中文摘要：

地球自转参数变化引发大气、洋流变化,因此本文试图探索西太平洋气旋频数、强度与地球自转参数的相关性,结果表明：日长月平均值与下一月气旋频数呈正比,章动月标准差与下一月气旋强度相关性较好;频数与强度极端年份的日长、章动逐日变化有显著差异,频数最大值年与最小值年对应的日长位相呈明显的反相,相位若接近同步,则大值年对应的日长明显大于小值年;频数极端年份4-6月章动的位相差异明显,7-9月章动幅度差异明显;强度极端年对应的前30天逐日日长呈非常显著的反相关系,x方向章动具有明显差异,大值年的x方向章动值均偏小.

英文摘要：

Change of the earth rotation parameters leads to change of atmospheric and ocean currents,based on theory,the paper attempts to study the correlation between frequency、intensity of cyclone in West Pacific and the earth rotation parameters,results show that： monthly mean LOD is proportional to cyclone frequency next month,the correlation is significant between nutation standard difference and cyclone intensity; the divergence of the daily LOD、nutation variation is significant in extreme years of frequency and intensity. Phase of LOD is opposition in maximum frequency years and in minimum frequency years,the value of LOD is higher in maximum frequency years if phase is synchronous; the difference of nutation phase is significant from Apr to Jun in extreme value years,and the amplitude difference of nutation is evident from Jul to Sept;The daily LOD phase is inverse in 30 days before the very day of the extreme intensity value,and the nutation value of X direction in maximum years is less.