Collaborative Research: The SW Pacific GPS Project

贝维斯9419262 西南太平洋全球定位系统项目利用全球定位系统监测澳大利亚板块和太平洋板块之间的板块边界复合体上和内部的地壳运动，在这一复合体中，两个极性相反的活跃俯冲系统，汤加和新赫布里底群岛岛弧由包括北斐济和劳盆地在内的广阔弧间区域所确定。 GPS网直接观测到了正常和碰撞板块会聚、弧内应变和弧后扩张的运动学过程。 该项目成功地开展了三次全球定位系统活动：1988年的一次小型活动和1990年和1992年的两次大型活动。 目前的项目将利用该区域现有的全球定位系统网络。 先前的结果表明，一些最快速的seasonian地壳运动所观察到的是发生在通恩趋势，非常复杂的水之间的地壳块体发生在这个地区。 重要的是要跟进以前的情况，以确认这些行动观察结果。

Bevis 9419262 The SW Pacific GPS Project has used the Global Position System (GPS) to monitor crustal motion across and within a plate boundary complex between the Australian and Pacific plates, where two active subduction systems of opposite polarity, the Tonga and New Hebrides island arcs are set by a broad interarc region which includes the North Fiji and Lau Basins. The GPS net has directly observed the kinematics of normal and collisional plate convergence, intra-arc strain and back-arc spreading. The Project has mounted three successful GPS campaigns: a small one in 1988 and two large campaigns in 1990 and 1992. The current project will the existing GPS network in this region. Prior results have demonstrated that some of the most rapid aseismic crustal motions ever observed are taking place in the Tongen trend, and that very complex water between crustal blocks are taking place in this region. It is important to follow up on the previous to confirm there actonisting observations.