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Comparing satellite based and ground based radar interferometry and field observations at the Canillo landslide (Pyrenees)

機(jī)譯:在卡尼略滑坡(比利牛斯山脈)比較衛(wèi)星和地面雷達(dá)干涉測量和現(xiàn)場觀測

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摘要

The landslide of El Forn de Canillo in the Principality of Andorra is one of the largest in the Pyrenees. In 2007 a monitoring system (boreholes equipped with inclinometers, extensometers and piezometers) was set up. Between 2010 and 2011, surface displacements were measured using differential interferometry techniques (GB-SAR and DInSAR). The interferograms of both radars have yielded mutually consistent results, compatible with the inclinometric measures. Furthermore, the observations with TerraSAR-X, with greater spatial coverage, have shown that the displacements are significantly higher in the upper part of the slope (up to 4 cm/year). Field surveys evidenced the presence of activity indicators (open tension cracks, ground disturbance and structural damages) that confirm the existence of these movements. In\udEl Forn landslide, the combined use of radar techniques with conventional instrumentation allows for a more complete and representative interpretation of the behavior of the slope.
機(jī)譯:安道爾公國的El Forn de Canillo滑坡是比利牛斯山脈中最大的滑坡之一。 2007年,建立了一個監(jiān)控系統(tǒng)(配備了測斜儀,引伸計和測壓計的鉆孔)。在2010年至2011年之間,使用差分干涉測量技術(shù)(GB-SAR和DInSAR)測量了表面位移。兩個雷達(dá)的干涉圖都產(chǎn)生了相互一致的結(jié)果,與測斜法兼容。此外,使用TerraSAR-X進(jìn)行的觀測(具有更大的空間覆蓋范圍)表明,在斜坡的上部(最高4 cm /年)位移明顯更高。現(xiàn)場調(diào)查證明活動指標(biāo)(張開裂縫,地面擾動和結(jié)構(gòu)破壞)的存在證實了這些運(yùn)動的存在。在\ uDel Forn滑坡中,雷達(dá)技術(shù)與常規(guī)儀器的結(jié)合使用可以對斜坡的行為進(jìn)行更完整和更具代表性的解釋。

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