本文關(guān)鍵詞：廣域電磁法一維正反演，由筆耕文化傳播整理發(fā)布。

網(wǎng)友ds6573近日為您收集整理了關(guān)于廣域電磁法一維正反演的文檔，，希望對您的工作和學(xué)習(xí)有所幫助。以下是文檔介紹：分類號U D C密級編號十I軔大學(xué)CENTRAL SOUTH UNIVERSITY碩士學(xué)位論文論文題目.…………莊撼魚確陸=維:垂羼演…………學(xué)科、專業(yè):………….鴉封釜壤:測:復(fù)焦!壑揍本………….研究生姓名:…………………一金蠹盎…………………~導(dǎo)師姓名及專業(yè)技術(shù)職務(wù)…….何縫差一院士…蕊攫…封熬攮………原創(chuàng)性聲明腫ill lJrl!Iif/lll llfll Ifl f FIllY1 720548本人聲明,所呈交的學(xué)位論文是本人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作及取得的研究成果。盡我所知,除了論文中特別加以標(biāo)注和致謝的地方外,論文中不包含其他人已經(jīng)發(fā)表或撰寫過的研究成果,也不包含為獲得中南大學(xué)或其他單位的學(xué)位或證書而使用過的材料。與我共同工作的同志對本研究所作的貢獻(xiàn)均已在論文中作了明確的說明。作者簽名:堡學(xué)位論文版權(quán)使用授權(quán)書本人了解中南大學(xué)有關(guān)保留、使用學(xué)位論文的規(guī)定,即:學(xué)校有權(quán)保留學(xué)位論文并根據(jù)國家或湖南省有關(guān)部門規(guī)定送交學(xué)位論文,允許學(xué)位論文被查閱和借閱;學(xué)�？梢怨紝W(xué)位論文的全部或部分內(nèi)容,可以采用復(fù)印、縮印或其它手段保存學(xué)位論文。同時(shí)授權(quán)中國科學(xué)技術(shù)信息研究所將本學(xué)位論文收錄(來源：[])到《中國學(xué)位論文全文數(shù)據(jù)庫》,并通過網(wǎng)絡(luò)向社會公眾提供信息服務(wù)。作者虢堡新簽丞幽日趔蛑上麟日摘要廣域電磁法(WFEM)是中南大學(xué)何繼善院士最近提出的一種新的人工源頻率域電磁測深法。該方法基于雙極源電磁場表達(dá)式,計(jì)算出精確的廣域視電阻率;可以在廣大的、不局限遠(yuǎn)區(qū)的區(qū)域進(jìn)行觀測,同等收發(fā)距上增大勘探深度;尤其是只需要測量一個(gè)場分量(電分量或磁分量)和同時(shí)測量多個(gè)頻率,從而提高了相對精度和工作效率。本文采用基于高斯克龍羅德正交法則的全局自適應(yīng)積分方式將偶極場表達(dá)式沿長接地導(dǎo)線積分,從而獲得雙極源場,在此基礎(chǔ)上采用逆樣條插值法對廣域視電阻率進(jìn)行計(jì)算,并與卡尼亞視電阻率進(jìn)行對比分析,同時(shí)對電場總場與電場水平分量計(jì)算的視電阻率進(jìn)行了分析對比。進(jìn)一步對雙極源與偶極源的場進(jìn)行定量對比,計(jì)算了非偶極效應(yīng)的誤差范圍,并分析了兩種場源的差異性。在一維正演的基礎(chǔ)上,采用一種收斂速度快、反演精度高的最小二乘反演方法對基于雙極源電場計(jì)算的廣域視電阻率進(jìn)行反演,由于基于雙極源場的視電阻率更能準(zhǔn)確地反映過渡帶和近區(qū)地電斷面(來源：[])電性的垂向變化,不用進(jìn)行近區(qū)和過渡區(qū)校正,避免了校正帶來的誤差,提高了反演精度。論文獲得國家自然基金項(xiàng)目:廣域電磁測深儀的基礎(chǔ)研究(40827002)的資助。關(guān)鍵詞廣域電磁法,非偶極效應(yīng),最4,-乘反演ABSTRACTWide field ic method(WFEM).which is introduced byAcademician Jishan He in Central South University,iS a new controlledsourcesounding method in frequency domain.Based on the bipolarsource field expression,the accurate wide field apparent resistivity hasbeen calculated.For the observations can be conducted in wide field.notlimited to the far f(來源：[])ield.the exploration depth iS increase with the sametransceiver distance.Particularly,we only measure ponent of thefield(electric ponent ic ponent)of thecontrolled source and make the measurement of multiple frequencies atthe same time.Thereby the relative accuracy and efficiency are increased.The bipolar source field has been obtained by the integral of dipolesource field expression along the long grounding wire using agloballyadaptive scheme base(來源：[])d on Gauss.Kronrod rules,and the wide fieldapparent resistivity has been calculated by the inverse spline interpolation,then parison of cagniard apparent has been carried out.Furthermore the apparent resistivity calculated by the electric ponent and the total electric field were analyzed pared.Taking parison to the bipolar source anddipole source field,the errorrange of non·dipole effects has beencalculated.Based on the one-dimensional forward.usin(來源：[])g a fast convergence uracy least squares inversion method to make Inversion of thewide field apparent resistivity calculated based on the bipolar source field.As the electrical vertical changes of the geoelectric section can bereflected by the bipolar source wide field resistivity in the transition zoneand neaL i.e.the near and transition zone correction iS unnecessary,thenthe error

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  本文關(guān)鍵詞：廣域電磁法一維正反演，由筆耕文化傳播整理發(fā)布。