ALBERT

Note: Abstract Résumé Acknowledgments Welcome to Yellowknife Part I: The landscape and the people Geological evolution of the landscape Bedrock geology Surficial geology Climate and vegetation History of Yellowknife From gold to government Significant events Part II: Living with frozen ground Permafrost Regional distribution Permafrost occurrence in Yellowknife Significance of peat Significance of moisture Ice lenses Thaw stable and thaw unstable ground Thaw settlement Frost heave Development Buildings Roads Utilities Thermosyphons Climate change - an uncertain future for permafrost Climate and permafrost history Air temperature trends over the last century Response of air temperatures to doubling of greenhouse gases Effect of climate warming on permafrost in Yellowknife Impacts of climate warming Part III: Guide to field stops Introduction The Capital Tour - Capital Site to Bowling Green building Stop 1. The Capital Site - a profusion of peat Stop 2. Legislative Assembly - design with nature Stop 3. Legislative Assembly roadway - perils of paving peat Stop 4. Walking path - tipping trails Stop 5. Legislative Assembly parking lot - preserving permafrost Stop 6. Frame Lake - Yellowknife's aquatic centrepiece Stop 7. National Defence building - seeking solid ground Stop 8. Visitors Centre - rocking and rolling Stop 9. 49 Street thermosyphons - keeping it cool Stop 10. Bowling Green building - swallowing sidewalks The City Tour - 49 Avenue to Niven Lake Stop 11. 49 and 49 intersection - rolling roadways Stop 12. 49 Avenue - sagging sidewalks Stop 13. Downtown Yellowknife - safe on sand Stop 14. Gold Range Hotel - making things work Stop 15. Centre Square Mall - stemming shifting sands Stop 16. Boston Pizza - fast food on a slab Stop 17. Royal Oak Mines Inc. houses - half a century later Stop 18. 52 Avenue - up, up, and ... away Stop 19. 49 Street hill - leaving good ground Stop 20. 54 Avenue - frozen dangers underfoot Stop 21. Rockcliffe Apartments - creeping crawl space Stop 22. School Draw subdivision - houses on the move Stop 23. School Draw Park - from basements to basketballs Stop 24. Rock outcrop - on the shores of glacial Lake McConnell Stop 25. Detah ice road - crystal highway Stop 26. Old Town - doing things the old-fashioned way Stop 27. Franklin Avenue - whither frozen ground? Stop 28. Fritz Theil Park - from dump to diamond I Stop 29. Old sewage line - pipes and peat Stop 30. Niven Lake - a subarctic oasis I Part IV: The Niven Lake Trail Introduction Stop 1. A biological magnet for waterbirds Stop 2. The land of little sticks Stop 3. The wonder of wetlands Stop 4. Niven Lake -urban oasis for wildlife Stop 5. Peat, beautiful peat Stop 6. Honolulu north? Stop 7. Home sweet home -all year round Stop 8. Those mud-slinging, bug-poking shorebirds Glossary of terms Selected references List of field guides for Yellowknife

Note: CONTENTS: Flight plan 1999. - LC130 schedule. - NGRIP 1999 schedule. - Overview of 1999 schedule. - lnfo for August1998 meeting. - Quartering and buildings. - Number of field participants. - NGRIP 1999 sub programs. - SITREP. - Term of reference for the NGRIP field work. - Accidents and illness. - Mail to NGRIP participants. - Cargo shipments to Greenland. - Personnel transport 1999. - Booze and drugs. - Vacation in Greenland. - Shipping boxes. - Welcome to the NGRIP camp. - List of participants. - NG RIP camp load. - Kangerlussuaq and the surrounding area. - Thule Air Base, Greenland, Base Operations. - Uplift 1998. - Typical specifications for LC-130 and Twin Otter. - Useful data. - Coordination of C-130 in Kangerlussuaq. - Aviation weather reports. - Typical communication plan and frequencies used. - Phonetic alphabet. - Personal field equipment. - Operation of Thrane & Thrane STDC telex terminal. - Operation of NERA lnmarsat M terminal. - Map of NGRIP camp. - NGRIP inclined pit and trenches. - Map of NGRIP Region. - Map of Greenland and North Greenland. - Map of skiway. - Ice divide North of NGRIP. - Map of the magnetic declination in Greenland. - Glycol specification. - Density vs temperature of hole liquid. - Positions in Greenland, distances and directions. - List of NGRIP addresses.

Note: N.F. entfällt ab 57.2000. - Volltext auch als Teil einer Datenbank verfügbar , Ersch. ab 2000 in engl. Sprache mit dt. Hauptsacht.

