摘要
对各种不同性质、不同级别、不同日面位置及不同时间的耀斑与婴儿出生率变化关系的分析 ,显示出不同耀斑对人体影响的不同 .各级Hα 耀斑、X射线耀斑、质子耀斑的当日效应都很明显 ,这反映了人体对耀斑电磁辐射和高能粒子辐射的敏感性 ,耀斑爆发后的第 2～ 5d还有一个出生率高峰 ,能量越大的耀斑 ,这个峰出现得越早 ,这与低能离子云到达地球的时间相符 .太阳活动低谷年爆发的 1b、1n级Hα
In order to study the effects of different flares on human body, the relations between the baby birthrate and the outbursts of flares of different kinds and different classifications are investigated. The flare samples for the periods from 1985 to 1995 are taken. They include H α flares, X_ray flares and large proton flares. We divide these flares into different grades according to their classes or importance, regions on the solar surface and the time of outbursts. The H α flares are divided into f,n, and b hierarchies in an ascending order of flare intensity and every hierarchy is subdivided into S, 1, 2, 3, and 4 grades in and ascending order of its area. The X_ray flares are divided into C, M, X grades in an ascending order of X_ray flux. About 160_thousand babies are investigated in Shandong province. The statistical results obtained by using the 'epoch superposing' show that the effects of different flares on human bodies are different. The H α and X_ray flares in the day in the middle and western parts of the solar surface have more obvious effects after flares. The baby birthrates corresponding to two b flares (including 3b and 4b) go up rapidly and reach the maximum in the flare_outbursting day, which are 10%～16% higher than those of the previous days, and 7%～9% higher than the average value. Effects of the 1b flares are smaller than those of the 2b flares in the day of flare outburst. The maximun of birthrate is at the 4 th day after the 1b flares. Effects of the 2n and 1n flares are similar. There are birthrate peaks during the appearance of these two flares, but the birthrate peak values are smaller than those related to the 2b flares, and the birthrate peak values related to the 1n flares are smaller than those related to the 2n flares. Flares at night in the eastern part of the solar surface don't have obvious effects, but in 2 to 5 days of all H α flare outbursts, the delayed birthrate peaks can be seen, and the larger the energy of flare is the earlier birthrate peak occurs. In the days of outbursts of the X_ray flares of C, M, X grades, the birthrates are all higher, and the differences between these birthrates and the average birthrate are obvious. These birthrates have also the delayed effects in 5 th , 4 th and 3 rd day respectively. In the same day and in the next day of the outbursts of the relativistic proton flares, the birthrate reaches the maximum, which is 9% larger than the average value. The effects of smaller proton flares are small, and the maximum arrives in the third day of the flares. The effects of small flares, such as H α flares of 1b and 1n grades and X_ray flares of C grade which occur during the years when the sun is quiet, should not be ignored.
出处
《南京大学学报（自然科学版）》
CAS
CSCD
北大核心
2002年第4期471-478,共8页
Journal of Nanjing University（Natural Science）
