonte per identificare la connessione tra aree sorgenti e propagazione di processi di versante (Tiranti et al. 2016, 2018). Il risultato finale è stato poi classificato in quattro categorie di grado di connessione (ovvero di esposizione potenziale ai processi di versante): basso, moderato, alto e molto alto.Tale approccio ha consentito di identificare (N.B. senza considerare la componente cinetica dei processi di versante) quali target antropici sottesi ad un dato settore di versante sono connessi, e quindi potenzialmente raggiungibili, dai processi gravitativi che possono verificarsi nel settore di versante considerato.Si sono così evidenziate le porzioni di infrastrutture e aree urbanizzate direttamente esposte ai potenziali pericoli naturali che possono innescarsi sui vicini versanti.Referenze bibliograficheBorselli L., Cassi P., Torri D. (2008) Prolegomena to sediment and flow connectivity in the landscape: A GIS and field numerical as-sessment. Catena, 75, 268-277. https://doi.org/10.1016/j.catena.2008.07.006Cavalli M., Trevisani S., Comiti F., Marchi L. (2013) Geomorphometric assessment of spatial sediment connectivity in small Alpine catchments. Geomorphology, 188, 31-41. https://doi.org/10.1016/j.geomorph.2012.05.007 Crema S., Schenato L., Goldin B., Marchi L., Cavalli M. (2015) Toward the development of a stand-alone application for the as-sessment of sediment connectivity. In Rendiconti Online Societa Geologica Italiana; Societa Geologica Italiana; pp. 58-61. https://doi.org/10.3301/ROL.2015.37Tiranti D., Cavalli M., Crema S., Zerbato M., Graziadei M., Barbero S., Cremonini R., Silvestro C., Bodrato G., Tresso F. (2016) Semi-quantitative method for the assessment of debris supply from slopes to river in ungauged catchments. Science of the Total Environment 554-555: 337-348. https://doi.org/10.1016/j.scitotenv.2016.02.150 Tiranti D., Crema S., Cavalli M., Deangeli C. (2018) An Integrated Study to Evaluate Debris Flow Hazard in Alpine Environment. Front. Earth Sci. 6:60. https://doi.org/10.3389/feart.2018.00060</gco:CharacterString>					</gmd:statement>				</gmd:LI_Lineage>			</gmd:lineage>		</gmd:DQ_DataQuality>	</gmd:dataQualityInfo>
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