Collaborative Research: Seismic Studies of the Andean Lithosphere

合作研究：安第斯岩石圈的地震研究

• 批准号: 8720843
• 负责人: J. Arthur Snoke
• 金额: $ 3.06万
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-02-01 至 1991-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8720843&HistoricalAwards=false
• 关键词: Collaborative; Research; Seismic; Studies; Andean

A central problem in Andean geophysics remains the accurate characterization of the overriding plate, specifically its composition, style of deformation, and thermal state. This collaborative proposal is for seismic analysis of digital array data and broadband data to image that crust/mantle wedge in two diverse Andean provinces: the region of flat subduction beneath central Peru, and the region of the westward-stepping subduction complex that comprises the northernmost Andes. Our objective is to map seismic structures in sufficient detail and accuracy that the results may be applied to understanding the dynamical and magmatic processes that shape the Andes. By combining these two markedly different provinces in a single study we endeavor also to resolve fundamental differences in deep structure between segments of the Andean arc.

安第斯天文学的一个中心问题仍然是 准确描述覆盖板块，特别是其 成分、变形方式和热状态。 这 一项合作提案是对数字阵列数据进行地震分析 和宽带数据来成像地壳/地幔楔在两个不同 安第斯诸省：秘鲁中部之下的平坦俯冲区， 以及西向俯冲复合体的区域， 包括最北端的安第斯山脉。 我们的目标是绘制地震图 足够的细节和准确性，结果可能是 应用于理解动力学和岩浆过程， 塑造了安第斯山脉。 通过将这两个明显不同的省份结合起来 在一项单独的研究中，我们还奋进解决根本的分歧， 在安第斯山脉弧段之间的深层结构中。