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对夏威夷檀香山岛的两个站(H3和H4)钙质沉积物进行了20～100kHz的原位纵波声速和声衰减测量.它们均有轻微的频散.随频率的增加H3站位声速从1691m/s增加到1708m/s,H4站位的声速从1579m/s增加到1585m/s.随频率的增加H3站位的有效衰减从15dB/m增加到75dB/m,H4站位的有效衰减从22dB/m增加到62dB/m.运用Biot Stoll模型对所测得的纵波速度和声衰减数据进行了Biot模型未知参数反演,发现粒径较大的H3站的沉积物(孔隙率为45%)比粒径较小的H4站的沉积物(孔隙率为56%)具有曲率小和渗透率及孔隙半径都大的性质.
Calculations of calcareous sediments at both stations (H3 and H4) at Honolulu, Hawaii were performed for in-situ measurements of longitudinal and acoustic attenuation at 20-100 kHz with slight dispersion, with increasing frequency of H3 station sound velocity from 1691 m / s increased to 1708m / s, the sound velocity of H4 station increased from 1579m / s to 1585m / s. The effective attenuation of H3 station increased from 15dB / m to 75dB / m with the increase of frequency. 22dB / m to 62dB / m. The Biot Stoll model was used to inverse the unknown parameters of the Biot model to the measured P-wave velocity and acoustic attenuation data. It was found that sediments (porosity 45% ) Sediments (porosity of 56%) of H4 stations with smaller particle size have the characteristics of small curvature and large permeability and pore radius.