کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4731838 1640422 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Abnormal infrasound signals before 92 M ≧ 7.0 worldwide earthquakes during 2002-2008
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
پیش نمایش صفحه اول مقاله
Abnormal infrasound signals before 92 M ≧ 7.0 worldwide earthquakes during 2002-2008
چکیده انگلیسی
In this paper, 240 abnormal infrasound signals observed at Beijing (39.87°N, 116.48°E) and 92 M ≧ 7.0 worldwide earthquakes during 2002-2008 are investigated. It is found that about 85% the earthquakes are preceded the signals by 1-30 days and the greater M ≧ 7.6 earthquakes are most likely leaded by 1-10 days. The maximum amplitude of the abnormal infrasound signal generally exceeds 8 Pa in sound pressure. The statistical analyses further indicate that the amplitude of the abnormal signals is proportional to the magnitude the associated forthcoming earthquake but inversely to the distance from that earthquake to the observation station.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Asian Earth Sciences - Volume 41, Issues 4–5, 5 June 2011, Pages 434-441
نویسندگان
, , , , , ,