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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Influences on shallow ground temperatures in high flux thermal systems
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Influences on shallow ground temperatures in high flux thermal systems

机译：高通量热力系统对浅层地面温度的影响

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摘要

Ground temperature measurements are a useful indication of subsurface processes and heat flux, particularly in volcanic and hydrothermal systems, but obtaining reliable data at sufficient resolution can be difficult. Investigators commonly use temperature measurements at 1 m depths to minimize land surface boundary impacts; however, these measurements are time-consuming and invasive, limiting the number of points that can be surveyed. Alternatively, shallow ground temperature measurements (<= 25 cm depth) offer a rapid and minimally-invasive way to collect a large number of observations in a target area. Although this method has obvious, appeal, changing atmospheric conditions can impact the observed temperatures, and thus may reasonably be expected to influence interpretations arising from the data. Here we examine the impact of precipitation and changing air temperature on shallow ground temperatures in the vicinity of a group of hot springs located in Yellowstone National Park, Wyoming. We find that the mean, the range, and the skewness of the observed temperatures were decreased by changing atmospheric conditions; however, the model variogram representing data taken after several days of moderate precipitation adequately described the spatial correlation of data taken before precipitation. We therefore conclude that the ability to differentiate between high-and low-flux areas may be somewhat reduced by moderate precipitation and changing atmospheric conditions, but that interpretations made on the basis of characteristics of the inferred variograms are likely to be robust to such perturbations in high heat flux environments. (C) 2016 Elsevier B.V. All rights reserved.
机译：地面温度测量是地下过程和热通量的有用指示，尤其是在火山和热液系统中，但要获得足够分辨率的可靠数据可能会很困难。研究人员通常使用1 m深度的温度测量值，以最大程度地减少陆地表面边界的影响。但是，这些测量非常耗时且具有侵入性，从而限制了可以测量的点数。另外，浅层地面温度测量（<= 25厘米深度）提供了一种快速且微创的方法来收集目标区域中的大量观测值。尽管此方法具有明显的吸引力，但不断变化的大气条件可能会影响观测到的温度，因此可以合理预期会影响从数据得出的解释。在这里，我们检查了降水和气温变化对怀俄明州黄石国家公园一组温泉附近浅层地面温度的影响。我们发现，随着大气条件的变化，观测到的温度的平均值，范围和偏度都减小了。但是，代表几天中度降水后采集数据的模型变异函数足以描述降水前采集数据的空间相关性。因此，我们得出的结论是，中等降水量和不断变化的大气条件可能会在一定程度上减弱高通量区域和低通量区域之间的区分能力，但是根据推断的变异函数的特征所作的解释可能对此类扰动具有鲁棒性。高热通量环境。 （C）2016 Elsevier B.V.保留所有权利。

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