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  马玉川,黄辅琼,薛艳,王博.泉水和井水温度长期观测资料的初步统计[J].震灾防御技术,2015,10(2):367-377, DOI:10.11899/zzfy20150217.

泉水和井水温度长期观测资料的初步统计
摘要:    依据中国地震台网中心前兆数据库中的水温数据,绘制了中国大陆用于地震监测预报的泉水温度分布图以及井下50—149m和150—250m的水温分布图,统计了人工和数字化观测水温中长期趋势性上升或下降的测点,分析了数字化观测水温长期趋势性变化的原因。结果表明,泉主要分布在川滇、青藏高原东北缘、中天山、郯庐断裂带及邻区、北京西北和福建沿海等地,这些泉与断裂构造具有较好的空间相关性;其中水温大于25℃的温泉多分布在中强地震多发区;井水温度的空间分布具有北方地区水温低于南方地区、小区域内的温差不显著等特征,其主要受控于气候因素;井下150—250m与50—149m水温相比,符合随深度增加水温升高的地热规律;人工观测水温中10%为客观的长期趋势性变化;数字化观测水温中24%为长期趋势性变化,其中一部分是水温的客观反映,另一部分是水温仪零飘的反映。
作者单位
马玉川 中国地震台网中心北京100045 
黄辅琼 中国地震台网中心北京100045 
薛艳 中国地震台网中心北京100045 
王博 中国地震台网中心北京100045 
关  键  词:泉井  水温  长期变化  地震  零飘
DOI:10.11899/zzfy20150217
基金项目:财政部公益性行业科研专项(201308006)、中国地震局2014年度震情跟踪专项工作任务(2014010504)、中国地震局2015年度震情跟踪专项工作任务(2015010308)
收稿日期:2014-10-13
作者简介:马玉川,男,生于1985年。硕士,助理研究员。主要从事地震地下流体动力学研究。E-mail: mayuchuan@seis.ac.cn
通讯作者:
Statistical Analysis of Long-Term Observation Data of Water Temperature in Springs and Wells
Abstract:      Based on the long-term water temperature data from groundwater monitoring network of China, we produced three distribution maps with spatial scope of mainland China. The first one is the water temperature in springs. The second one is the well water temperature in the depth range of 50-149m. The third one is the well water temperature in the depth range of 150-250m. Besides, we conducted statistical analysis on the numbers of stations which have long-term trend water temperature changes, for both of the manually and automatically observation systems. The main results are as follows. Springs are mainly distributed near the active faults. Hot springs (temperature higher than 24℃) are distributed in the regions where strong earthquakes had happened. The spatial distribution of well water temperature has relationship with regional climates, based on the phenomena that well water temperatures in the north are colder than the south and temperature differences are not big in small regions. After comparing well water temperatures at 50-149m with those at 150-250m, we found that temperature rises when depth increases. About 10% manually recorded water temperatures have long-term trend changes, which means that these changes are the reflection of the real water temperature changes. For the long-term trend water temperature changes in automatic observation system, some are the reflections of the real water temperature change, but some are caused by the zero drift of thermometer.
Keywords:  Spring well  Water temperature  Long-term changes  Earthquake  Zero drifts of thermometers
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