基于GRACE数据反演关中平原水储量  

Inversion of water reserves in Central Shaanxi Plain based on GRACE data

作　　者：康明哲 雷小鹏 付兆祥 周环 朱恩 KANG Mingzhe;LEI Xiaopeng;FU Zhaoxiang;ZHOU Huan;ZHU En(Northwest Nonferrous Metals Party of Geophysical and Geochemical Exploration,Xi’an,Shaanxi 710068,China;Sino Shaanxi Nuclear Industry Group Geological Survey Corporation Limited,Xi’an,Shaanxi 710100,China)

机构地区：[1]西安西北有色物化探总队有限公司,陕西西安710068 [2]中陕核工业集团地质调查院有限公司,陕西西安710100

出　　处：《北京测绘》2024年第9期1330-1334,共5页Beijing Surveying and Mapping

基　　金：国家自然科学基金(41304013)。

摘　　要：本文利用卫星重力数据研究2003—2022年关中平原水储量的变化,基于尺度因子恢复因截断和滤波引起的误差,并与水文模型和降雨数据进行综合对比分析。结果表明:关中平原水储量整体呈递增趋势,约为0.96 cm/a。东北部递增速率最小约为0.46 cm/a,中部次之约为0.65 cm/a,西南部区域达到最大约为0.75 cm/a。关中平原水储量在一年中呈现“减—增—减”的趋势,即秋冬两季水储量明显高于春夏两季水储量。通过卫星重力与水文和降雨的对比分析,可以看出水文数据和卫星重力计算的水储量时间变化序列基本一致。降雨是水储量变化的重要因素,月平均降雨量与卫星重力反演的结果变化趋势一致,并且水储量都是在夏秋出现峰值,冬春出现谷值。分析研究区域水储量的时间、空间分布特征规律,为实现关中平原水资源的可持续利用提供了合理的依据。This paper used satellite gravity data to study the changes in water reserves in the Central Shaanxi Plain from 2003 to 2022,recovered errors caused by truncation and filtering based on the scale factor,and made a comprehensive comparative analysis with hydrological model and rainfall data.The results show that the water reserves in the Central Shaanxi Plain show an overall increasing trend,about 0.96 cm/a.The minimum increasing rate is about 0.46 cm/a in the northeast,0.65 cm/a in the central areas,and 0.75 cm/a in the southwest.The water reserves in the Central Shaanxi Plain show a trend of“decreasing,increasing,and decreasing”in a year.In other words,the water reserves in autumn and winter are significantly higher than those in spring and summer.Through the comparative analysis of satellite gravity,hydrology,and rainfall,it can be seen that the time variation sequence of water reserves calculated by hydrological data and satellite gravity is basically consistent,and rainfall is an important factor for change in water reserves.The changing trend of monthly average rainfall is consistent with the results of satellite gravity inversion,and the peak of water reserves appears in summer and autumn,and the valley of water reserves appears in winter and spring.The analysis of the temporal and spatial distribution characteristics of water reserves in the study area provides a reasonable basis for the sustainable utilization of water resources in the Central Shaanxi Plain.

关 键 词：卫星重力 水文模型 水储量 降雨 关中平原 

分 类 号：P228.4[天文地球—大地测量学与测量工程]