@article{fdi:010073660,
  title = {{Q}uantification of the amplitude variability of the ground motion in {A}rgostoli, {G}reece. {V}ariability of linear and non-linear structural response of a single degree of freedom system},
  author = {{K}oufoudi, {E}. and {C}ornou, {C}{\'e}cile and {G}range, {S}. and {D}ufour, {F}. and {I}mtiaz, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he term "spatial variability of seismic ground motions" denotes the differences in the amplitude and phase content of seismic motions. {T}he effect of such spatial variability on the structural response is still an open issue. {I}n-situ experiments may be helpful in order to answer the questions regarding both the quantification of the spatial variability of the ground motion within the dimensions of a structure as well as the effect on its dynamic response. {T}he goal of the present study is to quantify the variability of the seismic ground motion accelerations in the shallow sedimentary basin of {A}rgostoli, {G}reece, and thereafter to identify its effect on the linear and non-linear elasto-plastic response of a single degree of freedom system in terms of spectral displacements. {A}round 400 earthquakes are used, recorded by the 21-element very dense seismological array deployed in {A}rgostoli with inter-station spacing ranging from 5 to 160 meters. {T}he seismic motion variability, evaluated in terms of spectral accelerations, is found to be significant and to increase with inter-station distance and frequency. {T}hereafter, the amplitude variability in terms of spectral displacements, which is indeed the linear response of a single degree of freedom ({SDOF}) system with various fundamental periods, is compared with the amplitude variability of a {SDOF} with non-linear elasto-plastic response. {T}he variability of the maximum top displacement of the linear single degree of freedom system is estimated to be on average 12% with larger variabilities to be observed within two narrow frequency ranges (between 1.5 and 1.7 {H}z and between 3 and 4 {H}z). {S}uch high variabilities are caused by locally edge-generated diffracted surface waves. {T}he non-linear perfectly elasto-platic structural response of the {SDOF} system shows that although the variability has the same trends as in the case of linear response, it is almost constantly increased by 5%.},
  keywords = {{S}patial variability of ground motions ; {D}ense array ; {A}rgostoli ; {SDOF} ; {L}inear response ; {N}on-linear response ; {GRECE} ; {CEPHALONIE} ; {ARGOSTOLI}},
  booktitle = {},
  journal = {{B}ulletin of {E}arthquake {E}ngineering},
  volume = {16},
  numero = {9},
  pages = {3675--3685},
  ISSN = {1570-761{X}},
  year = {2018},
  DOI = {10.1007/s10518-018-0313-0},
  URL = {https://www.documentation.ird.fr/hor/fdi:010073660},
}