書誌事項
- タイトル別名
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- Surface displacements derived from the Northern Nagano Prefecture earthquake in November 22, 2014 detected by InSAR
- カンショウ SAR デ トラエタ 2014ネン 11ガツ 22ニチ ナガノケン ホクブ オ シンゲン ト スル ジシン ニ トモナウ チヒョウ ヘンイ
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説明
<p>Inland earthquake (Mj 6.7) occurred around Northern Nagano Prefecture in November 22, 2014. Surface ruptures emerged over 9 kilometers or more length intermittently along Kamishiro fault derived from this earthquake. Geospatial Information Authority of Japan (GSI of Japan) implemented the interferometric SAR (InSAR) analysis by using PALSAR-2/ALOS-2 data in the earthquake area after the earthquake. In Addition, GSI of Japan elucidated the crustal deformation induced by the main shock and aftershock activity of the earthquake (GSI of Japan, 2015a). There were some discontinuities of interference phase in the InSAR imageries. We performed a field survey in northern Hakuba Village and Otari Village while referring to the discontinuities of interference phase in the InSAR imageries. At that time, surface displacement wasnʼt reported in Otari Village.</p><p>As a result, the appearance position of surface ruptures matched the discontinuities of interference phase on the InSAR imagery in the northern Hakuba Village. Then, we discovered some surface displacements with relative east side uplifting and E-W shortening at the Dorosaki section and west side of JR Chikuni Station in Otari Village. These surface displacements appeared along the discontinuities of interference phase in the InSAR imageries. It is probable that these surface displacements were caused by activity of Himekawa fault. However, it is not clear whether there are surface rupture. These results indicate that InSAR imagery by using PALSAR-2/ALOS-2 data is able to detect surface displacement like surface rupture induced by earthquake. Moreover, InSAR imagery is useful to survey surface displacement widely.</p>
収録刊行物
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- 活断層研究
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活断層研究 2015 (43), 69-82, 2015
一般社団法人 日本活断層学会
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詳細情報 詳細情報について
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- CRID
- 1390282680734052352
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- NII論文ID
- 130006135438
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- NII書誌ID
- AN10157356
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- ISSN
- 21865337
- 09181024
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- NDL書誌ID
- 027051839
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可