The SO2 camera:: A simple, fast and cheap method for ground-based imaging of SO2 in volcanic plumes
The SO2 camera:: A simple, fast and cheap method for ground-based imaging of SO2 in volcanic plumes
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DOI：
10.1029/2006gl027916
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发表时间：
2006-12-19
影响因子：
5.2
通讯作者：
Burton, Mike
中科院分区：
文献类型：
--
作者：
Mori, Toshiya;Burton, Mike
在活火山上广泛监测SO2通量，因为它为隐藏的地下岩浆动力学提供了一个窗口。在这里，我们提出了一种新的方法来SO2通量监测使用紫外成像的火山羽通过精心选择的过滤器，以产生图像的SO2柱量。SO2相机预示着我们以前所未有的频率（2 Hz）和前所未有的精度测量SO2通量的能力取得了突破，这要归功于应用相关技术直接从图像中确定风速以及同时测量整个剖面的能力。在本文中，我们详细介绍了商业上可用的件所需的SO2相机，介绍了检索计划，以确定SO2量的图像和目前的结果，在2005年11月的一场运动，日本樱岛火山。
SO2 flux is widely monitored on active volcanoes as it gives a window into the hidden, subsurface magma dynamics. We present here a new approach to SO2 flux monitoring using ultraviolet imaging of the volcanic plume through carefully chosen filters to produce images of SO2 column amount. The SO2 camera heralds a breakthrough in both our ability to measure SO2 flux at unprecedented frequencies ( 2 Hz) and at unprecedented accuracy, thanks to the application of correlation techniques to determine wind speed directly from the images and the ability to measure the whole profile simultaneously. In this paper we detail the commercially available pieces required to construct the SO2 camera, introduce a retrieval scheme to determine SO2 amounts from the images and present results from a field campaign in November 2005 on Sakurajima volcano, Japan.