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Very-low-frequency electromagnetic (VLF-EM) measurements in the Schirmacheroasen area, East Antarctica
https://nipr.repo.nii.ac.jp/records/10209
https://nipr.repo.nii.ac.jp/records/10209f136c9ca-2403-4fed-960e-d9d7c146f162
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2014-10-16 | |||||
タイトル | ||||||
タイトル | Very-low-frequency electromagnetic (VLF-EM) measurements in the Schirmacheroasen area, East Antarctica | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Very-low-frequency electromagnetic (VLF-EM) measurements in the Schirmacheroasen area, East Antarctica | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Antarctica | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | VLF-EM method; Inphase | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Out-of-phase | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Fraser filtering | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Antarctica | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | VLF-EM method; Inphase | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Out-of-phase | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Fraser filtering | |||||
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 |
Gnaneshwar, P.
× Gnaneshwar, P.× Shivaji, A.× Srinivas, Y.× Jettaiah, P.× Sundararajan, N.× Gnaneshwar, P.× Shivaji, A.× Srinivas, Y.× Jettaiah, P.× Sundararajan, N. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | To assess the feasibility of the very-low-frequency electromagnetic (VLF-EM) method in the Schirmacheroasen area of East Antarctica, and to investigate its response, VLF-EM measurements were performed along four traverses. The preliminary results reveal the locations of geological boundaries and shear zones/faults, which may indicate that VLF anomalies are due to shear zones or alteration zones located along contacts between different rock types. The strength of the VLF anomaly decreases over the polar ice cap. The inphase component of the VLF anomaly, when processed and interpreted with an analytic signal approach, yields a depth range of 15-30 m, whereas Fraser and Hjelt filter analyses yield a depth range of 25-60 m. The VLF-EM responses along all four traverses, along with their interpretations, are presented here as a case study. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 東南極Schirmacher(シルマッハ)地域でのVLF-EM法適用の可能性と実際の応答を知るため、4つの測線について測定を実施した。予察的な結果は、VLF異常が地質(岩相)境界、せん断断層の存在によって生じていることを示唆している。また、VLF異常の強さが氷帽によって減衰していることもわかった。VLF異常の同相(in-phase)成分を信号解析的な手法で解釈すると15-30 mの深さに原因があることがわかるが、FraserフィルターあるいはHjeltフィルター解析で解釈すると少し深い、25-60 m深度に原因があることがわかった。本文では、4測線すべてでの結果を事例研究として紹介している。 | |||||
書誌情報 |
Polar science en : Polar science 巻 5, 号 1, p. 11-19, 発行日 2011-04 |
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出版者 | ||||||
出版者 | 国立極地研究所 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18739652 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12240481 | |||||
論文ID(NAID) | ||||||
識別子タイプ | NAID | |||||
関連識別子 | 110008426645 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://doi.org/10.1016/j.polar.2010.09.001 | |||||
関連名称 | 10.1016/j.polar.2010.09.001 |