Ukugeleza kwemisele evulekile kutholakala eNdalweni kanye nasezindlini ezenziwe ngabantu. ENdalweni, ukugeleza okuzolile kubonakala emifuleni emikhulu eduze kwemifula yayo: isibonelo uMfula iNayile phakathi kwe-Alexandria neCairo, uMfula iBrisbane eBrisbane. Amanzi agelezayo atholakala emifuleni yasezintabeni, emifuleni egelezayo kanye nasezikhukhuleni. Izibonelo zakudala zifaka phakathi ama-cataract oMfula iNayile, imifudlana yaseZambesi e-Afrika kanye namanzi aseRhine.
UMfula iWisconsin kanye nezigxobo zesihlabathi ngo-Agasti, 1966 - zibheke phezulu komfula.
Iziteshi ezivulekile ezenziwe ngumuntu zingaba iziteshi zokunikeza amanzi okunisela, ukuphakelwa kukagesi namanzi okuphuza, isiteshi sokuhambisa amanzi ezitshalweni zokuhlanza amanzi, imigwaqo yamanzi eneziphepho, imithombo yomphakathi, amapayipi angaphansi kwemigwaqo kanye nemizila yezitimela.
Ukugeleza kwemisele evulekile kubonakala ezimweni ezincane kanye nezinkulu. Isibonelo, ukujula kokugeleza kungaba phakathi kwamasentimitha ambalwa ezitshalweni zokuhlanza amanzi kanye nangaphezu kwamamitha ayi-10 emifuleni emikhulu. Ijubane elimaphakathi lokugeleza lingaba ngaphansi kuka-0.01 m/s emanzini athule kuya ngaphezu kuka-50 m/s endaweni yokuchitheka kwamanzi ephezulu. Ububanzi bokuchitheka kwamanzi2 bungasukela ku-Q ~ 0.001 l/s ezitshalweni zamakhemikhali kuya ku-Q > 10 000 m3/s emifuleni emikhulu noma ezindaweni zokuchitheka kwamanzi. Nokho, esimweni ngasinye sokugeleza, indawo yendawo ekhululekile ayaziwa kusengaphambili futhi inqunywa ngokusebenzisa izimiso zokuqhubeka kanye nomfutho.
Ngakho-ke ekuthuthukisweni okusheshayo kwesayensi nobuchwepheshe kwanamuhla, ukubuyekezwa komkhiqizo, okuyimikhiqizo ye-hydrological elinganisa izinga lokugeleza kweziteshi ezivulekile ehlakaniphile futhi enembile kakhudlwana, kanje:
Isikhathi sokuthunyelwe: Septhemba-29-2024