检索结果-南通市图书馆

Effects of Rainfall and Underlying Surface on Flood Recession——The Upper Huaihe River Basin Case

International Journal of Disaster Risk Science 2021年第1期12卷 111-120页

作者： Yashan Cheng Yanfang Sang Zhonggen Wang Yuhan Guo Yin Tang Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

The effects of rainfall and underlying surface conditions on flood recession processes are a critical issue for flood risk reduction and water use in a region.In this article,we examined and clarified the issue in the upper Huaihe River Basin where flood disasters frequently occur.Data on 58 rainstorms and flooding events at eight watersheds during 2006–2015 were collected.An exponential equation(with a key flood recession coefficient)was used to fit the flood recession processes,and their correlations with six potential causal factors—decrease rate of rainfall intensity,distance from the storm center to the outlet of the basin,basin area,basin shape coefficient,basin average slope,and basin relief amplitude—were analyzed by the Spearman correlation test and the Kendall tau test.Our results show that 95%of the total flood recession events could be well fitted with the coefficient of determination(R2)values higher than 0.75.When the decrease rate of rainfall intensity(Vi)is smaller than 0.2 mm/h2,rainfall conditions more significantly control the flood recession process;when Vi is greater than 0.2 mm/h2,underlying surface conditions dominate.The result of backward elimination shows that when Vi takes the values of0.2–0.5 mm/h2 and is greater than 0.5 mm/h2,the flood recession process is primarily influenced by the basin’s average slope and basin area,respectively.The other three factors,however,indicate weak effects in the study area.

关键词： Backward elimination China correlation test Flood recession Huaihe River Basin Rainfall intensity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Empirical Analysis of the correlation between Chinese and American Stock Market

Empirical Analysis of the correlation between Chinese and Am...

引用

2011 2nd IEEE International Conference on Emergency Management and Management Sciences(ICEMMS 2011)

作者： Hongxia Wang School of Management and Economics Beijing Institute of Technology Beijing China

＜正＞With the process of the economic globalization,the correlation between China and America stock markets is becoming increasingly significant.In this paper,we take the Shanghai（securities） Composite Index and the Standard ＆ Poor’s 500 index as subjects.We study the original data of these two markets’ daily returns in a time period of 1994-2010. Using the analyzing software EVIEWS5.0,we firstly build the VAR model between the daily returns,moreover apply the Granger causality test to study their relationship,and then make a further study by using the Impulse test and the Variance Decomposition test to conclude the correlation pattern of China and U.S.stock markets.

关键词： Stock co-movement correlation test Return

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：