Sudden Commencements in Geomagnetism
نویسندگان
چکیده
منابع مشابه
Analysis of Storm Sudden Commencements for the Years 18681967
A list of a series of 2462 ssc's was made by studying the 100-year magnetic records in two antipodal subauroral observatories and in one low-latltude observatory. Various statistical' results are set forth. The negative correlation between ssc amplitude and ri'se time postulated by Desster et al. (1960) seems to be true for the more rapid ssc's (1-4 min). Yearly numbers of ssc's are much better...
متن کاملCoronal mass ejection–driven shocks and the associated sudden commencements/sudden impulses
[1] Interplanetary (IP) shocks are mainly responsible for the sudden compression of the magnetosphere, causing storm sudden commencement (SC) and sudden impulses (SIs) which are detected by ground-based magnetometers. On the basis of the list of 222 IP shocks compiled by Gopalswamy et al. (2010), we have investigated the dependence of SC/SIs amplitudes on the speed of the coronal mass ejections...
متن کاملGeomagnetism: Theories of since 1900
A definitive history of geomagnetism is yet to be written, but brief accounts have appeared in various publications. The story up to 1940 has been summarized (Chapman and Bartels, pp. 898-936). Perhaps the most complete account is by David R. Barraclough (pp. 584-592). Brief accounts have also been given by Stuart Malin (in Jacobs, ed., Geomagnetism, 1: 1-50), and others (Multhauf and Good, pp....
متن کاملSignatures of storm sudden commencements in geomagnetic H, Y and Z ®elds at Indian observatories during 1958±1992
The work describes an intensive study of storm sudden commencement (SSC) impulses in horizontal (H), eastward (Y) and vertical (Z) ®elds at four Indian geomagnetic observatories between 1958±1992. The midday maximum of DH has been shown to exist even at the low-latitude station Alibag which is outside the equatorial electrojet belt, suggesting that SSC is associated with an eastward electric ®e...
متن کاملGrand challenges in geomagnetism and paleomagnetism
Geomagnetism and paleomagnetism is a broad sub-discipline of the Earth Sciences. I present the Grand Challenges from the perspective of a paleomagnetist and rock magnetist, hence I feel more comfortable with the paleomagnetic side of this short article than the geomagnetic side. Nevertheless, exciting things are happening in geomagnetism and the future is bright for both paleomagnetists and geo...
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ژورنال
عنوان ژورنال: Nature
سال: 1950
ISSN: 0028-0836,1476-4687
DOI: 10.1038/1651018b0