CAJ | 학술논문

应用泰勒多项式和曲面样条函数法建立了我国地电场观测台网中华东、华北两个区域台网的地电场日变化（K p ≤5）模型，并对拟合结果进行了对比分析。结果表明：①尽管地电场变化复杂，但用这两种方法建立的日变化模型相当吻合，模型曲线随时间的变化符合样本曲线随时间的变化；②用模型曲线可以描述其它年份同农历日期、同等磁情时实测的地电场日变化；③用模型曲线描述实测地电场日变化时，低磁情时得出的结果要优于高磁情时的结果；④用多日样本曲线得到的模型曲线更能清晰地展示出地电场日变化的两次起伏波形、幅度以及极值集中在午前午后等变化特点。今后建立全国各区域台网不同磁情、不同农历日期的地电场日变化模型可定量评价区域台网的地电场观测资料的质量，同时根据该模型能够分离出地电场的非正常变化，进而研判真实的异常，以服务于地震等灾害事件的预测以及地球电磁环境变化的监测等方面。
응용태륵다항식화곡면양조함수법건립료아국지전장관측태망중화동、화북량개구역태망적지전장일변화（K p ≤5）모형，병대의합결과진행료대비분석。결과표명：①진관지전장변화복잡，단용저량충방법건립적일변화모형상당문합，모형곡선수시간적변화부합양본곡선수시간적변화；②용모형곡선가이묘술기타년빈동농력일기、동등자정시실측적지전장일변화；③용모형곡선묘술실측지전장일변화시，저자정시득출적결과요우우고자정시적결과；④용다일양본곡선득도적모형곡선경능청석지전시출지전장일변화적량차기복파형、폭도이급겁치집중재오전오후등변화특점。금후건립전국각구역태망불동자정、불동농력일기적지전장일변화모형가정량평개구역태망적지전장관측자료적질량，동시근거해모형능구분리출지전장적비정상변화，진이연판진실적이상，이복무우지진등재해사건적예측이급지구전자배경변화적감측등방면。
The planar and time-varying models (geomagnetic index K p ≤5 )of the daily variation of the geo-electric field in two regional geo-electric networks in East China and North China are built up based on the Taylor polynomial and surface spline function methods,respectively.Then the fitting results are com-pared and analyzed.The results show that although the geo-electric field varia-tion is more complex,the models of the daily variation fitted by the two methods are identical to each other,and the two model curves are consistent with the measured sample curves with the variation of time.The two model curves could be used to describe the measured daily variation on the same lunar date in other years with the similar geomagnetic index K p .The daily variation results based on the two models on the condition of a low geomagnetic index are better than that on a high geomagnetic index.The average model curves based on multi-day sample curves more clearly show the daily variation features of geo-electric field such as the twice fluctuation waveform in some day and its amplitude and the extreme value concentrating on before and after noon.It is important to establish the daily variation models of geo-electric field for the different lunar date in the different geomagnetic indices in each regional network.The models can be used to quantitatively evaluate the quality of obser-vation data of regional geo-electric field networks,and the geo-electric field anomaly measured by the networks can be picked up based on these models, which can be applied to prediction of disasters like earthquakes and monitoring the changes in the electromagnetic environment.