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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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地震波质心频率变化规律
Keywords: 质心频移式,质心频率,线性衰减,双曲衰减,品质因子
Abstract:
？文中阐述了地震波吸收衰减的基本理论,将质心频移式分为高斯型质心式、匹配型质心式、雷克型质心式、加权型质心式、加权型质心变式、脉冲型质心式和泰勒型质心式,通过模型及实际测试,得到如下认识:①当传播时间较小时,质心频率随传播时间(距离)近似呈线性衰减;当传播时间较大时,质心频率随传播时间(距离)近似呈双曲衰减.②衰减速度由品质因子q决定,即q值越大,衰减越慢,反之亦然.③高斯型、泰勒型质心式q值曲线在传播时间较小时具有较高精度,随着传播时间的增加逐渐偏离真实值;加权型质心式q值曲线对源谱的拟合要求较高,即当拟合效果较好时,精度较高,且基本不受传播时间影响,当拟合效果较差时,误差较大;雷克型、脉冲型质心式和加权型质心变式q值曲线的精度相对较低.
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|
| [7] | mazhaojun,liuyang.asummaryofresearchonseismicattenuation.progressingeophysics,2005,20(4):1074-1082.
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| [8] | 李振春,王清振.地震波衰减记录及能量补偿研究综述[j].地球物理学进展.2007,22(4):1147-1152
|
| [9] | lizhenchun,wangqingzhen.areviewofresearchonmechanismofseismicattenuationandenergycompensation.progressingeophysics,2007,22(4):1147-1152.
|
| [10] | 武银婷,朱光明,刘伊克等.零偏vsp反演q值cfs方法及影响因素研究.地球物理学进展,2010,25(6):1897-1904.
|
| [11] | wuyinting,zhuguangming,liuyikeetal.studyoncfsmethodinqinversionusingzero-offsetvspdata.progressingeophysics,2010,25(6):1897-1904.
|
| [12] | 曹思远,谭佳,高明等.对数谱根式法q值反演[j].石油地球物理勘探.2014,49(1):161-166？？浏览
|
| [13] | gaojinghuai,yangsenlin,wangdaxing.qualityfactorextractionusinginstantaneousfrequencyatenvelopepeakofdirectwavesofvspdata.chinesejournalofgeophysics,2008,51(3):853-861.
|
| [14] | tun.[j].luwk.animprovedpeak-frequency-shiftmethodforqestimation.cps/seginternationalgeophysicalconference&exposition,beijing.1218,2009:-
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|
| [18] | 赵宁,曹思远,王宗俊等.频域统计性属性组合提取品质因子q[j].石油地球物理勘探.2013,48(4):545-552？？浏览
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| [20] | 曹思远,赵宁,袁殿等.地震波品质因子研究新方法.中国地球物理年会论文集.安徽合肥:中国科学技术大学出版社,2012,454.
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| [21] | 赵静,高静怀,王大兴等.利用叠前cmp资料估计介质品质因子.地球物理学报,2013,56(7):2413-2428.
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| [23] | gaojh,yangsl,wangdx.estimationofqualityfactorqfromtheinstantaneousfrequencyattheenvelopepeakofaseismicsignal[j].journalofcomputationalacoustics.2011,19(2):155-179
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|
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