Amatrice Earthquake Case Study. Human actions such as urbanisation and deforestation increase flood risk. 2. What is a flood in geography? Haiti Earthquake. These include: 1. This means they advise on and bring together the planning and management of these risks. Development of many urban areas along the river, reduced infiltration and increased the risk of damage done to buildings. Causes of flooding <ul><li>Key idea: </li></ul><ul><li>Rivers flood due to a number of physical and human causes. Urbanisation results in an increase in Flooding can have a negative effect on wildlife, causing drowning, disease proliferation, and habitat destruction. main purpose = record how a river responds to precipitation. Causes The physical causes of flooding are: 1.Prolonged precipitation which saturates the soil until the water table (the level of saturated ground in the soil) reaches the ground surface. Human or Physical? Explain the meteorological causes of flooding. Floods can occur for a variety of reasons, and their effects can be minimized in several different ways. Emily_Lakin5 PLUS. Put most simply, a flood is an overflow of water in one place. Human. Excessive levels of precipitation occurring over a prolonged period of time. During flooding of the Mississippi River in 1973 and 1993 water levels rose to higher levels than expected from the statistical data, because modification of the stream had made the data invalid. Christchurch Earthquake. The level of understanding about floods and their management can be as diverse as the groups within the communities and thus can present a variety of perspectives. Humans cause and exacerbate flooding due to urban development, destruction of natural wetlands and deforestation. The impacts of human activities on the hydrological cycle were examined in 2C. GCSE Geography - Case Study - Flooding, The Somerset Levels 2014. answer choices. 177 terms. Prolonged rainfall: one of the most common causes of floods. Urbanisation results in an increase in 36 What are the EFFECTS of a deadly flood | A Level Geography (2021) 37 how does #flooding #affect #humans and the environment. Well, firstly we need to understand what a 'physical factor' is. Even in an average year 18% of the landmass is inundated and previous floods have affected 75% of the country (as in 1988). Coastal flooding, also called estuarine flooding, happens when a large storm or tsunami causes the sea to rush inland. There are many factors which can cause a flood - often the natural landscape can influence flooding and also human interactions can increase the risk. Human actions such as urbanisation and deforestation increase flood risk. Human causes of flooding Task: Using the information cards: Write notes on the causes of flooding . pptx, 1.58 MB. 9 terms. The land surrounding a river is called a flood plain. Floods usually occur when precipitation falls more quickly than that water can be absorbed into the ground or carried away by rivers or streams. When the water level is higher than the river bank or the dams, the water comes out from the river, there will . Coastal flooding, also called estuarine flooding, happens when a large storm or tsunami causes the sea to rush inland. Human causes of flooding In pairs discuss how humans cause flooding Ubanisation Deforestation Floodplain drainage Flooding mis- management 10. 2. Physical Cause. Sea level rise is discussed in more detail here. the estimated cost of the floods to government is. The _____ of a mineral can be calculated by dividing the mass of the mineral by its volume. In 2012, hundreds of animals, including many vulnerable one-horned rhino ( Rhinoceros unicornis ), were killed in floods that swamped Kaziranga National Park in the Indian state of Assam. Evaluate the effectiveness of coastal-management strategies along a stretch of coast. Water Drought What Creates a Defecit. deforestation, due to tree loss the branches on the trees cant catch water from hitting the soil. Below is a list of causes that led to flooding in Bangladesh, with a short explanation underneath for additional depth and detail. Below are the links to the topic pages: Plate tectonics A flood occurs whenever water in excess of the expected amount comes into an area. a. Urbanisation; . Channelisation of the river in places like St Louis exaggerated problems further downstream. Resource summary. Causes of flooding; The impact of flooding; Flooding Case studies; Flood Management; Population Change. Geography - Cumbrian flood of 2009 Case Study. Floods can be caused by a breaking or failure of infrastructure that can cause large quantities of water to flood a local area. Prolonged rainfall saturates the ground and the soil cannot store any more water which leads to increased surface runoff. Meteorological causes of flooding include intense storms, causing flash flooding, heavy and prolonged rainfall, a series of depressions (low pressure systems) and extreme monsoonal rainfall and snowmelt. Deltas are landforms formed at the mouth of a river, where the river meets a body of water with a lower velocity than the river (e.g. Links to wider reading and an introductory video. These are heavily focused on