The heavy rainfall started falling at midday on the 16th August, and it was recorded that 5 inches fell in 8 hours. The storm was a remnant of the Hurricane Alex, which had carried over the Atlantic. The rain was cause due to warm air picking up moisture - due to residual heat from the Atlantic sea - travelled towards the South West Cornish coast as prevailing winds. Upon contact with the topographically vertical coast, these winds experienced a strong up-drafting force thus causing internal moisture to reach the atmosphere, and consequently cool as a string of storm clouds. With convergence and coalescence, enhanced moisture levels resulted in heavy rainfall on the afternoon of 16 August 2004.
A river needs energy to do these things. Waterfalls and rapids are common where the river passes over harder rock. Many California rivers have waterfalls and rapids. Rapids are common on fast-flowing rivers like the Trinity and American rivers. The river flows through a deep, V-Shaped valley.
6.1. Flood Prone Areas The areas, which are prone to flood-risks are : • places, which have a history of flooding (most important) • areas receiving heavy rainfall, with not much naturally sloping landscape • areas at the lower levels of naturally sloping landscape – where, the higher areas are receiving heavy rainfall • areas around sea-coasts, or, river banks • areas downstream of dams etc. As water level upstream of dams might rise, the dam authorities might be forced to release water (to safeguard the dam) – which might cause flooding of downstream
The downside to the central highlands though are multiple thunderstorms that cause incredible damage due to lighting strikes. The capital, Antananarivo, receives almost all its average annual 1.4 meters of rainfall between the months of November and April. The dry season is nice and sunny but can be cooler in the morning time. Frost is common at the highest elevations in Madagascar and provides some of the clearest blue skies to view in the world. The west coast is much drier than the central highlands and east coast due to the winds losing humidity by the time they reach this side of island.
They strengthen when water evaporated from the ocean is released as the saturated air rises, resulting in condensation of water vapor contained in the moist air. There are several similarities between hurricanes and tornadoes. First of all, both are unpredictable, incredibly devastating and can easily kill. Other than that, both are made up of very strong and fast wind which is more than 100 mph. Furthermore, both of them rotate all around.
Since sea level measurements were first recorded in 1870, global averages have risen almost eight inches. The annual rate of rise has been 0.13 inches over the past 20 years, which is close to twice the average from the previous 80 years. According to the Intergovernmental Panel on Climate Change (IPCC), sea levels are rising by 7mm a year, which is more than twice the global average.1 Scientists predict that sea level will continue rising for the foreseeable future. 2 Two major mechanisms are causing sea level to rise. First, the melting of ice caps and glaciers is releasing water into the oceans.
Travel Issue Paper Acqua Alta – High Waters in Venice There are many issues around the world that are affecting tourism. However, there is currently the issue of “Acqua Alta”, Italian for “High Water” affecting Venice, Italy and its surrounding areas. “Acqua Alta”, according to Trip Advisor, is the name given to water levels that are higher than usual and essentially invade the city of Venice, flooding most (if not all) streets and walkways. Durant Imboden, in his article High Tides and Flooding in Venice, states that this phenomenon is most likely to occur during late September to mid October. The cause of the flooding is attributed to high tide, low atmospheric pressure, and wind patterns.
The water behind the reservoir has destabilized some of the steep hills on the edges of the water causing landslides that can be very dangerous. (notes) Socially the TGD has done a lot of good for China like controlling floods and coming in
THE THAMES BARRIER On 31 January 1953 Britain and the Netherlands suffered one of the worst floods in their history. Huge waves battered the east coast, and a devastating tidal surge rushed up the Thames, with sea levels 3 metres above normal in some places. The flood destroyed London and covered 160,000 acres on Canvey Island and killed (drowned) 300 people in Essex. As a result of this, The Thames Barrier was built in order to protect the capital from flooding until the year 2030; however people suspect that global warming may predict the time and effectiveness of the barrier. The Thames Barrier is a unique construction and is the world’s largest movable flood barrier, spanning 520 metres across the Thames at Woolwich.
They are born from tropic waters that affect quite a few across the world but in the Gulf of Mexico they tend to wreak particular havoc. These storms have potential for mass devastation through storm surges that flood the coastline often taking lives and possible contamination of water supplies, heavy rain which contributes to flooding situations and high winds coupling with tornadoes that destroy property, Storm surges are among one of the worst factors of a hurricane. Often, at the time, people do not even realize the impacts a storm surge can have and do not head authorities warnings to evacuate the coastline, which can result in a high death toll. As Jay Barnes notes in his research: As a hurricane churns across the open sea, the combined effects of the storm’s lowered barometric pressure and strong, inward-spiraling winds create a deep, swirling column of water beneath the ocean’s surface. This effect causes the sea level to rise in the vicinity of the storm, creating a dome of water that may be a few feet high in the center and a hundred miles wide.