(1. 中國科學院 地質(zhì)與地球物理研究所 礦產(chǎn)資源研究重點實驗室，北京 100029；
2. 江蘇大學 計算機科學與通信工程學院，鎮(zhèn)江 212013)
摘 要: 為了解決大深度、高分辨探測地下礦產(chǎn)資源的難點問題,基于近區(qū)測深的優(yōu)越性，提出一種電性源短偏移瞬變電磁裝置(SOTEM)，并對該裝置下的探測技術(shù)進行研究。通過對時間域近場響應(yīng)特性以及探測深度等面探測能力的分析，認為SOTEM明顯優(yōu)于長偏移瞬變電磁(LOTEM)。接地線源短偏移瞬變電磁法比回線源瞬變電磁法易于施工，且探測深度較大和探測精度相對較高,是一種值得推廣的方法。
關(guān)鍵字: 電性源；瞬變電磁法；短偏移；全場域；響應(yīng)
（1. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics,
Chinese Academy of Sciences, Beijing 100029, China;
2. School of Computer Science and Telecommunication Engineering, Jiangsu University, Zhenjiang 212013, China）
Abstract:In order to solve the problem of detecting of underground deep ore target with high-resolution, based on the advantage of near field survey, a new configuration named as wire-source with short-offset TEM (SOTEM) was proposed for deep detection and the detecting technique was studied. After analyzing the detection ability of this system, such as time-domain response, as well as detecting depth, the conclusion can be drawn that this kind of configuration has more merit than long-offset TEM(LOTEM). The proposed method is easier to operate and can be used to obtain larger detecting depth and higher detecting accurate. It also shows that SHOTEM is a kind of method worth to be developed.
Key words: grounded wire source; TEM; short-offset; whole field area; response
