| Autor: |
Mats Engdahl, Alireza Malehmir, Emil Lundberg, Mehrdad Bastani, Chunling Shan |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
SEG Technical Program Expanded Abstracts 2013. |
| Popis: |
Summary We have collected 3D tensor Controlled Source- and Radio Magnetotelluric data at a quick-clay site in southwestern Sweden with the aim to image the geological structures that have given rise to retrogressive landslides in the area. The 3D resistivity models show layering within the glacial and post-glacial sediments including marine clay, quick-clay and coarser grain sands. Because of the smoothing regularization used in the inversion, the lateral and depth extents of the quick-clays cannot be determined just by using the resistivity model. The depth to the top of the resistive crystalline bedrock is to some extent uncertain. However, the geometry of the sediments and bedrock seen in the 3D resistivity model correlates reasonably well with the results from the high resolution reflection seismic data collected along the same lines in the site. The results show that the bedrock deepens towards the river in the northern part of the site. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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