Note: Table of Contents Foreword The Global Context The Arctic in a Global Context The ARCSS Program The Arctic System Science (ARCSS) Program The Scientific Goals of the ARCSS Program ARCSS Objectives Significant Research and Findings of the ARCSS Program ARCSS Program Research Implementation of ARCSS Program Research ARCSS Program Components Paleoenvironmental Studies Greenland Ice Sheet Project Two (GISP2) Paleoclimates of Arctic Lakes and Estuaries (PALE) Ocean-Atmosphere-Ice Interactions (OAII) Land-Atmosphere-Ice Interactions (LAII) Integrative Studies Synthesis, Integration, and Modeling Studies (SIMS) New Initiatives Human Dimensions of the Arctic System (HARC) Russian-American Initiative on Shelf-Land Environments in the Arctic (RAISE) International Collaboration The Future of the ARCSS Program Priorities for the Future Research Questions Integrative Strategies Community Coordination and Integration Coordination and Integration Logistics Support Working with Arctic Residents Community Planning and Science Management ARCSS Committee Science Steering Committees Periodic Meetings of ARCSS Principal Investigators Appendices ARCSS Program Contact Information A History of ARCSS Program Development ARCSS Data Protocol References and Relevant Reports Contributors and Reviewers

Note: Text in span. und eng.

Note: Contents: Introduction / P. J. le B. Williams. - The management and behaviour of the Mesocosms / P. J. le B. Williams and J. K. Egge. - Evolution of phytoplankton pigments in Mesocosm experiments / R. G. Barlow, R. F. C. Mantoura, D. G. Cummings, D. W. Pond and R. P. Harris. - Ribulose-1,5-bisphosphate Carboxylase/oxygenase (RubisCO) gene expression and photosynthetic activity in nutrient-enriched Mesocosm experiments / M. Wyman, J. T. Davies, K. Weston, D. W. Crawford and D. A. Purdie. - Bacterial response to blooms dominated by diatoms and Emiliania huxleyi in nutrient-enriched Mesocosms / R. Sanders and D. A. Purdie. - Population dynamics of phytoplankton and viruses in a phosphate-limited Mesocosm and their effect on DMSP and DMS production / W. H. Wilson, S. Turner and N. H. Mann. - Microplanktonic polyunsaturated fatty acid markers: a Mesocosm trial / D. W. Pond, M. V. Bell, R. P. Harris and J. R. Sargent.

Note: Contents Summary Introduction Material and Methods 2.1 Experimental Approach and Concept 2.2 Cold Chamber Experiments 2.2.1 Packed Sand Columns 2.2.2 Undisturbed Soil Monolith 2.3 Tracer Extraction and Determination of Tracer Concentrations 2.4 Digital Image Analysis 2.4.1 Photographic Recording 2.4.2 Image Analysis 2.4.3 Statistical Regression Analysis 2.5 Fluorescence Imaging 2.6 Low-Temperature SEM and X-Ray Analysis 2.7 Numerical Simulation 2.7.1 Model Description 2.7.2 Model Application 3 Results From Cold Chamber Experiments 3.1 Packed Sand Columns (Experiment I-III) 3.1.1 Infiltration Behaviour (Experiment I-III) 3.1.2 Dye Tracer Distribution (Experiment III) 3.1.3 Mass Recovery of Dye Tracers (Experiment III) 3.1.4 Vertical Distribution of Dye Tracers Determined From Large Sections (Experiment III) 3.2 Undisturbed Soil Monolith (Experiment IV) 3.2.1 Infiltration Behaviour 3.2.2 Dye Tracer Distributions 3.2.3 Mass Recovery of all Tracers Determined From Large Sections 3.2.4 Vertical Distribution of all Tracers Determined From Large Sections 4 Results From Low-Temperature SEM and X-Ray Analysis 4.1 Dry Sand and Loam 4.2 Wet Sand 4.3 Wet Loam 5 Modelling Results 5.1 Thermal Regime 5.2 Water Content Profile Before the Irrigation 5.3 Infiltration Behaviour 5.4 Water Content Profile After the Irrigation 5.5 Solute Transport 5.6 Energy Exchange at the Surface 6 Conclusions 6.1 Conclusions About the Methods 6.2 Conclusions About the Water Infiltration in Frozen Soil List of Figures List of Tables Bibliography

