کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6434012 1636779 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of temporal variation of earthquake occurrences in Caucasus from 1960 to 2011
ترجمه فارسی عنوان
تحلیل تغییرات زمانی وقوع زلزله در قفقاز از سال 1960 تا 2011
کلمات کلیدی
لرزه خیزی، دینامیک، ویژگی های زمانی فرایند لرزه ای، اجزاء دوره ای در توزیع زلزله،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
چکیده انگلیسی


- Earthquakes occurrence in Caucasus is not characterized by dominant frequencies.
- Earthquakes time distribution consists of different low amplitude oscillations.
- Distribution of cyclic components power in earthquakes occurrence is not uniform.
- Power of cyclic components increases in periods of local seismic activity decrease.

Frequency of earthquake occurrences in Caucasus is investigated on hourly and daily time scales. The observation period is 51 years, which is sufficiently long to perform a reliable statistics. Several methods (power spectrum, wavelet and Hilbert-Huang transformation) are applied to earthquake time series. Our findings show that earthquakes hourly and daily occurrence is not characterized by the dominant frequencies. However, many different oscillations with periods from hours to years and longer contribute to the frequency content of the earthquake time distribution, although their amplitude is rather low. The variation of the power of cyclic components in the temporal features of earthquakes occurrence is not uniform, but their amplification corresponds to the decrease of released local seismic energy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tectonophysics - Volume 608, 26 November 2013, Pages 857-865
نویسندگان
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