Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL072272 |
Locating tremor using stacked products of correlations | |
Li, Ka Lok1; Sadeghisorkhani, Hamzeh1; Sgattoni, Giulia1,2,3; Gudmundsson, Olafur1; Roberts, Roland1 | |
2017-04-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; Iceland; Italy |
英文摘要 | We introduce a back-projection method to locate tremor sources using products of cross-correlation envelopes of time series between seismic stations. For a given subset of n stations, we calculate the (n - 1)th-order product of cross-correlation envelopes and we stack the back-projected products over combinations of station subsets. We show that compared to existing correlation methods and for realistic signal and noise characteristics, this way of combining information can significantly reduce the effects of correlated (spurious or irrelevant signals) and uncorrelated noise. Each back-projected product constitutes an individual localized estimate of the source locations, as opposed to a hyperbola for the existing correlation techniques, assuming a uniform velocity in two dimensions. We demonstrate the method with synthetic examples and a real-data example from tremor at Katla Volcano, Iceland, in July 2011. Despite very complex near-surface structure, including strong topography and thick ice cover, the method appears to produce robust estimates of tremor location. |
英文关键词 | correlation volcanic tremor tremor location source location interferometry |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400186500022 |
WOS关键词 | VOLCANIC TREMOR ; WAVE-FIELD ; NOISE ; ICELAND ; EVENTS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27423 |
专题 | 气候变化 |
作者单位 | 1.Uppsala Univ, Dept Earth Sci, Uppsala, Sweden; 2.Univ Iceland, Inst Earth Sci, Reykjavik, Iceland; 3.Univ Bologna, Dept Geol, Bologna, Italy |
推荐引用方式 GB/T 7714 | Li, Ka Lok,Sadeghisorkhani, Hamzeh,Sgattoni, Giulia,et al. Locating tremor using stacked products of correlations[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(7). |
APA | Li, Ka Lok,Sadeghisorkhani, Hamzeh,Sgattoni, Giulia,Gudmundsson, Olafur,&Roberts, Roland.(2017).Locating tremor using stacked products of correlations.GEOPHYSICAL RESEARCH LETTERS,44(7). |
MLA | Li, Ka Lok,et al."Locating tremor using stacked products of correlations".GEOPHYSICAL RESEARCH LETTERS 44.7(2017). |
条目包含的文件 | 条目无相关文件。 |
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