A statistical damage model with implications for precursory seismicity

Czasopismo : Acta Geophysica
Tytuł artykułu : A statistical damage model with implications for precursory seismicity

Autorzy :
Vallianatos, F.
Technological Educational Institute of Crete, Laboratory of Geophysics and Seismology, Crete, Greece, fvallian@chania.teicrete.gr,
Tsallis, C.
Centro Brasileiro de Pesquisas Fisicas and National Institute of Science and Technology for Complex Systems, Rio de Janeiro, Brazil, tsallis@cbpf.br,
Sotolongo-Costa, O.
Catedra de Sistemas Complejos “Henri Poincare”, Universidad de La Habana, osotolongo@fisica.uh.cu,
Celikoglu, A.
Department of Physics, Faculty of Science, Ege University, Izmir, Turkey, ahmet.celikoglu@ege.edu.tr,
Abe, S.
Department of Physical Engineering, Mie University, Mie, Japan, suabe@sf6.so-net.ne.jp,
Bunde, A.
Institut fur Theoretische Physik, Giessen, Germany, Armin.Bunde@uni-giessen.de,
Donner, R.
Research Domain IV – Transdisciplinary Concepts & Methods, Potsdam Institute for Climate Impact Research, Potsdam, Germany, reik.donner@pik-potsdam.de,
Molchan, G.
International Institute of Earthquake Prediction Theory and Mathematical Geophysics, Russian Academy of Sciences, Moscow, Russia, molchan@mitp.ru,
Lee, Y.-T.
Graduate Institute of Geophysics, National Central University, Jhongli, Taiwan, shine2530@gmail.com,
Abstrakty : Acoustic emissions prior to rupture indicate precursory damage. Laboratory studies of frictional sliding on model faults feature accelerating rates of acoustic emissions prior to rupture. Precursory seismic emissions are not generally observed prior to earthquakes. To address the problem of precursory damage, we consider failure in a fiber-bundle model. We observe a clearly defined nucleation phase followed by a catastrophic rupture. The fibers are hypothesized to represent asperities on a fault. Two limiting behaviors are the equal load sharing p = 0 (stress from a failed fiber is transferred equally to all surviving fibers) and the local load sharing p = 1 (stress from a failed fiber is transferred to adjacent fibers). We show that precursory damage in the nucleation phase is greatly reduced in the local-load sharing limit. The local transfer of stress from an asperity concentrates nucleation, restricting precursory acoustic emissions (seismic activity).

Słowa kluczowe : earthquake precursors, acoustic emission, fiber-bundle model, rupture, nucleation,
Wydawnictwo : Instytut Geofizyki PAN
Rocznik : 2012
Numer : Vol. 60, no. 3
Strony : 638 – 663
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Cytuj : Vallianatos, F. ,Tsallis, C. ,Sotolongo-Costa, O. ,Celikoglu, A. ,Abe, S. ,Bunde, A. ,Donner, R. ,Molchan, G. ,Lee, Y.-T. , A statistical damage model with implications for precursory seismicity. Acta Geophysica Vol. 60, no. 3/2012