Modeling Morpho-Structural Settings Exploiting Bedding Data Obtained through the Interpretation of Stereoscopic Aerial Photographs

Landslide abundance is controlled by multiple factors, including the presence and attitude of beddings, foliation, faults, joints and cleavage systems. Few attempts were made to exploit bedding attitude (BA) data (or data on similar types of rock discontinuities) in statistical or physically based models for regional slope stability analysis. A reason for the lack of applications lays in the complexity of the bedding data, and in the difficulty in the treatment and modelling of circular information. Typically, BA data are collected as point data through field surveys, and suffer from heterogeneity in their spatial distribution. The latter problem is particularly important due to the limited possibility to collect BA data in areas of difficult access. An additional problem lays in the spatial interpolation of the BA data, which are directional data that cannot be interpolated using standard approaches. We build on previous work where we proposed an approach to obtain BA data from bedding traces (BT) i.e., linear signatures of layered rocks on the topographic surface, obtained through the visual interpretation of aerial photographs, and to interpolate the BA data to construct maps showing the geometrical relationship between BA data and slope geometry i.e., maps showing cataclinal, orthoclinal, and anaclinal slopes. In this work, we consider the uncertainties in the definition of the BAs that are used in the production of morpho-structural domain maps, and we investigate the relationships between the morpho-structural domains and landslide abundance in a study area in Umbria, Italy

Considering parameter uncertainty in a GIS-based sliding surface model for large areas

The GIS-based open source software r.slope.stability computes broad-scale spatial overviews of shallow and deep-seated slope stability through physically-based modelling. We focus on the landslide-prone 90 km2 Collazzone area, central Italy, exploiting a comprehensive set of lithological, geotechnical and landslide inventory data available for that area. Inevitably, the geotechnical and geometric parameters are uncertain, particularly for their three-dimensional variability. Considering the most unfavourable set of geotechnical parameters (worst case scenario, appropriate for engineering purposes) is less useful to obtain an overview of the spatial probability (susceptibility) of landslides over tens of square kilometres. Back-calculation of the parameters based on topographic and geotechnical considerations would better suit for such a purpose, but obtaining one single parameter combination would require information on one of the parameters. Instead, we estimate the slope failure probability by testing multiple combinations of the model parameters sampled deterministically. Our tests indicate that (i) the geotechnical parameterization used allows to reproduce the observed landslide distribution partly (a challenge consists in the appropriate treatment of the variation of the geotechnical parameters with depth); (ii) the evaluation outcome depends strongly on the level of geographical aggregation; and (iii) when applied to large study areas, the approach is computing-intensive, and requires specific strategies of multi-core computing to keep computational times at an acceptable level

Towards Better Territorial Governance in Europe; A guide for practitioners, policy and decision makers; Applied Research 2013/1/21 ESPON TANGO WP 3.1 | Version 30/11/2013

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Towards better territorial governance in Europe; a guide for practitioners, policy and decision makers based on contributions from the ESPON TANGO Project

Guides help you do things. You turn to them when you need to find out how to solve a problem. They are a form of knowledge transfer, written by experts but in a way that is accessible and helpful to a wide group of users. This Guide was written by the researchers on the ESPON applied research study of Territorial Approaches to New Governance (TANGO). It aims to help those persons and institutions that are delivering territorial governance across Europe. Who is the guide for? This guide is targeted at three groups of potential users. These are: \u95 Practitioners, i.e. private or public professionals that are engaged in territorial governance activities at different scales and/or cohesion policy programmes or projects in Europe. \u95 Policy makers, i.e. public executives and officials in charge of territorial governance at various administrative levels. They may also have the responsibility to implement cohesion policy at the EU level (e.g. officials of the European Commission) or at national, regional and local levels in the Member States. Plans, programmes and projects are their main means of delivering territorial governance. \u95 Decision?makers who are mostly democratically elected politicians, such as members of the EU Parliament, national parliaments, or regional and municipal councils. However, they may also include persons appointed as representatives to bodies with decision?making powers, e.g. community representatives in partnerships for regional development. They are often in charge of ministerial or departmental roles related to territorial governance and to cohesion policy. Through their democratic mandate or a high?level appointment, they are the ones that can establish rules on territorial governance. However, the essence of governance is that it extends beyond governments, engaging a potentially wide range of stakeholders and non?governmental institutions. We hope the Guide can be useful to them, too. Why is a guide needed? Effective partnership working across different scales is recognised as essential for Europe’s cohesion and economic recovery. The Common Strategic Framework for cohesion policy 2014-2020 seeks much better integration of policies, and a more rigorous focus on achieving desired outcomes. In other words, better governance is fundamental to achieving the goals of smart, sustainable and inclusive growth. Integration and partnerships need a territorial dimension if they are to deliver the desired synergies. Box 1 more fully explains why territorial governance has become an increasing concern within Europe.OTB ResearchArchitecture and The Built Environmen

ESPON TANGO: Territorial Approaches for New Governance. Applied Research 2013/1/21, Scientific Report Version 20/12/2013

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ESPON TANGO: Territorial Approaches for New Governance. Applied Research 2013/1/21, Final Report Version 20/12/2013

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