Combining multiple components of InfiniTEM® electromagnetic data to better represent subsurface anomalies

结合 InfiniTEM® 电磁数据的多个组成部分以更好地表示地下异常

• 批准号: 401578-2010
• 负责人: Farquharson, Colin
• 金额: $ 0.55万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=487811
• 关键词: Combining; multiple; components; InfiniTEM; electromagnetic

Abitibi Géophysique, inc., have developed from existing technology a new system, called InfiniTEM®, for mineral exploration. The system is designed to locate and delineate metallic ore deposits in Canada. The InfiniTEM system is a time-domain electromagnetic system. A time-varying electric current flows in a transmitter loop laid out on the ground. This time-varying current creates a time-varying magnetic field, and this magnetic field induces electric currents to flow in geological features, such as metallic ore deposits, that have relatively high electrical conductivities. The effects of the induced currents can be sensed at the surface, thus revealing the presence of an ore body. The presence of a conductive geological feature manifests itself in InfiniTEM data in the form of a complicated, positive-to-negative signature. Such signatures are difficult for the non-specialist to interpret. The goal of this project, therefore, is to develop a data processing technique that will transform the complicated, dipolar InfiniTEM signature of a conductor into a single, simple, consistent peak.

Abitibi Géophysique，Inc.利用现有技术开发了一种名为InfinItem®的新系统，用于矿产勘探。该系统旨在定位和圈定加拿大的金属矿藏。无限项系统是一个时间域电磁系统。一个时变的电流在地面上铺设的发射机环路中流动。这种随时间变化的电流产生一个随时间变化的磁场，该磁场感应电流在具有相对较高电导率的地质地貌中流动，例如金属矿床。在地表可以感觉到感应电流的影响，从而揭示了矿体的存在。导电地质特征的存在在无限项数据中以复杂的、从正到负的签名的形式表现出来。对于非专业人士来说，这样的签名很难理解。因此，该项目的目标是开发一种数据处理技术，将导体复杂的偶极无穷大项签名转换为单一、简单、一致的峰。