摘要
根据湄潭县1951—2012年的降水观测资料,采用累积距平法、滑动t-检验法、Yamamoto法、M-K突变检验法分析了湄潭县1951—2012年降水的突变特性.结果表明:年均和四季降水量时间序列均发生了突变;年均降水量时间序列的突变点出现在1978年、1993年、2002年;春季降水量时间序列的突变点出现在1978年;夏季降水量时间序列的突变点出现在1972年、1994年、2002年;秋季降水量时间序列的突变点出现在1983年;冬季降水量时间序列的突变点出现在1965年、1988年.
Based on the observed materials of precipitation from 1951 to 2012 in Meitan County, the following research methods such as the cumulative anomaly, moving t-test, Yamamoto method and M-K mutation test method were adopted to analyze the mutation charac- teristics of precipitation from 1951 to 2012 in Meitan County. The results showed that： the mutation occurred in the average annual and seasonal precipitation sequences; the mutation point of average annual precipitation sequence appeared in 1978, 1993, 2002; the mu- tation point of spring precipitation sequence appeared in 1978 ; the mutation point of summer precipitation sequence appeared in 1972, 1994, 2002 ; the mutation point of autumn precipitation sequence appeared in 1983 and the mutation point of winter precipitation se- quence appeared in 1965, 1988.
出处
《华北水利水电大学学报（自然科学版）》
2014年第2期6-11,共6页
Journal of North China University of Water Resources and Electric Power：Natural Science Edition
基金
水利部公益性行业科研专项(201301039)
贵州省水利厅科技专项经费资助项目(KT201313)
