The combined use of PSInSAR and UAV photogrammetry techniques for the analysis of the kinematics of a coastal landslide affecting an urban area (SE Spain)
The combined use of PSInSAR and UAV photogrammetry techniques for the analysis of the kinematics of a coastal landslide affecting an urban area (SE Spain)
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DOI：
10.1007/s10346-016-0723-5
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发表时间：
2017-04
期刊：
影响因子：
6.7
通讯作者：
R. M. Mateos;J. Azañón;Francisco J. Roldán;D. Notti;V. Pérez-Peña;J. Galve;José Luis Pérez-García;Carlos Colomo;J. M. Gómez-López;Oriol Montserrat;Nùria Devantèry;Francisco Lamas-Fernández;Francisca Fernández-Chacón
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文献类型：
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作者：
R. M. Mateos;J. Azañón;Francisco J. Roldán;D. Notti;V. Pérez-Peña;J. Galve;José Luis Pérez-García;Carlos Colomo;J. M. Gómez-López;Oriol Montserrat;Nùria Devantèry;Francisco Lamas-Fernández;Francisca Fernández-Chacón
在目前的工作中，情况下的卡门德尔马尔度假村（格拉纳达，西班牙）。它可以被认为是地中海沿岸与城市发展有关的严重疾病的最极端的例子之一。该度假村有416个住宅，部分建在一个深埋的滑坡上，该滑坡影响了由黑色石墨片岩组成的软地层。2015年11月，市理事会正式宣布度假村进入紧急状态，24处住宅已被疏散。我们使用了两种遥感技术来监测滑坡，目的是识别和测量各种位移率（从mm/年到m/年）：（1）PSInSAR，利用2003年5月至2009年12月获得的25幅ENVISAT SAR图像，以及（2）摄影测量，考虑到2015年6月和2016年1月进行的两次无人机（UAV）飞行的输出以及2008年常规飞行的过时照片。场地地质、PS变形测量数据、建筑物位移、降雨和观察到的破坏及其时间发生之间的关系，可以更好地了解滑坡运动学以及不稳定性的时空演变。结果表明，在8年的建筑位移高达1.92米，一个明确的岩性控制的空间分布的损害和最具破坏性的事件和水补给事件（多雨事件和游泳池和供水网络泄漏）之间的密切关系。这项工作强调了将地质灾害纳入城市规划的必要性，包括预测、准备和预防这类现象的政策。
In the present work, the case of the Cármenes del Mar resort (Granada, Spain) is shown. It can be considered one of the most extreme examples on the Mediterranean coast of severe pathologies associated with urban development on coastal landslides. The resort, with 416 dwellings, was partially built on a deep-seated landslide which affects a soft formation composed of dark graphite schists. In November 2015, the City Council officially declared a state of emergency in the resort and 24 dwellings have already been evacuated. We have used two remote sensing techniques to monitor the landslide with the aim of identifying and measuring a wide range of displacements rates (from mm/year to m/year): (1) PSInSAR, exploiting 25 ENVISAT SAR images acquired from May 2003 to December 2009, and (2) photogrammetry, considering the output from two Unmanned Aerial Vehicle (UAV) flights made in June 2015 and January 2016 and the outdated photos from a conventional flight in 2008. The relationship between the geology of the site, data from PS deformation measurements, building displacements, rainfall and damage observed and their temporal occurrence allows a better understanding of the landslide kinematics and both the spatial and temporal evolution of the instability. Results indicate building displacements of up to 1.92 m in 8 years, a clear lithological control in the spatial distribution of damage and a close relationship between the most damaging events and water recharge episodes (rainy events and leaks from swimming pools and the water supply network). This work emphasises the need to incorporate geohazards into urban planning, including policies to predict, prepare for and prevent this type of phenomenon.