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

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: 0404619
• 负责人: Ellen Rathje
• 金额: $ 3.01万
• 依托单位: University of Texas at Austin
• 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 2005-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0404619&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，日本北海道的Tokachi-Oki地震（MW = 8.3）引起了北北海岸东部海岸的大量土壤液化，地面横向扩散和斜坡故障。 地面加速度在距离降级器100英里处超过0.5 g。 该SGER的目标（用于探索性研究的小赠款）项目是收集和处理卫星数据，以确定由土壤沉积的可压缩性和失败导致的永久地面变形的程度和幅度。 它涉及南加州大学的研究人员与德克萨斯大学奥斯汀分校之间的合作，并将与京都大学和日本的Waseda大学合作进行。要收集的卫星数据包括合成孔径雷达（SAR）图像和高分辨率光学卫星图像。 收集的数据将用于（1）使用SAR干涉法和光学卫星图像的解释在大地理区域上绘制地面变形的位置和大小； （2）区分局部土壤条件（例如液化）和整体构造过程引起的地面变形（侧向和垂直）； （3）开发一个综合的GIS田间观测和地面变形模型。 这项对大规模岩土特征的调查将补充美国和日本调查人员地球后侦察工作的现场观察结果。 卫星数据的利用有可能提供有关大规模地面变形及其相关地震后相关损害的独特和互补信息。 预计这项研究将在岩土工程中产生新的结果，这将成为当前遥感系统未来发展和改进的一部分。