Magma flux at Okmok Volcano, Alaska, from a joint inversion of continuous GPS, campaign GPS, and interferometric synthetic aperture radar
Magma flux at Okmok Volcano, Alaska, from a joint inversion of continuous GPS, campaign GPS, and interferometric synthetic aperture radar
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DOI：
10.1029/2010jb007577
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发表时间：
2010-12-01
影响因子：
3.9
通讯作者：
Freymueller, Jeffrey T.
中科院分区：
文献类型：
--
作者：
Biggs, Juliet;Lu, Zhong;Freymueller, Jeffrey T.
火山变形测量通常使用卫星大地测量技术，包括干涉合成孔径雷达（干涉合成孔径雷达）、活动GPS和连续GPS。每个系统的空间和时间采样的差异意味着从每个数据集确定源参数的最合适的反演方案是不同的。大多数研究要么比较独立反演的结果，要么对数据集进行二次抽样，以获得最低公因子。目前尚不清楚解的差异是否反映了源行为的差异、测量偏差的差异或反演技术的差异。在这里，我们开发了一个单一的反演程序，捕捉每个系统的好处，特别是每天采样的连续GPS和干涉合成孔径雷达的高空间分辨率。阿拉斯加的奥克莫克火山是进行这种测试的理想目标，因为一个长系列（
Volcano deformation is usually measured using satellite geodetic techniques including interferometric synthetic aperture radar (InSAR), campaign GPS, and continuous GPS. Differences in the spatial and temporal sampling of each system mean that most appropriate inversion scheme to determine the source parameters from each data set is different. Most studies either compare results from independent inversions or subsample the data sets to the lowest common factor. It is unclear whether differences in the solution reflect differences in source behavior, differences in measurement bias, or differences in inversion technique. Here we develop a single inversion procedure that captures the benefits of each system, especially the daily sampling of continuous GPS and the high spatial resolution of InSAR. Okmok Volcano, Alaska, is an ideal target for such a test because a long series (