Empirical attenuation relationship of peak ground acceleration for Eastern marmara region in Turkey
Joint Authors
Ulutas, Ergin
Ozer, Mithat Fırat
Source
The Arabian Journal for Science and Engineering. Section A, Science
Issue
Vol. 35, Issue 1A (31 Jan. 2010), pp.188-203, 16 p.
Publisher
King Fahd University of Petroleum and Minerals
Publication Date
2010-01-31
Country of Publication
Saudi Arabia
No. of Pages
16
Main Subjects
Topics
Abstract AR
تم – في هذا البحث – تطوير علاقة اضمحلال جديدة لتوصيف ذروة تسارع الأرض في أثناء الهزة الأرضية في منطقة مرمرة التي تقع شمال غرب تركيا.
و تتألف قاعدة البيانات من 751 مكونا أفقيا لذروة التسارع الأرضي حصلنا عليها من 78 زلازلا بما فيها زلزال إزميت 1999 (7.4 = ميغاواط) و زلزال دوزجي 1999 (7.2 = ميغاواك).
و تعتبر البيانات كافة غير المعالجة من أهم توابع هذه الزلازل.
و قد طبقنا نمط خط الأساس و تصحيحات الأجهزة المستخدمة، و تم تطبيقها على هذه البيانات، حيث قمنا بحساب تحويلات فورييه السريعة (FFT) لكافة البيانات لتحديد نقاط العبور العالية و المنخفضة للمرشحات بعد هذه التصحيحات.
و قد استخدمنا تحليلات الانحدار متعددة لحساب العلاقة LogA = 2.7809 + 0.5344MW – 1og(rnp + 0.0183 × 100.4537MW) – 0.0015rnp و وجدنا أن علاقة اضمحلال ذروة تسارع الأرض يبتع توزيعا لوغارثمي – طبيعي مع معيار الخطأ يمثل 0.392 % من الزيادة.
Abstract EN
A new attenuation relation for peak ground acceleration (PGA) in the Marmara region of northwestern Turkey has been developed.
The data base consists of 751 horizontal components of peak ground acceleration recorded from 78 earthquakes, including the 1999 Izmit (Mw = 7.4) and the 1999 Duzce (Mw = 7.2) earthquakes.
All the raw records are of the main earthquakes and their aftershocks.
Baseline and instrument corrections have been applied to these raw records.
Fast Fourier Transforms (FFT) has been calculated for all the records to select the high-pass and low-pass filters after these corrections.
Multiple regression analyses have been used to calculate the relationship.
The proposed attenuation relationship is log 2.7809 0.5344 log (0.0183 100.4537Mw) 0.0015 wrap-up A = − + M − r + × − r where A is the peak ground horizontal acceleration in g, Mw is the moment magnitude and rap is the closest distance from the surface projection of the rupture area.
If the Mw magnitude and the fault plane solution are not defined for an event, then other magnitudes are converted to Mw magnitude using a correlation formula.
The peak ground horizontal acceleration attenuation relationship has been found to be log-normally distributed with a standard error representing a 0.392 percent increase in terms of natural logarithm.
American Psychological Association (APA)
Ulutas, Ergin& Ozer, Mithat Fırat. 2010. Empirical attenuation relationship of peak ground acceleration for Eastern marmara region in Turkey. The Arabian Journal for Science and Engineering. Section A, Science،Vol. 35, no. 1A, pp.188-203.
https://search.emarefa.net/detail/BIM-308437
Modern Language Association (MLA)
Ulutas, Ergin& Ozer, Mithat Fırat. Empirical attenuation relationship of peak ground acceleration for Eastern marmara region in Turkey. The Arabian Journal for Science and Engineering. Section A, Science Vol. 35, no. 1A (Jan. 2010), pp.188-203.
https://search.emarefa.net/detail/BIM-308437
American Medical Association (AMA)
Ulutas, Ergin& Ozer, Mithat Fırat. Empirical attenuation relationship of peak ground acceleration for Eastern marmara region in Turkey. The Arabian Journal for Science and Engineering. Section A, Science. 2010. Vol. 35, no. 1A, pp.188-203.
https://search.emarefa.net/detail/BIM-308437
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 202-203
Record ID
BIM-308437