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前震序列与前兆震群及非前兆震群的计算机识别 总被引:2,自引:0,他引:2
本文介绍了一个挑选前震序列及震群的专家系统,它能自动地从地震目录中筛选出前震序列及震群目录,计算相应的地震活动参数,进行前震列,前兆震群,非前兆震群的自动识别,同时本文对这个系统进行了评估。 相似文献
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研究了从天然地震和人工爆破事件的波形记录中提取出来的能量比特征在天然地震和人工爆破事件的自动识别中的有效性及适用性。对波形记录进行了4层小波变换,然后对变换得到的小波系数提取能量比特征,最后利用支持向量分类机ν-SVC进行识别效果检验。实验证明,由bior2.2小波包分解后提取出来的能量比特征对天然地震和人工爆破事件的识别效果很好,可用于实际的自动识别系统作为识别判据之一。 相似文献
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本文对利用强震近场加速度记录确定时,空、强三个完整的震源参数。文中给出一种利用计算机自动识别地震记录的P波初动到时和S波震相到的算法。根据新近发表的Wood-Anderson地震仪器的最新参数,修牍正唐山地区量规函数。利用唐 山数字震观测台阵得到的近场加速度数据,计算了10次地震的震源位置和震级,并对定位误差进行了综合分析,将强震台网测定的震源参数与地震台 相似文献
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介绍福建数字地震台网地震速报信息发布程序的主要功能,及开发程序所涉及的几项技术,这些技术包括在英文操作系统中显示中文、用计算机发送手机短信和震中地名自动识别等。 相似文献
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A fast automatic identification method for seismic belts based on distance correlation and its earthquake case*
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Earthquake prediction practice and a large number of earthquake cases show that anomalous images of small earthquake belts may appear near the epicenter before strong earthquakes. Through the research of earthquake cases, researchers have a relatively consistent method to determine the clarity of an identified seismic belt, but there is still a lack of method on seismic belt identification from the distribution of scattered points. Due to the complexity of exhaustive algorithm, the rapid automatic identification technique of seismic belts has been progressing slowly. Visual recognition is still the basic method of seismic belt identification. Based on the algorithm of distance correlation, this paper presents a fast automatic identification method of seismic belts. The effectiveness of this method was proved by 100 random earthquakes and an example of seismic belts of magnitude 4.0 before the 2005 Jiujiang M5.7 earthquake. The results show that: ① the automatic identification of seismic belts should first identify the “relational earthquake”, then identify the “suspected seismic belt”, and finally use the criterion of seismic belt clarity to determine; ② random earthquakes and real earthquakes identification results show that the distance correlation method can realize the fast automatic identification of seismic belts by computer. 相似文献
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HUANG Zhibin 《中国地震研究》2020,34(2):219-226
This paper summarizes the different stages of the development of earthquake automatic quick report in China. In early stage, scientists and technicians mainly focused on the realization of automatic identification of seismic phases and automatic positioning in the network data processing system. Then, at the end of the Tenth "Five-Year Plan" project, Fujian Earthquake Agency, Guangdong Earthquake Agency, and China Earthquake Networks Center have independently developed their earthquake automatic quick report systems. Later, by taking advantage of the "multi-channel comprehensive trigger" mechanism, China Earthquake Networks Center has innovated a comprehensive trigger system for automatic earthquake quick report, whereby earthquake information can be instantly reported and presented on Weibo, Wechat, and CENC App. 相似文献
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应用Myeclipse开发平台,以Java为主流开发语言,采用基于角色权限动态分配技术,结合地震速报管理规定,研发海南省地震局地震速报短信自动上网系统。该系统的实现在降低手动输入带来错误的同时,减轻工作量,提高工作效率。该项工作的实施,实现了海南省地震局地震信息自动上传互联网零的突破。 相似文献
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地震应急是我国防震减灾工作3大体系之一,鉴于地震预报尚不过关,在没有作出临震预报而地震突然发生时,为在灾区进行有效的救援而采取的紧急行动.通信、计算机等新技术是地震应急指挥和救援工作顺利进行的重要保证,无线局域网是计算机网络与无线通信技术相结合的产物,无线局域网利用了无线多址信道的一种有效方法来支持计算机之间的通信,本文根据新疆地震局地震应急现场工作情况,阐述无线局域网在地震应急现场中的应用,讨论了地震应急现场所适应的几种无线局域网的组网模式. 相似文献
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含速度大脉冲的强地震动具有复杂的特性,人工提取速度大脉冲特征的方法较繁琐,故利用卷积神经网络(CNN)在图像特征自动提取方面的优势,提出基于卷积神经网络图像识别的速度大脉冲识别方法。基于美国太平洋地震工程研究中心NGA-West1数据库提供的强地震动记录,筛选出6 000条非脉冲记录和91条含有速度大脉冲的强地震动记录。采用在原始记录中加入高斯噪声和过采样的方法,使2类记录样本数量达到均衡。利用本文建立的卷积神经网络模型对2类记录速度时程图进行特征自动提取和分类识别,结果显示测试集准确率为99%,表明本文卷积神经网络模型能够自动提取速度大脉冲特征,进而复现已有结果。将本文方法与传统方法进行了对比,结果表明,对含有多个速度脉冲的强地震动记录的识别,本文方法优于传统方法,具有较高的可靠性、鲁棒性、灵活性。 相似文献
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A. A. Stepnov A. V. Konovalov A. V. Gavrilov K. A. Manaychev 《Seismic Instruments》2017,53(4):267-279
Experience in introduction of an automatic system of earthquake source parameter calculation based on an existing seismic network is described. Open source software products for automatic seismic data processing are reviewed. Methods for real-time waveform stream processing are discussed in detail. Parameters of some subroutines of the system are described. Information flows and data life cycle in the developed automatic system are outlined. Earthquake location errors in the system are analyzed. The detection capability of seismic networks is evaluated. 相似文献