Hazard mapping for ice and combined snow/ice avalanches — two case studies from the Swiss and Italian Alps

1999 ◽  
Vol 30 (1-3) ◽  
pp. 159-173 ◽  
Author(s):  
Stefan Margreth ◽  
Martin Funk
Keyword(s):  
Case Studies ◽  
Hazard Mapping ◽  
Italian Alps

scholarly journals Snow Avalanche Impact Measurements at the Seehore Test Site in Aosta Valley (NW Italian Alps)

Geosciences ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 471
Author(s):  
Margherita Maggioni ◽  
Monica Barbero ◽  
Fabrizio Barpi ◽  
Mauro Borri-Brunetto ◽  
Valerio De Biagi ◽  
...  
Keyword(s):  
Flow Regimes ◽  
Test Site ◽  
Snow Avalanche ◽  
Hazard Mapping ◽  
Force Measurements ◽  
Italian Alps ◽  
Scientific Discussion ◽  
Impact Forces ◽  
Wide Range ◽  
Avalanche Flow

In full-scale snow avalanche test sites, structures such as pylons, plates, or dams have been used to measure impact forces and pressures from avalanches. Impact pressures are of extreme importance when dealing with issues such as hazard mapping and the design of buildings exposed to avalanches. In this paper, we present the force measurements recorded for five selected avalanches that occurred at the Seehore test site in Aosta Valley (NW Italian Alps). The five avalanches were small to medium-sized and cover a wide range in terms of snow characteristics and flow dynamics. Our aim was to analyze the force and pressure measurements with respect to the avalanche characteristics. We measured pressures in the range of 2 to 30 kPa. Though without exhaustive measurements of the avalanche flows, we found indications of different flow regimes. For example, we could appreciate some differences in the vertical profile of the pressures recorded for wet dense avalanches and powder ones. Being aware of the fact that more complete measurements are necessary to fully describe the avalanche flows, we think that the data of the five avalanches triggered at the Seehore test site might add some useful information to the ongoing scientific discussion on avalanche flow regimes and impact pressure.

scholarly journals When do rock glacier fronts fail? Insights from two case studies in South Tyrol (Italian Alps)

2021 ◽  
Author(s):  
Christian Kofler ◽  
Volkmar Mair ◽  
Stephan Gruber ◽  
Maria Cristina Todisco ◽  
Ian Nettleton ◽  
...  
Keyword(s):  
Case Studies ◽  
Italian Alps ◽  
Rock Glacier ◽  
South Tyrol

Natural disturbances and protection forests: at the cutting edge of remote sensing technologies for a rapid assessment of a stand protective function

2021 ◽  
Author(s):  
Emanuele Lingua ◽  
Niccolò Marchi ◽  
Francesco Bettella ◽  
Maximiliano Costa ◽  
Francesco Pirotti ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Case Studies ◽  
Forest Fires ◽  
Rapid Assessment ◽  
Critical Issue ◽  
Potential Contribution ◽  
Natural Disturbances ◽  
Italian Alps ◽  
Protective Function ◽  
Protection Forests

<p><br>Protection forests can be severely affected by natural disturbances, whose consequences could greatly alter the fundamental ecosystem services they are providing. Assessing and monitoring the status of the protective function, particularly within disturbed stands, is therefore of vital importance, with timing being a critical issue. Remote sensing technologies (e.g. satellite images, LiDAR, UAV) are nowadays thoroughly available and can be usefully applied in order to quantify and monitor the protective role of Alpine forests, especially after abrupt changes in their cover and structure following the occurrence of a disturbance event. In this contribution, after a brief introduction on these technologies and their potential contribution to protection forest management, some specific case studies will be presented. In particular, we will focus on case studies involving protection forests affected by windthrows (the post-Vaia situation in the Eastern Italian Alps; Lidar and UAV surveys) and by forest fires in the Western Italian Alps (Fall 2017 fires; Sentinel-2 Images).</p>

scholarly journals Spatial variability and potential impacts of climate change on flood and debris flow hazard zone mapping and implications for risk management

2008 ◽  
Vol 8 (3) ◽  
pp. 539-558 ◽  
Author(s):  
H. Staffler ◽  
R. Pollinger ◽  
A. Zischg ◽  
P. Mani
Keyword(s):  
Risk Management ◽  
Debris Flow ◽  
Spatial Variability ◽  
Case Studies ◽  
Climate Changes ◽  
Hazard Mapping ◽  
Hazard Zone ◽  
Debris Flow Hazard ◽  
River Catchments ◽  
Protection Structures

Abstract. The main goals of this study were to identify the alpine torrent catchments that are sensitive to climatic changes and to assess the robustness of the methods for the elaboration of flood and debris flow hazard zone maps to specific effects of climate changes. In this study, a procedure for the identification and localization of torrent catchments in which the climate scenarios will modify the hazard situation was developed. In two case studies, the impacts of a potential increase of precipitation intensities to the delimited hazard zones were studied. The identification and localization of the torrent and river catchments, where unfavourable changes in the hazard situation occur, could eliminate speculative and unnecessary measures against the impacts of climate changes like a general enlargement of hazard zones or a general over dimensioning of protection structures for the whole territory. The results showed a high spatial variability of the sensitivity of catchments to climate changes. In sensitive catchments, the sediment management in alpine torrents will meet future challenges due to a higher rate for sediment removal from retention basins. The case studies showed a remarkable increase of the areas affected by floods and debris flow when considering possible future precipitation intensities in hazard mapping. But, the calculated increase in extent of future hazard zones lay within the uncertainty of the methods used today for the delimitation of the hazard zones. Thus, the consideration of the uncertainties laying in the methods for the elaboration of hazard zone maps in the torrent and river catchments sensitive to climate changes would provide a useful instrument for the consideration of potential future climate conditions. The study demonstrated that weak points in protection structures in future will become more important in risk management activities.

