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首页> 外文期刊>Geosciences >Mapping a Subsurface Water Channel with X-Band and C-Band Synthetic Aperture Radar at the Iron Age Archaeological Site of ‘Uqdat al-Bakrah (Safah), Oman
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Mapping a Subsurface Water Channel with X-Band and C-Band Synthetic Aperture Radar at the Iron Age Archaeological Site of ‘Uqdat al-Bakrah (Safah), Oman

机译：在阿曼Uqdat al-Bakrah（萨法）的铁器时代考古现场用X波段和C波段合成孔径雷达绘制地下水道

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Subsurface imaging in arid regions is a well-known application of satellite Synthetic Aperture Radar (SAR). Archaeological prospection has often focused on L-band SAR sensors, given the ability of longer wavelengths to penetrate more deeply into sand. In contrast, this study demonstrates capabilities of shorter-wavelength, but higher spatial resolution, C-band and X-band SAR sensors in archaeological subsurface imaging at the site of ‘Uqdat al-Bakrah (Safah), Oman. Despite having varying parameters and acquisitions, both the X-band and C-band images analyzed were able to identify a subsurface paleo-channel that is not visible on the ground surface. This feature was first identified through Ground Penetrating Radar (GPR) survey, then recognized in the SAR imagery and further verified by test excavations. Both the GPR and the excavations reveal the base of the paleo-channel at a depth of 0.6 m–0.7 m. Hence, both X-band and C-band wavelengths are appropriate for subsurface archaeological prospection in suitable (dry silt and sand) conditions with specific acquisition parameters. Moreover, these results offer important new insights into the paleo-environmental context of ancient metal-working at ‘Uqdat al-Bakrah and demonstrate surface water flow roughly contemporary with the site’s occupation.
机译：干旱地区的地下成像是卫星合成孔径雷达（SAR）的众所周知的应用。考古学方面的研究通常集中在L波段SAR传感器上，因为更长的波长能够更深地穿透沙子。相比之下，这项研究证明了在阿曼Uqdat al-Bakrah（Safah）的考古地下成像中具有较短波长，但具有较高空间分辨率，C波段和X波段SAR传感器的功能。尽管具有不同的参数和采集，但分析的X波段图像和C波段图像均能够识别在地面上不可见的地下古通道。此功能首先通过探地雷达（GPR）勘测确定，然后在SAR图像中识别，并通过测试挖掘进一步验证。 GPR和开挖都揭示了古河道的底部，深度为0.6 m–0.7 m。因此，X波段和C波段波长都适合在具有特定采集参数的合适（干粉砂和沙子）条件下进行地下考古勘探。此外，这些结果为'Uqdat al-Bakrah的古代金属加工的古环境背景提供了重要的新见解，并证明了该场地的占用大致与当代地表水流有关。

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