山西地震
山西地震
산서지진
EARHTQUAKE RESEARCH IN SHANXI
2014年
2期
29-32
,共4页
山西地震台网%最小完整性震级%基于概率的完整性方法
山西地震檯網%最小完整性震級%基于概率的完整性方法
산서지진태망%최소완정성진급%기우개솔적완정성방법
Shanxi seismic network%Minimum magnitude of completeness%Probability-based magnitude of completeness
该研究运用国际上新近发展的“基于概率的完整性震级”(PM C )方法,计算获得山西及邻区区域地震台网44个台站对周边地震事件的检测概率及台网检测概率。发现,因台网布局等影响,山西中部断陷盆地展布区域及两侧隆起区大部分地区的最小完整性震级为 MP ≤1.5,山西西部边缘地区和最北端与内蒙古自治区、河北省交界地区震级达到1.5≤ MP ≤2.0,山西最南端的晋陕交界 MP 为3.0级左右。研究表明,为进一步提高山西地区整体监测能力,在山西西部边缘地区、最北端和最南端可增设台站或引入更多邻省台站。
該研究運用國際上新近髮展的“基于概率的完整性震級”(PM C )方法,計算穫得山西及鄰區區域地震檯網44箇檯站對週邊地震事件的檢測概率及檯網檢測概率。髮現,因檯網佈跼等影響,山西中部斷陷盆地展佈區域及兩側隆起區大部分地區的最小完整性震級為 MP ≤1.5,山西西部邊緣地區和最北耑與內矇古自治區、河北省交界地區震級達到1.5≤ MP ≤2.0,山西最南耑的晉陝交界 MP 為3.0級左右。研究錶明,為進一步提高山西地區整體鑑測能力,在山西西部邊緣地區、最北耑和最南耑可增設檯站或引入更多鄰省檯站。
해연구운용국제상신근발전적“기우개솔적완정성진급”(PM C )방법,계산획득산서급린구구역지진태망44개태참대주변지진사건적검측개솔급태망검측개솔。발현,인태망포국등영향,산서중부단함분지전포구역급량측륭기구대부분지구적최소완정성진급위 MP ≤1.5,산서서부변연지구화최북단여내몽고자치구、하북성교계지구진급체도1.5≤ MP ≤2.0,산서최남단적진협교계 MP 위3.0급좌우。연구표명,위진일보제고산서지구정체감측능력,재산서서부변연지구、최북단화최남단가증설태참혹인입경다린성태참。
The method of“probability-based magnitude of completeness”(PMC) is applied to calculate detecting probability of 44 sta-tions of Shanxi and its adjacent seismic networks for surrounding seismic events .It is found that the minimum magnitude of com-pleteness MP ≤1 .5 for areas of Shanxi rift basin and most uplifts of both sides of the basin ;while 1 .5≤ MP ≤2 .0 for areas of west-ern edge of Shanxi Province and juncture of northernmost Shanxi ,Inner Mongolia and Hebei Province and MP is about 3 .0 for junc-ture area of southernmost Shanxi and Sha’anxi Province .The study indicates that more stations should be added in western ,north-ernmost and southernmost Shanxi Province or more stations in neighboring provinces should be introduced to improve earthquake monitoring capability for Shanxi .