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首页> 外文期刊>Geomorphology >Use of optical and radar remote sensing satellites for identifying and monitoring active/inactive landforms in the driest desert in Saudi Arabia
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Use of optical and radar remote sensing satellites for identifying and monitoring active/inactive landforms in the driest desert in Saudi Arabia

机译：使用光学和雷达遥感卫星用于在沙特阿拉伯最干燥的沙漠中识别和监测主动/非活动地貌

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摘要

Observing Earth from the space is key for monitoring land-surface dynamics and probing near-surface geomorphic and geological features, including those obscured by sand sheets/dunes and human activity. The hyper-arid area of the Arabian Peninsula was selected for detecting and extracting obscure paleohydrological systems and modeling the spatio-temporal dynamics of sand dunes using synthetic aperture radar (SAR) and optical high-resolution remote sensing images. Interferometric synthetic aperture radar (InSAR) coherence change detection (CCD) using Sentinel-1 imagery was performed, revealing subtle changes in the surficial landforms of the study area. These images also discriminated between active and inactive geomorphic features. In addition, low-frequency L-band Advanced Land Observing Satellite/Phased Array type L-band Synthetic Aperture Radar (ALOS/PALSAR) and Shuttle Radar Topography Mission (SRTM) data revealed the details of paleochannels in the basins that drain into the Arabian Gulf. These ephemeral rivers are the source of sand that was later reshaped into dunes by aeolian processes. The results also revealed that the morphology and extension of dunes were dearly influenced by topography, slope, and wind velocity and direction, rather than human activities. Knowledge gained by exploring desert features is essential for planning settlements and development, and integrated approaches using a variety of remote sensing datasets are key for enhancing Earth observation across a range of spatial and temporal scales. (C) 2020 Elsevier B.V. All rights reserved.
机译：从空间观察地球是监测土地表面动力学和探测近表面地貌和地质特征的关键，包括被砂纸/沙丘和人类活动模糊的人。阿拉伯半岛的超干旱地区被选中用于检测和提取模糊的古水水文系统，并使用合成孔径雷达（SAR）和光学高分辨率遥感图像建模沙丘的时空动态。进行干涉性合成孔径雷达（INSAR）相干变化检测（CCD）使用哨兵-1图像进行，揭示了研究区域的表观地貌的微妙变化。这些图像也区分了主动和非活动的地貌特征。此外，低频L波段先进的土地观察卫星/相控阵型L波段合成孔径雷达（ALOS / PALSAR）和班车雷达形貌任务（SRTM）数据揭示了流入阿拉伯的盆地中的古希腊菜的细节海湾。这些短暂的河流是砂的来源，后来被海湾过程重塑成沙丘。结果还透露，沙丘的形态和延伸受到地形，坡度和风速和方向的影响，而不是人类活动。通过探索沙漠特征获得的知识对于规划定居点和开发至关重要，并且使用各种遥感数据集的集成方法是在一系列空间和时间尺度上增强地球观察的键。 （c）2020 Elsevier B.v.保留所有权利。

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  • 来源
    《Geomorphology》 |2020年第1期|107197.1-107197.14|共14页
  • 作者

    Abdelkareem Mohamed; Gaber Ahmed; Abdalla Fathy; El-Din Gamal Kamal;

  • 作者单位

    South Valley Univ Geol Dept Qena 83523 Egypt|South Valley Univ Remote Sensing Lab Qena 83523 Egypt;

    Port Said Univ Geol Dept Port Said 42522 Egypt;

    South Valley Univ Geol Dept Qena 83523 Egypt|King Saud Univ Sci Res Riyadh 68953 Saudi Arabia;

    South Valley Univ Geol Dept Qena 83523 Egypt|Prince Sattam Bin Abdulaziz Univ Coll Sci & Humanities Chem Dept Al Kharj Saudi Arabia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Radar imaging; InSAR-CCD; Sand dunes dynamics; Paleohydrology;

    机译：雷达成像;INSAR-CCD;沙丘动力学;古水化学;

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