Sök:

Sökresultat:

44 Uppsatser om Topography - Sida 1 av 3

Topografins inverkan på markvattenhalten i ett jordbruksdominerat avrinningsområde

Topography is an important parameter for catchment hydrology, since it is a driver for water flow. Moreover, Topography serves as a basis for hydrological models, e.g. ?Top-model?, which is based on a topographical wetness index (TWI). Few studies of TWI have been conducted on agricultural catchment scale. Four fields were studied in a Swedish drained agricultural catchment in order to evaluate the influence of Topography on soil wetness.

Bildrendering med intermodulerat Atomkraftmikroskop

Intermodulated force microscope (ImAFM) is a type of dynamic AFM. ImAFM opens up possibilities for mapping the Topography and making quantitative determinations of material parameters at the same time. With increased information the need to generate more informative images of the sample emerges. In this Bachelor's degree project I have created tools for rendering images of a sample. The Topography is plotted as the height and a material parameter is color coded on Topography.

Avgränsning av tillrinningsområden till grundvattenmagasin : vilken information ger berggrundens överyta?

Delineation of recharge areas for aquifers is performed in the groundwater mapping process at the Swedish geological survey, SGU. This work is time consuming and performed manually. It is therefore desirable to develop a more general and repeatable method for defining recharge areas for aquifers.The purpose of this study was to investigate two other possible methods to delineate recharge areas for aquifers. The first method was to examine the possibility of using the Topography of the bedrock to define the recharge areas for aquifers. To enable this, a method for generating the Topography of the bedrock was developed.

Computer Modelling of the Influence of Surface Topography on Water Repellency and a Study on Hydrophobic Paper Surfaces with Partly Controlled Roughness

A computer model based on minimization of the free energy, capable to predict contact angles and spreading transitions between Wenzel and Cassie mode for drops placed on surfaces with different Topography were implemented in matlab. Simulations were compared with experiments documented in the literature. These showed that reported transitions between Cassie and Wenzel mode can be explained by minimization of the free energy. In this report, a study on the possibility of constructing water repellent paper surfaces with a combination of treatment with octadecyltrichlorosilane and Topography changes, is included..

Utveckling av differentierade transportersättningar för rundvirskestransporter med lastbil

Approximately 60 million cubic meters of round wood are transported every year with trucks in Sweden and stand for 15 % of all truck transportation in the country. The big amount that is transported results in many haulage companies works in different parts of the country with different conditions to get a good flow on their transports. Today the transport pricing is very general and the payment consists of the unit round wood they are transporting and the distance of the transport. The purpose of this study were, from the freighter and the haulage company?s perspective, try to find ways to change the today applied transport pricing to more differentiated and compare them to historic payment of transportation.

Naturvärden i Killingeskogen : Biologisk mångfald och friluftsliv

Killingen is an area situated on an island called Resarö in the municipality of Vaxholm. The areais covered with forests with a varied Topography and a mosaic of environments. The municipalitywants to keep the area unexploited, for recreational purposes but what are the natural values inthe forests? The survey concluded that a mosaic of nature types had high values and could behosts for vulnerable species.As part of the study, measures that will improve the quality of the paths and bathing areas for thelocal population was proposed as well as means to heighten or preserve the natural values in thearea..

Järnåldersboplatser och historiska byar : En studie av agrara bebyggelsemönster i mälarbygder under 1500 år

Following paper deals with the questions about prehistorian and medieval settlements in the Mälar Valley and their relations to the historically known hamlets or single farmsteads from the 17th- and 18th-century cadastral maps. Models over settlement development through the period A.D 200 to 1700 done by geographers Ulf Sporrong and Dan Carlsson are tested and compared to the knowledge won by recent archaeological excavations. Is there a connection between the older settlements linked together by dry-stone walls and the late Iron Age settlements? Does the picture differ from the one presented for the Gotland region? How well are the general theories about different settlement development depending on basic natural conditions as for the potentials for cultivation and Topography, corresponding to the physical remains?  Are there other factors involved when the settlement structure takes its form?The methods that are used here constitutes mainly of a comparison between different locations in the Mälar Valley that has got a well known prehistory thanks to extensive archaeological excavations. Cadastral maps, soilmaps, Topography maps and maps over ancient monuments are intertwined to the same map and analyzed through works in Geographical information systems.The results of this study reveal an interesting suspicion in the continuity-question through the Iron Age.

