Flooding Risk Assessment in the Middle Tiber River Valley with Remediation Proposal

2020 ◽  
pp. 111-115
Author(s):  
Giuseppe Sappa ◽  
Flavia Ferranti
Keyword(s):  
Risk Assessment ◽  
River Valley ◽  
Tiber River ◽  
Flooding Risk

scholarly journals Conception and Evolution of the Probabilistic Methods for Ship Damage Stability and Flooding Risk Assessment

2021 ◽  
Vol 9 (6) ◽  
pp. 667
Author(s):  
Dracos Vassalos ◽  
M. P. Mujeeb-Ahmed
Keyword(s):  
Risk Assessment ◽  
Probabilistic Method ◽  
Probabilistic Methods ◽  
Full Description ◽  
Safety Level ◽  
Probability Of Survival ◽  
Damage Stability ◽  
Passenger Ships ◽  
Flooding Hazards ◽  
Flooding Risk

The paper provides a full description and explanation of the probabilistic method for ship damage stability assessment from its conception to date with focus on the probability of survival (s-factor), explaining pertinent assumptions and limitations and describing its evolution for specific application to passenger ships, using contemporary numerical and experimental tools and data. It also provides comparisons in results between statistical and direct approaches and makes recommendations on how these can be reconciled with better understanding of the implicit assumptions in the approach for use in ship design and operation. Evolution over the latter years to support pertinent regulatory developments relating to flooding risk (safety level) assessment as well as research in this direction with a focus on passenger ships, have created a new focus that combines all flooding hazards (collision, bottom and side groundings) to assess potential loss of life as a means of guiding further research and developments on damage stability for this ship type. The paper concludes by providing recommendations on the way forward for ship damage stability and flooding risk assessment.

Improvement to flooding risk assessment of storm surges by residual interpolation in the coastal areas of Guangdong Province, China

2017 ◽  
Vol 453 ◽  
pp. 1-14 ◽  
Author(s):  
Xina Wang ◽  
Xianwei Wang ◽  
Jianqing Zhai ◽  
Xiucang Li ◽  
Huabing Huang ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Storm Surges ◽  
Guangdong Province ◽  
Coastal Areas ◽  
Flooding Risk

scholarly journals Urban Flooding Risk Assessment Based on Numerical Simulation of Sub-catchment Area: A Case Study From Chengdu, China

2021 ◽  
Author(s):  
Xuejin Ying ◽  
Ting Ni ◽  
Mingxia Lu ◽  
Zongmin Li ◽  
Yi Lu ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Evaluation Method ◽  
Flood Hazard ◽  
Evaluation Model ◽  
Assessment System ◽  
Urban Flooding ◽  
Fuzzy Evaluation ◽  
Evaluation Indexes ◽  
Flooding Disaster ◽  
Flooding Risk

Abstract Urbanization and climate change usually result in frequent urban flooding. Since the floods cannot be avoided, the scenario simulation combined with risk analysis is an effective way to assess the disaster level and reduce direct damage loss when facing the emergency management problems. Different from the whole city dimension, the paper proposed a sub-catchment multi-index hesitant fuzzy evaluation model for the community planning level, and takes Jinjiang District of Chengdu city as the research object. Firstly, based on the PSR (Pressure-State-Response) model, the risk assessment system has been established in three aspects, including the current situation of urban drainage, the basic geographic information, and the social influence. Secondly, A total of 14 evaluation indexes were selected, among which the pressure index came from the calculation results of ArcGIS and EPASWMM5 model such as runoff coefficient, maximum water depth, etc. Thirdly, the expert hesitate fuzzy evaluation method was used to obtain the weight of 14 indexes of each sub-catchment. Finally, the 224 evaluation results were compared, and the urban flooding disaster risk map has been drawn. It is mainly concluded that 160 medium-higher risk areas were mainly concentrated in high built-up area in study area. Furthermore, the evaluation model is very useful as a decision-making tool for mitigation of the flood hazard and its associated risk.

scholarly journals FLOODS RISK ASSESSMENT IN BULGARIA

2017 ◽  
Vol 5 ◽  
pp. 1253-1258
Author(s):  
Venelin Tsankov Makakov ◽  
Rositsa Todorova Velichkova ◽  
Iskra Sashova Simova ◽  
Detelin Ganchev Marko
Keyword(s):  
Risk Assessment ◽  
Urban Planning ◽  
Natural Disaster ◽  
Early Warning ◽  
Human Population ◽  
Statistical Data ◽  
The World ◽  
Flooding Risk ◽  
Laws And Regulations

Floods continue to be the most economically devastating natural disaster in the world. Worldwide, there are a lot of laws and regulations addressing this problem, as well as different models and approaches developed for flooding risk assessment at different stages of urban planning. The aim of this work is to review the existing measures for prevention of floods that threaten the security of the human population, flora and fauna. The study focuses on the necessary measures which must be implemented to tackle the problem, and early warning of population in emergency and disaster situations in order to reduce damage from floods. Existing statistical data is reviewed and analyzed and, as a consequence, recommendations are proposed.

