Sökresultat:
31 Uppsatser om Glacier outburst floods - Sida 1 av 3
Förutsättningar för jökellopp vid Fox Glacier, Nya Zeeland
A great number of tourists visits each day the Fox Glacier in New Zealand and are subjected todangers such as jökulhlaups. This phenomena can occur suddenly and in a destructive way when abuilt up of water suddenly bursts and releases large amounts of water. This is well known to happen atthe near by Franz Josef Glacier which has similar settings to Fox Glacier, but sparse previous researchon the subject indicates different results of whether jökulhlaups are present or not by Fox Glacier. Thisthesis therefore aims to study the conditions for jökulhlaups at the glacier. This is done by remotesensing and field observations of the sandur in the Fox Glacier Valley, qualitative interviews andliterature studies with a comparison with Franz Josef Glacier.
Höjdförändringar på Lomonosovfonna, Svalbard, 1996-2012
The climate changes and the global warming have a great impact on the Arctic environments. This partially depends on that the albedo is getting lower when snow and ice is melting and exposes more and more dark surfaces of the land and sea. This leads to a feedback effect; the melting accelerates because dark surfaces attract more sun radiation. Because of the heating the glaciers in Arctic retreat. The purpose of this report is to obtain an eventual change in elevation on the glacier Lomonosovfonna that is located on Svalbard by comparing elevation data collected by NASA and GPS data from 1996-2012.
Försämrad korrelation mellan storleken av Kebnekaises sydtoppsglaciär och andra klimatindikatorer
Intergovernmental Panel on Climate Change (IPCC) recognizes glaciers as the best land-indicator of climate change. A variety of studies have concluded, using both modeling and field studies, that above all climate parameters precipitation, particularly winter precipitation, and summer temperature controls the change in glacier mass balance. With global warming almost all glaciers on Earth are losing mass. In this study, the summit-glacier constituting Kebnekaise's south summit (called the Southern-summit henceforth), Sweden's highest point, is studied to see how it is affected by winter precipitation and summer temperature during the period 1968?2013.
Simulering av översvämningar i Byälven
Severe floods caused by heavy autumn rains in year 2000 raised the question whether measures to reduce the damage from high water levels, in the area surrounding lake Glafsfjorden and along the river Byälven down to lake Vänern, are possible. One option is to reduce flow resistance along the river and thereby lower the maximum water level a given inflow would cause. Good knowledge of hydraulic and hydrological conditions is necessary in order to estimate the effect of such flow-reducing measures. In order to quantify such effect a 1-dimensional hydraulic flow model has been set up for the river Byälven using the software package MIKE 11. The model is more detailed, especially concerning topography and bathymetry, than earlier models used for studies of the river.
Översvämningsrisker längs Funboån
Flooding events are no longer rare, floods occur all over the world. Accordingly, it is vital for the society and different authorities to work with flood mapping. To meet the goal of Uppsala kommun to map the risks of floods in Uppsala län, a map of the different areas around Funboån which are inside the area of risk for flooding have been developed.In the work, cross sections and the water flow have been measured. Moreover, an echo-sounding have been carried out in Funboån to map the bottom topography. From the bottom map and laser scanned data covering the study area, a terrain model was created.
Öppen dagvattenhantering i urbana miljöer :
Storm water causes a number of problems in our country, particularly in city environment with its surfaces of non-absorbing ground materials. At heavy rain falls there are floods due to lack of capacity in the drain system when meeting heavy water masses over a short time. When the drain system is overloaded huge water masses reach the recipient untreated and there causing disturbances in the aquatic ecosystem. Due to emissions from mainly traffic, industries and other human activities the storm water is polluted. Earlier the problem used to be solved technically, by increasing the capacity of the tubes and by construction of reservoirs to delay the floods peaks.
Klimatsäkrare städer : klimatförändringar, stadsplanering och översvämningar
The numbers of natural disasters caused by extreme weather are increasing through out the world. A large majority of the research concerning the climate shows that this is a trend that can be expected to continue. At the same time the urbanisation is increasing more than ever and for the first time in history more than fifty percent of the population lives in a city. How we build these cities will have a crucial importance for our adaption to the new climate. In Sweden, our capacity for an adaption are high because of our economic situation as well as our rather well built society.
Från Rio via Kyoto, till Marrakech. Hur har rättviseproblematiken tolkats i anpassningsdiskussionerna?
Global climate change is one of the greatest challenges in our history. As the average temperature is rising due to anthropogenic emissions, impacts such as floods, droughts and hurricanes, affect the lives of millions of people. Though the least developed countries are least responsible for emissions, they are the worst affected. This thesis focuses on environmental justice in the adaptation discourse. By outlining the adaptation discourse from the United Framework Convention on Climate Change principles, to the Marrakesh Accords, via the Kyotoprotocol my ambition is to analyse how environmental justice has been interpreted in relation to the adaptation discourse.
