Detection of Lagrangian displacements induced in seismic source regions and its implementation for land conservation

震源区拉格朗日位移检测及其在土地保护中的实现

• 批准号: 23246087
• 负责人: KONAGAI Kazuo
• 金额: $ 31.03万
• 依托单位: Yokohama National University (2013)The University of Tokyo (2011-2012)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23246087/
• 关键词: ラグランジアン変位; 国土保全; 地形変形; 地震断層; 地震防災; 液状化

Strong ground motion records are often missing or very sparsely available especially in the developing countries, discouraging all attempts for rational rehabilitation. Something that should not be forgotten in talking about rehabilitation is that a large earthquake often causes long lasting geo-technical problems, in which terrain changes are to be thoroughly studied. A method is presented to extract Lagrangian ground displacements from an available set of aerial/satellite data capturing sub-aerial topography. Its application to the Mid-Niigata Prefecture Earthquake, a well recorded and documented seismic event, has shown good correlation with the field measurements and/or observations. Also the method was used to prepare precise map of soil subsidence for Tokyo bay shore areas liquefied in the March 11th, 2011 off the Pacific Coast of Tohoku Earthquake.

强地面运动记录往往缺失或非常稀少，特别是在发展中国家，阻碍了所有合理恢复的尝试。在谈论重建时不应该忘记的是，大地震往往会造成长期的地质技术问题，其中地形变化需要进行彻底的研究。提出了一种方法来提取拉格朗日地面位移从一组可用的航空/卫星数据捕获亚空中地形。新潟县中部地震是一个有充分记录和文献记载的地震事件，它的应用表明与现场测量和/或观测有很好的相关性。此外，该方法用于制作2011年3月11日东北太平洋沿岸地震中液化的东京湾岸地区的土壤沉降精确图。

项目成果

VERIFICATION OF ACCURACY OF LIQUEFIED SOIL SUBSIDENCE MAP OF URAYASU FROM AIR-BORNE LIDAR SURVEY AND DISPLACEMENT-INFLICTED DAMAGE TO STRUCTURES AND THEIR SUBSOILS

通过机载激光雷达测量验证浦安液化土沉降图的准确性以及对结构及其底土造成的位移损坏

• DOI: 10.2208/jscejseee.68.i_1278
• 发表时间: 2012
• 期刊: Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering & Earthquake Engineering (SE/EE))
• 作者: 朝倉 徹;須山 翔太;小長井 一男;江藤 稚佳子;渋谷 研一
• 通讯作者: 渋谷 研一

Surface fault rupture through a ridge in an aftershock of the 2011 Tohoku Earthquake

2011 年东北地震余震中，地表断层穿过山脊破裂

• 发表时间: 2013
• 期刊: Geotechnical Special Publication, ASCE
• 作者: Oettle;N.K.;Bray;J.D.;Konagai;K.;Kelson;K
• 通讯作者: K

Measurement of debris mass changes and assessment of the dam-break flood potential of earthquake-triggered Hattian landslide dam

• DOI: 10.1007/s10346-010-0241-9
• 发表时间: 2011-06
• 期刊: Landslides
• 影响因子: 6.7
• 作者: A. Sattar;K. Konagai;T. Kiyota;T. Ikeda;J. Johansson

Maps of soil subsidence

土壤沉降图

Soil subsidence map of the Tokyo Bay area liquefied in the March 11th Great East Japan Earthquake

3月11日东日本大地震液化东京湾地区土壤沉降图

• 发表时间: 2012
• 作者: Konagai K.;Asakura T.;Suyama S.;Kyokawa H.;Kiyota T.;Eto C.;Shibuya K.
• 通讯作者: Shibuya K.