Eyewall replacement cycle

眼牆置換循環（英語：Eyewall replacement cycle），又稱為眼壁更替週期，是一種發生於熱帶氣旋中心的現象，在原眼牆外，形成新眼壁，並逐步移入中心，取代舊有的內眼壁。眼牆置換一般會發生於強烈的熱帶氣旋，一般發生在接近中心最高持續風速大於185公里每小時（115英里每小時）的熱帶氣

just happened tonight with Hurricane Ian. It went through a full eyewall replacement cycle, hardly blinked, grew by 50% (as measured by its RMW), and delivered

provides evidence of an eyewall replacement cycle (ERC) with concentric eyewalls depicted: a 40-nm inner eyewall and a 100-nm outer eyewall are separated by