共查询到20条相似文献，搜索用时 78 毫秒
1.
2.
3.
4.
福建省水氡观测资料变化规律与稳定性评定 总被引：1，自引：0，他引：1
对福建省水氡观测资料变化规律进行了分析,并利用相对均方差、拟合噪声水平和相对年变幅三项指标,对福建省8个水氡点的观测资料的稳定性进行了评定。 相似文献
5.
通过对应变资料和气压资料的频谱分析，将固体潮频段的信息分别提取出来，再进行相关分析，二者显示出了很强的线性相关性。据此，对应变观测资料进行了气压改正，使应变固体潮调和分析的各项精度指标有了明显的提高，指出该方法的实用效果，同时，对气压改正中存在的问题也进行了讨论 相似文献
6.
7.
8.
利用小波网络,对地震资料和小波多尺度分解属性资料,进行了虚井声波时差反演.讨论了利用地震信号的小波分解和网络学习、训练的理论方法.为了提高反演分辨率和精度，研究了信号分段相似小波时—频分析技术方法.在对对这些技术方法综合研究和算法的实现设计以后，对实际资料进行了反演计算，并对反演结果进行验证.取得了很好的效果. 相似文献
9.
基于非线性数学方法,利用录井信息对储层水淹程度进行综合定量评价,是油藏开发方案设计和提高采收率研究等领域的重要研究内容.本文推导了水淹层录井评价的非线性理论模型,编制了水淹层评价软件.结合密闭取心资料,利用编制的软件对地化分析资料、热蒸发烃色谱资料、定量荧光分析资料、核磁共振录井资料、显微荧光薄片资料的水淹响应特征及规律进行分析研究,得到较好的结果. 相似文献
10.
11.
本文对大地电磁阻抗相位资料的性质及其意义作了总结和评述。文中述及的阻抗相位资料正则化反演方法,是在文献〔1〕的基础上进行了改进,笔者就此给出了实际算例和概要分析 相似文献
12.
13.
新丰江地震目录数据库录入了１９６０—１９６９年新丰江水库区的地震目录共计３１３００条。数据库管理系统中的震中位置由直角座标转换为用经纬度表示，具有地震目录检索和统计２大功能，并针对新丰江地震的分区研制了专用软件模块。该系统采用模块化分层结构，增加了软接口，为系统的扩充和拓展打下了基楚。 相似文献
14.
文中介绍了一个新的引潮位展开,含有潮波3070项及一些新的信息;潮波振幅给至小数点后第6位.为了与精密引潮位比较,专门建立了一套标准数据,其精度为±0.001μGal.按照这一标准数据,我们评价了精密引潮位展开的精度,并给出了其余差及功率谱分析的结果.结果表明,对于潮汐重力,精密引潮位展开的精度,可达±0.005μGal. 相似文献
15.
16.
本文介绍了固体潮观测数据的平滑检验和NAKAI法检验之方法原理和具体应用。平滑检验可以有效地监测並改正观测数据中的随机错误,突跳或坏读数;经平滑改正后,可使观测数据的读数误差小于1毫米。用NAKAI(1975)提出的方法检验观测数据可以监测仪器灵敏度变化情况和数据质量好坏,根据该检验计算获得的有关参数(主要是漂移系数和方差)剔除质量不好的48小时数据组或修正某些质量不好的数据可提高调和分析结果的精度。 相似文献
17.
CHANNEL EVOLUTION AFTER THE CONSTRUCTION OF THE 1ST PHASE OF THE DEEPWATER CHANNEL PROJECT OF THE YANGTZE ESTUARY 总被引：1，自引：0，他引：1
Hualin WU Huanting SHEN Yonghong WANG 《国际泥沙研究》2006,21(2):158-165
1 INTRODUCTION Among the world's rivers, the Yangtze River ranks third in length, fifth in average water discharge at its mouth, and fourth in suspended sediment discharge (Shen et al., 1983). The huge suspended load has created a bar system with heights greater than 10 m below sea level extending over 40 km along each waterway in the Yangtze Estuary (Milliman et al.,1985). Natural evolution of the sand bars has been studied by many scientists and engineers (Prichard, 1967; Ludwig and … 相似文献
18.
19.
THE RESEARCH OF THE SEISMOGENIC STRUCTURE OF THE LUSHAN EARTHQUAKE BASED ON THE SYNTHESIS OF THE DEEP SEISMIC DATA AND THE SURFACE TECTONIC DEFORMATION 
下载免费PDF全文
下载免费PDF全文 WANG Lin ZHOU Qing-yun WANG Jun LI Wen-qiao ZHOU Lian-qing CHEN Han-lin SU Peng LIANG Peng 《地震地质》2016,38(2):458-476
The seismogenic structure of the Lushan earthquake has remained in suspensed until now. Several faults or tectonics, including basal slipping zone, unknown blind thrust fault and piedmont buried fault, etc, are all considered as the possible seismogenic structure. This paper tries to make some new insights into this unsolved problem. Firstly, based on the data collected from the dynamic seismic stations located on the southern segment of the Longmenshan fault deployed by the Institute of Earthquake Science from 2008 to 2009 and the result of the aftershock relocation and the location of the known faults on the surface, we analyze and interpret the deep structures. Secondly, based on the terrace deformation across the main earthquake zone obtained from the dirrerential GPS meaturement of topography along the Qingyijiang River, combining with the geological interpretation of the high resolution remote sensing image and the regional geological data, we analyze the surface tectonic deformation. Furthermore, we combined the data of the deep structure and the surface deformation above to construct tectonic deformation model and research the seismogenic structure of the Lushan earthquake. Preliminarily, we think that the deformation model of the Lushan earthquake is different from that of the northern thrust segment ruptured in the Wenchuan earthquake due to the dip angle of the fault plane. On the southern segment, the main deformation is the compression of the footwall due to the nearly vertical fault plane of the frontal fault, and the new active thrust faults formed in the footwall. While on the northern segment, the main deformation is the thrusting of the hanging wall due to the less steep fault plane of the central fault. An active anticline formed on the hanging wall of the new active thrust fault, and the terrace surface on this anticline have deformed evidently since the Quaterary, and the latest activity of this anticline caused the Lushan earthquake, so the newly formed active thrust fault is probably the seismogenic structure of the Lushan earthquake. Huge displacement or tectonic deformation has been accumulated on the fault segment curved towards southeast from the Daxi country to the Taiping town during a long time, and the release of the strain and the tectonic movement all concentrate on this fault segment. The Lushan earthquake is just one event during the whole process of tectonic evolution, and the newly formed active thrust faults in the footwall may still cause similar earthquake in the future. 相似文献