Plan for the prevention of natural risks of slippage — Municipality of Montastruc — Area of hazard — Department of Tarn-et-Garonne.

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Dataset information

Country of origin
Updated
2020.02.28 06:41
Created
2017.11.13
Available languages
French
Keywords
pprn, geoscientific-information, zones-a-risque-naturel, risque-zonages-risque-naturel, passerelle-inspire, donnees-ouvertes
Quality scoring
145

Dataset description

Area exposed to one or more hazards shown on the hazard map used for PPR risk analysis. The map d'random is the result of the study of hazards whose goal is to evaluate the intensity of each hazard at any point in the zone of study. The method d'evaluation is specific to each type of hazard. It leads to the delimitation of a set of zones on the perimeter d'study constituting a graduated zoning according to the level of l'aira. L' attribution D'A hazard level at a given point in the territory takes into account the probability of #x27; occurrence of the dangerous phenomenon and its degree of Â#x27; intensity. For multi-random PPRNs, each zone is usually spotted on the d'aira map by a code for each hazard to which it is exposed. All hazard zones shown on the hazard map are included. Areas protected by protective works must be represented (possibly in a manner specific) because they are always considered subject to the hazard (case of rupture or d' inadequacy of the work). Zones d'random can be described as elaborate data insofar as they result from a synthesis using several calculated sources of data, modelled or observed. These source data are not affected by this class of objects but by another standard dealing with the knowledge of hazards. Some areas of the perimeter of the study are considered “zero or insignificant hazard zones”. It is the areas where the hazard has been studied and is zero. These areas are not included in class d'objects and n'are not to be represented as zones d'random. However, in the case of natural PPRs, regulatory zoning may classify certain areas not exposed to the prescribing zone (see ZonePPR class definition). __Origin__ The boundaries of a zone d’#x27;aira are represented on the map of hazards according to the level of l'random. In other words, polygon objects representing zones d'random form a partial coverage of the studied area of which each cover element is a closed polygon in which hazards have the same level of ' intensity. In other words, the criterion for cutting the zones d'random is the level of l'random. __Partner organisations__ DDT Tarn-et-Garonne __Links annexes__ * [XML metadata view](http://ogc.geo-ide.developpement-durable.gouv.fr/csw/all-dataset?REQUEST=GetRecordById&SERVICE=CSW&VERSION=2.0.2&RESULTTYPE=results&elementSetName=full&TYPENAMES=gmd:MD_Metadata&OUTPUTSCHEMA=http://www.isotc211.org/2005/gmd&ID=fr-120066022-jdd-03d9b09a-592c-46e9-8f9e-220d9dc3ee5e) * [COVADIS data standard: Zone d'aira d'a PPRN](http://geostandards.developpement-durable.gouv.fr/afficherPageStandard.do?jeu=N_ZONE_ALEA_PPRN_AAAANNNN_S) [See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/a05c4a99c04345847f8e923b138f6b1f1b18d073)
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