秘鲁利马近期非正规城区的脆弱性和暴露程度

IF 2.6 Q3 ENVIRONMENTAL SCIENCES Progress in Disaster Science Pub Date : 2024-06-30 DOI:10.1016/j.pdisas.2024.100345
Luis Moya , Marta Vilela , Javier Jaimes , Briggite Espinoza , Jose Pajuelo , Nicola Tarque , Sandra Santa-Cruz , Pablo Vega-Centeno , Fumio Yamazaki
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引用次数: 0

摘要

利马大都会区和南美洲许多其他城市的城市地区正在经历快速增长,同时也出现了严重的混乱。由于几十年来无节制的建筑行为,当务之急是确定并更好地了解这些新城区普遍存在的非正规类型。解决信息匮乏问题对于实施适当的应对措施和制定有利于居住在这些地区的社区的新政策至关重要。值得注意的是,了解灾害风险与《仙台减少灾害风险框架》的首要任务是一致的。在本研究中,我们建议使用哨兵-1 星座自 2017 年以来记录的雷达卫星图像来识别利马大都会区的城市发展集群。然后,可以通过目测最后记录的高分辨率光学图像来描绘非正规城市群。通过良好的空间和时间分辨率,我们确定了 25 个非正式区域集群。在我们的发现中,我们注意到其中几个集群位于由建筑垃圾和其他废物组成的垃圾填埋场内,这增加了它们面对泥石流、山体滑坡和地震的脆弱性。此外,我们还注意到一些新城区主要由暂时空置的房屋组成,这凸显了在非正规占用的早期阶段实施搬迁等应对措施的可行性。这些结果凸显了卫星雷达图像在识别近期非正规城区方面的重要作用。
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Vulnerabilities and exposure of recent informal urban areas in Lima, Peru

Urban areas are experiencing rapid growth, accompanied by significant disorder in Lima Metropolitan area and many other cities in South America. Due to decades of uncontrolled construction practices, it is imperative to identify and better understand the types of informalities prevalent in these recent urban areas. Addressing this lack of information is crucial for implementing appropriate countermeasures and developing new policies that benefit the communities residing in such areas. It is worth noting that understanding disaster risk aligns with the first priority of the Sendai Framework for Disaster Risk Reduction. In this study, we propose the use of radar satellite imagery recorded by the Sentinel-1 constellation since 2017 to identify clusters of urban growth in Lima Metropolitan area. Then, the informal urban clusters can be depicted by visual inspection of the last recorded high-resolution optical image. With good spatial and temporal resolution, we identified 25 clusters informal areas. Among our findings, we observed that several of these clusters are situated in landfills comprised of construction and other waste, increasing their vulnerability to debris flow, landslides, and earthquakes. Additionally, we noted that some new urban areas mainly consist of temporarily empty houses, highlighting the feasibility of implementing countermeasures, such as relocations, in the early stages of informal occupation. These results underscore the significant contribution of satellite radar imagery in identifying recent informal urban areas.

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来源期刊
Progress in Disaster Science
Progress in Disaster Science Social Sciences-Safety Research
CiteScore
14.60
自引率
3.20%
发文量
51
审稿时长
12 weeks
期刊介绍: Progress in Disaster Science is a Gold Open Access journal focusing on integrating research and policy in disaster research, and publishes original research papers and invited viewpoint articles on disaster risk reduction; response; emergency management and recovery. A key part of the Journal's Publication output will see key experts invited to assess and comment on the current trends in disaster research, as well as highlight key papers.
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