湖泊介绍ppt英文

世界五大湖苏必利尔湖畔 在加拿大和美国交界处，有五个大湖，这就是闻名世界的五大淡水湖。它们按大小分别为苏必利尔湖、休伦湖、密歇根湖、伊利湖和安大略湖。 五大湖总面积约245660平方公里，是世界上最大的淡水水域。五大湖流域约为766100平方公里，南北延伸近1110公里，从苏必利尔湖西端至安大略湖东端长约1400公里。湖水大致从西向东流，注入大西洋。除密歇根湖和休伦湖外水平面相等外，各湖水面高度依次下降。 五大湖是始于约100万年前的冰川活动的最终产物。现在的五大湖位于当年被冰川活动反复扩大的河谷中。地面大量的冰也曾将河谷压低。现在的五大湖是更新世后期该地区陆续形成许多湖泊的最后阶段。 苏必利尔湖(Superior,lake)是北美洲五大湖最西北和最大的一个，也是世界最大的淡水湖之一，是世界仅次于里海的第二大湖。湖东北面为加拿大，西南面为美国。湖面东西长616公里，南北最宽处257公里，湖面平均海拔180米，水面积82103平方公里，最大深度405米。蓄水量1.2万立方公里。有近200条河流注入湖中，以尼皮贡和圣路易斯河为最大。湖中主要岛屿有罗亚尔岛(美国国家公园之一)、阿波斯特尔群岛、米奇皮科滕岛和圣伊尼亚斯岛。沿湖多林地，风景秀丽，人口稀少。苏必利尔湖水质清澈，湖面多风浪，湖区冬寒夏凉。季节性渔猎和旅游为当地娱乐业主要项目。蕴藏有多种矿物。有很多天然港湾和人工港口。主要港口有加拿大的桑德贝和美国的塔科尼特等。全年通航期为8个月。该湖1622年为法国探险家发现，湖名取自法语，意为“上湖”。 休伦湖(Huron,lake)为北美五大湖中第二大湖。它由西北向东南延伸，长331公里，最宽处163公里。湖面积59570平方公里。有苏必利尔、密歇根湖和众多河流注入。湖水从南端排入伊利湖。湖面海拔176米，最大深度229米。东北部多岛屿。湖区主要经济活动有伐木业和渔业。沿湖多游览区。4月初至12月末为通航季节，主要港口有罗克波特、罗杰期城等。休伦湖是第一个为欧洲人所发现的湖泊，名源出休伦族印第安人。 密歇根湖(Michigan,lake)也叫密执安湖，是北美五大湖中面积居第三位，唯一全部属于美国的湖泊。湖北部与休伦湖相通，南北长517公里，最宽处190公里，湖盆面积近12万平方公里，水域面积57757平方公里，湖面海拔177米，最深处281米，平均水深84米，湖水蓄积量4875立方公里，湖岸线长2100公里。有约100条小河注入其中，北端多岛屿，以比弗岛为最大。沿湖岸边有湖波冲蚀而成的悬崖，东南岸多有沙丘，尤以印第安纳国家湖滨区和州立公园的沙丘最为著名。湖区气候温和，大部分湖岸为避暑地。东岸水果产区颇有名，北岸曲折多港湾，湖中多鳟鱼、鲑鱼，垂钓业兴旺。南端的芝加哥为重要的工业城市，并有很多港口。12月中至来年4月中港湾结冰，航行受阻，但湖面很少全部封冻，几个港口之间全年都有轮渡往来。 伊利湖(Erie,lake)是北美五大湖的第四大湖，东、西、南面为美国，北面为加拿大。湖水面积25667平方公里。呈东北——西南走向，长388公里，最宽处92公里，湖面海拔174米，平均深度18米，最深64米，是五大湖中最浅的一个，湖岸线总长1200公里。底特律河、休伦河、格兰德河等众多河流注入其中，湖水由东端经尼亚加拉河排出。岛屿集中在湖的西端，以加拿大的皮利岛为最大。西北岸有皮利角国家公园(加拿大)。主要港口有美国的克利夫兰、阿什塔比拉等。沿湖工业区曾导致许多湖滨游览区关闭，上个世纪70年代末环境破坏得到控制。 安大略湖(Ontario,lake)是北美洲五大湖最东和最小的一个，北为加拿大，南是美国，大致成椭圆形，主轴线东西长311公里，最宽处85公里。水面约19554平方公里，平均深度86米，最深244米，蓄水量1688立方公里。有尼亚加拉、杰纳西、奥斯威戈、布莱克和特伦特河注入，经韦兰运河和尼亚加拉河与伊利湖连接。著名的尼亚加拉大瀑布上接伊利湖，下灌安大略湖，两湖落差99米。湖水由东端流入圣劳伦斯河。安大略湖北面为农业平原，工业集中在港口城市多伦多、罗切斯特等。港湾每年12月至来年4月不通航。 (据中国科普网)参考资料： Superior Junction in Canada and the United States, the five Great Lakes, which is famous the world's five major fresh water lake. According to the size of their superior, Lake Huron, Lake Michigan, Lake Erie and Ontario. FIVE a total area of about 245,660 square kilometers, is the world's largest source of fresh water. FIVE valley is about 766,100 square kilometers, nearly 1,110 km north-south extending from the eastern end of Lake Superior Huxi end to about 1,400 km. Generally from the West Lake to the east, and into the Atlantic Ocean. In addition to Lake Michigan and Lake Huron outside the same plane, the lake surface height were reduced. AMONG the glacier began about 100 years ago as the final product. Glacial lakes at the present time by repeatedly expanding activities in the valley. Ice Valley has a lot of ground to suppress. The late Pleistocene lakes are many lakes in the region have formed the final stage. Superior (Superior, lake) is the most lakes in North America and the largest in the Northwest and is also one of the world's largest freshwater lake, is the world's second largest after the Caspian Sea. Lake northeast of Canada, the southwest United States. Lake, 616 km from east to west, north and south as simple as 257 kilometers in size, the average altitude of 180 meters of water area of 82,103 square kilometers and a maximum depth of 405 meters. 12,000 cubic kilometers of water. There are nearly 200 rivers flow into the lake, the largest in Nipigon River and St. Louis. Royal i. lake is the main island (one of the United States National Park), the Cape of Apostle Islands, and St. AUC Mijipi cotten island of Vieques. Lingering more forest land, beautiful scenery and sparsely populated. Superior water is clear, the lake more storms Lakes Dong-han cool summer. Seasonal hunting and fishing and tourism major projects for the local entertainment industry. Stored in a variety of minerals. Artificial many natural harbors and ports. Canada's major ports, such as Thunder Bay and the United States Takenite. Navigation on the year for eight. French explorers to the lake in 1622 found that the lake name came from French, meaning "lake." Lake Huron (Huron, lake), the second of the North American Great Lakes lakes. It extends from northwest to southeast, 331 km long, 