Poroelasticity and Fluid Flow Modeling for the 2012 Emilia-Romagna Earthquakes: Hints from GPS and InSAR Data
المؤلفون المشاركون
Nespoli, Massimo
Belardinelli, Maria Elina
Gualandi, Adriano
Serpelloni, Enrico
Bonafede, Maurizio
المصدر
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-15، 15ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-07-19
دولة النشر
مصر
عدد الصفحات
15
التخصصات الرئيسية
الملخص EN
The Emilia-Romagna seismic sequence in May 2012 was characterized by two mainshocks which were close in time and space.
Several authors already modeled the geodetic data in terms of the mechanical interaction of the events in the seismic sequence.
Liquefaction has been extensively observed, suggesting an important role of fluids in the sequence.
In this work, we focus on the poroelastic effects induced by the two mainshocks.
In particular, the target of this work is to model the influence of fluids and pore-pressure changes on surface displacements and on the Coulomb failure function (CFF).
The fluid flow and poroelastic modeling was performed in a 3D half-space whose elastic and hydraulic parameters are depth dependent, in accordance with the geology of the Emilia-Romagna subsoil.
The model provides both the poroelastic displacements and the pore-pressure changes induced coseismically by the two mainshocks at subsequent periods and their evolution over time.
Modeling results are then compared with postseismic InSAR and GPS displacement time series: the InSAR data consist of two SBAS series presented in previous works, while the GPS signal was detected adopting a variational Bayesian independent component analysis (vbICA) method.
Thanks to the vbICA, we are able to separate the contribution of afterslip and poroelasticity on the horizontal surface displacements recorded by the GPS stations.
The poroelastic GPS component is then compared to the modeled displacements and shown to be mainly due to drainage of the shallowest layers.
Our results offer an estimation of the poroelastic effect magnitude that is small but not negligible and mostly confined in the near field of the two mainshocks.
We also show that accounting for a 3D fault representation with a nonuniform slip distribution and the elastic-hydraulic layering of the half-space has an important role in the simulation results.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Nespoli, Massimo& Belardinelli, Maria Elina& Gualandi, Adriano& Serpelloni, Enrico& Bonafede, Maurizio. 2018. Poroelasticity and Fluid Flow Modeling for the 2012 Emilia-Romagna Earthquakes: Hints from GPS and InSAR Data. Geofluids،Vol. 2018, no. 2018, pp.1-15.
https://search.emarefa.net/detail/BIM-1157694
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Nespoli, Massimo…[et al.]. Poroelasticity and Fluid Flow Modeling for the 2012 Emilia-Romagna Earthquakes: Hints from GPS and InSAR Data. Geofluids No. 2018 (2018), pp.1-15.
https://search.emarefa.net/detail/BIM-1157694
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Nespoli, Massimo& Belardinelli, Maria Elina& Gualandi, Adriano& Serpelloni, Enrico& Bonafede, Maurizio. Poroelasticity and Fluid Flow Modeling for the 2012 Emilia-Romagna Earthquakes: Hints from GPS and InSAR Data. Geofluids. 2018. Vol. 2018, no. 2018, pp.1-15.
https://search.emarefa.net/detail/BIM-1157694
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1157694
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر