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Swanberg和Morgan(1979)依美国的区城热流值资料和大量的地下水二氧化硅温标温度资料,找出了二者的线性关系。于1980年又做了进一步讨论,指出根据水中二氧化硅含量,运用经验公式可以计算出当地的大地热流值,并称这种大地热流值为硅热流值(silica heat flow),以便与用传统办法实测的大地热流值相区别。式中[SiO_2]为地下水中二氧化硅浓度,以毫克升~(-1)表示,Tsio_2为水溶解二氧化硅达平衡时的温度,以℃表示;T_0为当地多年平均气温,以℃表示;m是与地下水循环的最小平均深度相关的值,等于0.67℃米~2毫瓦~(-1)。本文根据川西的1089个地下的二氧化硅含量数据,用这种方法计算出川西硅热流值。每一经纬度网格求一个平均值,共31个,进而做出硅热流等值图,并就图形与地质背景的关系做了初步讨论。最后讨论了这一方法的适用性和移植到我国其他地区的可能性。
Swanberg and Morgan (1979) found the linear relationship between the two, based on data from the US district heat flow and a large number of groundwater silica temperature scales. In 1980, further discussion was made, pointing out that according to the water content of silica, the empirical formula can be used to calculate the local value of the earth’s heat and call this value of the earth’s heat as the silicon heat flow (silica heat flow) Method of measuring the difference between the value of the earth’s heat flow. In the formula, [SiO_2] is the concentration of silica in groundwater, expressed in milligrams liters ~ (-1), Tsio_2 is the temperature at which water dissolves in silica reaches equilibrium, expressed in ° C; T_0 is the local average temperature in ° C ; m is the value associated with the minimum average depth of the groundwater cycle, equal to 0.67 ° C to 2 milliwatts -1. Based on the 1089 subsurface silica content data in western Sichuan, this paper calculates the silicon heat flux in western Sichuan. Each latitude and longitude grid to find an average, a total of 31, and then make the silicon heat flow contour map, and the relationship between the graphics and the geological context made a preliminary discussion. Finally, the applicability of this approach and the potential for its relocation to other parts of my country are discussed.