Knowledge Resource Center for Ecological Environment in Arid Area
Quantifying Subsurface Propagation Losses for VHF Radar Sounding Waves in Hyper-Arid Terrains | |
Scabbia, Giovanni1,2; Heggy, Essam2,3 | |
通讯作者 | Scabbia, Giovanni |
会议名称 | 38th IEEE International Geoscience and Remote Sensing Symposium (IGARSS) |
会议日期 | JUL 22-27, 2018 |
会议地点 | Valencia, SPAIN |
英文摘要 | To assess the detectability of fossil aquifers using sounding radars, we investigate the VHF attenuation characteristics of the most common sedimentary layers overlaying shallow groundwater systems in hyper-arid deserts. In particular, we quantify the dielectric and scattering losses using GPR profiles acquired over mafic dunes and sand sheets in Oman, and on the karstic limestone in Qatar, which both present radar characteristics representative of substantial portions of the upper layer of most desert environments of North Africa and the Arabian Peninsula. Understanding the amplitude and spatial variability of these losses will significantly support the ongoing development of airborne and orbital VHF sounders dedicated to large-scale groundwater mapping in hyper-arid areas [1]. Our results suggest that VHF radars with 80-100dB effective dynamic range at the surface are capable of probing the water table in hyper-arid sedimentary environments up to 70-120 m of depth, hence covering most of the shallow aquifers located in the considered area. We observe that dielectric absorption is the main loss factor in aeolian deposits, while volume scattering, controls similar to 60% of the overall losses in karstic environments. |
英文关键词 | Radar Sounder Groundwater Dielectric & Scattering |
来源出版物 | IGARSS 2018 - 2018 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM |
ISSN | 2153-6996 |
出版年 | 2018 |
页码 | 6800-6803 |
EISBN | 978-1-5386-7150-4 |
出版者 | IEEE |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | Qatar;USA |
收录类别 | CPCI-S |
WOS记录号 | WOS:000451039806142 |
WOS类目 | Engineering, Electrical & Electronic ; Geosciences, Multidisciplinary ; Remote Sensing |
WOS研究方向 | Engineering ; Geology ; Remote Sensing |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/307428 |
作者单位 | 1.Qatar Fdn, Qatar Environm & Energy Res Inst, Doha 34110, Qatar; 2.Univ Southern Calif, Ming Hsieh Dept Elect Engn, Los Angeles, CA 90089 USA; 3.NASA, Jet Prop Lab, Pasadena, CA 91109 USA |
推荐引用方式 GB/T 7714 | Scabbia, Giovanni,Heggy, Essam. Quantifying Subsurface Propagation Losses for VHF Radar Sounding Waves in Hyper-Arid Terrains[C]:IEEE,2018:6800-6803. |
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