Från strandhugg till säsongsboplatser : En studie av människornas utnyttjande av Gladö på Södertörn under äldsta stenålder

This paper deals with the early mesolithic sites in Gladö, a part of Hanveden situated south of Stockholm. It tries to explain the big amount of sites, why people came to these islands and what they were doing there. The large shore displacement together with the Topography of the mesolithic islands resulted in a rapid change of suitible areas for camping. The prime occupation was sealhunting on the ice of the Ancylus lake in early spring. As the archipelago became larger other activities as fishing and birdhunting got more important and people stayed for longer periods..

Toppturer norr om Torneträsk

The demand of nature tourism is increasing and new ways to satisfy tourists are necessary.The goal with this report was to answer that demand by exploring the possibilities for backcountry skiing north of Torneträsk. This area was chosen because it is unexplored. This hasbeen succeeded by an extensive fieldwork. Aspects like Topography, routes, slope angles andgeological places of interests where recorded. The results has shown that back country skiingis well suited for this area and poses no negative impact on the natural habitat.

Gestaltning av vägar i Skåne - kopplat till sju regionalt viktiga stråk :

This work derives from the question ?What is a beautiful road??. The question is being discussed in interviews with two employees at the Swedish National Road Administration and two former members of the ?Council of environment and beauty? at the Swedish National Road Administration. The interviews are summarized in my own discussion about the concept of ?Beautiful roads?.

Ekskolan

"Ekskolan" is a monumental school placed in the middle of the new town area "Mariehäll" in Stockholm, Sweden. 600 pupils between preeschool until year 5 will use the school and its big schoolyard between the townsquare and the public park.The school will be built in massiv wood, both for human reasons with a environment of good, healthy and suitable material for the people and the school activity.The school is seperated in 3 volymes that organises different years; house B and C, and the common facilities: house A. The scool has a cultural profile with rooms for creative activites, documentation and exhibition.To mark the border to the public places that surround the scool and to meet the inclined Topography, the schoolhouses will stand on a terrace. The terrace creates rooms between the houses that can be used to utdoor teaching. Likewise, the terrace creates a opened sightline between the public rooms and all the way down to the river..

Medeltidsstadens början

In this paper I have tried to find out the reason the medieval town of Vä was created. I have studied several different areas in witch all, in one way or another, have had an effect on the making of Vä. This areas includes Topography, iron production, mill handling, religious effects, royal affliction and also if the name Vä could tell something about Väs history as a religious cult. I have also looked at two other places not far from Vä, the medieval harbour town Åhus and the big village of Fjälkinge. By comparing these three places I tried to find out what Vä had that the other places did not, which made Vä turn in to a town.

Metoder att förhindra nedisning av vindkraftverksblad

ABSTRACTMany wind turbines have problems with icing and there is still no effective method to de-ice without stoppage of production and power loss. Here I therefore consider other methods than those available today, and particularly, I consider how these methods could be applied to wind turbines of the company Oxel. A surface where the water droplets do not attach might be the basis for a useful method. If no water attaches, no ice could form. To accomplish this a hydrophobic surface is nessesary, for example wax.

Deglaciationen av ett område på västra Grönland : Deglaciationen av ett område på västra Grönland

The aim of this report is to describe the deglaciation in an area on west Greenland in the vicinity of Kangerlussuaq. To do this, the geomorphological landforms were mapped by studying areal photographs and by a two week field study where key areas were examiend. The landforms were transferred to a map using ArcGis and each key area were interpreted.The majority of the geomorphological formations were formed during the last deglaciation and consists of morain ridges, kettle Topography in both till and glacifluvium, glacifluvial deltas, two fossil sandurs, and lateral terraces. Based on key areas and an inversion model a geomorphological map was created to illustrate the deglaciation, using the least complex explanation of the genesis of the landforms. The results show that the ice played a major role by damming lakes which enabled formation of many meltwater chanels and delta formations on higher elevations.

Den medeltida stadshamnen : Om strandområdets topografi och funktion i tre Öresundsstäder

This essay focuses on the function and development of city harbors during the middle ages in the Scanian part of Öresund. The purpose of the survey is to take a closer look at Topography, development and activities on the shores in three coastal cities along the west coast of Scania. The cities that has been part of the survey are: Skanör ? Falsterbo, Malmoe and Landskrona, three cities that follows each other chronologically and that show both similarities and differences in appearance, function and urbanization.The cities of Skanör ? Falsterbo and Malmoe were important market places for the medieval Scania market with the herring fishery in focus. The cities? birth has to be looked upon in relation to these activities.

1 Nästa sida ->