Abstract：It is generally believed that seismic wave absorption caused by loose near-surface such as sand dunes is the main factor which damages both data S/N ratio and resolution in Taklimakan Desert. Therefore, clearly understanding seismic wave attenuation in the desert is significant for taking appropriate measures in seismic acquisition and data processing. For this purpose, we have conducted field tests in Gucheng, Taklimakan Desert with "honey comb" geophone arrays and analyzed wave absorption caused by loose near-surface with spectral ratio method. It is concluded that loose near-surface in the desert would not very severely damage seismic energy and frequency when the dominant frequency is below 40Hz. Our experiment shows that high quality seismic data cannot be acquired without geophone arrays, even though geophones are buried in high velocity layer(HVL) under loose sand dunes.
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