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Experimentation of gravimetric measurements to detect the presence of buried ice along the Mary River railway corridor

机译:重量测量的实验,以检测沿玛丽河铁路走廊的埋冰的存在

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While the universal force of gravity is a constant, the gravity field of the Earth varies due to anomalies within the Earth. The Earth is made from different materials of different mass with varying densities. All have an impact on the Earth's gravitational field and can thus be detected and described using gravimeter measurement systems. Ice has a density of 917 kg/m~3 which is about half of the density of soil. Therefore, a large volume of buried ice is likely to generate a significant gravimetric anomaly detectable using high precision land gravimeter surveys. The objective of the study conducted at Mary River, Baffin Island, Canada was to assess the feasibility of using a high precision gravimeter to detect the presence of ground ice. Gravimeter surveys appear to be an effective technique to detect the presence of buried ice bodies along a transportation corridor such as the Mary River Railway. The technique allows detecting large ice bodies and gives best results when ice bodies are buried at shallow depths.
机译:虽然万有引力是恒定的,但地球的重力场由于地球内部的异常而发生变化。地球是由质量不同,质量不同的不同材料制成的。所有这些都会影响地球的重力场,因此可以使用重力计测量系统进行检测和描述。冰的密度为917 kg / m〜3,大约是土壤密度的一半。因此,使用高精度陆地重力仪测量,大量的埋冰很可能产生可检测到的重大重力异常。在加拿大巴芬岛玛丽河上进行的研究的目的是评估使用高精度重力仪检测地冰的可行性。重力仪调查似乎是检测沿诸如玛丽河铁路之类的运输走廊沿线埋冰体存在的有效技术。当冰体埋在浅深度时,该技术可以检测大冰体并提供最佳结果。

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