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中国第32次南极考察内陆队首次使用雪地车载浅层探冰雷达取得了中山站至昆仑站全程1 300 km的浅层冰盖数据,通过MATLAB对数据进行FFT转换、背景滤波、改变叠加次数去噪和基于曲波变换的图像处理,使用Reflexw对MATLAB处理后数据进行地形校正、二次背景滤波和平滑滤波等处理,成功提取了冰盖浅层等时层并得出了等时层的平均深度、最大深度和波动情况。最后进行了数据的连接,展示了LGB69冰芯处等时层的分布并与冰芯数据结合大体对应了相应等时层的年代和事件。给出了Dome A附近的等时层分布情况。为东南极中山站至昆仑站沿途的物质积累率计算提供重要的数据支撑。
For the first time, China’s 32nd Antarctic expedition inland team made shallow ice sheet data of 1 300 km from Zhongshan Station to Kunlun Station using ice-capped shallow sounding radar for snowboarding. The data were converted to FFT by FFT, background filtering and change overlay The number of denoising and the image processing based on the curvelet transform, using Reflexw to the MATLAB processed data terrain correction, the second background filtering and smoothing filtering and other processing, successfully extracted the ice sheet isochronous layer and obtained the isochronous layer The average depth, maximum depth and fluctuations. Finally, the data connection is shown, showing the distribution of isochrones at the ice core of LGB69 and corresponding to the age and events of the corresponding isochrones, in combination with ice core data. The isochronal distribution near Dome A is given. It provides important data support for the calculation of material accumulation rate along the East Antarctic Zhongshan Station to Kunlun Station.