Note: Contents Editor's note Acknowledgements page xu Notes on translations and definitions Abstract Preface Introduction 1 Geocryology as part of planetary cryology 2 Frozen rocks as natural-historical geological formations 3 History of research of the zone of permafrost and the frozen materials composing this zone 4 Structure, problems and scientific themes of geocryology 5 Methodological basis of geocryology I Thermal-physical, physico-chemical and mechanical processes in freezing, frozen and thawing ground and their manifestation in the permafrost regions 1 Thermal-physical processes in freezing and thawing ground 1.1 Heat transfer and temperature field in ground 1.2 Freezing (crystallization) of water and melting of ice in the ground 1.3 Sublimation and desublimation of moisture in frozen rocks 1.4 Freezing and thawing of ground 1.5 Methods for solving soil freezing (thawing) problems and approximate formulae for freezing and thawing depth calculations 2 Water transfer and ice formation in soils 2.1 Nature and mechanism of moisture migration in soils 2.2 Water transfer and ice formation in frozen soil 2.3 Water transfer and ice formation in freezing and thawing soils 3 Physico-chemical and mechanical processes in freezing and thawing ground 3.1 Chemical reactions and processes in freezing and thawing soils 3.2 Physico-chemical and mechanical processes in freezing and thawing soils 3.3 Physical-mechanical processes in frozen soils caused by changes in temperature 3.4 Physical and chemical processes in frozen soils caused by an external load 4 Structure and texture of freezing and thawing soils 4.1 Thermal-physical and physical-mechanical conditions of development of migrational-segregated ice interlayers 4.2 Basic types of cryogenic structure 4.3 Formation of structure in freezing and thawing soils 4.4 Structural associations and types of contact in frozen soils 5 Cryogenic geological processes and phenomena 5.1 Classification of processes and phenomena 5.2 Frost heaving of soils 5.3 Frost cracking (fissuring) and polygonal formations, surface and underground 5.4 Thermokarst 5.5 Slope processes and phenomena 5.6 Processes and effects associated with the activity of water, glaciers and other geological agents II Composition, cryogenic structure and properties of frozen rocks 6 Formation of sedimentary materials in the permafrost regions (cryolithogenesis) 6.1 Sediment genesis in the permafrost regions 6.2 Transformation of loose deposits of the permafrost regions into rock 6.3 Formation of useful mineral deposits at different stages of cryogenesis 7 Composition and structure of frozen earth materials 7.1 Characteristics of organic, mineral and chemical composition of frozen earth materials 7.2 Unfrozen water and ice in ground 7.3 Textural characteristics of the frozen material 7.4 Microstructure of frozen soils 8 Properties of frozen soils 8.1 Physical properties of the frozen materials 8.2 Thermal-physical properties of rocks 8.3 Moisture exchange properties of soils 8.4 Mechanical properties of frozen ground 9 Characteristics of the basic genetic types of frozen ground 9.1 Features of the cryogenic types of frozen strata 9.2 Composition and cryogenic structure of the principal geologic-genetic types of sedimentary materials in the permafrost regions 9.3 Natural ice as a monomineral rock III Principles of the formation and development of the frozen strata and layers of seasonal freezing and thawing 10 Thermodynamic and climatic conditions for formation of the frozen layers 10.1 Energy balance of the Earth 10.2 Thermodynamic conditions for development of seasonally and perennially frozen ground 10.3 Frozen ground as a result of zonation of thermal- and mass-exchange processes on the Earth's surface and in the atmosphere 11 Seasonal freezing and thawing of ground 11.1 Formation of the layer of seasonal freezing and thawing of soil 11.2 Types of seasonal freezing and thawing of the ground 11.3 The influence oflandscape-climatic factors on the temperature regime and depth of seasonal freezing and thawing of the ground 12 Development of the temperature regime and the thickness of the permafrost 12.1 Present-day knowledge of the development of permafrost 12.2 The effect of boundary conditions on the permafrost thickness and temperature regime 12.3 Dependence of the permafrost thickness and temperature regime on geological factors and processes 13 Taliks and groundwater in the permafrost zone 13.1 The types and formation of taliks in the permafrost zone 13.2 Groundwater of the permafrost regions 13.3 Interaction of groundwater with the permafrost and types of cryohydrogeological structures IV Regional features and evolution of permafrost 14 Permafrost evolution in the Earth's history 14.1 History of the development of permafrost and its distribution on the planet 14.2 Reasons for the development and evolution of permafrost in the Earth's history 14.3 The history of geocryological development and the main stages of permafrost formation on the territory of the former USSR in the Late Cenozoic 15 Zonal and regional features of present-day geocryological conditions in the territories of the former USSR 15.1 Distribution of permafrost and spatial variations of its mean annual temperature 15.2 Structure of the permafrost and spatial variability of its thickness 15.3 Distribution of main types of seasonal ground thawing and freezing 16 Principles and methods for regional geocryological investigations 16.1 Geocryological survey as the basis for regional investigation of the seasonally and perennially freezing zones 16.2 The methods and carrying-out of geocryological surveys 16.3 Classification and regionalization in the course of geocryological survey 16.4 Regionalization in geocryological mapping V Rational use of frozen ground and environmental protection in the course of economic development of the permafrost regions 17 The effect of different types of development on the natural geocryological environment 17.1 The basic principles of rational use of frozen ground in the course of the economic development of the permafrost regions 17.2 Regional environmental change in the course of development of extensive areas within the permafrost zone 17.3 Economic development of the permafrost regions with various kinds of construction 17.4 Development in the permafrost regions for the mining industry and underground engineering 17.5 Types of agrobiological development in the permafrost regions 18 Ensuring the stability of engineering structures in the permafrost regions 18.1 Principles of construction on permafrost (bases and foundations) 18.2 Methods of amelioration of frozen ground for foundations 18.3 Principles of foundation design and selection of type of foundation for construction on permafrost 18.4 Normative documents for engineering design and construction in the permafrost regions 19 Engineering geology in support of design, construction and operation of structures in the permafrost regions 19.1 Engineering-geological survey in the permafrost regions 19.2 Forecasting change in the geocryological conditions in the course of development 19.3 Principles and methods of the control of cryogenic processes 19.4 The basis of the rational use and protection of the geological environment in the permafrost regions References Index

