Lithospheric Deformation of the Southern Alps in South Island, New Zealand

新西兰南岛南阿尔卑斯山的岩石圈变形

• 批准号: 9805224
• 负责人: Monica Kohler
• 金额: $ 13万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-15 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9805224&HistoricalAwards=false
• 关键词: Lithospheric; Deformation; Southern; Alps; South

9805224KohlerThis research deals with the study of the crustal and upper mantle structure along the young, seismically active Southern Alps in New Zealand in collaboration with the New Zealand Institute of Geological and Nuclear Sciences. The project will test the question of whether young transpressional tectonic regimes require thickened lithospheric high seismic-velocity, high-density roots as part of their early development. The main objectives are; 1) to obtain three-dimensional seismic images of subcrustal lithospheric heterogeneity beneath the Southern Alps, 2) to integrate the tomography images into the larger tectonic framework describing the development and evolution of the oblique subduction zone fault system, and 3) to develop a general thermal-kinematic model of young orogeny. This will be accomplished by teleseismic travel-time inversions of the 1995-1996 Southern Alps Passive Seismic Experiment data set combined with the New Zealand National Seismograph Network data set. This research is a component of the National Earthquake Hazard Reduction Program.***

这项研究与新西兰地质和核科学研究所合作，研究了新西兰年轻的、地震活跃的南阿尔卑斯山沿线的地壳和上地幔结构。该项目将测试年轻的跨压构造体制是否需要加厚的岩石圈高地震速度、高密度的根部作为其早期发展的一部分。其主要目标是：1)获得南阿尔卑斯山之下地壳下岩石圈非均质性的三维地震图像，2)将层析成像图像整合到描述斜俯冲带断层系统的发展和演化的更大的构造框架中，以及3)建立年轻造山的一般热运动学模型。这将通过1995-1996年南阿尔卑斯山被动地震实验数据集与新西兰国家地震台网数据集的远震走时反演来实现。这项研究是国家地震减灾计划的一部分。*