排序方式: 共有479条查询结果,搜索用时 15 毫秒
301.
Cong Huang Ji-Yao Xu Xiao-Xin Zhang Dan-Dan Liu Wei Yuan Guo-Ying Jiang 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2018,61(7):1873-1879
In this work, we utilize thermospheric wind observations by the Fabry-Perot interferometers (FPI) from the Kelan (KL) station (38.7°N, 111.6°E, Magnetic Latitude: 28.9°N) and the Xinglong (XL) station (40.2°N, 117.4°E, Magnetic Latitude: 30.5°N) in central China during the St. Patrick’s Day storm (from Mar. 17 to Mar. 19) of 2015 to analyze thermospheric wind disturbances and compare observations with the Horizontal Wind Model 2007 (HWM07). The results reveal that the wind measurements at KL show very similar trends to those at XL. Large enhancements are seen in both the westward and equatorward winds after the severe geomagnetic storm occurred. The westward wind speed increased to a peak value of 75?m/s and the equatorward wind enhanced to a peak value of over 100?m/s. There also exist obvious poleward disturbances in the meridional winds during Mar. 17 to Mar. 19. According to the comparison with HWM07, there exist evident wind speed and temporal differences between FPI-winds and the model outputs in this severe geomagnetic storm. The discrepancies between the observations and HWM07 imply that the empirical model should be used carefully in wind disturbance forecast during large geomagnetic storms and more investigations between measurements and numerical models are necessary in future studies. 相似文献
302.
303.
基于高职院校二级学院科研管理体制,分析科研活动中院校领导、二级学院领导、科研项目负责人、教师个体研究者和院校科研管理机构不同角色的职责和使命,提出二级学院为科研管理主体,以重点学科发展需求为导向,以科研项目申报为抓手的科研管理思路,实现提高科研管理水平,创造良好的科研环境的目的。 相似文献
304.
305.
306.
307.
308.
309.
吕桂凤 《华北航天工业学院学报》2014,(2):58-59,62
由于不良生活习惯、非婚性行为、就业压力、社会和家庭等多种因素的存在,当代大学生身心健康受到不同程度影响,建议学校和家庭通力合作,采取相应的措施,帮助大学生树立健康生活理念,提高健康水平。 相似文献
310.