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Arc/Info8中有关路径系统转换的问题
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作者 王生才 张中凯 王峰 《东北测绘》 2003年第2期36-37,共2页
阐述在Arc/Info8中路径系统的一些基本概念,以及Coverage路径系统转换到Geodatabase中的原理和应该注意的问题。
关键词 Arc/Info8 路径 GIS 地理数据库 地理相关模型 转换 事件
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New understanding achieved from 2 years of Chinese ionospheric investigations 被引量:2
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作者 Libo Liu Weixing Wan 《Science Bulletin》 SCIE EI CAS CSCD 2016年第7期524-542,共19页
In the mainland of China, the number of ionospheric research groups is more than 10. Around 110 articles related to ionospheric physics have been published during 2014–2015. In this annual national report of the Comm... In the mainland of China, the number of ionospheric research groups is more than 10. Around 110 articles related to ionospheric physics have been published during 2014–2015. In this annual national report of the Committee on Space Research(COSPAR), we will outline some recent progresses in ionospheric studies conducted by the Chinese mainland scientists in the past 2 years. These investigations cover(1) the ionosphere responses to geomagnetic activities;(2) ionospheric climatology and structures;(3) couplings between the ionosphere, plasmasphere and lower atmosphere, and possible seismic signatures in the ionosphere;(4) ionospheric irregularities and scintillation;(5) ionospheric models, data assimilation and simulations;(6) ionospheric dynamics and electrodynamics;(7) progresses in the observation methodology and technique; and(8) planetary ionospheres. Such investigations will strengthen our ability to monitor the ionosphere,provide a better understanding of the ionospheric states and the underlying fundamental processes, and improve the ionospheric modeling, forecasting, and related applications. 展开更多
关键词 IONOSPHERE Ionospheric climatology Ionospheric dynamics Ionospheric coupling Planetary ionospheres Ionospheric disturbance
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