scholarly journals Hazard Assessment under Multivariate Distributional Change-Points: Guidelines and a Flood Case Study

Water ◽  
2018 ◽  
Vol 10 (6) ◽  
pp. 751 ◽  
Author(s):  
Gianfausto Salvadori ◽  
Fabrizio Durante ◽  
Carlo De Michele ◽  
Mauro Bernardi
Keyword(s):  
Hazard Assessment ◽  
Change Points ◽  
Distributional Change

A methodology for resiliency assessment of existing bridges – a study on a bridge from 1930

2021 ◽  
Author(s):  
Guy L. Larose ◽  
Pierre-Olivier Dallaire ◽  
Theresa Erskine ◽  
Chiara Pozzuoli ◽  
Emanuele Mattiello
Keyword(s):  
Hazard Assessment ◽  
Health Monitoring ◽  
Ad Hoc ◽  
Rehabilitation Program ◽  
Wind Loading ◽  
Close Collaboration ◽  
Current State ◽  
Design Life ◽  
Existing Bridges

<p>This paper introduces the methodology RWDI has developed, tested and consolidated over the years working in close collaboration with bridge designers, owners and operators, for the multi-hazard assessment of existing bridges and the ad hoc development of a structural health monitoring programme leading to enhanced resiliency. The work is highlighted through the presentation of a case study for a 2,725 m long cantilever bridge built in 1930. The dynamics of the structure in its current state were characterised and its capacity to today and future wind loading was assessed fully following the proposed methodology prior to the initiation of a structural rehabilitation program to extend the design life of the bridge beyond its 150th anniversary.</p>

The role of data source selection in chemical hazard assessment: A case study on organic photovoltaics

2019 ◽  
Vol 365 ◽  
pp. 227-236 ◽  
Author(s):  
Haoyang He ◽  
Yadira Gutierrez ◽  
Thomas M. Young ◽  
Julie M. Schoenung
Keyword(s):  
Hazard Assessment ◽  
Organic Photovoltaics ◽  
Source Selection ◽  
Chemical Hazard ◽  
Data Source

A combined approach for flood hazard assessment using hydrological, hydraulic and GIS modeling case study of El Hamiz Wadi, Algeria

2021 ◽  
Vol 14 (11) ◽  
pp. 1-12
Author(s):  
Nadir Louchahi ◽  
Ali Hadjiedj ◽  
Nesrine Hameidia
Keyword(s):  
Hazard Assessment ◽  
Flood Hazard ◽  
Hydraulic Modeling ◽  
Assessment Model ◽  
Residential Areas ◽  
Gis Modeling ◽  
Flood Hazard Assessment ◽  
Mapping Techniques ◽  
Urban Concentration

Flood hazard is one of the most destructive natural phenomena causing a significant material damage and human losses in Algeria during the past decade. The aim of this study is to assess and characterize the flood hazard in El Hamiz watershed (Algeria). In addition, this study identifies areas and elements prone to this hazard to minimize the damages and losses. The methodology used in the present study is based on a combination of hydrological and hydraulic modeling using the Hec-Ras software and mapping techniques using a Geographic Information System (GIS). The flood hazard assessment model of El Hamiz wadi using different hydrological (rainfall / runoff transfer and return period), hydraulic (water level and flow velocity) and exposure (land use data and socio-economic data) parameters revealed that the downstream part of the studied area is the most susceptible to flood events. The mapping of flood-prone areas indicated the extent of this phenomena on the El Hamiz wadi banks, especially through heavy submersion of residential areas characterized by a high urban concentration including inhabitants, activities and infrastructures.

scholarly journals Modeling of <i>E. coli</i> distribution for hazard assessment of bathing waters affected by combined sewer overflows

2020 ◽  
Vol 20 (5) ◽  
pp. 1219-1232 ◽  
Author(s):  
Luca Locatelli ◽  
Beniamino Russo ◽  
Alejandro Acero Oliete ◽  
Juan Carlos Sánchez Catalán ◽  
Eduardo Martínez-Gomariz ◽  
...  
Keyword(s):  
Water Quality ◽  
Hazard Assessment ◽  
Health Hazard ◽  
Water Bodies ◽  
Combined Sewer Overflows ◽  
Bathing Water ◽  
Bathing Waters ◽  
Combined Sewer ◽  
Bathing Water Quality

Abstract. Combined sewer overflows (CSOs) affect bathing water quality of receiving water bodies by bacterial pollution. The aim of this study is to assess the health hazard of bathing waters affected by CSOs. This is useful for bathing water managers, for risk assessment purposes, and for further impact and economic assessments. Pollutant hazard was evaluated based on two novel indicators proposed in this study: the mean duration of insufficient bathing water quality (1) over a period of time (i.e., several years) and (2) after single CSO/rain events. In particular, a novel correlation between the duration of seawater pollution and the event rainfall volume was developed. Pollutant hazard was assessed through a coupled urban drainage and seawater quality model that was developed, calibrated and validated based on local observations. Furthermore, hazard assessment was based on a novel statistical analysis of continuous simulations over a 9-year period using the coupled model. Finally, a validation of the estimated hazard is also shown. The health hazard was evaluated for the case study of Badalona (Spain) even though the methodology presented can be considered generally applicable to other urban areas and related receiving bathing water bodies. The case study presented is part of the EU-funded H2020 project BINGO (Bringing INnovation to OnGOing water management – a better future under climate change).

A method for the hazard assessment of regional geological disasters: a case study of the Panxi area, China

2019 ◽  
Vol 66 (1) ◽  
pp. 143-162 ◽  
Author(s):  
Fang Lai ◽  
Qiufang Shao ◽  
Ying Lin ◽  
Xia Yi ◽  
Xiaofei Sun ◽  
...  
Keyword(s):  
Hazard Assessment ◽  
Geological Disasters ◽  
Panxi Area

scholarly journals Rockburst hazard assessment based on seismic tomography and analytical modelling - a case study

2018 ◽  
Vol 66 ◽  
pp. 01009
Author(s):  
Dariusz Chlebowski ◽  
Zbigniew Burtan
Keyword(s):  
Hazard Assessment ◽  
Seismic Tomography ◽  
Vertical Component ◽  
Rockburst Hazard ◽  
Expert Opinions ◽  
Deformable Media ◽  
Coal Deposits ◽  
Threat Level ◽  
Survey Results

In accordance with the formal regulations currently in force in Poland, the criteria for rockburst hazard assessment with respect to coal deposits include the records of seismic events and their impacts, de-stressing of the entire seam or its parts and expert opinions of mine operation engineers. Effectiveness of the de-stressing can be verified by geophysical test data whilst the expert opinions are mostly based on mathematical modelling using specialist software or dedicated simulation algorithms. This study collates and synthesises the results of tests carried out in a seam section in a colliery within the Upper Silesia Coal Basin, obtained by the outlined methods. Geophysical survey results are interpreted basing on seismic tomography procedures utilising the geo-tomography techniques for velocity field reconstruction in data processing. For comparison, the stress state modelling data are provided, based on conventional engineering solutions applicable to mechanics of deformable media. The actual assessment of the rockburst threat level is based on observations of distributions of the longitudinal wave velocity in relation to the actual value of the vertical component of stress concentration within the coal seam.

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