摘  要
根據(jù)可控源音頻大地電磁法（CSAMT）的原理和方法，對(duì)觀測(cè)數(shù)據(jù)進(jìn)行平滑、極化視電阻率的識(shí)別、靜態(tài)校正、空間濾波等處理，取得可靠的張量阻抗要素、視電阻率、相位及其他有關(guān)的大地電磁響應(yīng)函數(shù)，供資料解釋使用。并對(duì)可控源音頻大地電磁法的用處及其國(guó)內(nèi)外發(fā)展現(xiàn)狀進(jìn)行了分析，對(duì)可控源音頻大地電磁法資料處理的步驟以及可控源音頻大地電磁法,山下非遠(yuǎn)場(chǎng)改正法進(jìn)行了的簡(jiǎn)單的論述，重點(diǎn)對(duì)可控源音頻大地電磁法靜態(tài)校正的方法和原理進(jìn)行闡述。在處理實(shí)例的過程中，利用MTSoft2d 軟件，對(duì)實(shí)測(cè)數(shù)據(jù)進(jìn)行編輯平滑、曲線擬合、靜態(tài)校正等預(yù)處理和定量反演解釋，利用surfer軟件對(duì)反演結(jié)果進(jìn)行成圖，并作出資料解釋。

關(guān)鍵詞： CSAMT；視電阻率；靜態(tài)校正；MTSoft2d。

Processing Data by the Application of Controlled Source Audio-frequency Magnetotellurics Sounding

Abstract: Based on the methods and theories of CASMT, the author has acquired reliable tensor impedance elements, apparent resistivity, phase and other relevant Mt response functions for this thesis writing trough a comprehensive analyzing and smooth processing of the data that has been collected, plus recognition of the polarization apparent resistivity, static correction and spatial filtering. Furthermore, this paper analyzes the application and development of CASMT both domestic and abroad, and briefly discusses the CSAMT and near field method. This article also makes an elaborate explanation of smooth processing of the data, recognition of the polarization apparent resistivity, static correction and spatial filtering. The author also does a lot of work on data processing and furthermore inversion analysis by the use of MTSoft2d, and mapping the outcome with the help of Surfer. And finally makes a relevant geological interpretation.

Key words: CSAMT; apparent resistivity; static correction; MTSoft2d.

目錄

可控源音頻大地電磁法資料處理 i
摘  要 i
Abstract ii
第一章 前言 1
1.1 論文研究目的和意義 1
1.2 國(guó)內(nèi)外研究發(fā)展現(xiàn)狀 1
1.3 論文研究?jī)?nèi)容和思路 3
第二章 CSAMT方法原理 4
2.1 可控源音頻大地電磁法（CSAMT） 4
2.2 CSAMT法的采集系統(tǒng) 5
第三章 CSAMT資料處理 8
3.1 數(shù)據(jù)平滑 8
3.2 CSAMT靜態(tài)效應(yīng)校正 9
3.3 CSAMT山下非遠(yuǎn)場(chǎng)改正法 20
第四章 應(yīng)用實(shí)例 22
4.1 利用MTsoft2D軟件處理數(shù)據(jù) 22
4.2 預(yù)處理前后對(duì)比 32
4.3 surfer成圖及資料解釋 36
結(jié)  論 38
致  謝 39
參考文獻(xiàn) 40