Occurrence rate of SAR arcs during the 23rd solar activity cycle

被引：4

作者：

Alexeyev, V. N. ^{[1
]}

Ievenko, I. B. ^{[1
]}

Parnikov, S. G. ^{[1
]}

机构：

[1] Russian Acad Sci, Yu G Shafer Inst Cosmophlys Res & Aeron, Siberian Branch, Yakutsk 677980, Russia

来源：

ADVANCES IN SPACE RESEARCH | 2009年 / 44卷 / 04期

关键词：

SAR arc; Photometric observations; Solar cycle; Geomagnetic activity; RED; DYNAMICS;

D O I：

10.1016/j.asr.2009.04.024

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The occurrence rate of SAR arcs during 1997-2007 has been analyzed based on the photometric observations at the Yakutsk meridian (Maimaga station, corrected geomagnetic coordinates: 57 degrees N, 200 degrees E). SAR arcs appeared in 114 cases (similar to 500 h) during similar to 370 nights of observations (similar to 3170 h). The occurrence frequency of SAR arcs increases to 27% during the growth phase of solar activity and has a clearly defined maximum at a decline of cycle 23. The SAR arc registration probability corresponds to the variations in geomagnetic activity in this solar cycle. The dates, intervals of UT, and geomagnetic latitudes of SAR arc observations at the Yakutsk meridian are presented. (C) 2009 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：524 / 527

页数：4