the United Kingdom, a HIC that has seen an increase in severe flood events in recent years partly due to urban sprawl, a reported affordable housing shortage in the South East and subsequent issues with building on flood plains. A2 Geography at Toot Hill School. Natural Causes of Floods: High rainfall. Levee systems, instead of natural wetlands, cause more devastating floods during peak floods along river basins such as the Ohio, Mississippi . with 80% of the country under water, the immediate economic impact was extensive and wide-reaching. Unintentionally, 1m 3 s -1 is equivalent to 1 cumec, so the discharge of a river is . Spring Snow-melt-Soil erosion, therefore a rapid increase in river discharge 3. . GCSE Geography - Human causes of climate change. Rainfall also will enter the river faster compared to when the ground isn't saturated and this means higher discharge levels and floods. Catherine looks at physical and human interventions in the carbon and water cycles for your A Level Geography exam. Human causes of the flood. Floods are the second-most widespread natural disaster on Earth, after wildfire s. All 50 of the United States are vulnerable to flooding. Steep relief. Floods can be described according to speed (flash flood), geography or cause of flooding. A combination of factors led to the storm surge that was responsible for flooding. a lake or sea), resulting in the reduction in the river's capacity to transport sediment. The discharge of a river (or stream) is the volume of water that streams past a point in the river's course every second. Particularly affected areas include; southern Europe, parts of USA (e.g. The volume is estimated in cubic meters (m 3 ), and it is every second, so the units of discharge are cubic meters a second or m 3 s -1. Human causes of flooding Building Constructing buildings and surrounding roads and paths creates impermeable surfaces which increase surface run-off. This can lead to floods in other regions. Prolonged rainfall saturates the ground and the soil cannot store any more water which leads to increased surface runoff. In this episode, she will look at different ways to deal with the impacts of climate change using techniques such as geo-engineering and land-use zoning. 4 "Flooding and erosion is set to increase to unprecedented levels along coastlines. Preview 3 out of 4 pages. What are the Human Causes of Flood Risk in the Bay of Bengal? Monsoon climate- Heavy rain and snow 2. You . Rising Sea Levels. Levee systems, instead of natural wetlands, cause more devastating floods during peak floods along river basins such as the Ohio, Mississippi . If it rains for a long time, the ground will become saturated and the soil will no longer be able to store water leading to increased surface runoff. An example of a flooding event often used at AS level is that of the Boscastle 2004 flood. soil depth, vegetation, slope, rock type, drainage density what are the meteorological causes of flooding intense storms=flash flooding, monsoonal rainfall, unusually heavy/prolonged rainfall, snowmelt, melting glaciers/glacial outbursts (jokullhaups) what are monsoons? : Impermeable areas of tarmac Wells sunk to supply settlements Sprinkling of groundwater onto arable crops Before a storm the river's main source of water is groundwater. These create excellent support resources for your teaching of the new AQA Geography A level and will save you many hours in preparation time. The Environment Agency (EA) has a strategic overview of all sources of flooding and coastal erosion (rivers, the sea, groundwater, reservoirs and surface water). A flood is when a river bursts its banks on to normally dry land. GA members should enter their membership number for their username (if this does not work you can try using your email address instead). L'Aquila Earthquake. These include: 1. The likelihood and severity of storm surges also rises since weaker winds will also be able to increase the sea level enough to flood coastal areas. Simon Ross, GA consultant and Head of Geography at Queen's College, Taunton, identifies some of the causes and impacts of the floods and asks questions about the future flood management of the area. The depth at which soil pore spaces or fractures and voids in rock become . If you do not know your membership number, please call the GA . Natural causes. Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in the fractures of rock formations.About 30 percent of all readily available freshwater in the world is groundwater. There is a range of human factors that affect the shape of a storm hydrograph. Risks facing the Delta. L11- To know the human causes of flooding and to understand the socio-economic effects of flooding 9. Shekinah_46. Meteorological causes of flooding include intense storms, causing flash flooding, heavy and prolonged rainfall, a series of depressions (low pressure systems) and extreme monsoonal rainfall and snowmelt. 75% of the country is below 10m above sea level and 80% is classified as floodplain as Bangladesh is principally the delta region of South Asia's great rivers. 