Using ground-penetrating radar, topography and classification of vegetation to model the sediment and active layer thickness in a periglacial lake catchment, Western Greenland, link to shapefiles
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| Autores principales: | , , , , , , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
2016
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| _version_ | 1867168166019334144 |
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| author | Petrone, Johannes Sohlenius, Gustav Johansson, Emma Lindborg, Tobias Näslund, Jens-Ove Strömgren, Mårten Brydsten, Lars |
| author_facet | Petrone, Johannes Sohlenius, Gustav Johansson, Emma Lindborg, Tobias Näslund, Jens-Ove Strömgren, Mårten Brydsten, Lars |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The geometries of a catchment constitute the basis for distributed physically based numerical modeling of different geoscientific disciplines. In this paper results from ground-penetrating radar (GPR) measurements, in terms of a 3-D model of total sediment thickness and active layer thickness in a periglacial catchment in western Greenland, are presented. Using the topography, the thickness and distribution of sediments are calculated. Vegetation classification and GPR measurements are used to scale active layer thickness from local measurements to catchment-scale models. Annual maximum active layer thickness varies from 0.3 m in wetlands to 2.0 m in barren areas and areas of exposed bedrock. Maximum sediment thickness is estimated to be 12.3 m in the major valleys of the catchment. A method to correlate surface vegetation with active layer thickness is also presented. By using relatively simple methods, such as probing and vegetation classification, it is possible to upscale local point measurements to catchment-scale models, in areas where the upper subsurface is relatively homogeneous. The resulting spatial model of active layer thickness can be used in combination with the sediment model as a geometrical input to further studies of subsurface mass transport and hydrological flow paths in the periglacial catchment through numerical modeling. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_845258 |
| institution | PANGAEA |
| language | en |
| publishDate | 2016 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Using ground-penetrating radar, topography and classification of vegetation to model the sediment and active layer thickness in a periglacial lake catchment, Western Greenland, link to shapefiles Petrone, Johannes Sohlenius, Gustav Johansson, Emma Lindborg, Tobias Näslund, Jens-Ove Strömgren, Mårten Brydsten, Lars GRASP; GReenland Analogue Surface Project; Kangerl_WGreenl_TBL; MULT; Multiple investigations; Two Boat Lake, Kangerlussuaq, Greenland The geometries of a catchment constitute the basis for distributed physically based numerical modeling of different geoscientific disciplines. In this paper results from ground-penetrating radar (GPR) measurements, in terms of a 3-D model of total sediment thickness and active layer thickness in a periglacial catchment in western Greenland, are presented. Using the topography, the thickness and distribution of sediments are calculated. Vegetation classification and GPR measurements are used to scale active layer thickness from local measurements to catchment-scale models. Annual maximum active layer thickness varies from 0.3 m in wetlands to 2.0 m in barren areas and areas of exposed bedrock. Maximum sediment thickness is estimated to be 12.3 m in the major valleys of the catchment. A method to correlate surface vegetation with active layer thickness is also presented. By using relatively simple methods, such as probing and vegetation classification, it is possible to upscale local point measurements to catchment-scale models, in areas where the upper subsurface is relatively homogeneous. The resulting spatial model of active layer thickness can be used in combination with the sediment model as a geometrical input to further studies of subsurface mass transport and hydrological flow paths in the periglacial catchment through numerical modeling. |
| title | Using ground-penetrating radar, topography and classification of vegetation to model the sediment and active layer thickness in a periglacial lake catchment, Western Greenland, link to shapefiles |
| topic | GRASP; GReenland Analogue Surface Project; Kangerl_WGreenl_TBL; MULT; Multiple investigations; Two Boat Lake, Kangerlussuaq, Greenland |
| url | https://doi.org/10.1594/PANGAEA.845258 |