The Yangtze river is China's first river! The world's third, behind the Nile river and the amazon river. Water is the world's third. In 2001, China academy of sciences in remote sensing research experts chaired below, and liu less by making use of satellite remote sensing image measurement precision measuring and calculation, to decimal point. 6211.31 length measured Yangtze river. The topics covered by nearly 40 picture group of yrb although the satellite images, the satellite image is from the earth's resources satellite, the resolution to 30 meters. By calculating the way along the river, Yangtze river centerline measurement vector for three times, and the measured vector for three times, the computer operation and geometric correction times after that result.
In this study, when the Yangtze river headwaters of music as a source of music, for when the position of longitude 94 degrees 35 '54 seconds, 32 degrees north latitude and altitude 43:54 seconds 5042 meters. When song by the source to the capsule (ba) 360.8 kilometers from a 357.6 kilometers, TongTianHe tuotuo river, 787.7 kilometers, the jinshajiang 2322.2 kilometers, yibin, we usually 2740.6 kilometers below 6370 or said 6300 KMS. River area of more than 180 million square kilometers, the annual average sea water about more than 9600 billion cubic meters. Watershed between the lat 24 ° 35 ° ~ 30 migrant 90 °, 45 migrant 25 ° ~ 112 analysis and analysis, area more than 180 million square kilometers (not including the huaihe river), the total land area. In the third world. It has a long history, and with the Yellow River together, become the cradle of the Chinese nation, nurturing generations of children, known as "the mother river".
In the Yangtze river water amount of 2 million kilowatts, China is the richest river water. Mainly concentrated in hydropower resources in the first step, and the second and the third step, the second step the ladder of junction, because this sudden drop, topography, fast-flowing here. Yangtze river navigable 280 much kilometers, known as the three gorges dam "gold waterway," said.
The Mississippi River Mississippi River
The fourth river is the longest and process, North America and the water is the biggest river. Located in South America. "The Mississippi" is derived from the English, Mississippi, indians Algonquin clan language, "missy" (misi) and "sipi) than (" is a big, old" and "water" and "the Mississippi River" or "namely", "old man river. River originates from west lake superior, Minnesota, northwestern altitude 501 meters, little moxa tower, south lake in the central plains, through the gulf of Mexico. The length of 39.5 km to originate; if the largest tributary sdistributed in the Rocky Mountains along the Missouri river, the source in the world, km long 6262 fourth. Five great lakes near the north and south of the gulf of Mexico, and the Appalachian mountains, west to the Rockies, the area of 322 million square kilometers, accounting for approximately 1/8 north area of about 250. Collected more than east west bank branch tributary. And long, forming huge asymmetric dentrites river estuary water is rich, nearly. Where annual average flow of 1.88 million m3 / SEC.
The Mississippi River to the north, its main tributary basin area together according to plan for the world's third-largest stream (approximately 310 million square kilometres (1.2 million square miles). As a highly industrialized countries, has become a central artery river in the world is one of the busiest commercial waterway. The river flows north stroppy mainland to some of the most fertile farmland by humans, is now fully controlled properly. Basin including the United States in 31 states and two Canadian provinces of all or part of it. The Mississippi River has two BangZhi - the Ohio river west and east of the Missouri river. The Mississippi River source of ai in Minnesota, Lake Lake (tower), was originally a Itasca trickle south winds.
In the Mississippi River downstream geologist, is a long and tortuous winding river sediment deposition of typical, In the river floodplains, forming numerous bending left many meandering remains, bow lake, ox yokes of swamps and lake water.
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