地震地磁观测与研究
地震地磁觀測與研究
지진지자관측여연구
SEISMOLOGICAL AND GEOMAGNETIC OBSERVATION AND RESEARCH
2014年
3期
63-70
,共8页
董春丽%苗春兰%吕睿%穆慧敏%张玲%王卓君
董春麗%苗春蘭%呂睿%穆慧敏%張玲%王卓君
동춘려%묘춘란%려예%목혜민%장령%왕탁군
应力降%震源破裂尺度%拐角频率%震源参数
應力降%震源破裂呎度%枴角頻率%震源參數
응력강%진원파렬척도%괴각빈솔%진원삼수
stress drop%source fracture scale%corner frequency%source parameters
利用“十五”数字化后山西地震台网记录的612次 ML ≥2.0地震,使用中国地震局地震预测研究所推广的中小地震新参数计算软件,计算其中148次事件的震源新参数,对地震矩、矩震级、震源破裂尺度、应力降、拐角频率等参数间的定标关系做初步研究,得出 ML 震级与地震矩、矩震级间存在较好的线性正相关;震级与震源尺度间存在多项式关系;与应力降的对数呈显著正相关,当大于 ML 4.0后,随着震级的增大,释放的应力降略有变缓;与拐角频率的对数呈负相关。
利用“十五”數字化後山西地震檯網記錄的612次 ML ≥2.0地震,使用中國地震跼地震預測研究所推廣的中小地震新參數計算軟件,計算其中148次事件的震源新參數,對地震矩、矩震級、震源破裂呎度、應力降、枴角頻率等參數間的定標關繫做初步研究,得齣 ML 震級與地震矩、矩震級間存在較好的線性正相關;震級與震源呎度間存在多項式關繫;與應力降的對數呈顯著正相關,噹大于 ML 4.0後,隨著震級的增大,釋放的應力降略有變緩;與枴角頻率的對數呈負相關。
이용“십오”수자화후산서지진태망기록적612차 ML ≥2.0지진,사용중국지진국지진예측연구소추엄적중소지진신삼수계산연건,계산기중148차사건적진원신삼수,대지진구、구진급、진원파렬척도、응력강、괴각빈솔등삼수간적정표관계주초보연구,득출 ML 진급여지진구、구진급간존재교호적선성정상관;진급여진원척도간존재다항식관계;여응력강적대수정현저정상관,당대우 ML 4.0후,수착진급적증대,석방적응력강략유변완;여괴각빈솔적대수정부상관。
In this paper,mainly using 612 earthquake events of ML ≥2.0 recorded by Shanxi digital network in “the tenth-five year plan,”and the calculation software provided by China seis-mological bureau earthquake prediction research institute for small and medium-sized earth-quake new parameter,the new source parameters of 148 events are calculated,a primary re-search on scaling relation among parameters of seismic moment,moment magnitude,source fracture scale,stress drop,corner frequency etc are made.The concludes are that ML has well linear positive correlation with seismic moment and moment magnitude;polynomial re-lationship with source scale;obviously positive correlation with the logarithm of stress drop, which will be released a little more slowly with the increase of the magnitude if ML ≥4.0;negative correlation with the logarithm of corner frequency.This result does not show signif-icant relationship between stress drop and source scale.But from here we can have more thoughts,giving new theoretical explanation of two controversial earthquake events.