| DOI: | 10.2172/1047778
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| 报告号: | LLNL-TR-541351
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| 报告题名: | Detecting and monitoring UCG subsidence with InSAR |
| 作者: | Mellors, R J; Foxall, W; Yang, X
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| 出版年: | 2012
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| 发表日期: | 2012-03-23
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| 总页数: | 24
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| 国家: | 美国
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| 语种: | 英语
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| 中文主题词: | 植被
; 雷达
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| 主题词: | VEGETATION
; RADAR
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| 英文摘要: | The use of interferometric synthetic aperture radar (InSAR) to measure surface subsidence caused by Underground Coal Gasification (UCG) is tested. InSAR is a remote sensing technique that uses Synthetic Aperture Radar images to make spatial images of surface deformation and may be deployed from satellite or an airplane. With current commercial satellite data, the technique works best in areas with little vegetation or farming activity. UCG subsidence is generally caused by roof collapse, which adversely affects UCG operations due to gas loss and is therefore important to monitor. Previous studies have demonstrated the usefulness of InSAR in measuring surface subsidence related to coal mining and surface deformation caused by a coal mining roof collapse in Crandall Canyon, Utah is imaged as a proof-of-concept. InSAR data is collected and processed over three known UCG operations including two pilot plants (Majuba, South Africa and Wulanchabu, China) and an operational plant (Angren, Uzbekistan). A clear f eature showing approximately 7 cm of subsidence is observed in the UCG field in Angren. Subsidence is not observed in the other two areas, which produce from deeper coal seams and processed a smaller volume. The results show that in some cases, InSAR is a useful tool to image UCG related subsidence. Data from newer satellites and improved algorithms will improve effectiveness. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1047778
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/40843
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1047778.pdf（23377KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Mellors, R J,Foxall, W,Yang, X. Detecting and monitoring UCG subsidence with InSAR. 2012-01-01.
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