An urban system perspective on urban flood resilience using SEM: evidence from Nanjing city, China

2014 ◽

Vol 641-642 ◽

pp. 84-87

Author(s):

Xin Wen ◽

Guo Hua Fang

Keyword(s):

Control System ◽

Flood Control ◽

Drainage System ◽

Flood Management ◽

Urban Flood ◽

Technology Application ◽

Management Technology ◽

Nanjing City ◽

System Improvement ◽

Reform And Opening Up

Currently, the development of flood control system of Nanjing City has been entering a new critical phase, facing some great challenging problems that never experienced before. To meet these challenges, this research initially reviewed the developing process of flood control system of Nanjing City after China's reform and opening up. Based on the analysis of current flood control situation, four major challenge of was summarized. To solve these problems, this research provided some productive suggestions for future development of flood control system of Nanjing City from six perspectives, namely principle of flood control, layout of flood control system, drainage system improvement, flood management, technology application and supporting measures.

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A GIS based urban flood risk analysis model for vulnerability assessment of critical structures during flood emergencies

Natural Hazards and Earth System Sciences Discussions ◽

10.5194/nhessd-2-2405-2014 ◽

2014 ◽

Vol 2 (4) ◽

pp. 2405-2441

Author(s):

R. Albano ◽

A. Sole ◽

J. Adamowski ◽

L. Mancusi

Keyword(s):

Risk Analysis ◽

Urban Area ◽

Flood Risk ◽

Urban Areas ◽

Quantitative Estimation ◽

Urban System ◽

Analysis Model ◽

Urban Flood ◽

Practical Applications ◽

Flood Risk Analysis

Abstract. Risk analysis has become a priority for authorities and stakeholders in many European countries, with the aim of reducing flooding risk by considering the priority and benefits of possible interventions. Within this context, a flood risk analysis model was developed in this study that is based on GIS, and integrated with a model that assesses the degree of accessibility and operability of strategic emergency response structures in an urban area. The proposed model is unique in that it provides a quantitative estimation of flood risk on the basis of the operability of the strategic emergency structures in an urban area, their accessibility, and connection within the urban system of a city (i.e., connection between aid centres and buildings at risk) in the emergency phase. The results of a case study in the Puglia Region in Southern Italy are described to illustrate the practical applications of this newly proposed approach. The main advantage of the proposed approach is that it allows for the defining of a hierarchy between different infrastructures in the urban area through the identification of particular components whose operation and efficiency are critical for emergency management. This information can be used by decision makers to prioritize risk reduction interventions in flood emergencies in urban areas.

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Discussion on the Planning and Design of Taxi Service Center: A Case Study of Jiangning District, Nanjing City

CICTP 2017 ◽

10.1061/9780784480915.393 ◽

2018 ◽

Author(s):

Yue Wang ◽

Fang-Fang Zheng

Keyword(s):

Service Center ◽

Planning And Design ◽

Taxi Service ◽

Nanjing City

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Urban Flood Mapping

10.31227/osf.io/mc2p5 ◽

2017 ◽

Author(s):

Indra Riyanto ◽

Lestari Margatama

Keyword(s):

Natural Disasters ◽

Satisfying Condition ◽

Three Dimensions ◽

Urban Flood ◽

Digital Elevation ◽

Elevation Data ◽

Recent Occurrence ◽

Elevation Model ◽

Digital Elevation Model Data ◽

Potential Area

The recent degradation of environment quality becomes the prime cause of the recent occurrence of natural disasters. It also contributes in the increase of the area that is prone to natural disasters. Flood history data in Jakarta shows that flood occurred mainly during rainy season around January – February each year, but the flood area varies each year. This research is intended to map the flood potential area in DKI Jakarta by segmenting the Digital Elevation Model data. The data used in this research is contour data obtained from DPP–DKI with the resolution of 1 m. The data processing involved in this research is extracting the surface elevation data from the DEM, overlaying the river map of Jakarta with the elevation data. Subsequently, the data is then segmented using watershed segmentation method. The concept of watersheds is based on visualizing an image in three dimensions: two spatial coordinates versus gray levels, in which there are two specific points; that are points belonging to a regional minimum and points at which a drop of water, if placed at the location of any of those points, would fall with certainty to a single minimum. For a particular regional minimum, the set of points satisfying the latter condition is called the catchments basin or watershed of that minimum, while the points satisfying condition form more than one minima are termed divide lines or watershed lines. The objective of this segmentation is to find the watershed lines of the DEM image. The expected result of the research is the flood potential area information, especially along the Ciliwung river in DKI Jakarta.

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