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The effect of seasonal soil-moisture conditions on near-surface seismic reflection data quality

机译:季节性土壤水分条件对近地表地震反射数据质量的影响

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Baket et al. (1997) and Jefferson et al. (1998) observed over periods of days to weeks that short-term moisture variations near the earth's surface could have a significant impact on the quality and character of shallow seismic reflection data. Typically, these variations are attributed to differences in source and receiver coupling. However, changes in attenuation and in the propagation velocity of seismic energy in the upper 3 m of the subsurface are important additional factors when collecting seismic data, and they are independent of source and receiver effects. Data were collected five times at a test site in central Kansas over a period of 1 year to help quantify these additional factors.
机译:Baket等。 (1997)和Jefferson等。 (1998年)观察了几天到几周的时间,地球表面附近的短期水分变化可能会对浅层地震反射数据的质量和特征产生重大影响。通常,这些变化归因于源和接收器耦合的差异。但是,在收集地震数据时,地下上部3 m中地震能量的衰减和传播速度的变化是重要的附加因素,并且与源和接收者的影响无关。在一年的时间内,在堪萨斯州中部的一个测试点收集了五次数据,以帮助量化这些其他因素。

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