講演名 | 2017-10-04 GPR measurements to assess the characteristics of active faults in Mongolia Maksim Bano(Strasbourg Univ.), Jean-Remi Dujardin(Strasbourg Univ.), Antoine Schlupp(Strasbourg Univ.), Nyambayar Tsend-Ayush(NRIAG), Ulziibat Munkhuu(NRIAG), |
---|---|
PDFダウンロードページ | PDFダウンロードページへ |
抄録(和) | In this paper we present the GPR results obtained on Emeelt and Songino faults in the vicinity of Ulaanbaatar, Mongolia. The objective is to understand the geometry, type of displacements and amplitude of these faults. The 2D and pseudo-3D GPR profiles are measured by using the 50, 250 and 500 MHz antennas. An appropriate processing of the GPR data, including the topographic migration, allows us to bring out indirect characteristics of these faults. The 500 MHz GPR profiles show a good consistency with the trenches observation, dug next to the pseudo-3D surveys on Emeelt fault. The 3D GPR imaging of a paleo-channel crossed by the Emeelt fault allows us to estimate its lateral displacement (of about 2 m) associated to its activity. It is consistent with a right lateral strike-slip displacement induced by an earthquake of magnitude around 7 or several of magnitude at least around 6. The 250 MHz GPR images of Songino fault show clear vertical apparent displacement of 1.3 m of radar reflections but it does not correspond to real displacement, as the fault is also associated with a strike slip component. GPR images indicate the presence of sedimentary deposits, potentially datable and affected by previous earthquakes. |
抄録(英) | In this paper we present the GPR results obtained on Emeelt and Songino faults in the vicinity of Ulaanbaatar, Mongolia. The objective is to understand the geometry, type of displacements and amplitude of these faults. The 2D and pseudo-3D GPR profiles are measured by using the 50, 250 and 500 MHz antennas. An appropriate processing of the GPR data, including the topographic migration, allows us to bring out indirect characteristics of these faults. The 500 MHz GPR profiles show a good consistency with the trenches observation, dug next to the pseudo-3D surveys on Emeelt fault. The 3D GPR imaging of a paleo-channel crossed by the Emeelt fault allows us to estimate its lateral displacement (of about 2 m) associated to its activity. It is consistent with a right lateral strike-slip displacement induced by an earthquake of magnitude around 7 or several of magnitude at least around 6. The 250 MHz GPR images of Songino fault show clear vertical apparent displacement of 1.3 m of radar reflections but it does not correspond to real displacement, as the fault is also associated with a strike slip component. GPR images indicate the presence of sedimentary deposits, potentially datable and affected by previous earthquakes. |
キーワード(和) | GPR / active faults / trenches / seismic hazard / Ulaanbaatar / Mongolia |
キーワード(英) | GPR / active faults / trenches / seismic hazard / Ulaanbaatar / Mongolia |
資料番号 | SANE2017-43 |
発行日 | 2017-09-27 (SANE) |
研究会情報 | |
研究会 | SANE |
---|---|
開催期間 | 2017/10/4(から2日開催) |
開催地(和) | 日仏会館(東京) |
開催地(英) | Maison franco - japonaise (Tokyo) |
テーマ(和) | 地下電磁計測ワークショップ |
テーマ(英) | The 14th workshop on subsurface electromagnetic measurement |
委員長氏名(和) | 福島 荘之介(電子航法研) |
委員長氏名(英) | Sonosuke Fukushima(ENRI) |
副委員長氏名(和) | 森山 敏文(長崎大) / 灘井 章嗣(NICT) |
副委員長氏名(英) | Toshifumi Moriyama(Nagasaki Univ.) / Akitsugu Nadai(NICT) |
幹事氏名(和) | 小幡 康(三菱電機) / 毛塚 敦(電子航法研) |
幹事氏名(英) | Yasushi Obata(Mitsubishi Electric) / Atsushi Kezuka(ENRI) |
幹事補佐氏名(和) | 秋田 学(電通大) / 夏秋 嶺(東大) |
幹事補佐氏名(英) | Manabu Akita(Univ. of Electro-Comm.) / Ryo Natsuaki(Univ. of Tokyo) |
講演論文情報詳細 | |
申込み研究会 | Technical Committee on Space, Aeronautical and Navigational Electronics |
---|---|
本文の言語 | ENG |
タイトル(和) | |
サブタイトル(和) | |
タイトル(英) | GPR measurements to assess the characteristics of active faults in Mongolia |
サブタイトル(和) | GPR and active faults in Mongolia |
キーワード(1)(和/英) | GPR / GPR |
キーワード(2)(和/英) | active faults / active faults |
キーワード(3)(和/英) | trenches / trenches |
キーワード(4)(和/英) | seismic hazard / seismic hazard |
キーワード(5)(和/英) | Ulaanbaatar / Ulaanbaatar |
キーワード(6)(和/英) | Mongolia / Mongolia |
第 1 著者 氏名(和/英) | Maksim Bano / Maksim Bano |
第 1 著者 所属(和/英) | Strasbourg University(略称:Strasbourg Univ.) Strasbourg University(略称:Strasbourg Univ.) |
第 2 著者 氏名(和/英) | Jean-Remi Dujardin / Jean-Remi Dujardin |
第 2 著者 所属(和/英) | Strasbourg University(略称:Strasbourg Univ.) Strasbourg University(略称:Strasbourg Univ.) |
第 3 著者 氏名(和/英) | Antoine Schlupp / Antoine Schlupp |
第 3 著者 所属(和/英) | Strasbourg University(略称:Strasbourg Univ.) Strasbourg University(略称:Strasbourg Univ.) |
第 4 著者 氏名(和/英) | Nyambayar Tsend-Ayush / Nyambayar Tsend-Ayush |
第 4 著者 所属(和/英) | Institute of Astronomy and Geophysics(略称:NRIAG) Institute of Astronomy and Geophysics(略称:NRIAG) |
第 5 著者 氏名(和/英) | Ulziibat Munkhuu / Ulziibat Munkhuu |
第 5 著者 所属(和/英) | Institute of Astronomy and Geophysics(略称:NRIAG) Institute of Astronomy and Geophysics(略称:NRIAG) |
発表年月日 | 2017-10-04 |
資料番号 | SANE2017-43 |
巻番号(vol) | vol.117 |
号番号(no) | SANE-222 |
ページ範囲 | pp.1-6(SANE), |
ページ数 | 6 |
発行日 | 2017-09-27 (SANE) |