Cascadas de Niagara

Le Cascadas de Niagara (in anglese Niagara Falls), locate in le Fluvio Niagara disaquate Laco Erie a in Laco Ontario, es le nomine collective pro le Ferro de Cavallo (Horseshoe Falls, o Cascadas Canadian, Canadian Falls) e le adjacente Cascadas American (American Falls) conjunctemente con le comparativemente parve Velo de Sponsa (Bridal Veil Falls) que combinate forma le rata de fluxo le plus alte de omne cascadas mundial e ha un cadita vertical de plus que 50 metros (165 ft). Le Cascadas de Niagara forma le bordo international inter le provincia canadian de Ontario e le stato american de New York, etiam formante le fin del sud del Ravina de Niagara. Le cascadas se situa 27 kilometros (17 mi) nord-nord-west de Buffalo, New York e 121 kilometros (75 mi) sud-sud-est de Toronto, inter le citates gemine de Niagara Falls, Ontario e Niagara Falls, New York.

Introduction

Le Cascadas de Niagara se compone duo sectiones major, seperate per le Insula del Capra (Goat Island): le Ferro de Cavallo in le latere canadian e le Cascadas American in le latere american. Le Velo de Sponsa le plus parve etiam se loca in le latere american, seperate del cascadas primari per Insula del Luna (Luna Island). Le linea de frontiera international originalmente se designava a transverso del Ferro de Cavallo in 1819, sed le frontiera longemente ha essite in disputa a causa de erosion natural e construction.

Le Cascadas de Niagara se formava quando glacieros recedeva al fin del glaciation de Wisconsin (le epocha glacie ultime), e aqua del Grande Lacos novemente formate sculpeva un sentiero per le Escarpemento de Niagara en route al Oceano Atlantic. Ben que non exceptionalmente alte, le Cascadas de Niagara es multe large. Plus que 170 million litros de aqua cade del linea de cresta tote minute in fluxo alte, e quasi 110 million litros in media.

Le Cascadas de Niagara se renomina pro lor beltate e como un fonte de valor de energia hydroelectric. Diriger le balancia inter usos recreational, commercial, e industrial ha essite un defia pro le dispenseros del cascasads depost le seculo 19.

Characteristicas

Le Ferro de Cavallo cade circa 53 metros, e le altitude del Cascadas American varia inter 21-30 metros a causa de le presentia de petras grosse a su base. Le plus large Ferro de Cavallo es circa 790 metros large, durante que le Cascadas American es 320 metros large. Le distantia inter le extremitate american del Cascadas de Niagara e le extremitate canadian es 1039 metros.

Le volumine de aqua approchante le cascadas durante le saison de fluxo de puncta a alicun vices pote esser quanto 5700 m3 (5,7 million litros) per secunda. Proque le fluxo es un function directe del elevation del aqua de Laco Erie, illo typicamente attinge su puncto in le fin de primavera o le initio de estate. Durante le menses de estate 2800 metros cubic per secunda de aqua realmente transversa le cascadas, circa 90% de le qual cade a basso de le Cascadas Horseshoe, durante le resto se diverte a facilitates hydroelectric. Isto es complite per empleante un dica con portas mobile in alto del currente del Ferro de Cavallo. Le fluxo del cascadas se reduce additionalmente a nocte, e durante le saison touristic base in le hiberno remane a un plan 1400 metros cubic per sedunda. Diversion de aqua es regulate per le Consilio International de Controlo del Fluvio Niagara.

Le color verde del aqua fluente a basso de le Cascadas de Niagara es un subproducto del estimate 60 tonna per minuta de sales dissolvite e "farina de petra" (petra molente multo finmente) generava per le fortia erosive del Fluvio Niagara mesme. Le rata de erosion actual es approxitivemente 30 centimetros per anno, a basso de un media historic de 90 centimetros per anno. Nonobstante, se estima que de hic a 50 000 annos, mesmo a iste rata de erosion reducte, le resto del 32 kilometros a Laco Erie habera essite minate e le cascadas cessara exister.

