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Application of geospatial technologies in developing a dynamic landslide early warning system in a humanitarian context: the Rohingya refugee crisis in Cox’s Bazar, Bangladesh
Geomatics, Natural Hazards and Risk ( IF 4.5 ) Pub Date : 2020-01-01 , DOI: 10.1080/19475705.2020.1730988
Bayes Ahmed 1 , Md. Shahinoor Rahman 2, 3 , Peter Sammonds 1 , Rahenul Islam 4 , Kabir Uddin 5
Affiliation  

Abstract Since August 2017, more than 744,400 stateless Rohingya refugees – an ethnic Muslim minority group from the Rakhine State – have entered Bangladesh to escape serious crimes against humanity conducted by the Myanmar Army. Extensive level of deforestation and hill cutting activities took place in Cox’s Bazar District (CBD) in Bangladesh to accommodate them. The refugee camps are sitting on hills and loose soil and are highly vulnerable to rainfall-triggered landslides. Notably in June 2017, landslides in the same region killed at least 160 people. From this perspective, the study aims to develop a localised landslide early warning system (EWS) for the Rohingya refugees and their host communities in CBD. A novel method, combining landslide inventory and susceptibility maps, rainfall thresholds and dynamic web-based alert system, has been introduced to develop the landslide early warning system (EWS) by applying advanced geoinformation techniques. Results suggest that approximately 5,800 hectares of forest land cover disappeared due to the 2017 Rohingya influx. Land cover changes through hill cutting andslope modifications, and unplanned urbanisation are predominantly responsible for slope failures and consecutive 5-day periods of rainfall between 95–220 mm could initiate landslides in high susceptible areas. The EWS would support the local authorities and international organisations in reducing disaster risks and saving lives from landslides in a humanitarian context. GRAPHICAL ABSTRACT

中文翻译:

地理空间技术在人道主义背景下开发动态滑坡预警系统中的应用:孟加拉国科克斯巴扎尔的罗兴亚难民危机

摘要 自 2017 年 8 月以来,超过 744,400 名无国籍的罗兴亚难民——来自若开邦的穆斯林少数民族——进入孟加拉国,以逃避缅甸军队实施的严重危害人类罪。孟加拉国的考克斯巴扎尔区 (CBD) 进行了广泛的森林砍伐和山地砍伐活动,以容纳他们。难民营坐落在山丘和松散的土壤上,极易受到降雨引发的山体滑坡的影响。值得注意的是,2017 年 6 月,同一地区的山体滑坡造成至少 160 人死亡。从这个角度来看,该研究旨在为 CBD 的罗兴亚难民及其收容社区开发局部滑坡预警系统 (EWS)。一种结合滑坡清单和敏感性图、降雨阈值和基于网络的动态警报系统的新方法,通过应用先进的地理信息技术,引入了滑坡预警系统(EWS)。结果表明,由于 2017 年罗兴亚人的涌入,大约 5,800 公顷的林地覆盖消失了。通过山坡切割和坡度改造引起的土地覆盖变化,以及无计划的城市化是坡体崩塌的主要原因,连续 5 天的 95-220 毫米降雨量可能会在高敏感地区引发山体滑坡。EWS 将支持地方当局和国际组织在人道主义背景下减少灾害风险和从山体滑坡中拯救生命。图形概要 由于 2017 年罗兴亚人的涌入,800 公顷的林地消失了。通过山坡切割和坡度改造引起的土地覆盖变化,以及无计划的城市化是坡体崩塌的主要原因,连续 5 天的 95-220 毫米降雨量可能会在高敏感地区引发山体滑坡。EWS 将支持地方当局和国际组织在人道主义背景下减少灾害风险和从山体滑坡中拯救生命。图形概要 由于 2017 年罗兴亚人的涌入,800 公顷的林地消失了。通过山坡切割和坡度改造引起的土地覆盖变化,以及无计划的城市化是坡体崩塌的主要原因,连续 5 天的 95-220 毫米降雨量可能会在高敏感地区引发山体滑坡。EWS 将支持地方当局和国际组织在人道主义背景下减少灾害风险和从山体滑坡中拯救生命。图形概要 EWS 将支持地方当局和国际组织在人道主义背景下减少灾害风险和从山体滑坡中拯救生命。图形概要 EWS 将支持地方当局和国际组织在人道主义背景下减少灾害风险和从山体滑坡中拯救生命。图形概要
更新日期:2020-01-01
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