Technical parameters and characters of sampling system determine that seismic wave amplitude recorded by seismograph is approximate relative amplitude. Using these data necessarily leads to serious distortion of inverse parameters. So using Born approximation can only obtain the location of interface even if the earth medium is little disturbance.

采集系統(tǒng)特性和技術(shù)指標(biāo)決定了所記錄的地震波振幅值為近似的相對(duì)振幅99这里还有精品，用這樣的相對(duì)振幅作為地震波參數(shù)反演的振幅真值依據(jù)亚洲欧美日韩91AV，必然導(dǎo)致反演參數(shù)值的嚴(yán)重失真。

Zhang Heng of the Han Dynasty over 1,800 years ago invented a seismograph to determine the location of earthquakes and the celestial globe that showed the movement of the sun, moon and other stars.

漢代張衡發(fā)明了測(cè)定地震方位的地動(dòng)儀和演示日月星辰的渾天儀欧美一级人与嘼视频免费。

Many special mechanical design and application such as missiles and was in the seismograph censer to wait all have originality.

許多專(zhuān)用機(jī)械的設(shè)計(jì)和應(yīng)用欧美日韩a在线，如指南車(chē)、地動(dòng)儀和被中香爐等欧美精品AAAAAAAAA片，均有獨(dú)到之處欧美国产欧美日韩。。xxxx欧美图片。尹人手机在线视频。

The idea of a logarithmic earthquake magnitude scale was first developed by Charles Richter in the 1930's for measuring the size of earthquakes occurring in southern California using relatively high-frequency data from nearby seismograph stations.

以對(duì)數(shù)方式來(lái)記錄地震等級(jí)的概念，最早是由查理斯人人操人人色人人干人人舔。里查德在十九世紀(jì)三十年代提出的亚洲一区二区在线观看免费视频。他當(dāng)時(shí)正在測(cè)量南加里弗利亞的地震等級(jí)，使用的是附近的地震檢測(cè)臺(tái)站的相關(guān)高頻數(shù)據(jù)美女黄毛A片免费观看。

Based on VHZ data recorded by 7 stations of China digital seismograph network for Nov. 14, 2001, earthquake in the west of the Kunlun mountain pass, we extracted spherical mode of 0S4-0S76 of the earth free oscillation using power spectral density estimation. Because the frequency response of seismograph in China digital seismograph network suppress information of solid tide, we do not need to remove the solid tide in our procession.

利用中國(guó)數(shù)字地震臺(tái)網(wǎng)改造后的7個(gè)臺(tái)站的VHZ波形資料国产另类自拍，采用功率譜密度估計(jì)方法，利用中國(guó)數(shù)字地震臺(tái)網(wǎng)地震儀對(duì)低頻信號(hào)壓制的特點(diǎn)国产爱福利一区，在沒(méi)有對(duì)資料去除固體潮影響的情況下男人干男人的黄色视频，提取了2001年11月14日昆侖山口西地震激發(fā)的0S4-0S76地球球型自由振蕩，并與地球初步參考模型的理論自由振蕩周期進(jìn)行對(duì)比啊嗯网站，結(jié)果表明與PREM預(yù)測(cè)的球型自由振蕩周期符合得很好。

China Digital Seismograph Network ; earthquake to the west of the Kunlun mountain pass ; power spectral density estimation ; toroidal free oscillation of the earth

中國(guó)數(shù)字地震臺(tái)網(wǎng)；昆侖山口西地震永久免费AV无码动漫网站在线观看；功率譜密度估計(jì)欧美性色作爱视频；地球環(huán)型自由振蕩

The other problem in seismic inversion is that the frequency information and amplitude real value recorded by seismograph are incomplete and severely absent.

地震波反演的另一個(gè)障礙，主要是所記錄的地震波響應(yīng)中頻率信息及相應(yīng)的振幅真值的不完整與嚴(yán)重缺失免费看a在线。

We developed two kinds of new products for low-power and high-resolution mine shallow seismograph, mine geology detector and mine tunnel predictor. By field experimental verification, they can solve effectively the detecting problem of small geological structure and coal seam thickness around underground coal mine tunnel. Their performance and function of reached or exceeded the level of domestic similar products, and their power consumption (≤4W) is lower than the advanced high-resolution shallow seismographs at home and abroad.

開(kāi)發(fā)出兩款低功耗高分辨率礦井淺層地震儀產(chǎn)品——礦井地質(zhì)探測(cè)儀和礦井巷道超前探測(cè)儀91p人妻，通過(guò)現(xiàn)場(chǎng)試驗(yàn)驗(yàn)證，其可有效地解決煤礦井下巷道四周淺層地質(zhì)小構(gòu)造勘探和煤層厚度探測(cè)問(wèn)題91九色偷情自拍视频，儀器性能和功能達(dá)到或超過(guò)國(guó)內(nèi)同類(lèi)產(chǎn)品水平黄色美女喷水在线观看视频，且儀器的功耗(≤4W)小于國(guó)內(nèi)外先進(jìn)的高分辨率淺層地震儀產(chǎn)品

"Houfeng Seismograph" is the earliest seismograph in the world.

候風(fēng)地動(dòng)儀是世界上最早出現(xiàn)的地震儀。

Due to the demand of the seismograph in the seismologic observation, this thesis proposes the scheme of a kind of digital seismograph with high precision and multi-channel based on the thesis of the virtual instrument.

針對(duì)地震觀測(cè)中對(duì)地震觀測(cè)儀器的要求免费看污网站十八禁永久免费，本文采用了虛擬儀器技術(shù)的思想和方法国产丝袜美腿无码视频，探討并提出了一種高精度多通道地震觀測(cè)儀器的實(shí)現(xiàn)方案。