Mapping of the Urban Sub Basins Prone to Flood Using PCA Method as A New Weighting Technique

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

GHAZAVI REZA; Babaei Hesar Sahar; ERFANIAN MAHDI

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: JOURNAL OF NATURAL ENVIRONMENT HAZARDS Year:2019 | Volume:8 | Issue:20 Page(s): 83-100

Download Full-Text

Persian Verion

View:

324

Download:

Cites:

Information Journal Paper

Title

Mapping of the Urban Sub Basins Prone to Flood Using PCA Method as A New Weighting Technique

Author(s)

GHAZAVI REZA | Babaei Hesar Sahar | ERFANIAN MAHDI | Issue Writer Certificate

Keywords

AHPQ1

FloodQ1

PCAQ2

PrioritizationQ1

PROMETHEE ΙΙQ2

Urmia CityQ2

Abstract

In urban areas, due to the development of the impermeable area, and consequently increased runoff production capacity, The risk of Flood damage is more serious than other areas. The first step in the management of urban Floods is identifying critical areas. In this research, the PROMETHEE II technique is used to prioritize the subbasins of Urmia prone to Flooding. For this purpose, the boundary layers of the hydrological units were determined using ArcGIS technique based on the slope of the area and the condition of the water conduits and joints. 22 subshells were determined. Physiographic characteristics of sub-basins (runoff depth, imperviousness, elevation, curve number, main channel length, form, perimeter, and area) were selected as ranking criteria. The weight of these variables should greatly affect the sub-basins ranking process and needs to determine with a specific precision. The effect of these variables is also varied in a different region. In this research, the weighting of the criteria was performed using both of the hierarchical analysis method (AHP) and analysis of the main components (PCA). In each sub-basins, the PROMETHEE II technique was applied for weighting methods, and sub-basins were prioritized and compared. The results showed that the priority of the sub-basins differed according to the weighting methods. When two methods of weighing were applied, only two of seven sub-basin have the same priority. The first criteria were runoff depth, and its weight was different for PCA and AHP methods (0. 150 and 0. 280 respectively). The effect of the difference in the weight of the criteria and their priority in Flooding was significant. Among the first seven sub-catchments, there are only four common subcatchments and, among these four sub-catchments, only two of them had the same ranks. This shows that the PCA method is more accurate in weighing the criteria due to the consideration of the spatial characteristics of the criteria and elimination of the error in the survey based methods.

Cites

No record.

References

No record.

Cite

APA: Copy

GHAZAVI, REZA, Babaei Hesar, Sahar, & ERFANIAN, MAHDI. (2019). Mapping of the Urban Sub Basins Prone to Flood Using PCA Method as A New Weighting Technique. JOURNAL OF NATURAL ENVIRONMENT HAZARDS, 8(20 ), 83-100. SID. https://sid.ir/paper/374193/en

Vancouver: Copy

GHAZAVI REZA, Babaei Hesar Sahar, ERFANIAN MAHDI. Mapping of the Urban Sub Basins Prone to Flood Using PCA Method as A New Weighting Technique. JOURNAL OF NATURAL ENVIRONMENT HAZARDS[Internet]. 2019;8(20 ):83-100. Available from: https://sid.ir/paper/374193/en

IEEE: Copy

REZA GHAZAVI, Sahar Babaei Hesar, and MAHDI ERFANIAN, “Mapping of the Urban Sub Basins Prone to Flood Using PCA Method as A New Weighting Technique,” JOURNAL OF NATURAL ENVIRONMENT HAZARDS, vol. 8, no. 20 , pp. 83–100, 2019, [Online]. Available: https://sid.ir/paper/374193/en

Related Journal Papers