第1个回答 2008-09-21
瀑布的介绍：
Niagara Falls (French: les Chutes du Niagara) are massive waterfalls on the Niagara River, straddling the international border separating the Canadian province of Ontario and the U.S. state of New York. The falls are 17 miles (27 km) north-northwest of Buffalo, New York, 75 miles (120 km) south-southeast of Toronto, Ontario, between the twin cities of Niagara Falls, Ontario, and Niagara Falls, New York.
Niagara Falls is composed of two major sections separated by Goat Island: Horseshoe Falls, on the Canadian side of the border and American Falls on the United States side. The smaller Bridal Veil Falls also is located on the American side, separated from the main falls by Luna Island. Niagara Falls were formed when glaciers receded at the end of the Wisconsin glaciation (the last ice age), and water from the newly-formed Great Lakes carved a path through the Niagara Escarpment en route to the Atlantic Ocean. While not exceptionally high, the Niagara Falls are very wide. More than six million cubic feet (168,000 m³) of water falls over the crest line every minute in high flow,[1] and almost 4 million cubic feet (110,000 m³) on average. It is the most powerful waterfall in North America.[citation needed]
The Niagara Falls are renowned both for their beauty and as a valuable source of hydroelectric power. Managing the balance between recreational, commercial, and industrial uses has been a challenge for the stewards of the falls since the 1800s.
周边旅游的，分为美国和加拿大两部分：
American side
From the U.S. side, the American Falls can be viewed from walkways along Prospect Point Park, which also features the Prospect Point Park observation tower and a boat dock for the Maid of the Mist. Goat Island offers more views of the falls and is accessible by foot and automobile traffic by bridge above the American Falls. From Goat Island, the Cave of the Winds is accessible by elevator and leads hikers to a point beneath Bridal Veil Falls. Also on Goat Island are the Three Sisters Islands, the Power Portal where a huge statue of Nikola Tesla can be seen, and a walking path which enables views of the rapids, the Niagara River, the gorge, and all of the Falls. Most of these attractions lie within the Niagara Falls State Park.[29]
The Niagara Scenic Trolley offers guided trips along the American Falls and around Goat Island. Panoramic and aerial views of the falls can also be viewed from the Flight of Angels helium balloon ride, or by helicopter. The Niagara Gorge Discovery Center showcases the natural and local history of Niagara Falls and the Niagara Gorge. A casino and luxury hotel was opened in Niagara Falls, New York, by the Seneca Indian tribe. The Seneca Niagara Casino occupies the former Niagara Falls Convention Center. The new hotel is the first addition to the city's skyline since completion of the United Way office building in the twenties.[29][30]
Canadian side
On the Canadian side, Queen Victoria Park features manicured gardens, platforms offering spectacular views of both the American and Horseshoe Falls, and underground walkways leading into observation rooms which yield the illusion of being within the falling waters. The observation deck of the nearby Skylon Tower offers the highest overhead view of the Falls, and in the opposite direction gives views as far as distant Toronto. Along with the Minolta Tower (formerly the Seagrams Tower, currently the Konica Minolta Tower), it is one of two towers in Canada with a view of the Falls.[31]
Along the Niagara River, the Niagara River Recreational Trail runs the 35 miles (56 km) from Fort Erie to Fort George, and includes many historical sites from the War of 1812.[32]
The Whirlpool Aero Car, built in 1916 from a design by Spanish engineer Leonardo Torres y Quevedo, is a cable car which takes passengers over the whirlpool on the Canadian side. The Journey Behind the Falls - accessible by elevators from the street level entrance - consists of an observation platform and series of tunnels near the bottom of the Horseshoe Falls on the Canadian side.[33][34]
There are two casinos on the Canadian side of Niagara Falls, the Niagara Fallsview Casino Resort and Casino Niagara. The former is situated in the Fallsview Tourist Area, alongside many of the area's hotels, whilst the latter is adjacent to Clifton Hill, on Falls Avenue, a major tourist promenade.[35]
参考资料：wiki
第2个回答 2008-09-21
维基百科：
Niagara Falls (French: les Chutes du Niagara) are massive waterfalls on the Niagara River, straddling the international border separating the Canadian province of Ontario and the U.S. state of New York. The falls are 17 miles (27 km) north-northwest of Buffalo, New York, 75 miles (120 km) south-southeast of Toronto, Ontario, between the twin cities of Niagara Falls, Ontario, and Niagara Falls, New York.
