Amagagasi adlala indima ebaluleke kakhulu ekuguqukeni kwamachibi. Kuyinto eyenzeka ngezikhathi ezithile futhi ekwazi ukuhambisa uquqaba lwamanzi ngaphakathi nangaphandle kogu. Njengoba imvelaphi yamagagasi ingaba yinkimbinkimbi ngandlela thile, sizokwenabisa i-a incazelo yamagagasi ezingane.
Ngakho-ke, kule ndatshana sizokutshela incazelo yamagagasi ezingane nokuthi lokhu kuvela kanjani.
Incazelo yamagagasi ezingane
Isenzo selanga namandla adonsela phansi enyanga senza ukunyakaza emanzini amaningi angenela ogwini. Inyanga yisiphuphutheki esinamandla amakhulu kumagagasi futhi sihlanganiswa ukukhangwa yilanga. Isenzo samandla adonsela phansi sincike kubukhulu bomzimba wasezulwini okukhulunywa ngawo. Kulokhu, ilanga linamandla amakhulu adonsela phansi kodwa futhi lisekude kakhulu nomhlaba wethu. Lesi yisizathu esenza Inyanga yisathelayithi enamandla amakhulu kunawo wonke amanzi asemhlabeni.
Manje sesizochaza ngamagagasi ezingane nokuthi zisebenza kanjani. Kumele sengeze ukuhamba komhlaba emandleni asetshenziswa yinyanga nomhlaba ngendlela ehlanganisiwe. Umhlaba uhamba ngokujikeleza nangokuhumusha ngokuqhubekayo. Yenza ukunyakaza okuzungezayo, ngenkathi ukunyakaza kokuhumusha kuzungeze ilanga. Ukunyakaza kokujikeleza kunamandla aziwa ngokuthi yi-centrifugal force. Amandla amaningi enza ukukhiqiza lo mkhuba wamanzi enza ngasikhathi sinye. Yinyanga eyenza isenzo esikhulu kunazo zonke.
Amagagasi asebenza ngendlela eyindilinga njengoba iplanethi yethu ithatha usuku ukwenza inguquko ephelele. Lokhu kuzenza zihambisane ngokuphelele nenyanga. Ngakho-ke, kufanele sicabange ukuthi kunomoya owodwa kuphela ophakeme usuku lonke. Noma kunjalo, akunjalo. Kunamagagasi amabili aphakeme noma amagagasi aphezulu kumijikelezo yamahora ayi-12, kuyilapho kukhona namanye amagagasi amabili aphansi noma amagagasi aphansi.
Kungani kwenzeka imijikelezo yolwandle
Ekuchazweni kwamagagasi ezingane kufanele sisho ezinye izindawo ezenzeka ngasikhathi sinye kwiplanethi yethu. Umhlaba nenyanga kwakha uhlelo oluzungeza isikhungo sokuzungeza. Yinyanga eheha amanzi lapho yayimi mpo futhi, ngakho-ke, amanzi ayenyuka. Lokhu kulapho sinamagagasi aphezulu. Ngakolunye uhlangothi lomhlaba, into efanayo izokwenzeka ngenxa yamandla we-centrifugal akhiqizwa ukunyakaza komhlaba. Kumele kucatshangwe ukuthi lo mgagasi ophakeme unamandla aphansi uma ubheka ibanga elikude nenyanga.
Njengoba kungebona bonke ubuso bomhlaba obuhambisana nenyanga, lapho ezingekho, kwenzeka okuphambene. Amandla adonsela phansi kanye ne-centrifugal ayaphikisana futhi aholele ekutheni kube nomswakama ophansi. Ezindaweni lapho kunamagagasi aphansi khona, izinga lolwandle ogwini luphansi kakhulu. Ngokuphambene nalokho, ezindaweni ezinamagagasi aphezulu ulwandle luphakeme kakhulu. Lokhu kungabonakala ngeso lenyama ngoba kunezindawo lapho zibonakala khona kakhulu kunezinye. Uyabona ukuthi usuku lonke lolwandle lunendawo engaphezulu noma encane ngokuya ngamagagasi nenani lamanzi.
Enye yezingozi ezingadalwa amagagasi aphezulu kulapho exutshwe nesiphepho.
Ama-Tides achaze izingane: imijikelezo
Ukuze senze incazelo eyiyo yamagagasi ezingane, kufanele sicabange ngokuhamba kweplanethi yethu ukuze siqonde wonke umjikelezo kahle. Kumele sikhumbule ukuthi iplanethi yethu ijikeleza kwi-axis yayo yokuzungeza. Inyanga izungeza umhlaba ngokuhumusha futhi Kuthatha cishe izinsuku ezingama-29 ukuqeda ukuzungeza kwayo. Lokhu kusho ukuthi iplanethi yethu ayihambisani ncamashi nenyanga njalo emahoreni angama-24. Thatha okungaphezulu kwalokho. Leli qiniso libizwa ngokuthi usuku lwenyanga futhi yilokho okuphawula umjikelezo wamaza.
Kuyisizathu sokuthi kungani umjikelezo ophelele wamaza aphakeme kanye namaza aphakeme kungamahora ayi-12. Umjikelezo phakathi kwegagasi eliphakeme nogagasi oluphansi amahora angama-6 kuphela, yize kungenjalo ngaso sonke isikhathi. Siyazi ukuthi iplanethi yethu ayakhiwe nje kuphela ngamanzi futhi umhlaba ongalingani nawo unethonya kumagagasi. Esinye isici okufanele sibhekwe yi-geometry yemigqa, ukujula kwezindawo ezisogwini, imisinga yasolwandle, umoya nobubanzi esikuwo. Ngezinye izikhathi kuthonywa nengcindezi yasemkhathini.
Amagagasi entwasahlobo nokuqubuka kwesiphepho
Njengoba sike sakhuluma, ukuheha kwenyanga okunamandla amakhulu emanzini. Kepha kunezinhlobo eziningana zamagagasi. Ngakolunye uhlangothi, sinamagagasi entwasahlobo. Imayelana ne- uhlobo olumqansa kakhulu lwamaza aphakeme naphansi olwenzeka lapho inyanga nelanga ziqondaniswe noMhlaba. Kungaleso sikhathi lapho womabili la mabutho edonsa khona amanzi ngobubanzi obukhulu futhi kwakheka kakhulu amagagasi aphezulu naphansi.
Okuphambene nakho kuyiqiniso. Lapho iLanga nenyanga zikwi-engeli elifanele, amandla akhangayo mancane, ngakho-ke isenzo samandla adonsela phansi sincane. Kungalezi zikhathi lapho amagagasi emancane futhi abizwa ngokuthi ama-neap tide. Uma okunye okuguqukayo okuthinta amagagasi ashiwo ngenhla kunenani elikhulu, ukuqhuma kwesiphepho kungakha.
Uma kuqhathaniswa nolunye ulwandle nolwandle, igagasi eliphakeme nogagasi oluphansi alwaziswa kakhulu oLwandle iMedithera. Lokhu kungenxa yokuthi ulwandle oluvaliwe impela. Kukhona yena kuphelaUkuvulwa kweStrait of Gibraltar lapho kukhona khona ukushintshaniswa kwezinqwaba zamanzi ne-Atlantic Ocean.
Ngiyethemba ukuthi ngalolu lwazi incazelo yamagagasi ezingane icacile.