气候变化领域集成服务门户(CCPortal): Spatial Analysis of Exposure of Roads to Flooding and Its Implications for Mobility in Urban/Peri-Urban Accra

CCPortal

DOI	10.3390/ijgi13040111
	Spatial Analysis of Exposure of Roads to Flooding and Its Implications for Mobility in Urban/Peri-Urban Accra
	Yiran, Gerald Albert Baeribameng; Ababio, Martin Oteng; Allotey, Albert Nii Moe; Kofie, Richard Yao; Moller-Jensen, Lasse
发表日期	2024
EISSN	2220-9964
起始页码	13
结束页码	4
卷号	13 期号:4
英文摘要	Climate change seriously threatens human systems, properties and livelihoods. Global projections suggest a continuous increase in the frequency and severity of weather events, with severe outcomes. Although the trends and impacts are highly variable depending on location, most studies tend to concentrate on either the urban or rural areas, with little focus on peri-urban areas. Yet, in Sub-Saharan Africa, peri-urban areas display unique characteristics: inadequate infrastructure, unplanned development, weak governance, and environmental degradation, all of which exacerbate flood impact and thus need academic attention. This study contributes to filling this gap by assessing the flood vulnerability of roads in peri-urban Accra and its implications for mobility. Based on the fieldwork, the study delineated and analysed potential zones within the research locations. The researchers calculated roads' absolute and relative lengths, using a spatial overlay (intersection) of potentially flooded roads with the total road network within the grid cells of 500 m by 500 m. These measures were adopted and used as exposure measures. The findings revealed that over 80% of roads with lengths between 100 m and 500 m were exposed to floods. Some areas had higher exposure indices, with absolute road lengths ranging from 1.5 km to 3.2 km and relative road lengths between 0.8 and 1.0. There were significant variations in road exposure between and within neighbourhoods. Depending on the depth and duration of the floodwater, residents may be unable to access their homes or carry out their daily activities. In conclusion, this study highlights the differential vulnerability of peri-urban areas to road flooding and recommends targeted provision of flood-resilient infrastructure to promote sustainable development.
英文关键词	exposure; flooding; peri-urban neighbourhoods; spatial overlay analysis; urban mobility
语种	英语
WOS研究方向	Computer Science ; Physical Geography ; Remote Sensing
WOS类目	Computer Science, Information Systems ; Geography, Physical ; Remote Sensing
WOS记录号	WOS:001210338300001
来源期刊	ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/289510
作者单位	University of Ghana; University of Copenhagen
推荐引用方式 GB/T 7714	Yiran, Gerald Albert Baeribameng,Ababio, Martin Oteng,Allotey, Albert Nii Moe,et al. Spatial Analysis of Exposure of Roads to Flooding and Its Implications for Mobility in Urban/Peri-Urban Accra[J],2024,13(4).
APA	Yiran, Gerald Albert Baeribameng,Ababio, Martin Oteng,Allotey, Albert Nii Moe,Kofie, Richard Yao,&Moller-Jensen, Lasse.(2024).Spatial Analysis of Exposure of Roads to Flooding and Its Implications for Mobility in Urban/Peri-Urban Accra.ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION,13(4).
MLA	Yiran, Gerald Albert Baeribameng,et al."Spatial Analysis of Exposure of Roads to Flooding and Its Implications for Mobility in Urban/Peri-Urban Accra".ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION 13.4(2024).