CAJ | 학술논문

近年来,干旱气象已开始进入非传统旱区的三江平原,为研究这一气象灾害,文章以红兴隆分局局直及其所辖10个农场的年平均降水为研究对象,采用Morlet小波对其进行年平均降水序列多时间尺度分析,显示在不同时间尺度下,三江平原旱、涝交替变化的过程.结果表明,其年平均降水周期具有3年和11年两个主要阶段.这两个主要周期的变化,主导着年平均降水变化的特性,且自2008年以来,三江平原年降水变化的大趋势是低于其多年平均水平,并会持续若干年.
근년래,간한기상이개시진입비전통한구적삼강평원,위연구저일기상재해,문장이홍흥륭분국국직급기소할10개농장적년평균강수위연구대상,채용Morlet소파대기진행년평균강수서렬다시간척도분석,현시재불동시간척도하,삼강평원한、로교체변화적과정.결과표명,기년평균강수주기구유3년화11년량개주요계단.저량개주요주기적변화,주도착년평균강수변화적특성,차자2008년이래,삼강평원년강수변화적대추세시저우기다년평균수평,병회지속약간년.
In order to research the drought phenomenon of Sanjiang Plain that has appeared in the unconventional drought region fmquently in recent years,the article took the annual average precipitation of Hongxinglong Branch Bureau and its 10 famls as the basic data,to analyze the multi-time scales variation characteristics with the application of a complex Modet wavelet.The alternate variation process of drought and flood were also shown in the different time scales.The results showed that annual average precipitation series had two main periods which were 3 years and 11 years;the changes of the two main periods played a major role in variant characteristics of annual average precipitation;and the major variant trend of the annual average precipitation has been in the low flow since 2008.