Hurricanes need the ocean’s water temperature to be about 80 degrees to a depth of about 150 feet. Another factor of the forming of hurricanes is the rapid cooling of the warm water vapors that were evaporated, which causes condensation (the second step of the water cycle). The third step of the water cycle is precipitation and that happens when too many water vapors are condensed and rain starts to fall. Humidity is also needed in the
The velocity is slowest in the upper course because energy is lost because of friction. In the lower course the velocity is quicker because of the shape of the channel becomes deeper and wider and the channel roughness decreases, therefore there is less
Explain the cause of sea level change and the formation of resultant coastal landforms. (15) There are a number of factors that contribute to long and short-term variations in sea level. Short term variations generally occur on a daily basis and include waves, tides, or specific flood events, such as those associated with a winter snow melt, or hurricanes or other coastal storms. Long term variations in sea level occur over various time scales, from monthly to several years, and may be repeatable cycles, gradual trends, or intermittent anomalies. These long term variations in sea level can be caused by major glacial episodes, changes in the hydrological cycle, vertical land motion or even changes in the ocean and coastal circulation.
This essay will firstly discuss the extent to which the impacts of storms in the UK, such as ‘The Great Storm’ of October 1987 in Southern England and the recent St Jude’s storm in October 2013, are the result of physical and human influences, and then evaluate the effectiveness the responses to these storms. On one hand, it must be argued that physical factors are key in determining the magnitude of impacts from UK storm events. Factors such as the depth of a depression, the intensity of the pressure gradient and the resulting strength of winds as well as a storm’s path are key in determining the magnitude and nature of the effects of storms, particularly the economic impacts. The Great Storm in 1987, for example, which developed as a severe depression in the Bay of Biscay (964 millibars) and moved northeast, was the worst recorded climatic event in the UK. The hurricane strength winds which gusted up to speeds of 10 knots in the south-east England caused more than 15 million tress to fall down, blocking roads and railways and leaving widespread structural damage to more than 15 million buildings.
It seems as if when the apocalypse happens, the epicenter will be in Haiti. The location and weather patterns of the island have plagued the island with natural disasters. Haiti has had many recorded hurricanes, earthquakes, and storms. The country has a disproportionately large coastline which makes it very susceptible to hurricanes. Haiti also has large rivers that overflow in the rainy seasons and dry up during the dry season.
Discuss the impacts of storm events in the British Isles and evaluate responses the responses to them. (40 Marks) Storm events in the British Isles are caused by depressions which form out in the Atlantic Ocean and are brought to us mainly by the tropical maritime air mass moving north-east over the British Isles. A depression is a low pressure weather system formed where two different air masses meet along the polar front, this occurs rapidly as they are driven by prevailing westerly wind. They appear as masses of swirling clouds when viewed on satellite images, subsequently due to Coriolis effect resulting in an anticlockwise rotation in the northern hemisphere. The associated air masses of storms within the British Isles are Polar maritime and Tropical maritime.
There are countless causes to why there has been an upsurge in flood frequency. The reasons for the rise in flooding that can be numerically measured will differ between these particular variables (and several others too): flash flooding, winter flooding, human and physical causes, with also the occasional climate change. Flash flooding is widely counted as a cause for increased flood frequency. This appears when there is an increased discharge in the given area due to a high input of precipitation so that the surface/ground that it lands upon or the drainage systems it enters cannot manage, or drain away the added discharge quickly enough. The way to distinguish between a flash food and an ordinary flood is the period of time the flood happens over (below six hours and it’s classed as a flash flood) Flash flooding is caused by several influential factors.
They require sea-surface temperatures of at least 26°C and the influence of the earth’s rotation to initiate a spinning circulation (Coriolis effect). Hurricanes are generally known by three different names. Hurricanes are categorised on a scale from 1-5, 1 being the weakest and 5 being the strongest. This categorisation is bad upon the wind speed of the hurricane. The environmental effects that a hurricane can have on an area can be catastrophic.
Potential for emergency exist which may result in loss of power and the high winds associated with this disaster. FLOODS: Floods are the most probable natural cause of emergencies or disasters at Ashford University. Spring thaws and ice breakups may cause some lowland flooding. Summer or fall storms are more likely to be responsible for major flooding. STRONG STORMS: Winter storms with snow, ice and freezing temperatures in various combinations, are fairly commonplace at Ashford University.
One of the main problems of groundwater abstraction is in coastal areas, namely salt-water intrusion. This is the movement of salt water into an aquifer that previously held fresh water. Salt-water intrusion is sever along the Mediterranean, Black Sea and Baltic coasts. Tundra landscapes hold vast quantities of the worlds freshwater as permafrost. Changes in temperate and the melting of permafrost can have significant impacts on the availabity of water.