River confluences represent an integral component of the fluvial system,with the potential to disrupt downstream longitudinal trends in the main river through inputs of water,sediments,and other materials,such as wood...River confluences represent an integral component of the fluvial system,with the potential to disrupt downstream longitudinal trends in the main river through inputs of water,sediments,and other materials,such as woody debris.These various inputs at confluence zones result in a high degree of morphological and,consequently,ecological diversity.This study examines the potential relationship between the spatial characteristics of the catchment and the parameters of the confluence hydrodynamic zones(CHZs).A total of 15 tributaries and their adjacent CHZs were selected for analysis along a 50 km reach of the VsetínskáBečva River in the Javorníky and Hostýn-Vsetín Mountains in the Czech part of the Outer Western Carpathians.The VsetínskáBečva River is highly channelized,with the majority of channelization efforts involving riverbank stabilization,weirs,or grade control structures.The study hypothesized a correlation between the spatial arrangement of the channel,as indicated by the channel width symmetry ratio,and the angle between the tributary and main-stem river,and the increased morphological activity,evidenced by changes in average bed depth at the CHZs.The correlation coefficient(r)and p significance were employed to describe the relationships among the parameters.The results indicated a significant correlation between channel width and the catchment area symmetry ratio(r=0.747,p=0.001),likely influenced by channel regulation works(e.g.,channel shape or size),which are often artificially adjusted to accommodate local hydrological conditions and flood discharges for flood protection.A significant inverse correlation between channel width symmetry ratio and average main-stem channel depth was also found(r=-0.584,p=0.022).展开更多
在CIMT2021中国国际机床展览会上,恩斯克投资有限公司(日本精工株式会社中国总部,以下简称NSK)作为全球知名的机床关键零部件制造企业,展示了当今数控机床的精密部件解决方案。本次CIMT展会,NSK的参展主题为"More Than Precision&q...在CIMT2021中国国际机床展览会上,恩斯克投资有限公司(日本精工株式会社中国总部,以下简称NSK)作为全球知名的机床关键零部件制造企业,展示了当今数控机床的精密部件解决方案。本次CIMT展会,NSK的参展主题为"More Than Precision",展示的产品为NSK最近1-2年开发的新技术与解决方案,部分产品首次在日本以外的展会中展出,NSK中国产业机械事业本部总经理方达针对明星产品做了详细介绍。展开更多
基金supported by an internal grant of the University of Ostrava[SGS03/PŘF/2024-The influence of man on the landscape and the landscape on a man III].
文摘River confluences represent an integral component of the fluvial system,with the potential to disrupt downstream longitudinal trends in the main river through inputs of water,sediments,and other materials,such as woody debris.These various inputs at confluence zones result in a high degree of morphological and,consequently,ecological diversity.This study examines the potential relationship between the spatial characteristics of the catchment and the parameters of the confluence hydrodynamic zones(CHZs).A total of 15 tributaries and their adjacent CHZs were selected for analysis along a 50 km reach of the VsetínskáBečva River in the Javorníky and Hostýn-Vsetín Mountains in the Czech part of the Outer Western Carpathians.The VsetínskáBečva River is highly channelized,with the majority of channelization efforts involving riverbank stabilization,weirs,or grade control structures.The study hypothesized a correlation between the spatial arrangement of the channel,as indicated by the channel width symmetry ratio,and the angle between the tributary and main-stem river,and the increased morphological activity,evidenced by changes in average bed depth at the CHZs.The correlation coefficient(r)and p significance were employed to describe the relationships among the parameters.The results indicated a significant correlation between channel width and the catchment area symmetry ratio(r=0.747,p=0.001),likely influenced by channel regulation works(e.g.,channel shape or size),which are often artificially adjusted to accommodate local hydrological conditions and flood discharges for flood protection.A significant inverse correlation between channel width symmetry ratio and average main-stem channel depth was also found(r=-0.584,p=0.022).
文摘在CIMT2021中国国际机床展览会上,恩斯克投资有限公司(日本精工株式会社中国总部,以下简称NSK)作为全球知名的机床关键零部件制造企业,展示了当今数控机床的精密部件解决方案。本次CIMT展会,NSK的参展主题为"More Than Precision",展示的产品为NSK最近1-2年开发的新技术与解决方案,部分产品首次在日本以外的展会中展出,NSK中国产业机械事业本部总经理方达针对明星产品做了详细介绍。
