Use of a portable topographic mapping millimetre wave radar at an active lava flow
Use of a portable topographic mapping millimetre wave radar at an active lava flow
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DOI：
10.1029/2005gl025005
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发表时间：
2006-02-01
影响因子：
5.2
通讯作者：
Pinkerton, H
中科院分区：
文献类型：
--
作者：
Macfarlane, DG;Wadge, G;Pinkerton, H
一种地面毫米波雷达，AVTIS（全天候火山地形成像传感器），已经开发用于地形监测。该仪器是便携式的，能够在云层和夜间测量大约7公里的范围。2005年4月和5月，AVTIS被部署在哥斯达黎加的阿雷纳尔火山，以确定与熔岩流推进有关的地形变化。这是首次报道将毫米波雷达技术应用于熔岩通量率的测量。在约3 km的观测距离上获得了3组8 d的气流地形数据，在此期间，检测到气流锋向前推进了约200 m。数据集之间的地形差异表明，流动厚度接近10 m，致密岩石等效熔岩通量接近0.20 +/- 0.08 m(3) s（-1）。
A ground-based millimetre wave radar, AVTIS (All-weather Volcano Topography Imaging Sensor), has been developed for topographic monitoring. The instrument is portable and capable of measurements over ranges up to similar to 7 km through cloud and at night. In April and May 2005, AVTIS was deployed at Arenal Volcano, Costa Rica, in order to determine topographic changes associated with the advance of a lava flow. This is the first reported application of mm-wave radar technology to the measurement of lava flux rates. Three topographic data sets of the flow were acquired from observation distances of similar to 3 km over an eight day period, during which the flow front was detected to have advanced similar to 200 m. Topographic differences between the data sets indicated a flow thickness of similar to 10 m, and a dense rock equivalent lava flux of similar to 0.20 +/- 0.08 m(3) s(-1).