利用GRACE重力卫星反演2003～2013年新疆天山地区陆地水储量时空变化

发布时间：2018-03-23 08:06

本文选题：GRACE　切入点：天山　出处：《武汉大学学报(信息科学版)》2017年07期 　论文类型：期刊论文

【摘要】：利用2003-1~2013-12的GRACE月重力场数据来计算新疆天山地区陆地水储量的变化,采用去相关滤波和300km高斯滤波相结合的方法来滤除GRACE数据中的噪声,同时采用尺度因子的方法来减小GRACE后处理误差的影响,并利用Paulson模型结果来扣除由冰川均衡调整(GIA)对水储量反演结果的影响,把得到的最终结果与同期GLDAS、CPC水文模型进行了验证分析。结果表明,GRACE反演结果与两个水文模型的模拟结果变化趋势基本一致,在2003~2013年间,研究区域的水储量整体上呈现下降趋势,速率为-0.54±0.27mm/a左右,但期间水储量变化波动较大,在2008年10月份左右,该区域水储量较同期呈现明显减小,这与该时段的干旱事件相一致。
[Abstract]:The variation of land water reserves in Tianshan region of Xinjiang is calculated by using the monthly GRACE gravity field data from January 2003 to December 2013, and the noise from GRACE data is filtered by using the method of de-correlation filter and 300km Gao Si filter. At the same time, the method of scale factor is used to reduce the effect of GRACE post-processing error, and the effect of glacier equalization adjustment on water reserve inversion is deducted from the result of Paulson model. The final results are verified with the corresponding GLDASA CPC hydrological model. The results show that the GRACE inversion results are basically consistent with the simulation results of the two hydrological models, and the water reserves in the study area as a whole showed a downward trend during the period of 2003 / 2013. The rate is about -0.54 卤0.27mm/a, but the water reserves fluctuate greatly during the period. In October 2008, the water reserves in the region decreased obviously compared with the same period, which is consistent with the drought events in this period.
【作者单位】：山东科技大学测绘科学与工程学院;山东科技大学矿山灾害预防控制省部共建国家重点实验室;国家测绘地理信息局卫星测绘应用中心;
【基金】：国家重点基础研究发展计划(2013CB733302) 国家自然科学基金(41204007,41374009) 公益性行业科研专项(201412001,201512012) 山东省自然科学基金(ZR2013DM009) 山东科技大学科研创新团队支持计划(2014TDJH01)~~
【分类号】：P223;P332

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