Multisensor Satellite Monitoring of the 2011 Puyehue-Cordon Caulle Eruption
Multisensor Satellite Monitoring of the 2011 Puyehue-Cordon Caulle Eruption
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DOI：
10.1109/jstars.2014.2320638
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发表时间：
2014-07-01
影响因子：
5.5
通讯作者：
Piedra, Juan
中科院分区：
文献类型：
--
作者：
Bignami, Christian;Corradini, Stefano;Piedra, Juan
本文介绍了利用热红外（TIR）到微波（MW）光谱范围的多传感器遥感仪器对智利Puyehue火山喷发进行监测的主要成果。利用合成孔径雷达（SAR）和中分辨率成像光谱仪（MODIS）观测了火山喷发的演变过程，捕捉到了火山大厦的变形、熔岩的延伸以及喷发出的火山灰和气体的信息。一方面，将SAR干涉测量法应用于ENVISAT-ASAR数据，可以通过每月采样来估计火山爆发前和随后的收缩之前发生的变形。另一方面，结合使用cosmos - skymed x波段SAR和ENVISAT-ASAR拍摄的高分辨率（VHR）图像，我们能够在喷发最激烈的阶段跟踪熔岩沉积。此外，联合利用SAR和光学MODIS图像可以在多云的天空条件下进行灰探测。最后，这两种类型的传感器收集的信息可以突出火山喷发的一些火山学特征，以及地表变形与火山喷出的火山灰和气体量之间的关系。
This paper shows the main outcomes of the Puyehue volcano (Chile) eruption monitoring by means of multisensor remote sensing instruments working from thermal infrared (TIR) to microwave (MW) spectral range. Thanks to the use of Synthetic Aperture Radar (SAR) and the Moderate Resolution Imaging Spectroradiometer (MODIS), the eruption evolution was observed, capturing the deformations of volcano edifice, the lava extension, as well as the information on ash and gas emitted. On the one hand, SAR Interferometry applied to ENVISAT-ASAR data allowed the estimation of the deformation occurred just before the beginning of the eruption and the subsequent deflation, with monthly sampling. On the other hand, with the combined use of the very high-resolution (VHR) images taken by COSMO-SkyMed X-band SAR, and ENVISAT-ASAR ones, we were able to follow the lava deposition during the most intense phase of the eruption. Additionally, the joined exploitation of SAR and optical MODIS images allowed ash detection, also in cloudy sky conditions. Finally, the information gathered by both types of sensors allowed to highlight some volcanological features of the eruption and the relationship between surface deformation and the amount of ash and gases emitted by the volcano.