Two-step development of geomagnetic storms

被引:236
作者
Kamide, Y [1 ]
Yokoyama, N
Gonzalez, W
Tsurutani, BT
Daglis, IA
Brekke, A
Masuda, S
机构
[1] Nagoya Univ, Solar Terr Environm Lab, Toyokawa, Aichi 442, Japan
[2] Univ Tromso, Auroral Observ, N-9037 Tromso, Norway
[3] Natl Observ Athens, Inst Ionspher & Space Res, Palea Penteli 15236, Greece
[4] Inst Nacl Pesquisas Espaciais, BR-12200 Sao Jose Dos Campos, SP, Brazil
[5] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
关键词
D O I
10.1029/97JA03337
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Using the Dst index, more than 1200 geomagnetic storms, from weak to intense, spanning over three solar cycles have been examined statistically. Interplanetary magnetic field(IMF) and solar wind data have also been used in the study. It is found that for more than 50% of intense magnetic storms, the main phase undergoes a two-step growth in the ring current. That is, before the ring current has decayed significantly to the prestorm level, anew major particle injection occurs, leading to a further development of the ring current, and making Dst decrease a second time. Thus intense magnetic storms may often be the result of two closely spaced moderate storms. The corresponding signature in the interplanetary medium is the arrival of double-structured southward IMF at the magnetosphere.
引用
收藏
页码:6917 / 6921
页数:5
相关论文
共 23 条
[1]  
AKASOFU SI, 1965, PLANET SPACE SCI, V13, P297
[2]   EMPIRICAL RELATIONSHIP BETWEEN INTERPLANETARY CONDITIONS AND DST [J].
BURTON, RK ;
MCPHERRON, RL ;
RUSSELL, CT .
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1975, 80 (31) :4204-4214
[3]   SIMULATIONS OF PHASE-SPACE DISTRIBUTIONS OF STORM TIME PROTON RING CURRENT [J].
CHEN, MW ;
LYONS, LR ;
SCHULZ, M .
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1994, 99 (A4) :5745-5759
[4]  
Daglis I. A., 1997, Magnetic storms, geophysical monograph series, P107, DOI DOI 10.1029/GM098P0107
[5]   Fast ionospheric response to enhanced activity in geospace: Ion feeding of the inner magnetotail [J].
Daglis, IA ;
Axford, WI .
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1996, 101 (A3) :5047-5065
[6]   ENERGY DENSITY OF IONOSPHERIC AND SOLAR-WIND ORIGIN IONS IN THE NEAR-EARTH MAGNETOTAIL DURING SUBSTORMS [J].
DAGLIS, IA ;
LIVI, S ;
SARRIS, ET ;
WILKEN, B .
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1994, 99 (A4) :5691-5703
[7]   HYDROMAGNETIC THEORY OF GEOMAGNETIC STORMS [J].
DESSLER, AJ ;
PARKER, EN .
JOURNAL OF GEOPHYSICAL RESEARCH, 1959, 64 (12) :2239-2252
[8]   SOLAR WIND-MAGNETOSPHERE COUPLING DURING INTENSE MAGNETIC STORMS (1978-1979) [J].
GONZALEZ, WD ;
TSURUTANI, BT ;
GONZALEZ, ALC ;
SMITH, EJ ;
TANG, F ;
AKASOFU, SI .
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1989, 94 (A7) :8835-8851
[9]   CRITERIA OF INTERPLANETARY PARAMETERS CAUSING INTENSE MAGNETIC STORMS (DST LESS-THAN - 100-NT) [J].
GONZALEZ, WD ;
TSURUTANI, BT .
PLANETARY AND SPACE SCIENCE, 1987, 35 (09) :1101-1109
[10]   Observations of iron, silicon, and other heavy ions in the geostationary altitude region during late March 1991 [J].
Grande, M ;
Perry, CH ;
Blake, JB ;
Chen, MW ;
Fennell, JF ;
Wilken, B .
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1996, 101 (A11) :24707-24718