کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
304193 512788 2014 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ground motion modeling for site effects at L’Aquila and middle Aterno river valley (central Italy) for the MW 6.3, 2009 earthquake
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
پیش نمایش صفحه اول مقاله
Ground motion modeling for site effects at L’Aquila and middle Aterno river valley (central Italy) for the MW 6.3, 2009 earthquake
چکیده انگلیسی


• 2-D ground motion modeling of the MW 6.3, 2009 L’Aquila earthquake at L’Aquila and middle Aterno river valley.
• Parametric studies of the variation of response spectra with shear wave velocity of the lithotypes.
• Validation of synthetic response spectra with the observed ones.

Ground motion for the 6 April 2009 (Mw 6.3) earthquake is computed along 2-D cross-sections at L’Aquila by a hybrid method (modal summation plus finite differences) and validated with recordings at AQU, AQK, AQG, AQA and AQV stations. Parametric studies of S-wave velocities of the shallowest lithotypes allow to get a general agreement between synthetic and observed response spectra, despite the scaled point-source approach and the lack of detailed geological and seismic studies. It results that the megabreccia covering on lacustrine soils, characterizing the historical center of L’Aquila, is responsible of spectral amplifications along the vertical (2–7) and horizontal components (2–3) at a wide frequency range (0.6–7 Hz). The covering of alluvial soils in the middle Aterno river valley is responsible of amplifications at 2–7 Hz both in the horizontal and vertical planes of the motion. Such amplifications evidence that site effects might have been responsible of structural damages.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Dynamics and Earthquake Engineering - Volumes 61–62, June–July 2014, Pages 107–123
نویسندگان
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