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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Active mud volcanism observed with Landsat 7 ETM+
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Active mud volcanism observed with Landsat 7 ETM+

机译：使用Landsat 7 ETM +观测到的活跃泥火山活动

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摘要

Mud volcanoes are relatively small spatter cones that erupt water-laden mud and gases, and occur throughout the world. For many mud volcanoes, the eruption of warm mud (10-40℃) can be detected with high-resolution thermal satellite imagery. We demonstrate the utility of Landsat 7 Enhanced Thematic Mapper Plus (ETM+) imagery for thermal monitoring of active mud volcanism. We constrain the temperature and area of active mud discharge and estimate surface heat flux for two isolated mud volcanoes in the Copper River Basin, Alaska using Band 6 (10.4-12.5 μm). The heat flux results span a wide range due to uncertainties in the environmental conditions at the time of image acquisition, but can be constrained to be less than 0.24 MW for each of the two mud volcanoes considering previously published field measurements. With this higher-resolution Band 6 on the ETM+ sensor, as well as the high-resolution thermal bands on the ASTER sensor, reliable monitoring of mud volcanism on this scale is possible for the first time.
机译：泥火山是相对较小的飞溅锥，它们喷发着充满水的泥浆和气体，并且遍布世界各地。对于许多泥火山，可以通过高分辨率的热卫星图像检测出暖泥（10-40℃）的喷发。我们演示了Landsat 7增强型专题制图仪增强版（ETM +）图像对活动泥火山热监测的实用性。我们限制活动泥浆排放的温度和面积，并使用波段6（10.4-12.5μm）估算阿拉斯加铜河盆地两个孤立的泥火山的表面热通量。由于图像采集时环境条件的不确定性，热通量结果的范围很广，但考虑到先前公布的现场测量结果，两个泥火山中的每个火山的热通量结果都可以限制为小于0.24 MW。借助ETM +传感器上的高分辨率6带以及ASTER传感器上的高分辨率热带，首次可以在此规模上可靠地监测泥火山活动。

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