場向電漿飄移速度的理論模擬研究與觀測資料之比較; simulate parallel B plasma velocity compared with observations

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Title:	場向電漿飄移速度的理論模擬研究與觀測資料之比較;simulate parallel B plasma velocity compared with observations
Authors:	李宏道;Hung-Dau Li
Contributors:	太空科學研究所
Keywords:	華衛一號;模擬;場向電漿運動;數值方法;電離層;plasma motion;ROCSAT-1;ionosphere;Satellite;Simulation
Date:	2005-03-24
Issue Date:	2009-09-22 09:47:13 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	使用TIEGCM model模擬2001年地磁安靜狀態期間，場向電漿飄移速度與電漿密度分佈與華衛一號觀測資料進行分析比對。根據電漿連續方程式(continuity equation)，場向電漿速度的散度直接決定電漿密度的分佈情形。第二部分我們單獨分析TIEGCM模擬資料，控制不同的F10.7、高度、季節等參數，分別比較對於場向中性風速、場向擴散效應、場向電漿速度、電漿密度所造成的影響，有助於我們分辨那些是影響場向電漿運動速度的主要因素。 Using the TIEGCM model to simulate parallel B plasma velocity and plasma distribution which happened in 2001 quiet time. The satellite data shows there is a large amount of plasma frequently piled up in LT12:00~16:00、MLAT15°~25°.Generally is called equator abnormal phenomenon (EIA).The simulate data shows the same phenomenon in relative position and the value also approaches equally. We further analyzed parallel B plasma velocity.The simulated and observed data all shows that a smaller value(10~20 m/sec) in equator abnormal region,and a bigger value(50~80m/sec) outside of boundary region, therefore the plasma is unable to stable existence in this region.According to continuity equation, divergence of parallel B plasma velocity direct influence plasma density distribution. At second part,we alone analyzed the TIEGCM simulate result, and control different parameter(F10.7、altitude、season),It helps us to analyse which is the primary factor to affect plasma parallel B velocity.
Appears in Collections:	[Graduate Institute of Space Science] Department of Earth Sciences

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