共查询到15条相似文献，搜索用时 78 毫秒
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山西奇村水汞相关性分析与与区域分布特征的研究—剖析山西奇村水汞与空白样同步的原因 总被引：1，自引：2，他引：1
为揭示山西奇村水汞与空白样测值同步的原因，对水化热水井与空白样、水化热水井与制作空白样的冷水井、制作空白样的冷水井与空白样的特征进行了分析，并对忻定盆地南部近1 000km^2不同深度、不同水温的21眼井进行了水汞测量。研究表明，测区各井具有水汞含量一致、动态变化同步的基本特征，提出水汞动态可能反映了来自大构造及深层的变化信息的看法。 相似文献
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通过对山西忻州奇村水化站水汞观测水样与空白样测值曲线所含信息的研究,论述了两者产生同步现象的原因及其动态特征,进而提出排除水汞干扰、识别水汞异常的方法。 相似文献
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实验目的奇村观测井水样与空白样汞测值一直保持着近乎完全一致的形态,针对空白样与观测井水样汞含量一致的矛盾,通过分析,进行了实验,试图通过实验找出其中的干扰因素,为正确使用观测资料及改进观测方法提供依据. 相似文献
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为进一步明确山西忻州奇村水汞观测过程中存在的干扰因素,分别对硫酸单一试剂、综合试剂、空气湿度、同一个水样多次观测等项进行了试验。试验表明,现用硫酸及其他试剂的汞污染均不明显,对水汞观测构不成于扰;观测室内空气高湿度对水汞观测有一定干扰,且湿度越大,干扰越强,高湿度导致测值大幅突跳;通常所测的水汞含量实为在鼓泡延续时间及空气流量固定不变特定情况下的相对含量,两者的改变会对测值的可比性产生人为干扰。 相似文献
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研究了奇村热水井水汞异常与山西境内地震的关系，发现奇村热水井水汞异常与山西境内Ｍ＞４．０地震有较好的对应关系。说明水汞是奇村热水井的映震灵敏的观测项目 相似文献
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乌鲁木齐地区水汞空白值较高原因分析 总被引：2，自引：0，他引：2
从蒸馏水的制备过程及乌鲁木齐10号泉的化学成份等方面入手，通过分析认为乌鲁木齐水汞空白值较高的原因是：①在蒸馏水的制备过程中自来水中汞富集到蒸馏水中；②乌鲁木齐10号泉水中含有较高的S^2-，使10号泉水汞测值偏低。另外，还探讨了如何利用水汞空白值来处理水汞资料，从而提高水汞观测资料的质量及其在地震分析预报中的作用。 相似文献
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通过对比观测实验,对水汞观测中出现的大幅度高值异常变化原因进行分析,认为汞标准源长时间置于观测室,造成室内汞污染;捕汞管、取样瓶、还原器等长时间不清洗受到污染等是造成水汞高值的主要原因。对观测过程中存在的问题提出几点建议,以利于提高水汞观测质量及在地震分析预报中的作用。 相似文献
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Dongmei Han Xing Liang Matthew J. Currell Xianfang Song Zongyu Chen Menggui Jin Changming Liu Ying Han 《水文研究》2010,24(22):3157-3176
The conceptual hydrogeological model of the low to medium temperature Daying and Qicun geothermal fields has been proposed, based on hydrochemical characteristics and isotopic compositions. The two geothermal fields are located in the Xinzhou basin of Shanxi, China and exhibit similarities in their broad‐scale flow patterns. Geothermal water is derived from the regional groundwater flow system of the basin and is characterized by Cl·SO4‐Na type. Thermal water is hydrochemically distinct from cold groundwater having higher total dissolved solids (TDS) (>0·8 g/l) and Sr contents, but relatively low Ca, Mg and HCO3 contents. Most shallow groundwater belongs to local flow systems which are subject to evaporation and mixing with irrigation returns. The groundwater residence times estimated by tritium and 14C activities indicate that deep non‐thermal groundwater (130–160 m) in the Daying region range from modern (post‐1950s) in the piedmont area to more than 9·4 ka BP (Before Present) in the downriver area and imply that this water belong to an intermediate flow system. Thermal water in the two geothermal fields contains no detectable active 14C, indicating long residence times (>50 ka), consistent with this water being part of a large regional flow system. The mean recharge elevation estimated by using the obtained relationship Altitude (m) = ? 23·8 × δ2H (‰ ) ? 121·3, is 1980 and 1880 m for the Daying and Qicun geothermal fields, respectively. The annual infiltration rates in the Daying and Qicun geothermal fields can be estimated to be 9029 × 103 and 4107 × 103 m3/a, respectively. The variable 86Sr/87Sr values in the thermal and non‐thermal groundwater in the two fields reflect different lithologies encountered along the flow path(s) and possibly different extents of water‐rock interaction. Based on the analysis of groundwater flow systems in the two geothermal fields, hydrogeochemical inverse modelling was performed to indicate the possible water‐rock interaction processes that occur under different scenarios. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献