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首页> 外文期刊>NRIAG Journal of Astronomy and Geophysics >Estimation of crustal movements using the Global Positioning System (GPS) measurements along Nile Valley area, Egypt from 2007 to 2012
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Estimation of crustal movements using the Global Positioning System (GPS) measurements along Nile Valley area, Egypt from 2007 to 2012

机译：使用全球定位系统（GPS）测量2007年至2012年埃及尼罗河谷地区的地壳运动

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The Nile Valley in Egypt is located to the west of the Red Sea Rift and to the south of the Mediterranean Sea. Recently, some moderate earthquakes were occurred along the Nile Valley at the eastern and western side. Tectonically, the Nile Valley is controlled by NW–SE, NE–SW, E–W and N–S tectonic trends due to the exerted forces and stresses.A program of studying the recent crustal movements in Egypt has been started since 1984 to cover some areas which are characterized by the occurrence of felt Earthquakes. One of these areas is the Nile Valley. About 6 moderate earthquakes with magnitudes more than 4 were occurred on both sides of River Nile.The present study aimed to determine the recent crustal movement parameters along the Nile Valley using the Global Positioning System (GPS) measurements. To achieve this mission, a GPS network consisting of ten geodetic stations has been established on both sides along the Nile Valley area. GPS measurements have been collected from 2007 to 2012. The collected data were processed using Bernese 5.0 Software. The result of the data analysis indicates that the rate of local velocity is small ranging from 1 to 4mm/year. This rate is consistent with the low rate of occurrence of recent earthquakes activity along the Nile Valley area. But, the results obtained from the calculation of the regional velocity indicated that the velocity of the GPS stations including the African Plate motion is about 25mm/year in the northeast direction which is consistent with the African Plate motion direction.
机译：埃及的尼罗河谷位于红海裂谷的西部和地中海的南部。最近，东西两侧的尼罗河谷地区发生了中度地震。在构造上，由于施加的力和压力，尼罗河谷受到西北-东南，东北-西南，西南和西北的构造趋势的控制。自1984年以来，开始了一项研究埃及最近地壳运动的计划，以覆盖某些地区以发生地震为特征。这些地区之一是尼罗河谷。尼罗河两岸发生了大约6次中度地震，震级超过4级。本研究旨在使用全球定位系统（GPS）测量来确定尼罗河谷沿岸的近期地壳运动参数。为了完成这项任务，在尼罗河谷地区的两侧建立了由十个大地测量站组成的GPS网络。从2007年至2012年收集了GPS测量值。使用Bernese 5.0软件处理了收集到的数据。数据分析结果表明，局部速度的变化范围很小，为1-4mm /年。该比率与尼罗河谷地区近期地震活动的发生率较低相符。但是，从区域速度的计算结果表明，包括非洲板块运动在内的GPS站的速度在东北方向上约为25mm /年，与非洲板块运动方向一致。

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