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Characteristics of non-tectonic tremors around the Lützow-Holm Bay, East Antarctica, during 2013–2015
https://nipr.repo.nii.ac.jp/records/15603
https://nipr.repo.nii.ac.jp/records/156037e2b3797-abd3-4d49-b1b5-480e3de60cae
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2019-03-31 | |||||
タイトル | ||||||
タイトル | Characteristics of non-tectonic tremors around the Lützow-Holm Bay, East Antarctica, during 2013–2015 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Characteristics of non-tectonic tremors around the Lützow-Holm Bay, East Antarctica, during 2013–2015 | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Cryosphere | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Fast-sea-ice | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Harmonic tremor | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Microbaroms | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | MODIS | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Tanaka, Yuya
× Tanaka, Yuya× Hiramatsu, Yoshihiro× Ishihara, Yoshiaki× Kanao, Masaki |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Characteristics of non-tectonic tremors, excited mainly by the interaction within the cryosphere, were investigated using seismic waveform data of 2013–2015 recorded at broadband stations on the east coast of the Lützow-Holm Bay (LHB), East Antarctica. The tremors were classified into three types by spectral and waveform features. Type A events have long durations, typically several hours to days, with high amplitudes of spectra over 1–8 Hz. They occur dominantly in austral summers. Type B events have characteristically irregular variations in discrete dominant frequencies in spectra. Type C events are harmonic tremors with discrete dominant frequencies in spectra that vary regularly with time. Type B and C events show similar seasonal variations: they are numerous around April and less so in austral winter. Comparison of spectra between seismic waves and infrasound, together with satellite images, suggests that type A events originated from storm-induced swells near off-LHB. Source locations of type C events and satellite images suggest that type C events are likely to result from the collision/crevassing of ice blocks in fast-sea-ice in LHB. Similar seasonal variations of type B and C events imply that these two events have similar origins. | |||||
書誌情報 |
en : Polar Science 巻 19, p. 77-85, 発行日 2019-03 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18739652 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.polar.2018.11.010 | |||||
関連名称 | 10.1016/j.polar.2018.11.010 |