Niagara Falls is composed of two major sections separated by Goat Island: Horseshoe Falls, on the Canadian side of the border and American Falls on the United States side. The smaller Bridal Veil Falls also is located on the American side, separated from the main falls by Luna Island. Niagara Falls were formed when glaciers receded at the end of the Wisconsin glaciation (the last ice age), and water from the newly-formed Great Lakes carved a path through the Niagara Escarpment en route to the Atlantic Ocean. While not exceptionally high, the Niagara Falls are very wide. More than six million cubic feet (168,000 m³) of water falls over the crest line every minute in high flow,[1] and almost 4 million cubic feet (110,000 m³) on average. It is the most powerful waterfall in North America.[citation needed]
The Niagara Falls are renowned both for their beauty and as a valuable source of hydroelectric power. Managing the balance between recreational, commercial, and industrial uses has been a challenge for the stewards of the falls since the 1800s.
Characteristics
Niagara Falls is divided into the Horseshoe Falls and the American Falls. The Horseshoe Falls drop about 173 feet (53 m), the height of the American Falls varies between 70-100 feet (21 m) because of the presence of giant boulders at its base. The larger Horseshoe Falls are about 2,600 feet (792 m) wide, while the American Falls are 1,060 feet (323 m) wide. The volume of water approaching the falls during peak flow season may sometimes be as much as 202,000 cubic feet per second (5,720 m³/s).[2] By comparison Africa's spectacular Victoria Falls has over 19 million cubic feet (546,000 m³) of water falling over its crest line each minute during the peak of the wet season (320,000 cu ft/9,100 m³ per second). Since the flow is a direct function of the Lake Erie water elevation, it typically peaks in late spring or early summer. During the summer months, 100,000 cubic feet per second (2,832 m³/s) of water actually traverses the Falls, some 90% of which goes over the Horseshoe Falls, while the balance is diverted to hydroelectric facilities. This is accomplished by employing a weir with movable gates upstream from the Horseshoe Falls. The Falls flow is further halved at night, and during the low tourist season in the winter, remains a flat 50,000 cubic feet per second (1,416 m³/s). Water diversion is regulated by the 1950 Niagara Treaty and is administered by the International Niagara Board of Control (IJC).[3] Viewpoints on the American shore generally are astride or behind the falls. The falls face directly toward the Canadian shore. Thus, the most complete views of Niagara Falls are available from the Canadian side of the river. It is about a two hour drive from Toronto.
Geology
The features that became Niagara Falls were created by the Wisconsin glaciation, about 10,000 years ago. The same forces also created the North American Great Lakes and the Niagara River. All were dug by a continental ice sheet that drove through the area like a giant bulldozer, deepening some river channels to make lakes, and damming others with debris.[4] Scientists believe that there is an old valley, buried by glacial drift, at the approximate location of the present Welland Canal.
When the ice melted, the upper Great Lakes emptied into the Niagara River, which followed the rearranged topography across the Niagara Escarpment. In time, the river cut a gorge through the north facing cliff, or cuesta. Because of the interactions of three major rock formations, the rocky bed did not erode evenly. The top rock formation was composed of erosion-resistant limestone and Lockport dolostone. That hard layer of stone eroded more slowly than the underlying materials. The aerial photo clearly shows the hard caprock, the Lockport Formation (Middle Silurian), which underlies the rapids above the Falls, and approximately the upper third of the high gorge wall.
Immediately below the hard-rock formation, comprising about two thirds of the cliff, lay the weaker, softer, sloping Rochester Formation (Lower Silurian). This formation was composed mainly of shale, though it has some thin limestone layers. It also contains ancient fossils. In time, the river eroded the soft layer that supported the hard layers, undercutting the hard caprock, which gave way in great chunks. This process repeated countless times, eventually carving out the Falls.
Submerged in the river in the lower valley, hidden from view, is the Queenston Formation (Upper Ordovician), which is composed of shales and fine sandstones. All three formations were laid down in an ancient sea, their differences of character deriving from changing conditions within that sea.
The original Niagara Falls were near the sites of present-day Queenston, Ontario, and Lewiston, New York, but erosion of their crest has caused the waterfalls to retreat several miles southward. Just upstream from the Falls' current location, Goat Island splits the course of the Niagara River, resulting in the separation of the Canadian Horseshoe Falls to the west from the American and Bridal Veil Falls to the east. Although engineering has slowed erosion and recession in this century, the Falls will eventually recede far enough to drain most of Lake Erie, the bottom of which is higher than the bottom of the Falls. Engineers are working to reduce the rate of erosion to postpone this event as long as possible.
