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| 旱灾的地气环流形势分类 | |
| 引用本文： | 成青燕,汤懋苍,赵红岩.旱灾的地气环流形势分类[J].高原气象,2009,28(6):1490-1497. |
| 作者姓名： | 成青燕 汤懋苍 赵红岩 |
| 作者单位： | 1. 中国气象局,兰州干旱气象研究所/甘肃省干旱气候变化与减灾重点实验室/中国气象局干旱气候变化与减灾重点开放实验室,甘肃,兰州,730020兰州区域气候中心,甘肃,兰州,730020 2. 兰州区域气候中心,甘肃,兰州,730020;中国科学院,寒区旱区环境与工程研究所西部气候环境与灾害实验室,甘肃,兰州,730000 3. 兰州区域气候中心,甘肃,兰州,730020 |
| 基金项目： | 干旱气象基金，国家重点基础研究发展规划(973计划) |
| 摘 要： | 旱灾与地气环流有很好的相关， 根据对近50多年旱灾成因的普查， 可将形成旱灾的地气环流形势分成4类： (1)大地冷涡； (2)月（季）际地温的大片负变温区； (3)大震前的大旱（旱震关系）； (4)强震地热涡出现之后的地冷涡区。研究发现， 大地冷涡因其波长较长， 故移动缓慢， 造成的干旱一般均较严重。T′32的月际负变温区一般是表示该地区地下热活动减弱， 故可预测下月将少雨； T′32的季际负变温区， 同理也可预测下季将少雨。强地震对正常地热活动是一个强干扰， 我国的大旱大涝几乎均与强地震有关。 |
| 关 键 词： | 旱灾 强地震 地气环流 月（季）际变温 土壤温度变化 |
Classification of Underground General Circulation of Drought |
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| CHENG Qing-yan,TANG Mao-cang,ZHAO Hong-yan.Classification of Underground General Circulation of Drought[J].Plateau Meteorology,2009,28(6):1490-1497. | |
| Authors: | CHENG Qing-yan TANG Mao-cang ZHAO Hong-yan |
| Abstract: | A good correlation exists between drought and underground general circulation. Based on about the data of drought of recent 50 years,there are 4 types in total of who create drought. The first is large underground cold vortex,the second is large negative area anomaly of inter-monthly (inter-seasonal) underground temperature of 3.2 m depths. The third is serious drought before strong earthquakes (drought-earthquake relationships). The last one is region that cold vortex stayed after a macroseism. Further more,we found that cold vortexes slowly move because of its long wavelength,and droughts result from cold vortexes are usually more serious. Negative anomaly of underground temperature of 3.2 m depths shows a weakened thermal process,it can be seen a signal to predict rainless the next month. After all,both serious droughts and floods of China are related to strong earthquake. |
| Keywords: | Drought Microseism Underground general circulation Inter-monthly (inter-seasonal) of under ground temperature soil temperature variation |
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