Note: Contents Contributors Abbreviations and symbols Introduction Section 1. Isotope sources, analysis and interpretation of organic composition 1. High-precision deuterium and BC measurement by continuous flow-lRMS: organic and position-specific isotope analysis / J. T Brenna, H.J. Tobias and T.N. Corso Introduction CF-IRMS analysis of HD/H2 Carbon isotopes: automated position-specific isotope analysis (PSIA) References 2. Carbon isotope effects on key reactions in plant metabolism and 13C-patterns in natural compounds / H.-L. Schmidt and G. Gleixner Introduction Influence of carboxylations on the initial 13C distribution pattern Influence of aldol reactions and decarboxylations on secondary distribution patterns Ester and aldol reactions during secondary metabolism Effect of other lyase reactions Reactions involving C1-metabolism Isotope effects on reactions introducing hydrogen, oxygen and nitrogen in biological compounds Conclusion References 3. Interpretation of oxygen isotope composition of leaf material/ G.D. Farquhar, M.M. Barbour and B.K. Henry Why are we interested in the oxygen isotope ratio of organic matter? Oxygen isotopes in plant organic matter: a historical perspective On the enrichment of 18O in water within the plant Variation within the leaf 30 Isotopic exchange of oxygen during metabolism Isotopic history of oxygen in organic molecules The potential for oxygen isotopes in evaluating plant water use Oxygen isotope composition of organic matter: methodology and analysis References Appendix 1 Appendix 2 4. lntramolecular deuterium distributions and plant growth conditions / J. Schleucher Introduction Methodology Variation of intramolecular D distributions Discussion and outlook References Section 2. Soils, nutrients and plants 5. Stable isotope studies of soil nitrogen / D.W. Hopkins, R.E. Wheatley and D. Robinson Introduction Transformations of soil nitrogen Distribution of soil nitrogen Spatial variability of soil N Use of 15N natural abundance to investigate soil processes Conclusions References 6. 15N at natural abundance levels in terrestrial vascular plants: a précis / L.L. Handley, C.M. Scrimgeour and J.A. Raven Introduction What are the patterns in the δ15N signal? Experimental systems Needs for research References 7. Variations in fractionation of carbon and nitrogen isotopes in higher plants : N metabolism and partitioning in phloem and xylem / T. Yoneyama, H. Fujiwara and J.M. Wilson Introduction Acquisition of nitrogen Metabolism of nitrogen Translocation of nitrogen C and N concentration and isotope composition in castor bean (Ricinus communis) Conclusions and future directions References Section 3. Photosynthesis, plants and water 8. Carbon isotope discrimination in terrestrial plants: carboxylations and decarboxylations / J.S. Gillon, A.M. Borland, K.G. Harwood, A. Roberts, M.S.J. Broadmeadow and H. Griffiths Introduction Net carbon isotope discrimination Photosynthetic discrimination Respiratory discrimination Refixation of respiratory CO2 Discrimination under natural conditions Conclusions References 9. Carbon isotope discrimination in structural and non-structural carbohydrates in relation to productivity and adaptation to unfavourable conditions / E. Brugnoli, A. Scartazza, M. Lauteri, M.C. Monteverdi and C. Máguas 133 Introduction Theoretical background to carbon isotope discrimination WUE and plant productivity 1 Carbon isotope discrimination in soluble carbohydrates and productivity Soluble carbohydrate Δ13C and CO2 mesophyll conductance Concluding remarks References 10. Oxygen-18 of leaf water: a crossroad for plant-associated isotopic signals / D. Yakir Introduction Evaporative enrichment Source water Atmospheric moisture and boundary layers Bulk leaf water 2-D simulation of 18O in leaf water 18O of water in chloroplasts Conclusions References 11. The role of hydrogen and oxygen stable isotopes in understanding water movement along the soil-plant-atmosphere