WATER MOVEMENT IN FREEZING PEAT: LABORATORY INVESTIGATIONS · laboratory investigations ranjeet m....
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WATER MOVEMENT IN FREEZING PEAT: LABORATORY INVESTIGATIONS Ranjeet M. Nagare, Ph.D
Transcript of WATER MOVEMENT IN FREEZING PEAT: LABORATORY INVESTIGATIONS · laboratory investigations ranjeet m....
WATER MOVEMENT IN FREEZING PEAT: LABORATORY INVESTIGATIONS
Ranjeet M. Nagare, Ph.D
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BACKGROUND
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FIELD STUDY SITE
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THE PROBLEM?
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THE PROBLEM
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TYPICAL WETLAND COMPONENTS
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ROLE OF PEATLANDS
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HYDROLOGICAL MODELS
Wang et al. (2011)
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HYDROLOGICAL MODELS
Wang et al. (2011)
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NORTHERN INFRASTRUCTURE
Source: www.wikipedia.com
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NORTHERN INFRASTRUCTURE
Source: www.arcticgaspipeline.com
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PERMAFROST TOPOGRAPHY
peat plateau underlain by permafrost
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CLIMATE CHANGE
BACKGROUND
Close coupling of heat and water movement in
soils
Critical to link field studies with laboratory
studies (Scotty Creek - 12 years of data)
Complexities of field conditions limit
understanding of impact of individual parameters
Fundamental work in controlled laboratory
settings
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LABORATORY FACILITY
LABORATORY STUDIES
Establishing 1D profiles is challenging
Freezing-thaw studies add more complexities
Radial temperature distribution is not desirable
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FIELD SAMPLING
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SENSORS
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29 TDR probes for soil moisture measurements,
equal number of temperature probes and
sampling ports and 2 heat flux plates
INSULATION
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EXPERIMENTAL SETUP
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INITIAL MOISTURE CONDITIONS
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FINAL WATER CONTENTS
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RESULTS: WATER MOVEMENT
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DISCUSSION: WATER MOVEMENT
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SIGNIFICANCE
Water Balance Studies
Frost Table Topography
Northern Infrastructure
Climate Change
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RESEARCH PARTNERS
Dr. Rob Schincariol
Dr. William L. Quinton
Dr. Masaki Hayashi
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ACKNOWLEDGEMENTS
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QUESTIONS?
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