Open AccessHigh-resolution reflected P- and SH-wave imaging for the shallow subsurface in the thick Quaternary area
Author(s) -
Kai Wang,
Xiaoming Feng,
Xiaojiang Wang,
Hangyu Yue,
Baowei Zhang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/660/1/012010
Subject(s) - quaternary , geology , reflection (computer programming) , wavelength , resolution (logic) , seismology , section (typography) , stratum , surface wave , waves and shallow water , optics , geotechnical engineering , paleontology , physics , oceanography , artificial intelligence , computer science , advertising , business , programming language
For the construction of urban underground space, the shallow stratum structure from surface to 200 meters needs to be high-precision investigated. As limited in the theoretical level, the normal reflection P-wave can’t image in the very shallow subsurface especially in a thick Quaternary area. The SH-wave survey has a higher resolution in the theoretical level because the SH-wave has a lower velocity and shorter wavelength. The aim of this paper is to present a combined seismic reflection survey of P- and SH-wave in a thick Quaternary area where is close to Xiong’an New Area. By using the (λ/4) criterion, we obtain a resolution around 1.4m and 2.4 m for the SH-wave section in 9 m (v=169 m/s and f=30 Hz) and 50 m (v=209 m/s and f=22 Hz) depth separately and a resolution around 3.8m for the P-wave section in 200 meters depth (v=1878 m/s and f=125 Hz).