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Global warming ,La Nina, explain mudflow, landslides and what is flood?
Global Warming refers to an average increase in the Earth's temperature, [ which in turn causes changes in climate. La Niña is a coupled ocean-atmosphere phenomenon that is the counterpart of El Niño as part of the broader El Niño-Southern Oscillation climate pattern. During a period of La Niña, the sea surface temperature across the equatorial Eastern Central Pacific Ocean will be lower than
normal by 3–5 °C. A mudslide is the most rapid (up to 80 km/h, or 50 mph) and fluid type of downhill mass wasting. It is a rapid movement of a large mass of mud formed from loose soil and water. Similar term is mudflow. A landslide or landslip is a geological phenomenon which includes a wide range of ground movement, such as rockfalls, deep failure of slopes and shallow debris flows, which can occur in offshore, coastal and onshore environments. A flood is an overflow of an expanse of water that submerges land.Flooding may result from the volume of water within a body of water, such as a river or lake, which overflows or breaks levees, with the result that some of the water escapes its usual boundaries. ]
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User: Explain how the impact of human activities contributed towards flooding.

User: Global warming ,La Nina, explain mudflow, landslides and what is flood?

Weegy: Global Warming refers to an average increase in the Earth's temperature, [ which in turn causes changes in climate. La Niña is a coupled ocean-atmosphere phenomenon that is the counterpart of El Niño as part of the broader El Niño-Southern Oscillation climate pattern. During a period of La Niña, the sea surface temperature across the equatorial Eastern Central Pacific Ocean will be lower than normal by 3–5 °C. A mudslide is the most rapid (up to 80 km/h, or 50 mph) and fluid type of downhill mass wasting. It is a rapid movement of a large mass of mud formed from loose soil and water. Similar term is mudflow. A landslide or landslip is a geological phenomenon which includes a wide range of ground movement, such as rockfalls, deep failure of slopes and shallow debris flows, which can occur in offshore, coastal and onshore environments. A flood is an overflow of an expanse of water that submerges land.Flooding may result from the volume of water within a body of water, such as a river or lake, which overflows or breaks levees, with the result that some of the water escapes its usual boundaries. ]
Expert answered|zaldy|Points 110|

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Asked 3/24/2012 12:27:48 PM
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Explain the causes of floods, both natural factors as well as human activities
Question
Updated 4/7/2013 2:06:46 PM
1 Answer/Comment
Causes of Flood:

Natural floods are the floods that are caused naturally by the overflow of the huge volume of water, from rivers, lakes, oceans, or by heavy rains or downpours, hurricanes, cyclones, or tsunamis, etc. Natural floods could be Riverine floods – caused by rivers; Estuarine floods – caused by a combination of sea tidal surges and storm-force winds; or Coastal floods – caused by cyclones, hurricanes and tsunamis. These are one of the most common natural disasters.
Catastrophic floods are the floods that are caused by some significant and unexpected events, for instance dam breakages.

Heavy rainfalls are one of the major causes of floods. The level of water in rivers or lakes rises due to heavy rainfalls. When the level of water rises above the rive banks or dams, the water starts overflowing, which causes floods. The water overflows to the areas adjoining to the rivers, lakes or dams, causing floods or deluge. The flood water causes havoc and great destruction in the areas where it flows. Floods occur more in the regions that get heavy rainfalls.
Floods are also caused due to heavy snow melting. Global temperature is rising due to global warming. The rising temperature makes the snow caps melt faster. Continuous and fast melting snow raises the level of oceanic water, which consequently raises the level of water in rivers, and when the level of water in rivers rises above the rive banks, it causes floods.

There are also several human causes of floods. Deforestation is one of the major causes of floods. Trees are being cleared fast from large areas. As result, soil is easily eroded, and the eroded soil gets settled at the bottom of rivers and seas, which raises the level of water in rivers and seas, which consequently causes floods.

Sometimes floods are caused due to poor dams that can not hold great volume of water and they give up causing floods in adjoining areas. Hence, there are always different causes of floods. However, human causes of floods can be avoided. Humans should let the nature go its own way.

Added 4/7/2013 2:06:47 PM
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