163 km wide at the maximum. Lake area of 59,570 square kilometers. A Superior Michigan and many rivers into. Lake water from the south into Illinois. Lake elevation of 176 meters and a maximum depth of 229 meters. Northeast many islands. Lakes fishery and the logging industry is the main economic activity. Lingering more touristic. Early April to the end of navigation season, a major port in Rockport, Rogers City period. Lake Huron is the first Europeans to discover the lake, the name originated from Huron Indians. Lake Michigan (Michigan, the lake) is also called Michigan, which ranks third in North American lakes, the only all American lakes. Hubei Department and the same Lake Huron, 517 km long from north to south and 190 km wide at the maximum, the lake area of nearly 120,000 square kilometers, an area of 57,757 square kilometers of waters in size, with an elevation of 177 meters and 281 meters deep, with an average depth of 84 meters, the lake Volume 4,875 cubic kilometers, 2,100 km length of Lake. About 100 of the river into which many northern island, the largest island in Beaver. Lingering shore of the lake from wave erosion of the cliffs, sand dunes many East Coast, particularly in the state of Indiana and Lake State Park's most famous sand dunes. Lakes climate is mild, to the banks of the shelters. Quite the east coast fruit producing areas, and many twists and turns in the Northshore Harbor, lake trout and more fish, salmon fishing industry flourish. Chicago important industrial city in the south, and a lot of ports. Harbor next year's mid-12 to mid-ice, obstructed navigation, but all the little lake snow, several ferry ports in the year between. Lake Erie (Erie, the lake) is the fourth North American lakes Great Lakes, East and West, to the southern United States to northern Canada. Lake area of 25,667 square kilometers. Southwest to the Northeast -- showed that 388 km long, 92 km wide at the maximum size, with an elevation of 174 meters, with an average depth of 18 meters and 64 meters in the deepest, most shallow lakes is one of the banks totals 1,200 km. Detroit River, Huron River, the Rio Grande River and other rivers into which water from the Niagara River on the eastern side of emissions. West of the island in the lake, the largest island in Canada Pillay. Point pelee national park with the north (Canada). Kailifulan major ports in the United States, such as Ashtabula. Lingering in industrial areas has resulted in the closure of many touristic lake last century late 1970s, the destruction of the environment under control. Lake (Ontario, lake) is the smallest North American lakes and most East, North Canada, the United States Southern broadly into an oval, the main east-west axis 311 km long, 85 km wide at the maximum. About 19,554 square kilometers of water, has an average depth of 86 meters deep, 244 meters and 1,688 cubic kilometers of water. A Niagara, Genesee, Oswego, into Blake and Trent River, Welland connecting Lake Erie and the Niagara River. The famous Niagara Falls connecting Lake Erie, Ontario, under irrigation, the 99-meter gap between two lakes. Water flows from the eastern side of the river. Ontario agricultural plains to the north, concentrated in the industrial port city of Toronto, the other in Rochester. Harbor each December to April next year no navigation. (According to science network)

五大湖是位于加拿大与美国交界处的几座大型淡水湖泊，按面积从大到小分别为：苏必利尔湖休伦湖密歇根湖、伊利湖和安大略湖。除密歇根湖属于美国之外，其它四湖为加拿大和美国共有。这五个湖泊所组成的五大湖是世界上最大的淡水水域，总面积达245,660平方公里，有北美洲地中海之称。Great Lakes is located in Canada and the United States at the junction of several large freshwater lakes, according to the area from largest to smallest are: Lake Superior, Lake Michigan, Lake Huron, Lake Erie and Lake Ontario. In addition to Lake Michigan are outside the United States, the other four lakes in Canada and the United States total. Composed of the five lakes, the Great Lakes is the largest source of fresh water, with a total area of 245,660 square kilometers, with North America, known as the Mediterranean.