Volcanic ash retrieval at Mt. Etna using AVHRR and MODIS data
Volcanic ash retrieval at Mt. Etna using AVHRR and MODIS data
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使用 AVHRR 和 MODIS 数据反演埃特纳火山火山灰
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
M. Buongiorno
中科院分区：
文献类型：
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作者：
C. Spinetti;S. Corradini;M. Buongiorno
火山灰探测程序的基础是亮度温差算法，使用多谱段卫星传感器的11和12微米热红外通道。Mie程序已被包括在反演过程中，以计算灰的光学性质的灰微物理特性。模拟采用MODTRAN辐射传输模型。NASA-Modis和Noaa-Avhrr对Mt.对2006年11月发生的埃特纳喷发羽流进行了分析，反演了羽流光学厚度、粒子有效半径和粒径分布。
The volcanic ash detection procedures are based on Brightness Temperature Difference (BTD) algorithm using the thermal infrared channels centred around 11 and 12 microns of a multispectral satellite sensor. The Mie code has been is included in the retrieval procedure to compute the ash optical properties from the ash microphysical characteristics. The simulations has been carried out using MODTRAN radiative transfer model. The Nasa-Modis and the Noaa-Avhrr measurements of Mt. Etna eruptive plume occurred in November 2006 have been analyzed to retrieve the plume optical thickness, the particle effective radius and the size distribution.