ESTIMATION OF WATER TABLE ELEVATION BY UNIVERSAL COKRIGING

来源 :Journal of Hydrodynamics(Ser.B) | 被引量 : 0次 | 上传用户:saddd11
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
When water resource or quality problems associated with phreatic water in geological settings are studied, information about water table elevations is often crucial. In those cases where the water table is a subdued replica of the ground surface, universal cokriging can be used to estimate water table elevations at un-sampled locations on the basis of water table and ground surface elevation measurements obtained at well locations. In this paper, universal cokriging, with ground surface elevation considered as a co-variate, was used to estimate water table elevations. Universal cokriging equations were derived, an iterative method for obtaining experimental variograms was established, and a case study of an initial groundwater flow simulation in the Xiuwu County, Henan Province, China, was presented. In the case study, the initial groundwater flow regime was represented both by universal cokriging with the ground surface elevation serving as a covariate and by universal kriging without the inclusion of ground surface elevation as a covariate. A comparison of the results from these two approaches shows that groundwater levels of phreatic water at locations without measurements in regions with unconsolidated porous media can be estimated more accurately by universal cokriging. When water resource or quality problems associated with phreatic water in geological settings are studied, information about water table elevations is often crucial. In those cases where the water table is a subdued replica of the ground surface, universal cokriging can be used to estimate water table elevations at un-sampled locations on the basis of water table and ground surface elevation measurements obtained at well locations. In this paper, universal cokriging, with ground surface elevation considered as a co-variate, was used to estimate water table elevations. Universal cokriging equations were derived, an iterative method for obtaining experimental variograms was established, and a case study of an initial groundwater flow simulation in the Xiuwu County, Henan Province, China, was presented. In the case study, the initial groundwater flow regime was exhibited both by universal cokriging with the ground surface elevation serving as a covariate and by universal kriging without the inclusion of ground surface elevation as a covariate. A comparison of the results from these two approaches shows that groundwater levels of phreatic water at locations without measurements in regions with unconsolidated porous media can be estimated more accurately by universal cokriging.
其他文献
一、温家宝总理12月8日主持召开国务院常务会议,审议并原则通过《西部大开发“十一五”规划》等。二、新华社12月3日电,国务院办公厅近日发出通知,要求做好粮油供应工作,稳定粮食
为了进一步推进我国电子商务的发展,促进国际间电子商务的交流与合作,展示当今世界电子商务最新发展及应用成果,第四届中国国际电子商务大会将于2000年4月6-8日在北京国际会
亚洲开发银行12月11日公布报告说,由于外部经济环境改善、内部消费需求强劲,今年东亚国家和地区的平均经济增长率将达到6.1%.明年的经济增长率预计为6.6%。 报告指出,今年第三
埃德温·科克斯曾挨家挨户地试着推销铝制厨具,但是销售情况却不佳。他很快意识到由于清洗不便人们不愿意购买铝制厨具。科克斯把这个挫折当成反馈而不是失败,并且想出了一
“发展”,是哲学名词,指事物由小到大、由简到繁、由低级到高级、由旧质到新质的运动变化过程,也就是事物内部矛盾不断发生、变化和解决的过程。邓小平同志讲:“发展是硬道理。”
虽说目前尚不能准确地预测非典何时结束,但是非典的可防、可控、可治的成功实践及疫情日趋减缓的实际表明,非典终将过去。在疫情得到有效控制后,各行各业势必迎来一个新的发
记者:张市长您好。党的十六大确立了全面建设小康社会的目标,绘制了21世纪头20年我国现代化建设的宏伟蓝图。鞍山是我国重要的钢铁城市,也是辽宁省的第三大城市,鞍山如何确立
为了总结交流我国近年来在沉积学理论、沉积与能源、沉积与环境、沉积与大地构造等研究领域的最新研究成果,突显沉积学在促进社会经济可持续发展中的地位与作用,讨论沉积学的
知名人士李嘉诚,无论在什么地方、何种场合,无需以名片表白身份。可在中国大西北,他却给几个残疾人各留下了——一张名片香港长江实业(集团)董事局主席李嘉诚,从未去过祖国
科研管理是指将基础研究与应用研究的结果与国家和社会的需求相结合,并对其引导、控制的综合性工作。因而科研项目管理不是单纯的传承技能、创造知识,而且还涵盖了科教资源整