| 气候变化对浅层地温测量影响的改正 |
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| 关键词:climatic change shallow layer geotemperature Fourier series amplitude period |
| 基金项目:中国地质调查局“大面积地温调查方法预研究”(项目编号:200120120085) |
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| 摘要: |
| The Correction of the Influence of Climatic Change upon Geotemperature Measurement at Shallow Layer |
| As geotemperature at the shallow layer is affected by daily and yearly periodic change of temperature on the earth′s surface, the normal geotemperature is likely to be distorted. To eliminate this effect, the authors transformedactual measuring discrete temperature data into Fourier form and got Fourier frequency and phase spectra. On such a basis, the mathematical expression for thedegree and the depth of the influence of the earth′s surface temperature was formulated in terms of amplitude. The longer the periodic variation of temperatureon the earth′s surface and the bigger the thermal diffusivity of the media, thegreater the depth and the degree of the influence. |
| JIN Xu,CHEN Xiao-dong,GUAN Yan-wu.2004.The Correction of the Influence of Climatic Change upon Geotemperature Measurement at Shallow Layer[J].Acta Geoscientica Sinica,25(5):579-582. |
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