Onshore/Offshore Seismic Imaging of the New Zealand Subduction Zone

新西兰俯冲带的陆上/海上地震成像

• 批准号: 2401216
• 金额: --
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2401216
• 关键词: Onshore; Offshore; Seismic; Imaging; New

The behaviors and processes that occur at subduction zones inform our global understanding of plate boundary interaction at a variety of scales with broad implications for plate tectonics, volatiles cycling, seismic hazard and climate. In New Zealand there is evidence for both slow slip seismicity as well as thrust earthquakes changing over a relatively short length scale. In addition, fluid release from the slab affects a range of processes including fault slip, arc magmatism and potentially mud volcanoes. The variety of processes and length scales necessitates investigation at a range of scales and sensitivities. The particular emphasis of this project will be to provide larger scale structural imaging of New Zealand. The student will use compiled and complementary onshore and offshore seismology datasets to image the subduction zone system in New Zealand at multiple scales from 10's km to 1000 km. This will complement ongoing work focused on understanding slow slip on the Hikurangi Margin. When combined the student will have data that spans both the north and south Islands.

俯冲带发生的行为和过程让我们对各种尺度上的板块边界相互作用有了全面的了解，对板块构造、挥发物循环、地震灾害和气候具有广泛的影响。在新西兰，有证据表明慢滑地震活动以及逆冲地震在相对较短的长度范围内发生变化。此外，板块中的流体释放会影响一系列过程，包括断层滑移、弧岩浆作用和潜在的泥火山。过程和长度尺度的多样性需要在一系列尺度和灵敏度下进行研究。该项目的特别重点是提供新西兰更大规模的结构成像。学生将使用已编译和补充的陆上和海上地震数据集，以 10 公里到 1000 公里的多个尺度对新西兰俯冲带系统进行成像。这将补充正在进行的致力于了解希库朗吉边缘缓慢滑移的工作。合并后，学生将获得横跨北岛和南岛的数据。