In entertainment and popular culture
In October 1829, Sam Patch, who called himself "the Yankee Leapster" jumped from a high tower into the gorge below the falls and survived; this began a long tradition of daredevils trying to go over the Falls. On October 24 1901, 63-year-old Michigan school teacher Annie Edson Taylor was the first person to go over the Falls in a barrel as a publicity stunt; she survived, bleeding, but virtually unharmed. Soon after exiting the barrel, she said, "No one should ever try that again." Unfortunately, the fortune she hoped to make from a later lecture tour was never realized, as her manager was a con-man who took everything she owned. Previous to Taylor's own attempt, on October 19th a domestic cat named Iagara was sent over the Horseshoe Falls in her barrel to test its strength. Contrary to rumours at the time, the cat survived the plunge unharmed and later was posed with Taylor in photographs.[18] Since Taylor's historic ride, 14 other people have intentionally gone over the Falls in or on a device, despite her advice. Some have survived unharmed, but others have drowned or been severely injured. Survivors of such stunts face charges and stiff fines, as it is illegal, on both sides of the border, to attempt to go over the Falls.
In 1918, there was a near disaster when a barge, known locally as the Niagara Scow, working up-river broke its tow, and almost plunged over the falls. Fortunately, the vessel grounded on rocks just short of the falls.[19]
Other daredevils have made crossing the Falls their goal, starting with the successful passage by Jean François "Blondin" Gravelet in 1859. These tightrope walkers drew huge crowds to witness their exploits. Their wires ran across the gorge, near the current Rainbow Bridge, not over the waterfall itself. Among the many was Ontario's William Hunt, who billed himself as "Signor Fanini" and competed with Blondin in performing outrageous stunts over the gorge. Englishman Captain Matthew Webb, the first man to swim the English Channel, drowned in 1883 after unsuccessfully trying to swim the rapids down river from the Falls.
In what some called the "Miracle at Niagara", Roger Woodward, a seven-year-old American boy, was swept over the Horseshoe Falls protected only by a life vest on July 9, 1960, as two tourists pulled his 17-year-old sister Deanne from the river only 20 feet (6 m) from the lip of the Horseshoe Falls at Goat Island.[20] Minutes later, Roger was plucked from the roiling plunge pool beneath the Horseshoe Falls after grabbing a life ring thrown to him by the crew of the Maid of the Mist boat. His survival, which no one thought possible, made news throughout the world.
On July 2, 1984, Canadian Karel Soucek from Hamilton, Ontario successfully plunged over the Horseshoe Falls in a barrel with only minor injuries. Soucek was fined $500 for performing the stunt without a license. In 1985, he was fatally injured while attempting to re-create the Niagara drop at the Houston Astrodome. His aim was to climb into a barrel hoisted to the rafters of the Astrodome and to drop 180 feet (55 m) into a water tank on the floor. After his barrel released prematurely, it hit the side of the tank and he died the next day from his injuries.[21]
In August 1985, Steve Trotter, an aspiring stunt man from Rhode Island, became the youngest person ever (age 22) and the first American in 25 years to go over the Falls in a barrel. Ten years later, Trotter went over the Falls again, becoming the second person to go over the Falls twice and survive. It was also the second-ever "duo"; Lori Martin joined Trotter for the barrel ride over the Falls. They survived the fall but their barrel became stuck at the bottom of the falls, requiring a rescue.
On September 28th 1989 Niagara's own Peter DeBernardi (42) and Jeffery James Petkovich (25) became the first "team" to successfully make it over the falls in a two person barrel. The stunt was conceived by Peter DeBenardi, who wanted to discourage youth from following in his path of addictive drug use. Peter was also trying to leave a legacy and discourage his son Kyle Lahey DeBernardi (2) from using addictive drugs. Peter DeBernardi had originally expected to have a different passenger, however Peter's original partner backed out of the plans and Peter was forced to look for an alternative, Jeffery Petkovich agreed to the stunt. Peter claims he spent an estimated $30,000 making his barrel including; harness's steel and fiberglass construction with steel bands and viewing ports. Peter's Barrel also included a radio for music and news reports, rudders to help steer the barrel through the falls, oxygen, and a well protected video camera to record the journey over the falls. They emerged shortly after going over with minor injuries and were charged with performing an illegal stunt under the Niagara Parks Act.
