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New geomorphological mapping system used at different scales in a Swedish glaciated area
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
2009 (English)In: Geomorphology, ISSN 0169-555X, Vol. 110, no 1-2, 37-44 p.Article in journal (Refereed) Published
Abstract [en]

A new, detailed geomorphological mapping system is tested at different scales for presentation of landscape configuration and interpretation of landscape development of a formerly glaciated area near Mora in central Sweden. The geomorphological maps are based on fieldwork supported by aerial photographs. The area contains landforms created by mass movement, glacial, glaciofluvial, fluvial, lacustrine, aeolian and anthropogenic processes. In addition, geomorphological effects of isostatic uplift, which has caused a c. 220 m rise of the former Ancylus lake shoreline in the area since the deglaciation, can be seen. The new system is tested at scales 1:5000, 1:25,000 and 1:50,000 using the same legend. At the largest scale information on morphography/morphometry, lithology, and hydrography are included in the map as are details on polygenetic origins of landforms. With each step from the 1:5000 to the 1:50,000 scale some generalisation is needed at the cost of descriptive detail. In turn, with smaller scale, the general overview of the area increases and the impression from the map gradually becomes more dominated by genesis. The emphasis of the map thus changes from a presentation with a high level of descriptive information at the largest scale to a more interpretative overview at smaller scales. The scale transformation shows that the geomorphological presentation of the landscape is a function of both the landscape hierarchy and the geomorphological context within an area. The use of the new geomorphological mapping system at the three scales shows that the tested mapping legend can be used without modification from one scale to another. This is mainly because the geomorphological information parameters are separated in the legend, and that explanatory information is gained from combinations of them. The possibility to apply the same legend at different scales for an area facilitates the choice of an appropriate mapping scale for specific purposes and applications. The new mapping system also has the advantage that the data can be easily transformed into a GIS ESRI geodatabase containing the same "raw-data" as the original map. The differences of information at the different scales illustrate problems that are also relevant for use and presentation of geomorphological data in a GIS and three examples of scale problems in relation to GIS data handling are outlined.

Place, publisher, year, edition, pages
2009. Vol. 110, no 1-2, 37-44 p.
Keyword [en]
Geomorphological mapping, Landscape analysis, Scale, Sweden
National Category
Earth and Related Environmental Sciences
URN: urn:nbn:se:uu:diva-95076DOI: 10.1016/j.geomorph.2008.12.022ISI: 000269342000006OAI: oai:DiVA.org:uu-95076DiVA: diva2:169147
Available from: 2006-11-02 Created: 2006-11-02 Last updated: 2011-03-10Bibliographically approved
In thesis
1. Development of a Detailed Geomorphological Mapping System and GIS Geodatabase in Sweden
Open this publication in new window or tab >>Development of a Detailed Geomorphological Mapping System and GIS Geodatabase in Sweden
2006 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis presents a method for detailed landscape presentation. The method incorporates both fieldwork-based comprehensive geomorphological description and digital data handling and thus contributes in filling the gap between traditional geomorphological mapping and modern geomorphological studies performed in Geographic Information Systems (GIS).

The main part of the thesis relates to development of a new detailed geomorphological mapping system, constructed to be easy to use and yet present a large amount of geomorphological information. The legend of the mapping system has successfully been applied to various types of landscapes, mapped at various scales between 1:5,000 and 1:50,000 without any modifications needed. The information presented in the map is based on simple descriptive criteria and thus the subjectivity is kept low, which enables a broad field of usage. In parallel with the mapping system a GIS-based geomorphological database has been developed. The structure and data presentation of the new mapping system allows for easy transformation of the data to form part of this database. The selected format of the GIS database is the ESRI ArcGIS®, Personal geodatabase.

In the development of the geomorphological mapping system four field areas have been mapped in central (Bonäs, Risa and Liden) and northern Sweden (Tarfala). In addition the new legend has been adapted to a field area situated in Vorarlberg, Austria (Upper Gamperdona valley).

In relation to the Tarfala field area an added issue of the project has been to give insights in the effects of physical and chemical weathering on various rock types to see if this can be detected in materials and landforms. The results from this study point at that resistance towards weathering vary among rocks even though they are of same rock type.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2006. 36 p.
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 236
Physical geography and sedimentology, Geomorphology, Geomorphological map, GIS, Sweden, Naturgeografi och sedimentologi
urn:nbn:se:uu:diva-7222 (URN)91-554-6705-9 (ISBN)
Public defence
2006-12-01, Hambergsalen, Institutionen för Geovetenskaper, Villavägen 16, Uppsala, 10:00
Available from: 2006-11-02 Created: 2006-11-02Bibliographically approved

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