TY - JOUR
T1 - Energy partitions in 2D and 3D curved boundaries during the seismic wave propagation
T2 - Numerical results
AU - Rodríguez-Castellanos, Alejandro
AU - Trujillo-Alcántara, Alfredo
AU - Carbajal-Romero, Manuel
AU - Flores-Mendez, Esteban
AU - Rodríguez-Sánchez, José Efraín
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/1
Y1 - 2021/1
N2 - Energy partitions during the propagation of seismic waves is a topic of current interest in the field of Seismology and Geophysics. Energy partitions have recently been derived through concepts of diffuse fields, correlations of seismic noise and Green's functions. In this work, the use of Boundary Element Method is introduced to calculate energy partitions for various numerical models that allow to identify the behavior of seismic waves and their associated energy partitions in 2D and 3D curved boundaries. The results are consistent with previously published results and show that most of the energy, regardless of the material, is propagated by Shear waves, reaching in some cases up to 100% of the propagated energy. For an infinity 2D Poisson solid (ν = 0.25), the energy partitions have a distribution of 25% for P-waves and 75% for SV-waves, while for a solid with a ratio of ν = 0.5 the energy is totally propagated by SV-waves thus, P-waves are none existent. Additionally for a halfspace with ν = 0.25, the energy ratio, defined as the quotient of the energy calculated on the surface with respect to that corresponding to an infinite space, has a value of 2.0 for a horizontal free surface while for a curved one such ratio is 1.79. For an infinity 3D Poisson solid, P-, SV- and SH-waves have a distribution of energy partitions of 8.78%, 45.61%, and 45.61%, respectively. Moreover, the energy ratio for a horizontal 3D free surface is 2.39 while for a 3D curved free surface the ratio is 2.68.
AB - Energy partitions during the propagation of seismic waves is a topic of current interest in the field of Seismology and Geophysics. Energy partitions have recently been derived through concepts of diffuse fields, correlations of seismic noise and Green's functions. In this work, the use of Boundary Element Method is introduced to calculate energy partitions for various numerical models that allow to identify the behavior of seismic waves and their associated energy partitions in 2D and 3D curved boundaries. The results are consistent with previously published results and show that most of the energy, regardless of the material, is propagated by Shear waves, reaching in some cases up to 100% of the propagated energy. For an infinity 2D Poisson solid (ν = 0.25), the energy partitions have a distribution of 25% for P-waves and 75% for SV-waves, while for a solid with a ratio of ν = 0.5 the energy is totally propagated by SV-waves thus, P-waves are none existent. Additionally for a halfspace with ν = 0.25, the energy ratio, defined as the quotient of the energy calculated on the surface with respect to that corresponding to an infinite space, has a value of 2.0 for a horizontal free surface while for a curved one such ratio is 1.79. For an infinity 3D Poisson solid, P-, SV- and SH-waves have a distribution of energy partitions of 8.78%, 45.61%, and 45.61%, respectively. Moreover, the energy ratio for a horizontal 3D free surface is 2.39 while for a 3D curved free surface the ratio is 2.68.
KW - Boundary Element Method
KW - Curved Boundaries
KW - Elastic Waves
KW - Energy Partition
UR - http://www.scopus.com/inward/record.url?scp=85099218993&partnerID=8YFLogxK
U2 - 10.1016/j.jappgeo.2020.104247
DO - 10.1016/j.jappgeo.2020.104247
M3 - Artículo
AN - SCOPUS:85099218993
SN - 0926-9851
VL - 184
JO - Journal of Applied Geophysics
JF - Journal of Applied Geophysics
M1 - 104247
ER -