Geophysical Investigation of a Modern Continent-Continent Collisional Orogen: The Southern Alps, New Zealand

现代大陆-大陆碰撞造山带的地球物理调查：新西兰南阿尔卑斯山

• 批准号: 9418530
• 负责人: Thomas Henyey
• 金额: $ 372.4万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-03-15 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9418530&HistoricalAwards=false
• 关键词: Geophysical; Investigation; Modern; Continent; Collisional

9418530 Henyey This project involves a comprehensive, 4-year multiphase crustal-scale study of the Southern Alpine orogen across the central South Island of New Zealand, extending out to sea on either side of the island. The study is composed of two major transects - a northern primary transect along the Rangitata River which will have a full experimental effort at high resolution and a southern transect which will be run on a gross-crustal scale. A diversity of seismic work is the essence of the proposed study. The unique configuration of the Southern Alps Orogen - a relatively narrow (160 km) strip of land with seas on either side - allows the Principal Investigators to use several different, yet complementary, seismic methods. The project is divided into 5 phases: o Phase 1: An onshore CDP (Common Depth Point) reflection profile across the South Island along the primary transect; o Phase 2: Refraction/wide angle reflection profiles across the South Island on both transects; o Phase 3: A passive seismology field program encompassing both transects recording local, regional, and teleseismic events; o Phase 4: Ancillary studies of petrophysics, gravity, and magnetotellurics across both transects; o Phase 5: Regional synthesis and the development of final geotectonic models. ***

小行星9418530 该项目涉及对横跨新西兰南岛中部的南阿尔卑斯造山带进行一项为期4年的多阶段地壳规模综合研究，该造山带延伸到岛屿两侧的海洋。 这项研究由两个主要断面组成----一个是北方主要断面，沿着Rangitata河，将在高分辨率下进行全面的实验工作;另一个是南方断面，将在总地壳尺度上进行。 地震工作的多样性是拟议研究的本质。 南阿尔卑斯造山带的独特构造-一条相对狭窄（160公里）的陆地带，两边都是海洋-使主要调查人员能够使用几种不同但互补的地震方法。 该项目分为5个阶段： O 第1阶段：陆上CDP（共同深度点）反射 南岛沿着初选 样带; O 阶段2：折射/广角反射剖面 在南岛的两个样带上 O 第三阶段：被动地震学现场项目， 这两个样带记录了当地的，区域的， 事件; O 第四阶段：岩石物理学、重力和 两个断面的大地电磁学; O 第5阶段：区域综合和制定最后 大地构造模型 ***