A Review of the Time-domain Electromagnetic Method: Research Trends and Applications
نویسندگان
چکیده
시간영역 전자탐사법(time-domain/transient electromagnetic, TEM)은 인공적으로 발생시킨 전기장 혹은 자기장을 차단했을 때의 자기장의 시간에 따른 변화를 측정하는 탐사법이다. TEM은 송신원에 전류를 차단한 이후 측정하므로 1차 영향 없이 지하 매질의 정보가 있는 2차장만을 측정하게 된다. 이론적으로는 전도체에 대한 모든 진동수 반응, 즉 천부에서 심부까지의 정보 획득이 가능하다. TEM자료는 겹쌓기(stacking)와 자료보정 과정을 거치게 되며, 수치 모델에 TEM 반응은 유한차분법, 유한요소법, 유한체적법 등의 기법을 이용하여 수치적으로 계산 이 기술보고에서는 TEM의 기본 원리와 탐사 시스템을 코일 송신원과 접지 전선 송신원으로 분류해 소개하였다. 기존의 자료처리와 모델링, 역산에 대해 분석하고 육상과 해양, 항공 전자탐사로 분류하여 다양한 분야에서의 적용사례들에 대해서 소개하고자 한다.
منابع مشابه
A Time-Domain Method for Shape Reconstruction of a Target with Known Electrical Properties (RESEARCH NOTE)
This paper uses a method for shape reconstruction of a 2-D homogeneous object with arbitrary geometry and known electrical properties. In this method, the object is illuminated by a Gaussian pulse, modulated with sinusoidal carrier plane wave and the time domains’ footprint signal due to object presence is used for the shape reconstruction. A nonlinear feedback loop is used to minimize the diff...
متن کاملA Review of the Applications of the Electromagnetic Field in Regenerative Medicine and Cancer Treatment
The term "electromagnetic fields" (EMF) is a combination of electric and magnetic fields as a diagnostic method as well as a therapeutic tool with many advantages such as ease of operation and painlessness, very controllable, which today has found wide application in regenerative medicine and also cancer treatment. In addition to organs such as nerves, hearts, and bones that have an electrica...
متن کاملA Study of Electromagnetic Radiation from Monopole Antennas on Spherical-Lossy Earth Using the Finite-Difference Time-Domain Method
Radiation from monopole antennas on spherical-lossy earth is analyzed by the finitedifference time-domain (FDTD) method in spherical coordinates. A novel generalized perfectly matched layer (PML) has been developed for the truncation of the lossy soil. For having an accurate modeling with less memory requirements, an efficient "non-uniform" mesh generation scheme is used. Also in each time step...
متن کاملthe investigation of the relationship between type a and type b personalities and quality of translation
چکیده ندارد.
on the practicality and effectiveness of a personalized eclectic method incorporated into iranian high school efl syllabus
همگام با سرعت در حال رشد خلاقیت و نوآوری های آموزش زبان به ویژه ظهور روش ارتباطی آموزش زبان? بسیاری از مدارس زبان با بازاندیشی آموزش و پرورش خود? برای گنجاندن فعالیت های ارتباطی، وزمینه ی شخصی سازی شده به شیوه های سنتی خود به روز رسانی شده اند. با این حال، مدارس ایرانی در این زمینه آهسته پیش رفته اند. از این رو، هدف عمده ی پژوهش حاضر برداشتن یک گام در پر کردن شکاف بین نظریه های آموزشی نو ظهور و...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Korean Society of Mineral and Energy Resources Engineers
سال: 2022
ISSN: ['2288-0291', '2288-2790']
DOI: https://doi.org/10.32390/ksmer.2022.59.4.364