Dynamic risk assessment of urban flood disasters based on functional area division—A case study in Shenzhen, China

大洪水 地理 人口 分区 环境规划 市区 环境资源管理 城市规划 地图学 土木工程 环境科学 生态学 工程类 环境卫生 考古 生物 医学
作者
Ting Wang,Huimin Wang,Zhiqiang Wang,Huang Jing
出处
期刊:Journal of Environmental Management [Elsevier BV]
卷期号:345: 118787-118787 被引量:14
标识
DOI:10.1016/j.jenvman.2023.118787
摘要

The assessment of urban flood risk plays a vital role in disaster prevention and mitigation. This work aims to assess the dynamic risk of urban flood triggered by population movements through dividing urban functional zoning from the perspective of collective cognition. Firstly, the urban functional areas are identified using Points of Interest data and then the population movements mobile is detected based on functional areas using mobile signaling big data. Then, one-dimensional and two-dimensional hydrodynamic models are employed to simulate the 50-year flood scenario in Futian District, Shenzhen. Finally, a spatio-temporal dynamic assessment model for urban flood risk is constructed based on the extent of inundation, water depth, population density, and the disaster-bearing capacity of functional areas. The research findings are as follows: (1) Futian District's urban planning showcases harmonious integration of single-function and mixed-function areas. Utilizing the 50% perception standard efficiently identifies distinct functional types across diverse urban zones. The results are highly consistent with the actual situation. (2) During morning peak hours, the population exhibits a nuanced pattern of dispersal, concentration, and transition. Lunchtime witnesses multiple central clusters forming and gradually dispersing, while the evening peak witnesses population regrouping, covering broader geographical extents. Dynamic utilization of functional areas and mobile phone signaling data outperforms static population metrics, offering deeper insights into the complexities of human activity. (3) Between 12:00 and 13:00, lunchtime movements lead to a surge of 6 high-risk zones in the central area and 5 in the Meiling area. The dynamic flood risk assessment model, based on functional area delineation, effectively identifies disparities and fluctuations in flood risk across diverse functional areas during rainfall scenarios, ensuring heightened precision and accuracy in risk assessment.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
王王发布了新的文献求助10
2秒前
哈哈哈完成签到,获得积分10
3秒前
酷波er应助阿九采纳,获得10
4秒前
可爱的函函应助晨时明月采纳,获得10
4秒前
大模型应助飘逸楷瑞采纳,获得20
7秒前
blueskyzhi发布了新的文献求助10
8秒前
8秒前
赘婿应助将军采纳,获得10
9秒前
赘婿应助哈哈哈采纳,获得10
11秒前
不要加糖完成签到,获得积分10
13秒前
13秒前
Dicy发布了新的文献求助10
13秒前
丘比特应助和谐的以寒采纳,获得10
13秒前
彭于晏应助坦率大米采纳,获得10
17秒前
17秒前
华仔应助结实的思远采纳,获得10
18秒前
科研通AI5应助胡茶茶采纳,获得10
18秒前
飘逸楷瑞发布了新的文献求助20
19秒前
乐乐应助Dicy采纳,获得10
20秒前
感性的早晨完成签到 ,获得积分10
21秒前
大郎发布了新的文献求助20
21秒前
21秒前
情怀应助刘述采纳,获得10
22秒前
正直美女发布了新的文献求助10
23秒前
乐乐应助duke采纳,获得100
24秒前
he完成签到 ,获得积分10
25秒前
28秒前
29秒前
丘比特应助正直美女采纳,获得10
30秒前
Menaly完成签到 ,获得积分10
30秒前
31秒前
32秒前
32秒前
32秒前
刘述完成签到,获得积分10
32秒前
33秒前
34秒前
Menaly关注了科研通微信公众号
34秒前
安详飞鸟发布了新的文献求助10
35秒前
刘述发布了新的文献求助10
35秒前
高分求助中
Les Mantodea de Guyane Insecta, Polyneoptera 2500
Mobilization, center-periphery structures and nation-building 600
Technologies supporting mass customization of apparel: A pilot project 450
China—Art—Modernity: A Critical Introduction to Chinese Visual Expression from the Beginning of the Twentieth Century to the Present Day 430
Tip60 complex regulates eggshell formation and oviposition in the white-backed planthopper, providing effective targets for pest control 400
A Field Guide to the Amphibians and Reptiles of Madagascar - Frank Glaw and Miguel Vences - 3rd Edition 400
China Gadabouts: New Frontiers of Humanitarian Nursing, 1941–51 400
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 物理 生物化学 纳米技术 计算机科学 化学工程 内科学 复合材料 物理化学 电极 遗传学 量子力学 基因 冶金 催化作用
热门帖子
关注 科研通微信公众号,转发送积分 3792198
求助须知:如何正确求助?哪些是违规求助? 3336436
关于积分的说明 10281070
捐赠科研通 3053210
什么是DOI,文献DOI怎么找? 1675507
邀请新用户注册赠送积分活动 803469
科研通“疑难数据库(出版商)”最低求助积分说明 761429