A Brief Note On Floods And Its Effects On Soil Conditions

Any rainfall increases fluvial erosion. When rain does fall, this creates ephemeral streams causing water erosion due to fast forces of water. Flash floods are possible as well creating even more erosion.

There are six different types of water erosion: splash erosion, sheet erosion, rill erosion, gully erosion, valley or stream erosion, and bank erosion. Splash erosion is when raindrops hit soil and small soil particles are displaced. Sheet erosion is when raindrops remove soil in thin layers. During rill erosion, small concentrated flow paths are created. “These paths create a sediment source and delivery system for hillslope erosion. Areas where precipitation rates exceed soil infiltration rates are more prone to this type of erosion. During gully erosion, water flows in narrow channels during or after heavy rains or melting snow. The gullies can erode to considerable depths. Valley or stream erosion is created by water flowing alongside land. It extends downward, deepening a valley, and extending the valley into the hillside. This occurs more frequently

They can be caused by several different events including the undercutting a slope, or wearing away at the base of a hill from underground, because of stream erosion, or heavy or lengthy rainfall, rapid snowmelts, quick changes in groundwater. Other causes are seismic activity from construction or earthquakes or placing to much weight at the top of a hill. Some types of soil, such as clay or silt, are more prone to landslides than others so you must always learn more about the local geology and use geological mapping to detect slope hazards before building. There are multiple types of landslides (ADD PICTURES OF EACH AND MOVE TEXT ACCORDINGLY) like a slide, parallel movement along weak planes, a creep, slow movement of debris over a long period, a slump, ground falling in on itself in some places and moving downhill, a topple, objects tumbling end over end, a fall, falling objects possibly caused by a stream undercutting a bank or cliff, a flow, a mass moving in a water like fashion downhill, or a torrent, which is a random rapid release of water and other material (BC Geological Survey of the B.C. Ministry of

Most landslides occurred on the forested mountain slopes around the Liquine-Ofqui Fault. The landslides cause any fatalities nor significate economic damage due to being uninhabited. However, one landslide caused destruction and alarm following the blockage of the outflow of Rinihue Lake. The water level of the lake quickly rises, causing floods near other lakes and towns. About 100 km (62 mi) south of the Rinihue Lake, landslides in the mountains around Golgol River cause the river to dam up; when the dam burst it create a flood down the Puyehue Lake. The Golgol landslides destroyed many routes include Route 215-CH which connects to Bariloche in Argentina. On 22nd of May, Cordon Caulle erupted just 38 hours of the Great Chilean Earthquake. While the volcano did erupt, people were too occupied with the serve damage caused by the

In the United States alone, landslides are estimated to cause 25 to 50 deaths and over one billion dollars in damage every year (Landslides 101). Landslides may be caused by natural factors or man-made events. Natural factors include over steepened slopes created through erosion caused by rivers, heavy rains or snowmelt saturation slopes and

A landslide would be tabulated as a disintegrate mass of earth or rock to configurate a mountain, cliff or a summit.

There are two main kinds of plateaus: volcanic plateaus and dissected plateaus. Volcanic plateaus are formed by multiple volcanic eruptions that happen over a period of time. Dissected plateaus are formed because of tectonic plate movement. The movement causes the earth’s crust to move upwards and continue doing so. Some examples of plateaus are the Colorado Plateau found in the state of Colorado and the Tibetan plateau found in central Asia.

Most of the time sinkholes occur in what is known as “Karst Terrain” basically areas of land where soluble bedrock and or limestone can be dissolved by water. The bedrock is exposed and is gradually worn down over time. They often become ponds of water then fills them in. This is created by erosion and drainage of water. Sinkholes have taken the lives of living things such as trees, humans and animals. The earth’s bedrock is layered by overburdened, once the water absorbs the bedrock it leaves one layer of soil. Once the weight

A flood can be defined in many depths but is simply water where it isn’t wanted. In late 2010 Queensland was affected by major flash flooding this continued on into the beginning of 2011 and ¾ of Queensland was declared a disaster zone.

Earthquake Hazards occur when there are adverse effects on human activities. This can include surface faulting, ground shaking and liquefaction. In this essay I will be discussing the factors that affect earthquakes, whether human such as population density, urbanisation and earthquake mitigation or physical such as liquefaction, magnitude, landslides and proximity to the focus.

water fractures within the earth. Causing certain areas of the land to have an earthquake effect

Tiny dots of white against the plant-covered landscape (red in this image) are possible landslides, a common occurrence in mountainous terrain after large earthquakes. The Enriquillo-Plantain Garden fault zone runs along the two linear valleys at the top of the imageThe magnitude 7.0 Mw earthquake occurred inland,

The weather also has a large influence. Often there are winter storm surges producing higher waves, and higher sea levels, meaning higher energy erosion. In addition is increased sub-aerial denudation brought about by the heavy rain and strong winds. This often leads to increased slumping and

     Although it is certain that violent Earth tremors in themselves are destructive, there are often other kinds of Earth movements that are triggered by earthquake shock waves. Thus, the violent shaking that accompanies many earthquakes often causes rockslides, snow avalanches, and landslides. In some areas these events are frequently more devastating than the Earth tremor itself.

Due to diverse geo-climatic conditions prevalent in different parts of the globe, different types of natural disasters like floods, droughts, earthquakes, cyclones, landslides, and volcanoes etc may strike according to the vulnerability of the area.