Thermal distributions of hot volcanic surfaces constrained using three infrared bands of remote sensing data
Thermal distributions of hot volcanic surfaces constrained using three infrared bands of remote sensing data
复制标题
使用三个红外波段遥感数据约束热火山表面的热分布
DOI：
--
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
C. Oppenheimer
中科院分区：
文献类型：
--
作者：
C. Oppenheimer
红外遥感提供了一种热火山特征的辐射测量手段。在此之前，两个光谱带的测量已经结合起来解决简单的熔岩表面温度的2分量模型。然而，像素尺寸通常超过熔岩体的宽度。在这种情况下，三分量模型更真实。在这里，一个程序来解决这样一个模型从三个红外观测。然后证明使用专题制图模拟器的数据记录在埃特纳火山，意大利，在1991年。通过以这种方式约束三个不同热分量的温度和像素填充分数，可以获得对辐射发射度的改进的估计。所述技术可应用于火山和其他热点（包括火灾）的卫星数据。
Infrared remote sensing provides a means for radiometry of hot volcanic features. Previously, two spectral band measurements have been combined to solve simple 2-component models of lava surface temperatures. However, pixel dimensions often exceed the widths of lava bodies. In such cases, 3-component models are more realistic. Here, a procedure for solving such a model from three infrared observations is presented. It is then demonstrated using Thematic Mapper Simulator data recorded over Mount Etna, Italy, in 1991. By constraining temperatures and pixel-filling fractions of the three different thermal components in this way, improved estimates of radiant emittance can be obtained. The techniques described could be applied to satellite data of volcanic, and other, hot spots (including fires).