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首页> 外文期刊>International journal of remote sensing >Experiences From Near-real-time Satellite-based Volcano Monitoring In Central America: Case Studies At Fuego, Guatemala
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Experiences From Near-real-time Satellite-based Volcano Monitoring In Central America: Case Studies At Fuego, Guatemala

机译：中美洲近实时基于卫星的火山监测的经验：危地马拉Fuego的案例研究

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Over the past decade, remote sensing has been used increasingly in the study of active volcanoes and their associated hazards. Ground-based remote sensing techniques, such as those aimed at the analysis of volcanic gases or fumarole temperatures, are now part of routine monitoring operations with additional satellite-based remote sensing methods. It is likely that the use of satellite-based systems will be most beneficial for volcano monitoring in developing country regions and remote areas. In such situations, an operational real-time satellite remote sensing system could provide rapid assessment of volcanic activity levels and potentially be used to derive crucial information for disaster prevention. This would allow key at-risk areas to be rapidly and appropriately targeted. An operational test of such a system has been carried out in the past 3 years in Central America, based on local reception and analysis of Advanced Very High Resolution Radiometer (AVHRR) imagery. Here we analyse the performance and data quality for recent activity of Fuego volcano (Guatemala). We assess the ability of the system to detect, quantify and monitor periods of heightened activity and consider the benefits of such information being available in near-real time to local geoscientists and for hazard mitigation. We show that the system is able to detect significant changes in volcanic activity (November and December 2004, February and December 2005). There are good comparisons for these events with large-scale monitoring systems using additional remote sensing data. This paper provides one of the few evaluations of the direct application of operational AVHRR data to volcanic hazard monitoring and disaster management in developing countries.
机译：在过去的十年中，遥感技术已越来越多地用于研究活火山及其相关危害。如今，基于地面的遥感技术，例如旨在分析火山气体或喷气孔温度的技术，已成为日常监测工作的一部分，采用了其他基于卫星的遥感方法。使用卫星系统可能对发展中国家地区和偏远地区的火山监测最有利。在这种情况下，可操作的实时卫星遥感系统可以提供对火山活动水平的快速评估，并有可能被用于获取重要的防灾信息。这将使关键的高风险区域得以迅速适当地瞄准。在过去的三年中，基于本地对超高分辨率高分辨率辐射计（AVHRR）图像的接收和分析，已经在中美洲对这种系统进行了操作测试。在这里，我们分析了Fuego火山（危地马拉）近期活动的性能和数据质量。我们评估该系统检测，量化和监视活动增加的时间段的能力，并考虑当地地质学家近实时获得此类信息的好处以及减轻危害的能力。我们显示该系统能够检测到火山活动的重大变化（2004年11月和2004年12月，2005年2月和2005年12月）。这些事件与使用附加遥感数据的大型监视系统进行了很好的比较。本文提供了将AVHRR业务数据直接应用于发展中国家火山灾害监测和灾害管理的少数评估之一。

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