Earthquakes as a potential contributing factor to climate change at multi-decadal scale

Climate changes at the multi-decadal scale are often associated with multi-decadal phase shifts of the dominant sea surface temperature （SST） pattern, such as the Pacific Decadal Oscillation （PDO）. The PDO may be associated with the North Pacific branch of the Thermohaline Circulation （THC）. Great earthquakes （M 〉8）, particularly along the route of the THC, might modulate the vertical mixing and bring deep, cold water to surface, contributing to multi-decadal changes in surface currents and the PDO. This may eventually lead to multi-decadal climate changes. We tested this hypothesis for the Pacific Ocean where great earthquakes have been frequently recorded. We found associations between the PDO and recurrent earthquakes along the route of the deep currents of the THC in the modern period since 1900, and relationships between hydroclimate change in Monsoonal Asia and historical earthquakes since 1300. However, it should be noted that this hypothesis is very preliminary and has many gaps that needs further evidences from more observational records and modeling studies.     

大连地区太阳能资源分布特征及区划

利用1970—2012年大连国家基准气候观测站历年逐月太阳总辐射和日照百分率实测资料,应用统计方法计算出大连地区各月太阳总辐射气候学公式,进而计算出周边无辐射观测地区的太阳总辐射量并了解大连地区太阳能资源分布情况。结果表明：大连南部、长海和瓦房店太阳能资源较好,中部和黄海沿岸较差;春夏季好,秋冬季差,5月份最好,12月份最差;太阳能资源各年代呈小幅度波动,近几年逐渐下降。 根据QX/T 89-2008太阳能资源评估方法,大连地区属于太阳能资源丰富区。     

Seasonal changes in sea ice conditions along the Northeast Passage in 2007 and 2012

Remote sensing data from passive microwave and satellite-based altimeters, associated with the data measured underway, were used to characterize seasonal and spatial changes in sea ice conditions along...     

平顶山盐田互层状盐岩蠕变特性与试验模型研究

仇月萍  邓文君  李希茜  王蓉  王磊 《大气科学学报》2013,36(1):88-95

2007年2月汕头赤潮事件水文气象及海水理化因子影响分析

2007年2月2日～3月5日期间,广东省汕头附近港湾及南澳岛附近海湾发生了"球形棕囊藻"赤潮事件.由于持续时间较长,导致附近养殖场大量扇贝死亡,直接经济损失达300万元以上.这次赤潮事件主要表现有3个特点:(1)藻类密度不大.表层海水中只有零星破碎的胶囊体,底层海水中胶囊体密度约3～5个/升;(2)影响范围较大,从刚开始在汕头妈屿和莱芜湾发现,到广澳前江、南澳岛四周、牛田洋、海门、濠江等沿岸海域都出现藻类碎片;(3)持续时间长,从2月2日监测人员发现有赤潮藻类胶囊体,一直持续到3月5日才基本消亡.本文主要从海洋水文气象环境场及海水理化因子方面对这次赤潮事件进行分析.