Windthrow

A major reason of making the gaps is the windthrow that is a factor of ecology turbulence, and it is a common disaster for wood productions, therefore , to study mechanism of windthrow is very important.

风倒是林隙的主要成因,是森林生态的一个扰动因子。

The major factors to affect windthrow contain the biologic mechanical attribute of tree, the mutual action of soil and base, disturbance of wind and so on.

风倒指树木在风载作用下发生的干折、倒伏或连根拔起现象,是风灾过后森林中常见的一种自然灾害现象。

It introduces mainly the process of the most heavy shower occurring in south seacoast of Zhejiang caused by typhoon trough from August 3 to 4 , 2001.

利用NCEP 1x1再分析资料对2001年8月3～4日浙南闽北的台风倒槽暴雨过程,根据螺旋度(Helicity)、Q矢量分析了过程中的暴雨演变以及雁荡山脉诱生中尺度低涡发生发展的原因。

The results show that the autumn tropic cyclone landing at the east of Guandong province is often accompanied with an inverted trough extending to the middle-south Zhejiang coast.

发现秋季在厦门以南至广东东部登陆的台风,在浙中南沿海形成台风倒槽,该倒槽内的暖湿切变线的中尺度对流复合体(Mesoscale Convective Complex,MCC)是引起特大暴雨的重要条件。

The results show that the autumn tropic cyclone landing at the east of Guangdong Province often accompanies with an inverted trough extending to the mid-south Zhejiang coast.

文中主要以8712号台风和9909号热带风暴为个例,运用MM5中尺度模式结合Q矢量等物理量计算NCEP资料,通过模拟、统计、分析研究,讨论浙东南温州沿海秋后台风倒槽强降雨特征。