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秦安地区全新世气候的周期振荡特征 被引量:3
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作者 S. Feng 夏敦胜 +1 位作者 汤懋苍 陈发虎 《冰川冻土》 CSCD 北大核心 2006年第1期70-75,共6页
通过对秦安大地湾8.3 m天然黄土剖面高分辨率(约为150 a)孢粉数据的研究,发现秦安地区孢粉数据与我国干旱、半干旱地区史料记载的旱涝演变有较为一致的变化,且有明显的冷干、暖湿的气候特征.奇异谱分析表明,秦安地区的旱涝变化有2 300 a... 通过对秦安大地湾8.3 m天然黄土剖面高分辨率(约为150 a)孢粉数据的研究,发现秦安地区孢粉数据与我国干旱、半干旱地区史料记载的旱涝演变有较为一致的变化,且有明显的冷干、暖湿的气候特征.奇异谱分析表明,秦安地区的旱涝变化有2 300 a、1 060 a、650 a和390 a的准振荡周期.准两千年周期与南亚季风的变化有密切的对应关系,也与太阳活动的强弱有关. 展开更多
关键词 全新世 气候变化 奇异谱分析 秦安
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A Relationship between Solar Activity and Frequency of Natural Disasters in China 被引量:2
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作者 王钟睿 冯松 汤懋苍 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2003年第6期934-939,共6页
The relationship between the length of the solar cycle, a good indicator of long-term change in solar activity, and natural disasters (drought, flood, and strong earthquakes) in China during the last 108 yearsis analy... The relationship between the length of the solar cycle, a good indicator of long-term change in solar activity, and natural disasters (drought, flood, and strong earthquakes) in China during the last 108 yearsis analyzed. The results suggest that the length of solar cycle may be a useful indicator for drought/flood and strong earthquakes. When the solar activity strengthens, we see the length of the solar cycle shorten and more floods occur in South China and frequent strong earthquakes happen in the Tibetan Plateau, but the droughts in East China as well as the strong earthquakes in Taiwan and at the western boundary of China are very few. The opposite frequencies occur when the solar activity weakens. The current study indicates that the solar activity may play an important role in the climate extremes and behavior in the lithosphere. 展开更多
关键词 length of the solar cycle natural disasters DROUGHT FLOOD EARTHQUAKE
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