scholarly journals Methodology for qualitative urban flooding risk assessment

2013 ◽  
Vol 68 (4) ◽  
pp. 829-838 ◽  
Author(s):  
João P. Leitão ◽  
Maria do Céu Almeida ◽  
Nuno E. Simões ◽  
André Martins
Keyword(s):  
Risk Assessment ◽  
Public Transportation ◽  
Flood Risk ◽  
Urban Areas ◽  
Overland Flow ◽  
Urban Flood ◽  
Rainfall Events ◽  
Transportation Services ◽  
Recent Developments ◽  
Flooding Risk

Pluvial or surface flooding can cause significant damage and disruption as it often affects highly urbanised areas. Therefore it is essential to accurately identify consequences and assess the risks associated with such phenomena. The aim of this study is to present the results and investigate the applicability of a qualitative flood risk assessment methodology in urban areas. This methodology benefits from recent developments in urban flood modelling, such as the dual-drainage modelling concept, namely one-dimensional automatic overland flow network delineation tools (e.g. AOFD) and 1D/1D models incorporating both surface and sewer drainage systems. To assess flood risk, the consequences can be estimated using hydraulic model results, such as water velocities and water depth results; the likelihood was estimated based on the return period of historical rainfall events. To test the methodology two rainfall events with return periods of 350 and 2 years observed in Alcântara (Lisbon, Portugal) were used and three consequence dimensions were considered: affected public transportation services, affected properties and pedestrian safety. The most affected areas in terms of flooding were easily identified; the presented methodology was shown to be easy to implement and effective to assess flooding risk in urban areas, despite the common difficulties in obtaining data.

scholarly journals Tectonics and fluvial dynamism affecting the Tiber River in Prehistoric Rome

2021 ◽  
Author(s):  
F. Marra ◽  
A. L. Brock ◽  
F. Florindo ◽  
P. Macrì ◽  
L. Motta ◽  
...  
Keyword(s):  
Bronze Age ◽  
River Valley ◽  
Fault Line ◽  
Tiber River ◽  
Show Evidence ◽  
Fault Lines ◽  
Tiber Valley ◽  
Fault Displacement ◽  
New Evidence ◽  
The Bronze Age

AbstractGeomorphological investigations in Rome’s river valley are revealing the dynamism of the prehistoric landscape. It is becoming increasingly apparent that paleogeographic conditions that defined Rome in the historical era are the product of changes since the Bronze Age, which may be the result of local fault activity in addition to fluvial dynamism. Through a dedicated borehole chronostratigraphic study, integrated by 14C and archaeological dates, and paleomagnetic investigations, we offer here new evidence for fault displacement since ca. 4500 years/BP. We present the failure of the sedimentary fabric of a clay horizon caused by liquefaction processes commonly linked with seismic shaking, interpreting an (ca. 4 m) offset to signify the existence of a fault line located at the foot of the Capitoline Hill. In addition, we show evidence for another (ca. 1 m) offset affecting a stratigraphic horizon in the river channel, occurring along another hypothesized fault line crossing through the Tiber Valley. Movement along this fault may have contributed to a documented phase of fast overflooding dated to the sixth century BCE which eventually led to the birth of the Tiber Island. The most plausible scenario implies progressive deformation, with an average tectonic rate of 2 mm/year, along these inferred fault lines. This process was likely punctuated with moderate earthquakes, but no large event necessarily occurred. Together, the available evidence suggests that during the early centuries of sedentary habitation at the site of Rome, active fault lines contributed to significant changes to the Tiber River valley, capable of challenging lowland activities.

scholarly journals RISK ASSESSMENT METHODOLOGY AT ISLA DEL CARMEN, MEXICO

2012 ◽  
Vol 1 (33) ◽  
pp. 16
Author(s):  
Mireille Escudero Castillo ◽  
Edgar Mendoza Baldwin ◽  
Rodolfo Silva Casarín
Keyword(s):  
Risk Assessment ◽  
Risk Mitigation ◽  
Natural Habitat ◽  
Mitigation Measures ◽  
Integrated Risk Assessment ◽  
Integrated Risk ◽  
Assessment Approach ◽  
Flooding Risk ◽  
Risk Assessment Methodology ◽  
Harmful Effects

Extreme hydro-meteorological phenomena lead annually to serious damage and losses in the coastal zone of Isla del Carmen, on the Gulf of Mexico. The importance of the risk assessment is the possibility of preventing or reducing those harmful effects. In this context, an integrated risk assessment approach is performed based on the source-pathway-receptor concept to assess the flooding risk in the area. The paper analyses the consequences on the dune ecosystem that extends longitudinally along the island; and the effects on the population, infrastructure and natural habitat located next to the beach. The results of the study will be used to define the zones with a higher level of risk and to propose flood risk mitigation measures. Moreover, the study will contribute to the establishment of specific legislation which supports the protection of the coastal dune.

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