Unsupervised Deep Clustering of Seismic Data: Monitoring the Ross Ice Shelf, Antarctica
Unsupervised Deep Clustering of Seismic Data: Monitoring the Ross Ice Shelf, Antarctica
复制标题
无监督地震数据深度聚类:监测南极洲罗斯冰架
DOI:
10.1029/2021jb021716
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Bromirski, Peter D.
中科院分区:
文献类型:
--
作者:
Jenkins, II, William F.;Gerstoft, Peter;Bianco, Michael J.;Bromirski, Peter D.
Advances in machine learning (ML) techniques and computational capacity have yielded state‐of‐the‐art methodologies for processing, sorting, and analyzing large seismic data sets. In this study, we consider an application of ML for automatically identifying dominant types of impulsive seismicity contained in observations from a 34‐station broadband seismic array deployed on the Ross Ice Shelf (RIS), Antarctica from 2014 to 2017. The RIS seismic data contain signals and noise generated by many glaciological processes that are useful for monitoring the integrity and dynamics of ice shelves. Deep clustering was employed to efficiently investigate these signals. Deep clustering automatically groups signals into hypothetical classes without the need for manual labeling, allowing for the comparison of their signal characteristics and spatial and temporal distribution with potential source mechanisms. The method uses spectrograms as input and encodes their salient features into a lower‐dimensional latent representation using an autoencoder, a type of deep neural network. For comparison, two clustering methods are applied to the latent data: a Gaussian mixture model (GMM) and deep embedded clustering (DEC). Eight classes of dominant seismic signals were identified and compared with environmental data such as temperature, wind speed, tides, and sea ice concentration. The greatest seismicity levels occurred at the RIS front during the 2016 El Niño summer, and near grounding zones near the front throughout the deployment. We demonstrate the spatial and temporal association of certain classes of seismicity with seasonal changes at the RIS front, and with tidally driven seismicity at Roosevelt Island.
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影响因子:
5.2
作者:
Chen, Z.;Bromirski, P. D.;Gerstoft, P.;Stephen, R. A.;Lee, W. S.;Yun, S.;Olinger, S. D.;Aster, R. C.;Wiens, D. A.;Nyblade, A. A.
通讯作者:
Nyblade, A. A.
影响因子:
5.2
作者:
Chaput, J.;Aster, R. C.;McGrath, D.;Baker, M.;Anthony, R. E.;Gerstoft, P.;Bromirski, P.;Nyblade, A.;Stephen, R. A.;Wiens, D. A.
通讯作者:
Wiens, D. A.
影响因子:
3.4
作者:
Chen, Zhao;Bromirski, Peter D.;Nyblade, Andrew A.
通讯作者:
Nyblade, Andrew A.
影响因子:
3.4
作者:
Baker, Michael G.;Aster, Richard C.;Wiens, Douglas A.;Nyblade, Andrew;Bromirski, Peter D.;Gerstoft, Peter;Stephen, Ralph A.
通讯作者:
Stephen, Ralph A.
DOI:
--
发表时间:
2012
期刊:
International Conference on Recent Advances in Information Technology
影响因子:
--
作者:
T. A. Reddy;K. R. Devi;S. Gangashetty
通讯作者:
S. Gangashetty