強(qiáng)衰減條件下能量比法的修正及其應(yīng)用
發(fā)布時間:2018-10-14 19:36
【摘要】:吸收衰減是引起地震波能量損失的一個重要因素,尤其是在近地表強(qiáng)衰減條件下。常規(guī)的能量比法是利用地震波能量的線性衰減速率定量估測品質(zhì)因子Q,不適用于近地表的強(qiáng)衰減(Q小于30)情況;修正的能量比法利用地震波能量的指數(shù)衰減速率估算Q值,減小了常規(guī)方法的理論誤差,適用于近地表?xiàng)l件。仿真模型和實(shí)際資料處理結(jié)果表明,在非固有衰減(主要為幾何擴(kuò)散)得到較好補(bǔ)償?shù)那疤嵯?修正能量比法估算的近地表Q值合理、可靠,具有實(shí)用性。
[Abstract]:Absorption attenuation is an important factor that causes the energy loss of seismic waves, especially under the condition of strong attenuation near the surface. The conventional energy ratio method uses the linear attenuation rate of seismic wave energy to quantitatively estimate the quality factor Q, which is not suitable for the strong attenuation near the surface (Q < 30), and the modified energy ratio method uses the exponential attenuation rate of seismic wave energy to estimate the Q value. The theoretical error of the conventional method is reduced, and it is suitable for near-surface conditions. The simulation model and the actual data processing results show that the modified energy ratio method is reasonable, reliable and practical on the premise that the non-inherent attenuation (mainly geometric diffusion) is well compensated.
【作者單位】: 中國石油新疆油田公司勘探開發(fā)研究院地球物理研究所;
【分類號】:P631.4
本文編號:2271439
[Abstract]:Absorption attenuation is an important factor that causes the energy loss of seismic waves, especially under the condition of strong attenuation near the surface. The conventional energy ratio method uses the linear attenuation rate of seismic wave energy to quantitatively estimate the quality factor Q, which is not suitable for the strong attenuation near the surface (Q < 30), and the modified energy ratio method uses the exponential attenuation rate of seismic wave energy to estimate the Q value. The theoretical error of the conventional method is reduced, and it is suitable for near-surface conditions. The simulation model and the actual data processing results show that the modified energy ratio method is reasonable, reliable and practical on the premise that the non-inherent attenuation (mainly geometric diffusion) is well compensated.
【作者單位】: 中國石油新疆油田公司勘探開發(fā)研究院地球物理研究所;
【分類號】:P631.4
【相似文獻(xiàn)】
相關(guān)期刊論文 前8條
1 ;點(diǎn)亮“核太陽”[J];新知客;2008年03期
2 蔣立;王曉;木圖拉;張龍;王在民;;小波分頻自適應(yīng)檢測與壓制強(qiáng)能量干擾方法[J];天然氣工業(yè);2007年S1期
3 鄭江龍;許江;;能量差法拾取直達(dá)波初至的應(yīng)用研究[J];工程地球物理學(xué)報;2013年06期
4 張?jiān)i;梁晨;吳文佳;;基于QT的能量比法地震波初至拾取系統(tǒng)設(shè)計(jì)[J];石油地球物理勘探;2010年01期
5 王婷婷;邊銀菊;張博;;地震與爆破的小波包識別判據(jù)研究[J];地震學(xué)報;2014年02期
6 ;為什么微波爐在短時間內(nèi)可以烹熟食物[J];科學(xué)大眾(小學(xué)版);2014年04期
7 張揚(yáng)健;杭慶平;;迭加原理中振幅與能量的一致性[J];揚(yáng)州師院學(xué)報(自然科學(xué)版);1988年Z1期
8 ;[J];;年期
相關(guān)碩士學(xué)位論文 前1條
1 馮亞楠;基于小波域Teager能量熵的音符起點(diǎn)檢測算法研究[D];天津大學(xué);2012年
,本文編號:2271439
本文鏈接:http://sikaile.net/kejilunwen/diqiudizhi/2271439.html
最近更新
教材專著