The direct use of radar satellites for event-specific flood risk mapping

The direct use of radar satellites for event-specific flood risk mapping
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直接使用雷达卫星进行特定事件的洪水风险测绘

DOI:
10.1080/01431160903486685
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发表时间:
2010
影响因子:
2.3
通讯作者:
Schumann G
Schumann G
中科院分区:
工程技术4区
文献类型:
--
作者:
Schumann G

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卫星对 2006 年 12 月 12 日威尔士(英国)迪伊河洪水事件的近乎同步捕获数据被用来说明开发独立星载洪水风险测绘技术的潜力。 ERS-2 和 ENVISAT 卫星均在接近洪水高峰时记录了这一事件,且相隔仅 28 分钟。这一独特的机会可以为洪水淹没研究创建非常罕见但极其有用的观测数据集。这封信说明了如何使用这套独特的星载雷达图像来快速绘制洪水风险图。根据广泛应用的图像处理技术的聚合对洪泛区的合理观测,生成了特定事件的加权灾害图。通过在地理信息系统 (GIS) 环境中将多算法集成图与脆弱性加权土地覆盖矢量数据融合,可以将该地图进一步增强为特定事件的模糊洪水风险图。所提出的技术相当灵活,并产生了可直接用于洪水管理的潜在有用的数据集。
A near-simultaneous satellite acquisition of a flood event on 12 December 2006 on the Dee River in Wales (UK) is used to illustrate the potential to develop standalone space-borne flood risk mapping techniques. Both the ERS-2 and ENVISAT satellites recorded the event close to flood peak and only 28 min apart. This unique opportunity enables the creation of a very rare but extremely useful observed data set for flood inundation studies. This letter illustrates how this unique set of space-borne radar images can be used for rapid flood risk mapping. An event-specific weighted hazard map was generated based on plausible flood area observations from an aggregation of widely applied image-processing techniques. This map can be further augmented to an event-specific fuzzy flood risk map by fusing the multi-algorithm ensemble map with vulnerability-weighted land cover vector data in a geographic information system (GIS) environment. The technique presented is fairly flexible and leads to a potentially useful data set for direct use in flood management.
DOI: --
发表时间: 2005
期刊:
影响因子: --
作者:
D. Knight
通讯作者: D. Knight
DOI: 10.1002/hyp.7229
发表时间: 2009-02-28
影响因子: 3.2
作者:
Di Baldassarre, Giuliano;Schumann, Guy;Bates, Paul
通讯作者: Bates, Paul