Bergerosion i utskovskanaler
Today?s climate changes will probably give rise to precipitation in Sweden, which will cause more floods in Swedish rivers. Many of the Swedish rivers are regulated and have lots of hydro-electro power plants. Higher floods in the rivers will give greater water loads on the dams, which mean that a higher discharge through the sluice gates and in the spillway channels is needed. High discharge of water in a spillway channel can create scour of the material in the channel.
RA Detect - Antikollisionsskydd förlantbrukssektorn
SecRePac is a household appliance that simplifies sorting of packaging such as milk, juice and yogurt containers. By shredding the packages SecRePac reduces its volume uptake both in the home and at the recycling station. This leads to minimization of both transports to the recycling stations and truck transport for emptying the containers at the recycling station.The greenhouse effect deteriorates and becomes worse and worse leading to extreme climate changes and natural disasters such as floods as an example. Carbon dioxide emissions are the major reason for this and at least 30 percent of all these emissions come directly from transports. In the EU carbon emissions has decreased in the past few years.
SecRePac - Strimlare för hushållsförpackningar
SecRePac is a household appliance that simplifies sorting of packaging such as milk, juice and yogurt containers. By shredding the packages SecRePac reduces its volume uptake both in the home and at the recycling station. This leads to minimization of both transports to the recycling stations and truck transport for emptying the containers at the recycling station.The greenhouse effect deteriorates and becomes worse and worse leading to extreme climate changes and natural disasters such as floods as an example. Carbon dioxide emissions are the major reason for this and at least 30 percent of all these emissions come directly from transports. In the EU carbon emissions has decreased in the past few years.
Vart bör Kiribati, Tuvalu och Marshallöarnas befolkningar ta vägen? : En normativ analys inom ämnet för klimatförändringarnas utmaningar
The effects of anthropogenic climate change are becoming more and more visible as being highlighted by scientists, politicians and media. The causes of droughts, floods, melting ice caps and rising sea levels can all partially be traced back to human activities. In this study, I examine where the future climate refugees of Kiribati, Tuvalu and the Marshall Islands should go when inhabitants of these low lying island nations are forced to leave their disappearing territories due to sea level rise. By using a normative method of analysis i egentlig mening, arguments deriving from certain values will be presented to confront the problem. These values originate from Edward A.
"Det är så samverkan ska fungera" : En fallstudie av hur lokala aktörer agerar när en krissituation uppstår
AbstractThe purpose of this essay is to investigate how a local authority acts when anunexpected event occur. It´s done with a basis in two crisis communicationstheories; Coombs SCCT theory and Gilpin and Murphys complexity theory,which largely are each other?s opposites. To conduct the study, a case studyof the floods that hit Kristinehamn in the summer of 2014 was carried out,which gave us a good opportunity the achieve the aim of the study. Themethod used was qualitative research interviews.
Med en vilja av järn och nävar av stål : Hertig Karls väg till makten sett ur ett machiavellistiskt fursteperspektiv
In 1513 the Florentine humanists Niccolò Machiavelli composed one of the most famous, but also ambiguously interpret, work in the history of politics, Il Principe. Machiavelli´s book The Prince revealed the true nature of politics in Italy in the beginning of the sixteenth century and gives very straightforward advice on how to act to become a successful and powerful political being. Machiavelli´s creation and insights in the reality of politics have be much discredited and condemned in its lack of moral consideration and violent nature. Still it has been read under the centuries with a fascination and eager to understand the structure of power and how to master it. My purpose with this study is to apply this Machiavellian idea of the capable prince on to the earlier research of the Swedish duke Karl, later on King Karl IX.
Konsumtionens klimatpåverkan : En jämförande studie mellan två socioekonomiskt skilda bostadsområden, Araby och Söder i Växjö
The world is in a stage of climate crisis where the average temperature is rising, with consequences such as, melting ice sheets, increasing sea levels, and floods. The climate panel of the UN, IPCC, has stated that this is a reaction of anthropogenic emissions of greenhouse gases. The most important gas is carbon dioxide, which contributes with 80 per cent to the on going climate crisis.The increasing emissions of carbon dioxide are connected to human consumption patterns. This puts pressure on the earth, as humans demand more and more resources. Today the earth needs one and a half year to regenerate the resources humans? demand of it, by the year 2030 we will need two planets in order to cope with this increasing demand of resources.At a global level it is established that richer countries have a stronger consumption pattern than poorer, and thus generate higher levels of carbon dioxide emissions.