تقرير
利用地震波研究熱點和慢速擴張洋脊下的上地幔：整合地體動力模型與波形模擬(2/2)
| العنوان: | 利用地震波研究熱點和慢速擴張洋脊下的上地幔：整合地體動力模型與波形模擬(2/2) |
|---|---|
| المؤلفون: | 洪淑蕙 |
| بيانات النشر: | 臺北市：國立臺灣大學地質科學系暨研究所 |
| سنة النشر: | 2003 |
| المجموعة: | National Taiwan University Institutional Repository (NTUR) |
| مصطلحات موضوعية: | parallel computation, seismic wave propagation, anisotropy, mantle plume |
| جغرافية الموضوع: | 計畫年度：91, 起迄日期：2002-08-01/2003-07-31 |
| الوصف: | Mid-ocean ridges and surface hotspots are two places where active volcanisms occur on our planet. Using seismological observations as constraints, the goal of our study is to understand the form of mantle upwelling and melt production at a possible deep-rooted mantle plume and beneath a slow-spreading ridge segment which are responsible for magma eruption on the earth’s surface. Seismic experiments on the fast-spreading East-Pacific Rise and ridge-centered Icelandic hotspot generated numerous high-quality records which indicate the underlying structures are partially-molten, elastically heterogeneous and anisotropic as well as attenuated. In these geodynamically-interesting but structurally-complicated environments expected under discontinuous ridge segments and hotspot tracks, many of the usual approximation employed in modeling finite-frequency seismic wave propagation break down. This study explores the effects of velocity heterogeneity and anisotropy associated with temperature and compositional variations in the upwelling mantle on seismic waveforms by virtue of direct solution method. Fully understanding of seismic wave behaviors in a complicated structure like the earth will help data acquisition accusation and interpretation to image the deep mantle structure. |
| نوع الوثيقة: | report |
| وصف الملف: | application/pdf; 289572 bytes |
| اللغة: | Chinese |
| العلاقة: | 912611M002025; http://ntur.lib.ntu.edu.tw/handle/246246/11832Test; http://ntur.lib.ntu.edu.tw/bitstream/246246/11832/1/912611M002025.pdfTest |
| الإتاحة: | http://ntur.lib.ntu.edu.tw/handle/246246/11832Test http://ntur.lib.ntu.edu.tw/bitstream/246246/11832/1/912611M002025.pdfTest |
| حقوق: | 國立臺灣大學地質科學系暨研究所 |
| رقم الانضمام: | edsbas.15BD9438 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |