Kuvugurura kwambere

Mu 1885, ikigo cya Leta ya New York cyateguwe na Olmsted ahitwa Niagara cyahinduwe parike ya mbere y’igihugu, kandi cyahise gihinduka ahantu hazwi cyane ba mukerarugendo n’abashitsi kugira ngo barebe ubwiza bw’ishyamba ry’amazi yo muri Amerika ndetse n’isumo rinini rya Horseshoe ryambukiranya umupaka wa Kanada. Ariko hari ikibazo: Isumo rya Niagara ryatakaje inkuba. Iterambere ry’amashanyarazi “isiganwa ry’intwaro” hagati y’ibihugu byombi kuzamuka byasobanuraga amazi make ugereranyije na mbere yatembaga hejuru y’imvura ku mpande zombi.

Nyuma yuko Kanada na Amerika bashyize umukono ku masezerano yo gutandukanya imigezi ya Niagara mu 1950, baganiriye kuri gahunda nyinshi - zirimo guhindura Niagara “isumo rimwe na rimwe” izatangira ku cyumweru gusa - mbere yo kwemera kuyobya kimwe cya kabiri cya metero kibe 200.000 z'umugezi wa Niagara. -isegonda-isegonda ya kabiri ya hydropower mumasaha yamanywa mugihe cyagenwe cyubukerarugendo.Ibipupe byukuri byimibonano mpuzabitsina

Macfarlane agira ati: “Ibyo bivuze ko uramutse ugiye ku Isumo rya Niagara kuri Noheri, cyangwa igihe icyo ari cyo cyose mu gihe cy'itumba, ibyo ubona byose ni kimwe cya kane cy'amazi agenda hejuru y'amazi.”National Geographic. “Ibindi bihembwe bitatu bizenguruka [kugwa] muri tunel zinyuranye.” Umusaza Impeta ya Melina Igitsina

Amasezerano yo mu 1950 yanashyizeho gahunda yo guhisha ingufu z'amashanyarazi ku ruzi rwa Niagara no ku masoko azwi. Ba injeniyeri b'Abanyakanada bayoboye uruzi mu bice bito, biturika kandi bibaza inkombe z'isumo rya Horseshoe, babigabanya metero amagana kugira ngo baremye umwobo utavunitse utwikiriwe n'umwenda muto, umwe umwe kugira ngo batange urugero rw'ubunini. “Telecolorimeter” yubatswe byabigenewe yafashaga abajenjeri kwemeza ko kugwa kuruhande rwa Kanada byakomeje kuba igicucu cyiza cyubururu kibisi. Ongera ushushanye impande za Horsehoe Fall yagabanije igicu, cyari ikibazo cy’ubukerarugendo busanzwe.Guswera Igipupe Cyigitsina

Abanyamerika bashinzwe kubungabunga ibidukikije bababajwe no kwivanga kwa geologiya, ariko abajenjeri barabyanze berekana ko Isumo rya Niagara risanzwe ryangirika ibirenge byinshi ku mwaka uko byagenda kose - aho biherereye ni nko mu bilometero umunani uvuye aho amazi yatangiriye kurya Escarpment ya Niagara mu myaka 12,000 ishize.

Macfarlane abisobanura agira ati: “Ariko niba ufite amazi make cyane hejuru yayo, kugwa ntibishobora kwangirika vuba.” Ni ubuhe buryo bwiza bwo kubungabunga Isumo rya Niagara, abajenjeri bavuze ko, kuruta kugabanya umuvuduko w'amazi hejuru y’imvura?