5、iaareawereconcluded,whichcouldbedividedinto4kinds,includingnorthwestflowtype,horizontalgroovetype,slotpassagetypeandvortextype.ThemostadvantageweathertypeofconvectionoccurredinLinxiaareawasnorthwestflowtypeorhorizontalgroovetype,followedbyslotpassagetype. K