Collaborative Research: The Central Andes GPS Project

该项目是观察变形沿沿着2500公里的一个 世界上最多产的大型和大型发电机之一 地震智利会聚板块边缘 拟议 区域GPS观测站点的分布， 测量的变形的区域直接上方的 主要的板间地震带，但包括纳斯卡站 钢板和横跨安第斯山脉的部位，以建立整体钢板 安第斯造山带内的运动和变形。 这一区域 GPS网每两年观测一次，观测时间为6周 以固定和跳跃的模式使用接收器的运动， 分散移动的部署。 在其间的几年里， 使用5或6个接收器安装的辅助运动将实现 一个空间密集化的计划， 区域网络。 将观察大约40-60个部位 每一次的辅助战役。 短期科学的主要 目的是测量地震和抗震变形， 板间强震复发周期 板块会聚和俯冲带的构造。 的 第二，长期目标是观察横向和 垂直变形与弧前和整个安第斯山脉 科迪勒拉山脉 拟议中的联盟包括美国的GPS专家 部署和数据分析;南美洲地震活动、构造 和外地业务;与智利、阿根廷和 玻利维亚科学家和国家大地测量。

This project is to observe deformations along 2500 km of one of the world's most prolific generators of large and great earthquakes, the Chilean convergent plate margin. The proposed distribution of regional GPS observing sites is focused on measurements of deformation of the region immediately above the main interplate seismic zone, but includes stations on the Nazca plate and sites across the Andes to establish the overall plate motions and deformations within the Andean orogen. This regional GPS network would be observed every two years during six week campaigns with receivers utilized in a pattern of fixed and leap- frogging mobile deployments. During the intervening years subsidiary campaigns mounted using 5 or 6 receivers would implement a program of spatial densification at specially selected parts of the regional network. Approximately 40-60 sites would abe observed during each subsidiary campaign. The primary short-term scientific objective is to measure seismic and aseismic deformations in the cycle of major interplate earthquake recurrence in relation to plate convergence and the tectonics of the subduction zone. The secondary, longer-term objective is to observe the horizontal and vertical deformations with the forearc and across the Andean cordillera. The proposed consortium includes U.S. experts in GPS deployment and data analysis; South American seismicity, tectonics and field operations; and strong ties with Chilean, Argentine and Bolivian scientists and the national geodetic surveys.