continuum / T.E. Dawson, R.C. Pausch, H.M. Parker Introduction Stable isotopes and our understanding of water movement along the soil-plant-atmospheric continuum Future research on isotopes and the SPAC References Section 4. Integration of terrestrial ecosystems 12. Oxygen isotope effects during CO2 exchange: from leaf to ecosystem processes / L.B. Flanagan Introduction Discrimination against C18O16O during photosynthetic gas exchange Oxygen isotope effects during respiratory CO2 exchange Relative influence of photosynthesis, respiration and turbulent fluxes on the isotope ratio of atmospheric CO2 in plant canopies Regional and global variation in the influence of terrestrial ecosystems on the oxygen isotope ratio of atmospheric CO2 References 13. Carbon isotope discrimination of terrestrial ecosystems / N. Buchmann, R.J. Brooks, L.B. Flanagan and J.R. Ehleringer Introduction Methodology Variation in Δe estimates Conclusions References 14. Assessing sensitivity to change in desert ecosystems - a stable isotope approach / J.R. Ehleringer, R.D. Evans and D. Williams Introduction Deserts as pulse-driven ecosystems Water uptake patterns by aridland plants Stomatal limitations as inferred from carbon isotope ratios Nitrogen sources Sensitivity of Colorado Plateau arid land ecosystems to invasions Conclusions References Section 5. Integration of marine ecosystems 15. Carbon stable isotope fractionation in marine systems: open ocean studies and laboratory studies / A.M. Johnston and H. Kennedy Introduction Open ocean studies Laboratory studies Recommendations for future research References 16. 15N and the assimilation of nitrogen by marine phytoplankton: the past, present and future? / N.J.P Owens and L.J. Watts Introduction The past - a short historical review Natural abundance v tracer studies The present - methods and techniques The present - a discussion of results from recent studies The future - possible developments for 15N studies in biological oceanography Summary and conclusions References Section 6. The immediate past: the Holocene 17. Archaeological reconstruction using stable isotopes / A.M. Pollard Introduction Isotope archaeology Dietary reconstruction using stable isotopes Isotopes and human mobility Summary References 18. Stable isotopes in tree ring cellulose / R. Switsur and J. Waterhouse Introduction Atmospheric carbon dioxide and carbon stable isotope ratios Hydrogen and oxygen stable isotope ratios References Section 7. Palaeoclimatic reconstructions from Precambrian to Quaternary 19. Phylogeny, palaeoatmospheres and the evolution of phototrophy / J.A. Raven Introduction The phylogeny of O2-producing phototrophs and their carboxylases Timing of origin of taxa of O2-evolving phototrophs in relation to changes in atmospheric composition The contribution of 13C/12C measurements to our understanding of the evolution of phototrophy Is the 13CO2/12CO2 discrimination factor of RUBISCO subject to direct natural selection? Conclusions and prospects References 20. Modelling changes in land plant function over the Phanerozoic / D.J. Beerling and F.I. Woodward Introduction Atmospheric evolution Phanerozoic changes in leaf function Terrestrial productivity in the Carboniferous Global patterns of leaf carbon isotope composition Concluding remarks References 21. Carbon isotopes, diets of North American equids, and the evolution of North American C4 grasslands / T.E. Cerling, J.M. Harris and B.J. McFadden Introduction Sampling protocol and sources of material Transition to C4 diet in equids: occurrence of C4-dominated diets, hypsodonty, and the radiation of equid genera Geographical and temporal distribution of C4 grasses in North America Regional patterns and variations History of C4 grasses versus C4 grasslands in North America Equid diversity during the Neogene Global expansion of C4 ecosystems Summary and implications References 22. Carbon isotopes in lake sediments and peats of last glacial age: implicati