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世界地质 2021, 40(2) 453-458 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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| 基础地质 |
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基于GRACE 卫星的辽宁省2002—2017 年地下水储量监测 |
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刘斌,吴琼 |
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吉林大学地球探测科学与技术学院， 长春１３００２６ |
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摘要：
为监测和分析辽宁省地下水储量时空变化, 笔者利用2002 年4 月至2017 年6 月GRACE 时变重力场模型数据, 采用去相关滤波?高斯滤波及尺度因子法反演辽宁省陆地水储量变化, 再依据GL?DAS 水文模型模拟的土壤水与冰雪等效水之和, 获得辽宁省地下水储量变化?研究结果表明: 辽宁省地下水储量在降雨和农业活动的综合影响下表现出持续减少的现象, 2002—2017 年的地下水储量长期变化率为( - 0?? 42 ± 0?? 07) cm/ a, 2014 年后, 地下水储量表现出加速下降的趋势, 速率为( -2?? 65 ±0?? 51) cm/ a, 下降最严重区域在辽宁省北部的沈阳市与铁岭市? |
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关键词：
GRACE 卫星
尺度因子法
地下水储量
辽宁省
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Groundwater reserves monitoring in Liaoning Province based on GRACE satellites during 2002—2017
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LIU Bin, WU Qiong |
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College of Geo?exploration Science and Technology, Jilin University, Changchun 130026, China |
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Abstract:
In order to monitor and analyze the temporal and spatial variation of groundwater reserves in Liaoning Province, the authors use the de?correlation filtering, Gaussian filtering and scale factor method to invert the change of terrestrial water reserves in Liaoning Province based on the GRACE variable gravity field model data from April 2002 to June 2017, and subsequently obtain the change of groundwater reserves in Liaoning Province based on the sum of soil water and equivalent water of snow and ice simulated by the GLDAS hydrological model. The results show that under the comprehensive influence of rainfall and agricultural activities, the groundwater reserves in Liaoning Province show a continuous decrease. From 2002 to 2017, the long?term change rate of groundwater reserves is ( -0?? 42 ±0?? 07) cm/ a. After 2014, the groundwater reserves show an accelerated decline trend with a rate of ( -2?? 65 ±0?? 51) cm/ a, and the most severe decline occurs in Shenyang and Tieling in northern Liaoning Province. |
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Keywords:
GRACE satellites
scale factor method
groundwater reserves
Liaoning Province
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