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题名: COMPARISON OF CME/SHOCK PROPAGATION MODELS WITH HELIOSPHERIC IMAGING AND IN SITU OBSERVATIONS
作者: Zhao, Xinhua; Liu, Ying D.; Inhester, Bernd; Feng, Xueshang; Wiegelmann, Thomas; Lu, Lei
作者部门: 空间科学部
通讯作者: Zhao, XH (reprint author), Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing 100190, Peoples R China. ; Zhao, XH (reprint author), Max Planck Inst Sonnensyst Forsch, D-37077 Gottingen, Lower Saxony, Germany.
关键词: shock waves ; solar-terrestrial relations ; solar wind ; Sun: coronal mass ejections (CMEs)
刊名: ASTROPHYSICAL JOURNAL
ISSN号: 0004-637X
出版日期: 2016
卷号: 830, 期号:1, 页码:48
收录类别: SCI
项目资助者: National Basic Research Program (973 program) [2012CB825601, 2012CB957801] ; National Natural Science Foundation of China [41231068, 41274179, 41474153, 41374173, 41274192] ; Specialized Research Fund for State Key Laboratories of China ; China Scholarship Council [201404910005] ; Youth Innovation Promotion Association of Chinese Academy of Sciences [2016133] ; MPS fund ; Recruitment Program of Global Experts of China ; CSC [201404910005]
英文摘要: The prediction of the arrival time for fast coronal mass ejections (CMEs) and their associated shocks is highly desirable in space weather studies. In this paper, we use two shock propagation models, i.e., Data Guided Shock Time Of Arrival (DGSTOA) and Data Guided Shock Propagation Model (DGSPM), to predict the kinematical evolution of interplanetary shocks associated with fast CMEs. DGSTOA is based on the similarity theory of shock waves in the solar wind reference frame, and DGSPM is based on the non-similarity theory in the stationary reference frame. The inputs are the kinematics of the CME front at the maximum speed moment obtained from the geometric triangulation method applied to STEREO imaging observations together with the Harmonic Mean approximation. The outputs provide the subsequent propagation of the associated shock. We apply these models to the CMEs on 2012 January 19, January 23, and March 7. We find that the shock models predict reasonably well the shock's propagation after the impulsive acceleration. The shock's arrival time and local propagation speed at Earth predicted by these models are consistent with in situ measurements of WIND. We also employ the Drag-Based Model (DBM) as a comparison, and find that it predicts a steeper deceleration than the shock models after the rapid deceleration phase. The predictions of DBM at 1 au agree with the following ICME or sheath structure, not the preceding shock. These results demonstrate the applicability of the shock models used here for future arrival time prediction of interplanetary shocks associated with fast CMEs.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/5840
Appears in Collections:空间科学部_期刊论文

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