SGER: Collection and Processing of Satellite Data from the 2003 Tokachi-Oki (Hokkaido) Japan Earthquake for Determination of Permanent Ground Deformations

SGER：收集和处理 2003 年日本十胜冲（北海道）地震的卫星数据以确定永久地面变形

• 批准号: 0405706
• 负责人: Jean Pierre Bardet
• 金额: $ 3.04万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-12-15 至 2005-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0405706&HistoricalAwards=false
• 关键词: SGER; Collection; Processing; Satellite; Data

The 26 September 2003 Tokachi-oki earthquake (Mw = 8.3) in Hokkaido, Japan, caused significant soil liquefaction, ground lateral spreading, and slope failures along the eastern coast of Hokkaido. The ground accelerations exceeded 0.5 g at 100 miles from the hypocenter. The objectives of this SGER (Small Grants for Exploratory Research) project are to collect and process satellite data in order to determine the extent and magnitude of permanent ground deformations resulting from the compressibility and failure of soil deposits. It involves collaboration between researchers at the University of Southern California and the University of Texas at Austin, and will be carried out in collaboration with researchers at Kyoto University and Waseda University in Japan.The satellite data to be collected includes synthetic aperture radar (SAR) images and high-resolution optical satellite images. The collected data will be processed for (1) mapping the location and magnitude of ground deformations over large geographic areas using SAR interferometry and interpretation of optical satellite images; (2) differentiating ground deformations (lateral and vertical) induced by local soil conditions (e.g., liquefaction) and overall tectonic processes; and (3) developing a comprehensive GIS model of field observations and ground deformations. This investigation of large-scale geotechnical features will complement the field observations from the post-earthquake reconnaissance work of U.S. and Japanese investigators. The utilization of satellite data has the potential to provide unique and complementary information about large-scale ground deformations and their associated damage after earthquakes. It is expected that this research will yield novel results in geotechnical engineering that will become part of future developments and improvements in current remote sensing systems.

2003年9月26日发生在日本北海道的十胜冲地震（Mw = 8.3）造成了北海道东海岸严重的土壤液化、地面侧向扩展和斜坡破坏。 在距震源100英里处，地面加速度超过0.5 g。 该SGER（探索性研究小额赠款）项目的目标是收集和处理卫星数据，以确定土壤沉积物的压缩性和破坏造成的永久性地面变形的范围和幅度。 该项目涉及南加州大学和得克萨斯大学奥斯汀分校的研究人员之间的合作，并将与日本京都大学和早稻田大学的研究人员合作进行，收集的卫星数据包括合成孔径雷达图像和高分辨率光学卫星图像。 将对收集的数据进行处理，以便：（1）利用合成孔径雷达干涉测量法和光学卫星图像的判读，绘制大面积地理区域内地面变形的位置和幅度;（2）区分由当地土壤条件（例如，液化）和整体构造过程;（3）开发一个全面的GIS模型的现场观测和地面变形。 对大规模岩土特征的调查将补充美国和日本调查人员在地震后勘察工作中的实地观察。 利用卫星数据有可能提供关于地震后大规模地面变形及其相关损害的独特和补充信息。 预计这项研究将产生新的结果，岩土工程，将成为未来的发展和改进，目前的遥感系统的一部分。