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首页> 外文期刊>Journal of Remote Sensing & GIS >Spatio-Temporal Assessment of Quarry Sites in Mpape, Abuja, Nigeria
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Spatio-Temporal Assessment of Quarry Sites in Mpape, Abuja, Nigeria

机译：尼日利亚阿布贾姆帕佩采石场的时空评估

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The study mapped and analyzed spatiotemporal variability of quarry sites in Mpape District, Bwari Area Council of Abuja. The study used high-resolution IKONOS satellite image, ASTERDEM and Hi-Target Differential GNSS receivers. The result showed that nine quarry sites exist in Mpape with three abandoned and six are active while three are located in the center of Mpape with one active and two abandoned. The depth analysis revealed that the deepest site is 25 m at Julius Berger quarry site and the lowest depth was 6 m at Dantata quarry site. The study also reveals that the rocky surfaces has the highest elevation and are located in the upper and lower region of Mpape. The quarry sites and settlement are located on a high elevation ground. Importantly, the study revealed that the derelict ponds were formed because of rigorous quarry activities, since there are no tributaries connecting each of the derelict ponds. The buffer analysis carried out at 100 and 150 m distances revealed that settlements are already engulfing the three quarry sites located at the core center of Mpape. Also, Chinese quarry site has been encroached, while the other six do not have settlement contiguous to them at 100 and 150 m buffer distances.
机译：该研究绘制并分析了阿布贾布瓦里地区委员会姆帕佩地区采石场的时空变化。该研究使用高分辨率IKONOS卫星图像，ASTERDEM和高目标差分GNSS接收器。结果表明，Mpape存在9个采石场，其中三个被废弃，六个处于活动状态，而三个位于Mpape中心，其中一个处于活动状态，两个处于废弃状态。深度分析显示，Julius Berger采石场的最深场地为25 m，Dantata采石场的最低深度为6 m。研究还表明，岩石表面的海拔最高，位于Mpape的上部和下部。采石场和居民点位于高海拔地面上。重要的是，该研究表明，废弃的池塘是由于严格的采石活动而形成的，因为没有支流连接每个废弃的池塘。在100和150 m距离处进行的缓冲分析表明，定居点已经吞没了位于Mpape核心中心的三个采石场。此外，中国采石场已经被侵占，而其他六个采石场在100和150 m的缓冲距离处没有与其相邻的定居点。

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