Introduction EQUATOR Network provides unique access to collated expertise and resources for good reporting of health research, The resources are aimed at researchers （authors of research articles）, journal editors, ...Introduction EQUATOR Network provides unique access to collated expertise and resources for good reporting of health research, The resources are aimed at researchers （authors of research articles）, journal editors, peer reviewers, and developers of reporting guidelines,展开更多
The E_(s) layer is a thin layer that concentrates metallic ions in the mesosphere and lower thermosphere(MLT)region.When it occurs,it can affect the performance of the Global Navigation Satellite System and high/very ...The E_(s) layer is a thin layer that concentrates metallic ions in the mesosphere and lower thermosphere(MLT)region.When it occurs,it can affect the performance of the Global Navigation Satellite System and high/very high frequency(HF/VHF)radio communications.Previous studies mainly focused on the one-dimensional structure of E_(s) layer in the vertical direction.However,due to the limitation of observations,the horizontal structure of E_(s) layers is not yet fully understood.This study investigated the horizontal structure of E_(s) layers using amateur radio data in the European sector during the summer of 2020.Statistical analysis shows that the horizontal structure of E_(s) layer is mainly elongated in the east-west direction.In addition,we investigated the dynamics of the E_(s) layers,which primarily propagates in the northeast-southwest direction with a speed of 50-200 m/s.The results provide us a way for obtaining the horizontal structure and dynamic features of E_(s) layers,which can help improve our understanding of the formation and evolution of E_(s) layers.展开更多
文摘Introduction EQUATOR Network provides unique access to collated expertise and resources for good reporting of health research, The resources are aimed at researchers （authors of research articles）, journal editors, peer reviewers, and developers of reporting guidelines,
基金supported by the National Natural Science Foundation of China(42230207,42104165).
文摘The E_(s) layer is a thin layer that concentrates metallic ions in the mesosphere and lower thermosphere(MLT)region.When it occurs,it can affect the performance of the Global Navigation Satellite System and high/very high frequency(HF/VHF)radio communications.Previous studies mainly focused on the one-dimensional structure of E_(s) layer in the vertical direction.However,due to the limitation of observations,the horizontal structure of E_(s) layers is not yet fully understood.This study investigated the horizontal structure of E_(s) layers using amateur radio data in the European sector during the summer of 2020.Statistical analysis shows that the horizontal structure of E_(s) layer is mainly elongated in the east-west direction.In addition,we investigated the dynamics of the E_(s) layers,which primarily propagates in the northeast-southwest direction with a speed of 50-200 m/s.The results provide us a way for obtaining the horizontal structure and dynamic features of E_(s) layers,which can help improve our understanding of the formation and evolution of E_(s) layers.
