基于误差统计分析台站短水准测量数据异常
首发时间:2017-06-08
摘要:为深入分析台站短水准测量数据是否存在趋势异常,本文以房山台站2013-2016年测量数据为例,利用统计方法对各测段往测高差、返测高差与往返测高差中数的误差进行了归类统计并基于此生成了误差分布曲线,进而根据偶然误差的分布特征结合台站周边历史地震进行了数据趋势异常分析。结果表明,房山台站2015-2016年1-2测段与2-3测段均存在一定的数据趋势异常,考虑与其临近区域近期频繁的地震活动有所关联。
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Analysis of measured data anomalies of seismostation based on statistical errors
Abstract:In order to make deep analysis on trend anomalies of the measured data of seismostation, this paper used statistical method to calculate all errors of the measured data including elevation differences when going to and returning back and the average elevation differences of surveying segments of Fangshan seismostation for the year 2013-2016, and based which errors distribution curves were extracted so as to analyze trend anomalies of the measured data according to distribution features of accidental errors and historical earthquakes of the area. The result proved that the measured data of 1-2 and 2-3 surveying segments of Fangshan seismostation for the year 2015-2016 revealed some trend anomalies probably related to currently frequent earthquake activities of the area to a certain extant.
Keywords: surveying and mapping seismostation statistical error error interval data anomalies earthquake
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