WATER MOVEMENT IN FREEZING PEAT: LABORATORY INVESTIGATIONS
Ranjeet M. Nagare, Ph.D
2 17-Apr-12
BACKGROUND
3 17-Apr-12
FIELD STUDY SITE
4 17-Apr-12
THE PROBLEM?
5 17-Apr-12
THE PROBLEM
6 17-Apr-12
TYPICAL WETLAND COMPONENTS
7 17-Apr-12
ROLE OF PEATLANDS
8 17-Apr-12
HYDROLOGICAL MODELS
Wang et al. (2011)
9 17-Apr-12
HYDROLOGICAL MODELS
Wang et al. (2011)
10 17-Apr-12
NORTHERN INFRASTRUCTURE
Source: www.wikipedia.com
11 17-Apr-12
NORTHERN INFRASTRUCTURE
Source: www.arcticgaspipeline.com
12 17-Apr-12
PERMAFROST TOPOGRAPHY
peat plateau underlain by permafrost
13 17-Apr-12
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
14 17-Apr-12
15 17-Apr-12
LABORATORY FACILITY
LABORATORY STUDIES
Establishing 1D profiles is challenging
Freezing-thaw studies add more complexities
Radial temperature distribution is not desirable
16 17-Apr-12
FIELD SAMPLING
17 17-Apr-12
SENSORS
18 17-Apr-12
29 TDR probes for soil moisture measurements,
equal number of temperature probes and
sampling ports and 2 heat flux plates
INSULATION
19 17-Apr-12
EXPERIMENTAL SETUP
20 17-Apr-12
INITIAL MOISTURE CONDITIONS
21 17-Apr-12
FINAL WATER CONTENTS
22 17-Apr-12
RESULTS: WATER MOVEMENT
23 17-Apr-12
DISCUSSION: WATER MOVEMENT
24 17-Apr-12
SIGNIFICANCE
Water Balance Studies
Frost Table Topography
Northern Infrastructure
Climate Change
25 17-Apr-12
RESEARCH PARTNERS
Dr. Rob Schincariol
Dr. William L. Quinton
Dr. Masaki Hayashi
26 17-Apr-12
ACKNOWLEDGEMENTS
27 17-Apr-12
QUESTIONS?
28 17-Apr-12