Permafrost Temperature Analysis and Projection from Samoylov Island in the Lena River Delta, Siberia
Climate and its variability have a significant influence on the thermal regime of Permafrost soils. Therefore, it is important to understand the small scale processes and dynamics of heat transport in frozen ground. By means of measurement data from a study site at Samoylov Island in the Lena River...
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ftawi:oai:epic.awi.de:26145 2023-05-15T17:07:37+02:00 Permafrost Temperature Analysis and Projection from Samoylov Island in the Lena River Delta, Siberia Ludin, Anne Rebekka 2010 https://epic.awi.de/id/eprint/26145/ https://hdl.handle.net/10013/epic.39074 unknown Ludin, A. R. (2010) Permafrost Temperature Analysis and Projection from Samoylov Island in the Lena River Delta, Siberia , Diplom thesis, Institute of Environmental Physics, Heidelberg University. hdl:10013/epic.39074 EPIC3101 p. Thesis notRev 2010 ftawi 2021-12-24T15:35:39Z Climate and its variability have a significant influence on the thermal regime of Permafrost soils. Therefore, it is important to understand the small scale processes and dynamics of heat transport in frozen ground. By means of measurement data from a study site at Samoylov Island in the Lena River Delta in Northern Siberia climate as well as the thermal and hydrological state of the soil is analyzed for a time series of two years from 2003-2005. The study site is characterized as a wet polygonal tundra, showing distinctive permafrost structures that influence the measurement results. Furthermore, a temperature projection model is applied to the data set, fitting the simulated soil temperature values to the measurements. As the model is based on the transfer function method using the equation of pure conductive heat flow, the main estimation parameter characterizes the effective thermal diffusivity of the soil. For winter periods deviations between model and measurement do not exceed ±0.3 ◦C and the thermal diffusivity is in the expected order of magnitude. In addition, these deviations are interpreted qualitatively with regard to non-conductive processes and the heterogeneity of the soil, giving essential information about the complexity of the thermal soil system. Thesis lena river permafrost Tundra Siberia Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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description |
Climate and its variability have a significant influence on the thermal regime of Permafrost soils. Therefore, it is important to understand the small scale processes and dynamics of heat transport in frozen ground. By means of measurement data from a study site at Samoylov Island in the Lena River Delta in Northern Siberia climate as well as the thermal and hydrological state of the soil is analyzed for a time series of two years from 2003-2005. The study site is characterized as a wet polygonal tundra, showing distinctive permafrost structures that influence the measurement results. Furthermore, a temperature projection model is applied to the data set, fitting the simulated soil temperature values to the measurements. As the model is based on the transfer function method using the equation of pure conductive heat flow, the main estimation parameter characterizes the effective thermal diffusivity of the soil. For winter periods deviations between model and measurement do not exceed ±0.3 ◦C and the thermal diffusivity is in the expected order of magnitude. In addition, these deviations are interpreted qualitatively with regard to non-conductive processes and the heterogeneity of the soil, giving essential information about the complexity of the thermal soil system. |
format |
Thesis |
author |
Ludin, Anne Rebekka |
spellingShingle |
Ludin, Anne Rebekka Permafrost Temperature Analysis and Projection from Samoylov Island in the Lena River Delta, Siberia |
author_facet |
Ludin, Anne Rebekka |
author_sort |
Ludin, Anne Rebekka |
title |
Permafrost Temperature Analysis and Projection from Samoylov Island in the Lena River Delta, Siberia |
title_short |
Permafrost Temperature Analysis and Projection from Samoylov Island in the Lena River Delta, Siberia |
title_full |
Permafrost Temperature Analysis and Projection from Samoylov Island in the Lena River Delta, Siberia |
title_fullStr |
Permafrost Temperature Analysis and Projection from Samoylov Island in the Lena River Delta, Siberia |
title_full_unstemmed |
Permafrost Temperature Analysis and Projection from Samoylov Island in the Lena River Delta, Siberia |
title_sort |
permafrost temperature analysis and projection from samoylov island in the lena river delta, siberia |
publishDate |
2010 |
url |
https://epic.awi.de/id/eprint/26145/ https://hdl.handle.net/10013/epic.39074 |
genre |
lena river permafrost Tundra Siberia |
genre_facet |
lena river permafrost Tundra Siberia |
op_source |
EPIC3101 p. |
op_relation |
Ludin, A. R. (2010) Permafrost Temperature Analysis and Projection from Samoylov Island in the Lena River Delta, Siberia , Diplom thesis, Institute of Environmental Physics, Heidelberg University. hdl:10013/epic.39074 |
_version_ |
1766063094998499328 |