Tsagewar igiyar ruwa

Rip tide, ko tsagewa, wani ƙaƙƙarfan igiyar ruwa ne wanda ke haifar da igiyar ruwa da ke jan ruwa ta hanyar mashigar da ke kusa da bakin teku mai shinge, a tafkin ko ruwa na cikin ƙasa inda ruwan tudu ke gudana akai-akai zuwa teku a lokacin bututun ruwa. Ruwa ne mai ƙarfi a cikin magudanar ruwa da sauran wuraren da aka rufe. Riptides sun zama mafi ƙarfi inda aka takura magudanar ruwa. Lokacin da aka sami fadowa ko buguwa, ruwan da ke fita yana gudana da ƙarfi ta hanyar mashigai zuwa teku, musamman da zarar jiragen ruwa suka daidaitaSurferToday (2024). "The differences between rip currents, undertows and rip tides". Retrieved 3 January 2024.

 Mai karfi 
A lokacin wannan faɗuwa da magudanar ruwa, tsage-tsafe na iya ɗaukar mutum zuwa teku mai nisa. Misali, guguwar ruwa a Shinnecock Inlet da ke Southampton, New York, ta yi sama da mita 300 (980 ft) a bakin teku.Leatherman, Stephen P. (2012-07-20). "Undertow, Rip Current, and Riptide". Journal of Coastal Research. 283 (4): iii–v. doi:10.2112/jcoastres-d-12-00052.1. S2CID 128555026 Saboda wannan, riptides yawanci suna da ƙarfi fiye da rip.

A lokacin da ake fama da rashin ƙarfi, ruwan ba ya motsi na ɗan lokaci kaɗan har sai ambaliya ko tashin ruwa ya fara tura ruwan teku zuwa ƙasa ta mashigin ruwa. Riptides kuma yana faruwa a wuraren da aka taru a cikin bays da lagoons inda babu raƙuman ruwa kusa da mashigai.

Ana iya kiran waɗannan ƙaƙƙarfan igiyoyin ruwa masu jujjuya ruwa, jiragen ruwa na ruwa, ko jiragen ruwa na injiniyoyi na bakin teku saboda suna ɗauke da yashi mai yawa a waje wanda ya zama sanduna mai nisa a cikin teku ko cikin bakin teku a wajen tashar shiga. Za'a yi amfani da kalmar "ebb jet" don magudanar ruwa da ke barin wani yanki mai ruɗewa, da kuma "jet na ambaliya" don kwatankwacin magudanar ruwa da ke shiga cikinsa.

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