Topographic effects on the seismic response of steep slopesBulletin of the Seismological Society of America - Tập 87 Số 3 - Trang 701-709 - 1997
Scott A. Ashford, Nicholas Sitar, John Leth, Nan Deng
AbstractA frequency-domain parametric study using generalized consistent
transmitting boundaries has been performed to evaluate the significance of
topographic effects on the seismic response of steep slopes. The results show
that the peak amplification of motion at the crest of a slope occurs at a
normalized frequency H/λ = 0.2, where H is the slope height and λ is the
wavelength of the motion. T... hiện toàn bộ
The mechanism of sandblowsBulletin of the Seismological Society of America - Tập 48 Số 2 - Trang 155-161 - 1958
George W. Housner
abstract The formation of sandblows by earthquakes is explained in terms of
well-known properties of water-bearing soils. The important parameters of the
problem are the porosity, the permeability, the elasticity, and the degree of
consolidation of the soil. The important conditions are that the water table be
sufficiently near the ground surface and that the readjustment of soil particles
by the ... hiện toàn bộ