东南太平洋海域45年波浪时空变化规律研究

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中图分类号：U65 ;P731 文献标志码：A 文章编号：105-9857（2025）01-043-09

SpatialandTemporalVariationAnalysisofWavein theSoutheastPacificOceanOverthePast45years

Abstract：Usingthe ERA5 reanalysis datafrom the European Centrefor Medium-Range WeatherForecasts（ECMWF），thesatialandtem oraldistributionsofwindwaves，swelsand mixedwavesintheSoutheastPacificwatersareanalzedforthe eriod1979—2023，aswelas thelong-termtrendofthewavefieldusingtheTheil-sen method.Theresultsshowthat：the windfieldinthisareais dominated bythesoutheasttrade winds，showing a gradualy decreasingdistributionfromthemid-lowlatitudetotheequatorialand mid-latitudeareas;the mixedwavesandswelsaremainlyafectedbytheremoteswelsoftheSoutheastPacificOcean， and the wind and waves are controlled by the local wind field;the wind field，mixed waves， swels，andwindwavesinthedryseasonperiodarehigherthanthatintherainyseasonperiod; thewaveperiodisdominatedbythe medium-longperiod;thejointdistributionofthewave heiht eriodshowsanu erbuleelisoid;themixedwaves，swels，andwindwavesallast foralongtime;andthe wavefield，mixed waves，swels，and wind wavesalcontinueto changeforalongtime.waves，swelwavesandwindwavesalcontinuetoshowageneralupwardtrend，withgrowthratesof 0.21cm/a ， 0.26cm/a and 0.20cm/a ，respectively，withswel wavesshowingthemostsignificantgrowth.Itisexpectedthattheseastatechangerulesintime andspaceobtainedinthispapercanprovidereferenceforshiping，oceanengineringconstructionandoceanener utilizationintheSoutheastPacificOcean.

Keywords：SoutheastPacificOcean，Wavespatialandtemporaldistribution，Theil-Senmethod

0 引言

随着“一带一路”倡议的推进，中国与南美国家在基础设施互联互通等领域的合作日益密切。（剩余9291字）