| Title | Estimation of ice wedge volume in the Big Lake area, Mackenzie Delta, NWT, Canada |
| Author | Bode, J.A.; Moorman, B.J.; Stevens, C.W.; Solomon, S.M. |
| Author Affil | Bode, J.A., University of Calgary, Department of Geography, Calgary, Canada. Other: Natural Resources Canada, Canada |
| Source | International Conference on Permafrost (ICOP) Proceedings, Vol.9, p.131-136, ; Ninth international conference on Permafrost, Fairbanks, AK, June 29-July 3, 2008, edited by D.L. Kane and K.M. Hinkel. Publisher: [publisher varies], [location varies], International |
| Publication Date | 2008 |
| Notes | In English. 24 refs. GeoRef Acc. No: 285538 |
| Index Terms | ecology; geophysical surveys; ice wedges; meltwater; permafrost; radar; soils; surveys; topography; volume; Canada-- Northwest Territories--Mackenzie Delta; Big Lake; Canada; digital terrain models; environmental management; geologic hazards; geophysical methods; ground-penetrating radar; Kendall Island; Kendall Island Bird Sanctuary; land subsidence; Mackenzie Delta; Northwest Territories; periglacial features; radar methods; Taglu Island; Western Canada |
| Abstract | With potential development of the Mackenzie Gas Pipeline in northern Canada. it becomes increasingly necessary to understand all aspects of the permafrost environment affected by this project. A major concern with development is terrain disturbance within the Kendall Island Bird Sanctuary, resulting in an alteration of the subsurface thermal regime. Warming of the subsurface could lead to the melting of excess ground ice causing further subsidence. A combination of Ground Penetrating Radar (GPR) and remote sensing data were used to map the distribution of excess ground ice. The volume of wedge ice was calculated and then combined with a high-resolution digital elevation model to determine the location and amount of potential subsidence that could be induced by melting of subsurface excess ground ice. Although the distribution of excess ice in the Big Lake area is not uniform, its presence is substantial enough that melting may result in significant terrain alteration. |
| URL | http://www.blue-europa.org/nicop_proceedings/1%20Vol%201%20(i-250).pdf |
| Publication Type | conference paper or compendium article |
| Record ID | 62005834 |