利用地貌学方法绘制哥斯达黎加圣安娜的滑坡和洪水灾害图

IF 4.2 1区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY
Marco Acosta-Quesada, Adolfo Quesada-Román
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引用次数: 0

摘要

本研究探讨了哥斯达黎加圣安娜市对综合灾害地图的迫切需要,以指导城市和城市周边地区的风险管理。圣安娜位于首都圣何塞附近,是一个快速发展的城市,其特点是拥有高价值房产、商业区、豪华住宅、农业区和保护区。然而,该市面临着山体滑坡和洪水带来的巨大挑战。尽管该市十分脆弱,但却缺乏详细、全面的灾害评估。为了弥补这一不足,我们采用了地貌学方法,包括形态测量和形态发生学,并与地理信息系统 (GIS)、历史数据和现场验证相结合。我们的分析表明,坡度超过 20° 的斜坡特别容易发生山体滑坡,山谷和不稳定的山坡是地震和水引起的失稳的关键区域。在洪水灾害方面,冲积扇和洪泛平原等低坡度、高流量积聚的地区极易受到影响。根据 DesInventar 灾难数据库进行的实地验证和绘图验证证实了我们的危害区划的准确性。这些发现为有效的风险管理、决策和领土规划提供了重要的地理空间见解,使我们能够积极主动地应对圣安娜的自然灾害。虽然这项研究并没有在方法上进行根本性的创新,但其主要贡献在于展示了在资源有限的地区,如何利用易于获取且实用的地貌学工具来生成有价值的风险分区信息。此外,这项研究的方法和见解也适用于面临类似地貌灾害的其他城市和城郊地区,从而突出了其更广泛的相关性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Landslides and flood hazard mapping using geomorphological methods in Santa Ana, Costa Rica
This study addresses the critical need for comprehensive hazard maps to guide urban and periurban risk management in Santa Ana, Costa Rica. Located near the capital, San Jose, Santa Ana is a rapidly developing municipality characterized by high-value properties, commercial zones, luxury housing, agricultural, and protected areas. However, it faces significant challenges from landslides and floods. Despite its vulnerability, the municipality lacks detailed, holistic hazard assessments. To bridge this gap, we employed geomorphological methods, including morphometry and morphogenetics, integrated with geographic information systems (GIS), historical data, and on-site validation. Our analysis identified that slopes exceeding 20° are particularly susceptible to landslides, with valleys and unstable hillslopes being critical zones for seismic and water-induced destabilization. For flood hazards, areas with low slope and high flow accumulation, such as alluvial fans and flood plains, were found to be highly susceptible. Field and mapping validation against the DesInventar disaster database confirmed the accuracy of our hazard zones. These findings provide essential geospatial insights for effective risk management, decision-making, and territorial planning, enabling proactive and adaptive responses to natural hazards in Santa Ana. While this study does not present radical methodological innovations, its main contribution lies in demonstrating how easy-access and practical geomorphological tools can be used to generate valuable information on risk zoning in regions with limited resources. Furthermore, the methodology and insights from this study are applicable to other urban and periurban regions facing similar geomorphic hazards, highlighting its broader relevance.
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来源期刊
International journal of disaster risk reduction
International journal of disaster risk reduction GEOSCIENCES, MULTIDISCIPLINARYMETEOROLOGY-METEOROLOGY & ATMOSPHERIC SCIENCES
CiteScore
8.70
自引率
18.00%
发文量
688
审稿时长
79 days
期刊介绍: The International Journal of Disaster Risk Reduction (IJDRR) is the journal for researchers, policymakers and practitioners across diverse disciplines: earth sciences and their implications; environmental sciences; engineering; urban studies; geography; and the social sciences. IJDRR publishes fundamental and applied research, critical reviews, policy papers and case studies with a particular focus on multi-disciplinary research that aims to reduce the impact of natural, technological, social and intentional disasters. IJDRR stimulates exchange of ideas and knowledge transfer on disaster research, mitigation, adaptation, prevention and risk reduction at all geographical scales: local, national and international. Key topics:- -multifaceted disaster and cascading disasters -the development of disaster risk reduction strategies and techniques -discussion and development of effective warning and educational systems for risk management at all levels -disasters associated with climate change -vulnerability analysis and vulnerability trends -emerging risks -resilience against disasters. The journal particularly encourages papers that approach risk from a multi-disciplinary perspective.
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