Low-altitude remote sensing of volcanoes using an unmanned autonomous helicopter: an example of aeromagnetic observation at Izu-Oshima volcano, Japan
Low-altitude remote sensing of volcanoes using an unmanned autonomous helicopter: an example of aeromagnetic observation at Izu-Oshima volcano, Japan
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DOI：
10.1080/01431160903559770
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发表时间：
2011-03
影响因子：
3.4
通讯作者：
T. Kaneko;T. Koyama;A. Yasuda;M. Takeo;T. Yanagisawa;K. Kajiwara;Y. Honda
中科院分区：
文献类型：
--
作者：
T. Kaneko;T. Koyama;A. Yasuda;M. Takeo;T. Yanagisawa;K. Kajiwara;Y. Honda
本文报道了在日本伊豆大岛用无人驾驶自主直升机进行航磁观测的结果。安装了一个实用的观测系统，采用鸟型磁力计装置，从极低的高度对包括中央锥在内的破火山口区域的北方进行了密集观测。在详细的磁化强度分布图中，发现了喷口处的低磁化强度和破火山口底部的三排高磁化强度，前者被解释为存在高温物质（如岩浆或热岩）或管道中的空隙。后者被认为是由于固化堤坝。低磁化强度表明岩浆体（或附属岩浆房）没有检测到下面的破火山口地板。观测结果证实，使用无人驾驶自主直升机进行的航空磁力观测具有足够的火山观测性能，也可用作其他传感器的低空平台。
The results of aeromagnetic observations at Izu-Oshima, Japan using an unmanned autonomous helicopter are reported. A practical observation system was assembled, adopting a bird-type magnetometer installation, and dense observations of the northern half of the caldera area including the central cone were made from a very low altitude. In the detailed magnetization intensity mapping deduced from the collected data, low magnetization intensity at the vent and three rows of high magnetization intensity on the caldera floor were found. The former is interpreted as the presence of high-temperature materials, such as magma or hot rock, or vacant space in the conduit. The latter is considered to be due to solidified dykes. Low magnetization intensity suggesting a magma body (or subsidiary magma chamber) was not detected below the caldera floor. The observation results confirmed that aeromagnetic observation using an unmanned autonomous helicopter had sufficient performance for volcanic observations, and could also be utilized as a low-altitude platform for other sensors.