On September 27, 1993 John "David" Munday, of Caistor Centre, Ontario, became the first person to survive going over the falls twice.[22]
Kirk Jones of Canton, Michigan became the first known person to survive a plunge over the Horseshoe Falls without a flotation device on October 20, 2003. While it is still not known whether Jones was determined to commit suicide, he survived the 16-story fall with only battered ribs, scrapes, and bruises.[23]
A newspaper account in the late 19th century does cite a bulldog believed to have successfully, though accidentally, endured the passage.
All "over the Falls" survivors have passed over the Horseshoe Falls, where there are fewer boulders, and the current can "throw" a person farther away from the brink to avoid them.
Movies and television
Already a huge tourist attraction and favorite spot for honeymooners, Niagara Falls visits rose sharply in 1953 after the release of Niagara, a movie starring Marilyn Monroe and Joseph Cotten. Later in the 20th century, the Falls was a featured location in 1980s movie Superman II, and was itself the subject of a popular IMAX movie, Niagara: Miracles, Myths and Magic.[24] . Much of the episode Return of the Technodrome in the 1987 Teenage Mutant Ninja Turtles cartoon series take place near the Niagara Falls and its hydroelectric plant. Illusionist David Copperfield performed a trick in which he appeared to travel over the Horseshoe Falls in 1990. The Falls, or more particularly, the tourist-supported complex near the Falls, was the setting of the short-lived Canadian television show Wonderfalls in early 2004. More recently, location footage of the Falls was shot in October 2006 to portray "World's End" of the movie Pirates of the Caribbean: At World's End.[25]
Tourism
Peak numbers of visitors occur in the summertime, when Niagara Falls are both a daytime and evening attraction. From the Canadian side, floodlights illuminate both sides of the Falls for several hours after dark (until midnight). The number of visitors in 2008 is expected to total 20 million and by 2009, the annual rate is expected to top 28 million tourists a year.[26] The oldest and best known tourist attraction at Niagara Falls is the Maid of the Mist boat cruise, named for an ancient Ongiara Indian mythical character, which has carried passengers into the whirlpools beneath the Falls since 1846. Cruise boats operate from boat docks on both sides of the falls.[27][28]
American side
From the U.S. side, the American Falls can be viewed from walkways along Prospect Point Park, which also features the Prospect Point Park observation tower and a boat dock for the Maid of the Mist. Goat Island offers more views of the falls and is accessible by foot and automobile traffic by bridge above the American Falls. From Goat Island, the Cave of the Winds is accessible by elevator and leads hikers to a point beneath Bridal Veil Falls. Also on Goat Island are the Three Sisters Islands, the Power Portal where a huge statue of Nikola Tesla can be seen, and a walking path which enables views of the rapids, the Niagara River, the gorge, and all of the Falls. Most of these attractions lie within the Niagara Falls State Park.[29]
The Niagara Scenic Trolley offers guided trips along the American Falls and around Goat Island. Panoramic and aerial views of the falls can also be viewed from the Flight of Angels helium balloon ride, or by helicopter. The Niagara Gorge Discovery Center showcases the natural and local history of Niagara Falls and the Niagara Gorge. A casino and luxury hotel was opened in Niagara Falls, New York, by the Seneca Indian tribe. The Seneca Niagara Casino occupies the former Niagara Falls Convention Center. The new hotel is the first addition to the city's skyline since completion of the United Way office building in the twenties.[29][30]
Canadian side
On the Canadian side, Queen Victoria Park features manicured gardens, platforms offering spectacular views of both the American and Horseshoe Falls, and underground walkways leading into observation rooms which yield the illusion of being within the falling waters. The observation deck of the nearby Skylon Tower offers the highest overhead view of the Falls, and in the opposite direction gives views as far as distant Toronto. Along with the Minolta Tower (formerly the Seagrams Tower, currently the Konica Minolta Tower), it is one of two towers in Canada with a view of the Falls.[31]
Along the Niagara River, the Niagara River Recreational Trail runs the 35 miles (56 km) from Fort Erie to Fort George, and includes many historical sites from the War of 1812.[32]
The Whirlpool Aero Car, built in 1916 from a design by Spanish engineer Leonardo Torres y Quevedo, is a cable car which takes passengers over the whirlpool on the Canadian side. The Journey Behind the Falls - accessible by elevators from the street level entrance - consists of an observation platform and series of tunnels near the bottom of the Horseshoe Falls on the Canadian side.[33][34]
There are two casinos on the Canadian side of Niagara Falls, the Niagara Fallsview Casino Resort and Casino Niagara. The former is situated in the Fallsview Tourist Area, alongside many of the area's hotels, whilst the latter is adjacent to Clifton Hill, on Falls Avenue, a major tourist promenade.[35]