51 terms. It only focuses on discharge during a storm event. Following a period of extreme input . On Thursday 5th December 2013 large areas of the east coast of England were affected by coastal flooding on a scale not seen since the Great floods of 1953. </li></ul><ul><li>Flooding appears to be an increasingly frequent event </li></ul>Hydrograph data to plot Thinking through Geog 2. Drainage systems that have been created by humans lead to a short lag time and high peak discharge as water cannot evaporate or infiltrate into the soil. 2.Intensive precipitation over a short period of time. then when . Rising sea levels and the possibility of more frequent and intense storms can all lead to an increased food risk. (Less than 5m above Sea Level) High Storm surge Frequency Funnel Shaped Coastline increases storm surge height Isostatic Readjustment = SInking Unconsolidated river Delta Sediment. 400 factories closed. Evidence for Climate change. Heavy rainfall raises the water level. Introduction to the location of the Delta. man made cause would be global warming, deforestation, urbanization all cause flooding. 1. This second, A-Level question, requires you to evaluate. AS - "Explain the physical and human causes of one flood in a developing country (8 marks) A-Level - "Evaluate the influence of a country's level of development in determining the impacts of coastal flooding" (16 marks)7. Drainage basins; How and why do river valleys change downstream; Long and cross profiles of a river; Landforms of fluvial erosion and deposition; Landforms of fluvial erosion and deposition; Landforms of deposition - lower course; How and why does the water in a river fluctuate? Bangladesh is prone to serious and chronic flooding. One example is when water mains break such as the one that occurred in July of 2014 on the UCLA campus in the United States that caused water to gush out into the surrounding area at 75,000 gallons per minute. 5 terms. Complex weather patterns can increase rainfall, which leads to flooding. Prolonged rainfall: one of the most common causes of floods. Floods Can Harm Wildlife. Let us begin by defining what a flood actually is. The 1973 flood caused damage and rose to levels that might be expected from a 200-year flood, even though discharge was only at a level predicted for . Unformatted text preview: sam Evaluate the influence of a country's level of development in determining the impacts of coastal flooding (16 marks) A variety of factors affect the severity of the impacts of coastal flooding.These include a countries development and its financial power, its size and location, and level of investment in infrastructure projects. 3. 700,000 hectares of crops destroyed. Physical and human causes of flooding - two case . Deforestation Vegetation, including trees, intercept rainfall, slowing its movement. Added is an essay comparing the causes of flooding in an LEDC ( Bangladesh) to an MEDC. Basin size, shape and relief. California), Edexcel A-Level Geography - Globalisation. A Level Physical Geography - Boscastle Floods Natural Causes of Flooding __Meteorological __causes of flooding, including: intense storms leading to flash flooding, unusually heavy or prolonged rainfall, extreme monsoonal rainfall snowmelt. Meteorological (or physical) causes of flooding Meteorological causes of floods are physical, but they are to do with the weather. Like many other countries in the world, floods in Bangladesh are caused by a great number of factors. Human causes comparison. Insurers calculated £100million. Why do rivers flood . Urban development causes water runoff into streams during heavy rain, and this runoff causes higher flood peaks and more frequent floods. Physical Geography. • The flash floods in Ormoc, Leyte in 1991 is an example. A quick succession of prolonged Atlantic storms, with persistent rainfall and gale-force winds, was the major cause of flooding. The land surrounding a river is called a flood plain. An example is Lysefjord in Norway. Physical. Humans cause changes in LAND USE which can impact upon river flooding. As sea levels rise due to climate change or isostatic rebound low lying coastal areas are permanently flooded by the sea. Human Geography. People tend to perceive flood risk and . Background: There are eight key controls that affect drainage basins and ultimately the shape of the resultant flood hydrograph: 1. Causes of flooding Prolonged rainfall - if it. Y12 - coastal flooding and levels of development. A case study of the coastal recession at the Nile Delta for Edexcel A Level Geography. Some causes of flooding in bangladesh. Types of precipitation. Explanation. Temperature. Economic impacts of the flood. Even in an average year 18% of the landmass is inundated and previous floods have affected 75% of the country (as in 1988). <p>Storm Surge due to a hurricane</p>. Deltas are dynamic areas that change quickly due to the erosion of unstable land during storm and flood events and the . £200 million. Drainage systems that have been created by humans lead to a short lag time and high peak discharge as water cannot evaporate or infiltrate into the soil. Land use. Essays included: 0 3 . . A ria is a flooded river valley formed when rising sea levels flood the valley, often creating an estuary A fjord is an example of a flooded glaciated valley formed when the glacier erodes vertically, creating a u-shaped valley. Flash flooding will be possible primarily in . superpowers. 