贵州地质
貴州地質
귀주지질
GUIZHOU GEOLOGY
2011年
4期
295-299,259
,共6页
地震%能量释放%时空分布规律%贵州
地震%能量釋放%時空分佈規律%貴州
지진%능량석방%시공분포규률%귀주
earthquake%energy release.spatial and temporal distribution%Guizhou
如果以垭都—紫云—罗甸断裂带北东侧为界将贵州省分为A、B两个区域,则:①地震在A区分布较为密集,而在B区分布较为稀散。单位国土面积上释放的地震能量,前者比后者要大一个数量级,反映两者在力学性质上存在较大差异。②A区地震释放能量在深度约5.5km处突然出现一个高达2个数量级的跃升,在深度约7 km处回落到接近跃升前的位置,而后又逐渐下降,反映该区域5.5~7 km深度地层的力学强度较低。③贵州地震释放能量总体似乎呈周期性变化,变化周期在11~15年间变动。A、B两区域地震释放能量的高峰年有此消彼长的现象,即A区出现地震活动高峰时,B区相对比较平静;而B区出现地震活动高峰时,A区相对比较平静。
如果以埡都—紫雲—囉甸斷裂帶北東側為界將貴州省分為A、B兩箇區域,則:①地震在A區分佈較為密集,而在B區分佈較為稀散。單位國土麵積上釋放的地震能量,前者比後者要大一箇數量級,反映兩者在力學性質上存在較大差異。②A區地震釋放能量在深度約5.5km處突然齣現一箇高達2箇數量級的躍升,在深度約7 km處迴落到接近躍升前的位置,而後又逐漸下降,反映該區域5.5~7 km深度地層的力學彊度較低。③貴州地震釋放能量總體似乎呈週期性變化,變化週期在11~15年間變動。A、B兩區域地震釋放能量的高峰年有此消彼長的現象,即A區齣現地震活動高峰時,B區相對比較平靜;而B區齣現地震活動高峰時,A區相對比較平靜。
여과이오도—자운—라전단렬대북동측위계장귀주성분위A、B량개구역,칙:①지진재A구분포교위밀집,이재B구분포교위희산。단위국토면적상석방적지진능량,전자비후자요대일개수량급,반영량자재역학성질상존재교대차이。②A구지진석방능량재심도약5.5km처돌연출현일개고체2개수량급적약승,재심도약7 km처회락도접근약승전적위치,이후우축점하강,반영해구역5.5~7 km심도지층적역학강도교저。③귀주지진석방능량총체사호정주기성변화,변화주기재11~15년간변동。A、B량구역지진석방능량적고봉년유차소피장적현상,즉A구출현지진활동고봉시,B구상대비교평정;이B구출현지진활동고봉시,A구상대비교평정。
If Guizhou province is divided into A and B region from the northeast Yadu-Ziyun-Luodian faulted zone,the earthquake distribution dense in A region is one order of magnitude more than B region,the difference of echanical property is reflected.The earthquake energy release in A region raises 2 order of magnitude in the depth of about 5.5km,return in the depth of 7km and falls slowly,the mechanic intensity is low in the depth of 5.5 to 7km.Generally,the variation of the released earthquake energy is periodic,the period is about 11 to 15 years.The rush year of earthquake energy released in A and B eliminate each other: when the earthquake rush year appears in A region,B region is quite,but A region is quite when the earthquake rush year appears in Bregion.