Seismic Moment Tensor and Its Inversion : An Overview

지진모멘트 Tensor와 전환 : 개요

The key concepts of seismic moment tensor are introduced in a 'physicist - oriented' style. The theory and application of seismic moment tensor which have been developed since the 1970s have become one of the most important branches in modern seismology. The description of earthquake sources in the modern seismology have led to much deeper understanding of the physics of indigenous earthquakes as well as various kinds of artificial seismic events, such as underground explosions, mining rockbursts, and reservoir induced tremors. Furthermore, with the development of digital seismological observation, some concepts, which were not included in 'classical' seismology, or not so important in 'classical' seismology, has become more and more important. It seems that it has been the time to have a new look at the fundamentals of seismology as a branch of applied physics, especially the part dealing with the physics of earthquake sources. Also in this field it may be important to clarify some fundamental concepts which, unexpectedly, have caused confusions even among professionals.

지진 모멘트 tensor와 진원함수가 물리학자 방식으로 소개된다. 1970년도 이후에 개발된 지진모멘트 텐사와 진원 함수는 현대지진학에서의 매우 중요한 역할을 하여 왔다. 현대 지진학 언어로 지진 진원 기술은 지하인공폭발, 광산 암석 붕괴, 저수지 유도지진과 같은 인공지진은 물론 공유 지진의 물리현상을 연구하게 하여 왔다. 더우기 고전 지진학에서 중요하지 않았고 고전 지진학에 포함되어 있지 않았던 새로운 개념, 디지털 지진학 관측은 더욱 중요성을 띄게 되었다. 지진학의 기초, 특히 지진진원의 물리학을 응용물리학의 일부분으로 다룰 때가 왔다고 본다.