Japan (STA) Postdoctoral Program: Imaging of Seismic Velocity Structure Beneath the Kanto-Tokai District, Japan

日本（STA）博士后项目：日本关东东海地区地震速度结构成像

• 批准号: 8912808
• 负责人: Jonathan Lees
• 金额: $ 0.5万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-01-01 至 1991-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8912808&HistoricalAwards=false
• 关键词: Japan; STA; Postdoctoral; Program; Imaging

This award will provide supplementary support to enable Dr. Jonathan Lees of the University of California, Santa Barbara to conduct collaborative research with Dr. Yoshimitsu Okada for six months at the National Research Center for Disaster Prevention, Tsukuba, Japan. They will apply tomographic techniques developed by Dr. Lees to determine the 3-dimensional P-wave velocity structure beneath the Kanto-Tokai district of Japan, and hence to image the subterranean crustal and upper mantle structures. The method developed by Dr. Lees assesses the behavior of tens of thousands of earthquake ray paths to determine the composition of the material along the paths. By superimposing the many linear descript- ions of the subterranean environment, a 3-dimensional description can be determined. Application of the tomographic method to the large, high quality data sets that have been recorded by dense seismic networks in Japan over many years should lead to a vastly improved understanding of the geological structures and tectonics of the region.

该奖项将提供补充支持，使加州大学圣巴巴拉分校的Jonathan Lees博士能够与冈田义敏博士在日本筑波的国家灾害预防研究中心进行为期六个月的合作研究。他们将应用李博士开发的断层成像技术来确定日本关东地区下方的三维P波速度结构，从而对地下地壳和上地幔结构进行成像。李博士开发的方法评估了数以万计的地震射线路径的行为，以确定路径上材料的成分。通过叠加地下环境的许多线性描述，可以确定三维描述。将层析成像方法应用于日本密集地震台网多年来记录的大量高质量数据集，应该会极大地改善对该地区地质结构和构造的了解。