scholarly journals Landslide hazard mapping in Nepal: case studies from Lothar Khola (central Nepal) and Syangja district (western Nepal)

2002 ◽  
Vol 26 ◽  
Author(s):  
V. Dangol ◽  
P. D. Ulak
Keyword(s):  
Case Studies ◽  
Soil Cover ◽  
Landslide Hazard ◽  
Hazard Mapping ◽  
Residual Soil ◽  
Hazard Map ◽  
Central Nepal ◽  
Rating Method ◽  
Landslide Hazard Mapping ◽  
Bivariate Statistical Method

The present paper attempts to evaluate the present status of hazard mapping in Nepal and describes the case studies of landslide hazard mapping of the Lothar Khola (central Nepal) and Syangja district (western Nepal) by two different methods: 1. The rating method proposed in the Mountain Risk Engineering (Deoja et al. 1991), and 2. Bivariate Statistical method developed by the Institute of Aerospace Survey and Earth Sciences (ITC). The Netherlands (Van Westen 1997). The first method is a manual one and used to make hazard map of the Lothar Khola watershed while the second one is GIS based and was utilized to produce hazard map of the Syangja district. Potentially unstable slopes were mainly found on the slopes ranging from 26-40°, residual soil cover, and in areas underlain by the slate and phyllite. Interestingly the slope movement is high in the areas covered by forest in comparison to the cultivated slopes.

Corporate Sustainability: Challenge to Managerial Orthodoxies

2003 ◽  
Vol 9 (1) ◽  
pp. 2-11 ◽  
Author(s):  
Dexter Dunphy
Keyword(s):  
Case Studies ◽  
Corporate Sustainability ◽  
Central Place ◽  
Marked Contrast ◽  
Sustainability Management

ABSTRACTThis paper addresses the issue of corporate sustainability. It examines why achieving sustainability is becoming an increasingly vital issue for society and organisations, defines sustainability and then outlines a set of phases through which organisations can move to achieve increasing levels of sustainability. Case studies are presented of organisations at various phases indicating the benefits, for the organisation and its stakeholders, which can be made at each phase. Finally the paper argues that there is a marked contrast between the two competing philosophies of neo-conservatism (economic rationalism) and the emerging philosophy of sustainability. Management schools have been strongly influenced by economic rationalism, which underpins the traditional orthodoxies presented in such schools. Sustainability represents an urgent challenge for management schools to rethink these traditional orthodoxies and give sustainability a central place in the curriculum.

Short-Form Application of the Screening Test of Spanish Grammar and the Northwestern Syntax Screening Test to Latino Children

1978 ◽  
Vol 9 (4) ◽  
pp. 220-235
Author(s):  
David L. Ratusnik ◽  
Carol Melnick Ratusnik ◽  
Karen Sattinger
Keyword(s):  
New York ◽  
Case Studies ◽  
Metropolitan Area ◽  
Screening Test ◽  
Normative Data ◽  
Short Form ◽  
Latino Children ◽  
Data Application ◽  
York Metropolitan Area ◽  
Multiple Regression Technique

Short-form versions of the Screening Test of Spanish Grammar (Toronto, 1973) and the Northwestern Syntax Screening Test (Lee, 1971) were devised for use with bilingual Latino children while preserving the original normative data. Application of a multiple regression technique to data collected on 60 lower social status Latino children (four years and six months to seven years and one month) from Spanish Harlem and Yonkers, New York, yielded a small but powerful set of predictor items from the Spanish and English tests. Clinicians may make rapid and accurate predictions of STSG or NSST total screening scores from administration of substantially shortened versions of the instruments. Case studies of Latino children from Chicago and Miami serve to cross-validate the procedure outside the New York metropolitan area.

Case Studies for Telepractice in AAC

2014 ◽  
Vol 23 (1) ◽  
pp. 42-54 ◽  
Author(s):  
Tanya Rose Curtis
Keyword(s):  
Service Delivery ◽  
Case Studies ◽  
Eye Gaze ◽  
Cognitive Impairments ◽  
Perceived Barriers ◽  
Computer Experience ◽  
Access Methods ◽  
Complex Communication Needs ◽  
Barriers To Service ◽  
Communication Needs

As the field of telepractice grows, perceived barriers to service delivery must be anticipated and addressed in order to provide appropriate service delivery to individuals who will benefit from this model. When applying telepractice to the field of AAC, additional barriers are encountered when clients with complex communication needs are unable to speak, often present with severe quadriplegia and are unable to position themselves or access the computer independently, and/or may have cognitive impairments and limited computer experience. Some access methods, such as eye gaze, can also present technological challenges in the telepractice environment. These barriers can be overcome, and telepractice is not only practical and effective, but often a preferred means of service delivery for persons with complex communication needs.

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