| 논문명 |
P파 도달시간을 이용한 도식적 진앙 추정 / Epicenter estimation by graphical method based on P arrivals / 제 Ⅰ-1 분과 : 지진연구 |
| 수록사항 |
한국지진공학회 춘계학술발표회 논문집 (2007-03) |
| 요약2 |
A robust approach is proposed, which provides a fast and intuitive estimation of earthquake epicenters. This method uses an empirical relationship between P arrivals of local to regional earthquakes and epicentral distances. The relationship enables us to draw epicentral circles with information of P arrivals of earthquakes at a given time, whose radiuses are empirical epicentral distances. As time goes back to an origin time of the earthquake, epicentral circles begin to intersect each other at a possible location of an epicenter. In this research, 150 P arrivals from 15 events of 2005 KMA earthquake catalog, whose magnitudes are greater than 3.0, are used for determining the empirical relationship between P arrivals and epicentral distances. Several experiments show that this approach will be helpful for a rapid determination of the epicenter. |