Geologia

Le characteristicas que deveiva le Cascadas de Niagara era create per le glaciation de Wisconsin ante circa 10.000 annos. Le fortias mesme etiam creava le Grande Lacos de America del Nord e le Fluvio Niagara. Tote era excavate per un lamina glacial continental que se pulsava per le region, approfundante alicun canales de fluvios formar lacos, e barrante alteres con restos. Scientistas argue que il existe un valle vetere, interrate per resto glacial, al location approximate del Canal Welland presente.

Quando le glacie disgelava, le Grande Lacos alte vacuava in le Fluvio Niagara, que imitava le topographia reordinate trans le Scarpamento de Niagara. In curso de temporo, le fluvio secava un ravina per le precipito affrontante nord. A causa del interactiones de tres formationes major de petra, le lecto roccose del fluvio non erodeva regularmente. Le formation de petra superior se componeva de calcario e dolomite Lockport resistente contra erosion. Illo strato dur de petra erodeva plus lentemente que le materiales subjacente. Le photo aeree al dextre monstra clarmente le copertura dur de petra, le Formation de Lockport (Silurian Medie), que subjace le rapidos super le cacadas, e approximativemente le tertio alte del muro alte del ravina.

Immediatemente infra le formation de petra dur, comprendente circa duo tertios del precipito, cubava le Formation de Rochester inclinate, plus debile, plus molle (Silurian Basse). Iste formation se componeva principalmente de shale, ben que illo ha alicun stratos magre de calcario. Illo etiam contine fossiles ancian. Eventualmente le fluvio erodeva le strato molle que supportava le stratos dur, secar infra le copertura de petra dur, que se distaccava in pecias grande. Iste processo se repetava vices innumerabile, eventualmente trenchar le cascadas. Submergite in le fluvio in le valle basse, celate de vista, es le Formation de Queenston (Ordovician Alte), que se compone de shales e arenarios fin. Tote tres formationes se cubava in un mar ancian, lor differentias de character derivante de conditiones cambiante inter ille mar.

Ante circa 10.900 annos, le Cascadas de Niagara se locava inter le citates de Queenston, Ontario e Lewiston, New York del epocha actual, ma erosion de lor cresta ha causate le cascadas retirar se approximativemente 10,9 kilometros verso le sud. Le Cascadas Horseshoe, que es approximativemente 790 metros large, etiam ha se cambia lor figura per le processo de erosion; evolver de un arco parve, a in un curva in figura de ferro de cavallo, a in le V invertite gigantic actual. Justo alto del currente del location actual del cascadas, Insula del Capra divide le curso del Fluvio Niagara, resultar in le separation del Ferro de Cavallo canadian al west del Cascadas American e Velo de Sponsa al est. Ingenieria ha retardate erosion e recession.

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  • Niagara Falls, New York
  • Niagara Falls, Ontario
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Tips & Hints
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John George
14 August 2015
The view is amazing. Come later in the day so you can stick around for the fall lighting show, and fireworks if there are any. Boat tour recommend! Cheap parking just past the Skylon tower parking.
John Hankus
9 March 2015
Best place to view the falls. Walk the entire length for some nice scenery. Lots of tourists around in your way though. Don't be that guy who stops his car in the road for pictures. Pay for parking.
aeroRafa
21 January 2013
If you like photography, the tower on the Canadian side has the best view. Winter is the best time to visit. People don't like the cold so you an get great shots without tourists crossing your path
Gergely Nagy
8 October 2015
This is rather a mini Las Vegas than a city around the falls now already. What more is to come? Perfect place to party in the night if you have the budget for it.
Wladimir Coutinho Mesquita
Amazing!!! Beautiful during the day and amazing during the night with the LED Lights changing colors on the Falls. Loved it!
Deborah Lynn Rumble-Dani         BA 1995
Hotels and restaurants around Niagara Falls are not too expensive and the food is high quality with excellent service. The Falls are magnificent and worth it to see.
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