GPS Geodesy in the California Borderlands

作为阐明变形如何 分布在北美/太平洋板块边界， 加州，PI将继续在大陆的GPS调查 边境地区，位于加州南部近海。 此类调查 自1986年以来，由一个四人财团 包括UCSD在内的大学。 各种证据表明， 该地区目前存在变形， 整个板块边界的运动都发生在那里。 调查结果显示， 到目前为止，已经给出了该区域的一些初步结果， 但也引发了新的问题。 这些调查的范围 （5年）不足以明确确定 变形模式 该项目将使时间跨度增加一倍， 观察;鉴于卫星星座的改进， 和追踪过去几年发生的网络， 这应该比将错误减半更好。 因为一个主要原因 进行这些测量的关键是完全理解 板块运动穿过这条边界的预算， 误差小于剩余的未知运动量。 这还不是真的，但应该是当这些测量是 完成.

As part of a number of efforts to elucidate how deformation is distributed across the North-American/Pacific plate boundary in California, the PI will continue GPS surveys in the Continental Borderland region, offshore of southern California. Such surveys have been conducted since 1986 by a consortium of four universities, including UCSD. A variety of evidence suggests that there is currently deformation in this region, with perhaps 20% of the total plate-boundary motion occurring there. The surveys so far made have given a number of tentative results for this region, but have raised new questions as well. The span of these surveys (5 years) has not been sufficient to unequivocally determine the deformation patterns. This project will double the time span of observations; given the improvements in the satellite constellation and tracking networks that have taken place in the last few years, this should do better than halve the errors. Since a major reason for making these measurements at all is to understand completely the budget of plate motion across this boundary, the needs to make the errors smaller than the remaining unknown amounts of motion. This not yet true, but should be when these measurements are complete.