2. There is a range of human factors that affect the shape of a storm hydrograph. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. Evaluate the influence of a country's level of development in determining the impacts of coastal flooding. These essays would also support the teaching of other A level Geography specifications. But what physical factors cause the water level to become so high that it causes flooding? 80% of Bangladesh lies on a huge floodplain and delta most of which is only 1m above sea level. Y12 - coastal flooding and levels of development. Landforms of fluvial erosion and deposition - potholes , rapids , waterfalls, gorges , meanders , braiding , levees , floodplains and deltas. AS - "Explain the physical and human causes of one flood in a developing country (8 marks) A-Level - "Evaluate the influence of a country's level of development in determining the impacts of coastal flooding" (16 marks)7. . in response to the floods the government have. Urbanisation. flood defences. Trees and vehicles blocked the river channel, particularly under a bridge in the centre of Boscastle, see Figure 6, which led to the river bursting its banks and further flooding in nearby properties. This included a high spring tide, an area of low pressure and high northerly winds. Additionally, high tides in the Bristol Channel and its narrowing create tidal surges. Coastal landforms of deposition occur where the accumulation of sand and shingle is greater than it is removed. The rivers could not cope with the significant amount of rainfall that fell. This eventually leads to saturation of the soil. I would love to enlighten you today on what the causes and effects of floods are. EARTH SCIENCE. E.g. Process and impact of rejuvenation - knick points, waterfalls, river terraces and incised meanders. invested £270million in new and updating existing. Drains also increase the flow of water into surrounding rivers, increasing the flood risk. Many of the levees along the river were poorly built, and were breached easily, especially away from . Causes of flooding Key idea: Rivers flood due to a number of physical and human causes. Causes of flooding A flood occurs when a river bursts its banks and the water spills onto the floodplain. Identify the cause of flood shown in the photograph. A-Level Additional AQA aqa oxford biology CCEA Chemistry CIE citizenship combined science double science Edexcel edexcel international . Urbanisation can cause flooding because many of the surfaces in towns and cities are Impermeable. what are the physical causes of flooding? . What are the Environmental Causes of Flood Risk in the Bay of Bengal? Storm Hydrographs. Lombok Indonesia Earthquake 2018. These causes can be categorized into 2 main groups: Human Causes and Natural Causes. Verified answer. Report an issue. Recurrent floods have become a major problem in the transboundary Lower Mono River catchment of Togo and Benin, causing more damage and loss of life than any other disaster in the area. Registered users should enter their registered user number for their username (if this does not work you can try using your email address instead). The meteorological causes of flooding are: intense storms, which lead to flash flooding ( short lag time ), as in semi-arid areas but more common in mountainous areas prolonged, heavy rain, such as during the Asian monsoon and with the passage of deep depressions across the UK Changing urban environments. Decrease in water pollution near REE mines, c. Increase in habitat destruction as a result of mining, d. Increase in air pollution near mines and processing plants. 6. There are many human and physical causes of flooding: Risk. 1. Urban development causes water runoff into streams during heavy rain, and this runoff causes higher flood peaks and more frequent floods. Water on the land. 38 Causes and Effects of Climate Change | National Geographic; How Does Flooding Affect The Environment? Cause of the Flood. Submergent coastlines cause the formation of rias, fjords and Dalmatian coasts. These same activities, all related to changing land use within river catchments, frequently increase the flood risk, none more so than urbanisation . Impact of flooding on the environment. (20) (Oxford textbook) 3. A detailed case study of the Flooding in Bangladesh 2007 with physical and human causes as well as social, environmental and economic impacts upon the country. Humans cause and exacerbate flooding due to urban development, destruction of natural wetlands and deforestation. Nepal Earthquake 2015. Floods are the second-most widespread natural disaster on Earth, after wildfire s. All 50 of the United States are vulnerable to flooding. Added is an essay comparing the causes of flooding in an LEDC ( Bangladesh) to an MEDC. Bangladesh is prone to serious and chronic flooding. Concrete is impermeable so precipitation falls to the ground and stays there as surface run off.
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