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首页> 外文期刊>Vestnik Mordovskogo Universiteta >ESTIMATION OF CRUSTAL MOVEMENTS ALONG THE NILE VALLEY AREA, EGYPT
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ESTIMATION OF CRUSTAL MOVEMENTS ALONG THE NILE VALLEY AREA, EGYPT

机译：埃及尼河谷地区的地壳运动估计

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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 have occurred along the Nile Valley at the eastern and western sides. The major tectonic trends in this area are the NW-SE and NE-SW lineaments. The Nile valley and the Nile delta are a part of the active rift that is probably connected with the Red and Mediterranean seas tectonic activity. This zone is characterized by small-to-moderate intensity earthquakes that have caused extremely severe damage to recent and historical constructions. Small local and large distant earthquakes could be a source of huge socio-economic damage in this area. A program of researching of recent crustal movements in Egypt has been started since 1984 to cover some areas which are characterized by high occurrence of earthquakes. One of these areas is Nile Valley. Several moderate earthquakes with magnitudes more than 4 occurred on both sides of River Nile. The present study aims 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 result of the data analysis indicates that the rate of local velocity is ranging from 1 to 4 mm per year. This rate is consistent with the occurrence of recent earthquake activity along the Nile Valley area. But the results obtained from GPS stations inclusive of the African Plate regional velocity indicate that the velocity motion is about 25 mm/year taking the northeast 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。该地区的主要构造趋势是西北-东南和东北-西南地区。尼罗河谷和尼罗河三角洲是活跃裂谷的一部分，可能与红海和地中海构造活动有关。该区域的特点是中小烈度地震，对最近和历史建筑造成了极为严重的破坏。局部小地震和远距离地震可能是该地区巨大的社会经济损失的根源。自1984年以来，开始了一项针对埃及最近地壳运动的研究计划，以覆盖一些地震多发地区。这些地区之一是尼罗河谷。尼罗河两岸发生了数次大于4级的中度地震。本研究旨在使用全球定位系统（GPS）测量来确定沿尼罗河谷的最新地壳运动参数。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年到2012年收集了GPS测量值。数据分析的结果表明，局部速度的速率为每年1-4毫米。该速率与尼罗河谷地区最近发生的地震活动一致。但是从包括非洲板块区域速度在内的GPS站获得的结果表明，沿东北方向，速度运动约为25毫米/年。

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