Acquisition of Continuous GPS Equipment for the Earth Sciences

该合同为全球定位系统（GPS）接收器和辅助设备的采购提供部分资金（占总成本的59%），用于安装南加州综合GPS网络（SCIGN）的50个GPS站。这些空间站的安装、运行和维护将由南加州大学协调。该机构承诺提供该项目剩余41%的成本。测量地壳变形的大地测量技术最近取得了迅速的进展。目前最先进的GPS技术能够测量几毫米的位移。在洛杉矶地区持续运行的SCIGN网络将能够检测到接近1毫米/年的速率，并将用于绘制该地震易发地区随着时间的推移而发展的区域应变模式。* * *

9601571 Henyey This award provides partial funding (59% of total cost) for the acquisition of Global Positioning System (GPS) receivers and ancillary equipment for installing 50 GPS stations of the Southern California Integrated GPS Network (SCIGN). Installation, operation, and maintenance of the stations will be coordinated by the University of Southern California. The institution is committed to providing the remaining 41% of cost of this project. Geodetic techniques to measure crustal deformation have seen rapid advances recently. State-of-the-art GPS techniques are currently capable of measuring displacements of a few millimeters. The continuously operating SCIGN network in the Los Angeles area will be able to detect rates approaching 1 mm/yr and will be used to map the regional strain pattern as it develops overtime in this earthquake prone area. ***