Traces of the last Ice Age in the Grimstad area
The Grimstad area has marked traces of the last Ice Age both with regard to huge moraine ridges and different types of landscapes. Use images from the SPOT satellite and different chart topics in order to try to provide an overview of traces of the last Ice Age in the Grimstad area. Then go into the field with the GPS in order to explore and register what has been observed in the classroom. |
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| Ice movements and land uplift/changing of the coastline |
| In this short factual section focus will be put on what is of current interest to the topic. The use of the local library and the Internet will be useful in order to obtain more thorough background information. |
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| Bedrock in the Grimstad area |
| The Grimstad area is part of the Bamble district in the South Norwegian basement area. The rock and the geology within this district are to a large extent homogeneous, and the geology of the Grimstad area is therefore representative of the rest of the Bamble district. |
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| Land formations |
| The rocks and their structures have to a large extent left their marks on the landscape. Destruction and erosion follow the zones of weakness in the landscape and have played a major part in the formation of the divided up and undulating landscape. |
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| Preparations in the classroom, simple image treatment (LEOWorks) |
| The activities will be to make a survey of and register traces of the last Ice Age through analysis of a satellite image and chart data. The observations in the classroom will be used in field work. There is focus on glacial and post glacial landscapes, the range of different types of landscape, classification of acreage and soil types. |
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| Working in the field with the GPS |
| Here the activities will be control and observation of area cover based on the interpretation of the satellite image carried out as preparations in the class room. Additionally, there will be focus on the registration of area classes and forms of land. |
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| Follow-up work with imaging (LEOWorks) |
| The activities will be to rediscover registered landforms out in the field through analysis of the satellite image. In addition, to carry out a mapping of vegetation based on registered area classes. This will take place by using the imaging programme LEOWorks. |
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| Follow up work with GIS (ArcExplorer), satellite image and chart theme |
In this activity GIS software is used in order to study and analyse the extensiveness of different soil types that have been recorded out in the field. What do they tell us about the extensiveness of ice, the withdrawal of ice, old coastlines and the changes of the sea level?
What types of vegetation are there on the different soil types? |
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