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There are lots of random noises in seismic data. It is very important to remove random noises in seismic data processing. Fourier transform is the traditional method in signal analysis. In this paper, a novel method is put forward. Wiener filter method can effectively remove random noises. It gets over the limit of Fourier transform. By comparing the denoising results of Fourier transform method and...
Gels of composition xZrO 2 (1-x)SiO 2 , with x = 10, 20, 30 and 40 vol%, have been prepared by a wet chemical method using fumed silica and zirconyl chloride as precursors. Thermogravimetric analysis (TG) and differential thermal analysis (DTA) show that weight loss is caused by release of the absorbed water and decomposition of the Zr(OH) 4 gels. Gels were heat-treated for...
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