ALBERT

Note: Contents: Symbols. - Preface. - Acknowledgements. - 1 PERIGLACIAL CONDITIONS. - 1.1 The significance of freezing in soils and rocks. - 1.2 Freezing and thawing in porous materials. - 1.3 Climate and ground freezing. - 1.3.1 Permafrost. - 1.3.2 Ephemeral freezing. - 1.4 Characteristics of permafrost. - 1.5 Manifestations of freezing and thawing of the ground. - 2 MORPHOLOGY OF PERMAFROST AND SEASONALLY FROZEN GROUND. - 2.1 Frozen ground as a geological material. - 2.2 Ice in the ground. - 2.2.1 Excess ice. - 2.2.2 Frost-heave ice: segregation ice. - 2.2.3 Intrusive ice; ice wedge ice, and other forms. - 2.2.4 Ice of external origin: buried glacier, snow, lake and river ice; icings. - 2.2.5 Age of ice in permafrost. - 2.2.6 Distribution of ground ice. - 2.2.7 Submarine frozen ground. - 2.2.8 Micromorphology of freezing soils. - 2.2.9 Pedology and soil freezing. - 2.3 Gas hydrates (clathrates). - 2.4 World distribution of permafrost. - 2.4.1 Land permafrost. - 2.4.2 Submarine distribution. - 2.5 Seasonal freezing. - 3 CLIMATE AND FROZEN GROUND. - 3.1 Introduction. - 3.2 Seasonal frost and permafrost. - 3.3 Climate and permafrost distribution. - 3.4 The importance of microclimates. - 3.5 The surface energy balance. - 3.5.1 The nature of surface interactions. - 3.5.2 A buffer layer model. - 3.5.3 Effects of surface changes. - 3.6 Possible effects of climatic change. - 3.7 Summary. - 4 THE GROUND THERMAL REGIME. - 4.1 Introduction. - 4.2 Heat flow in the ground. - 4.2.1 The heat conduction equation. - 4.3 Thermal properties. - 4.3.1 Thermal conductivity. - 4.3.2 Heat capacity. - 4.3.3 Thermal diffusivity. - 4.4 Ground thermal conditions. - 4.4.1 Geothermal heat flow and permafrost thickness. - 4.4.2 Effects of climatic change. - 4.4.3 Seasonal temperature variations. - 4.5 Lateral variations in ground temperatures. - 4.5.1 Influence of water bodies. - 4.6 Summary. - 5 THE FORMS OF THE GROUND SURFACE 1: SLOPES AND SUBSIDENCES. - 5.1 Freezing and thawing and displacements of the ground. - 5.2 Instability of soil on slopes: overview. - 5.3 The mystery of solifluction. - 5.3.1 Origin of small movements. - 5.3.2 Creep in the frozen state. - 5.4 Rock glaciers. - 5.5 Effects of thawing: landslides and slumps. - 5.5.1 Loss of cohesive strength. - 5.5.2 Soil consolation and strength during thaw. - 5.5.3 Thermokarst. - 5.6 The extent and variety of movements on slopes. - 6 THE FORMS OF THE GROUND SURFACE 2: STRUCTURES AND MICROTOPOGRAPHY OF LEVEL GROUND. - 6.1 Surface characteristics. - 6.2 Features characterised by accumulation of ice. - 6.2.1 Pingos. - 6.2.2 Palsa. - 6.2.3 Hydrolaccoliths. - 6.3 Differential freeze-thaw effects. - 6.3.1 Uplift of stones. - 6.3.2 Soil hummocks. - 6.3.3 Earth circles. - 6.3.4 Stone polygons and rings. - 6.4 Thermal contraction and cracking. - 6.4.1 Soil and ice wedges. - 7 THERMODYNAMIC BEHAVIOUR OF FROZEN SOILS. - 7.1 Soil: A porous system. - 7.1.1 'Freezing points' and latent heat. - 7.1.2 Proportions of ice and water. - 7.1.3 Water contents and thermal properties. - 7.2 Energy status, or potential, of soil water. - 7.2.1 Freezing point depression, potential, and free energy. - 7.2.2 Potential of water in freezing soils. - 7.3 Pressure and temperature relations. - 7.4 Origin of frost heave and frost heave pressures. - 7.5 Permeability of frozen soils. - 7.6 Frost heave as a thermodynamic-rheologic process. - 8 HYDROLOGY OF FROZEN GROUND. - 8.1 Introduction. - 8.2 Surface hydrology. - 8.2.1 Bank stability in permafrost regions. - 8.3 Groundwater. - 8.3.1 Icings and frost blisters. - 8.3.2 Water supply. - 8.4 Hydrodynamics of frozen ground. - 8.4.1 Unfrozen water content. - 8.4.2 Gradients of water potential due to freezing temperatures. - 8.4.3 Moisture transfer mechanisms. - 8.4.4 Moisture transport in saturated soils. - 8.4.5 Moisture transport in unsaturated soils. - 8.5 Ice segregation and frost heaving. - 8.5.1 Coupled heat and moisture flow at freezing temperatures. - 8.5.2 The hydrodynamic model. - 8.5.3 The rigid ice model. - 8.5.4 Extreme forms of ice segregation. - 8.6 Seasonal hydrodynamics in permafrost. - 8.6.1 Water migration beyond the fringe. - 8.6.2 Development of aggradational ice. - 9 THE MECHANICS OF FROZEN GROUND. - 9.1 Introduction. - 9.2 The frozen soil system. - 9.2.1 Properties of the ice. - 9.2.2 The strength of soils. - 9.3 Deformation of frozen ground. - 9.3.1 Characteristics of creep. - 9.3.2 The origins of creep. - 9.4 Strength characteristics of frozen soils. - 9.4.1 Rates of strain and processes of deformation. - 9.5 Temperature dependence of creep rate and strength. - 9.6 Effect of soil composition. - 9.6.1 Size of soil particles. - 9.6.2 Ice content. - 9.6.3 Pore water salinity. - 9.7 Effect of normal and confining stresses on strength and deformation. - 9.7.1 Internal, thermodynamically controlled stresses. - 9.8 Field situations. - 9.8.1 Role of temperature and pressure variations. - 10 GEOCRYOLOGY PAST AND FUTURE. - 10.1 Geocryology and geotechnique. - 10.2 Energy exchange and climate instability. - 10.3 Thermodynamic and mechanical properties of frozen ground. - 10.4 Submarine and other extreme conditions for permafrost. - References. - Index.

Note: Contents Foreword xi OPENING ADDRESSES Professor G.O.P. Obasi, Secretary General, World Meteorological Organization Dr M.K. Tolba, Executive Director, United Nations Environment Programme Dr F. Mayor, Director General, United Nations Educational, Scientific and Cultural Organization Professor M.G.K. Menon, President, International Council of Scientific Unions Dr H. de Haen, Assistant Director General, Food and Agriculture Organization SCIENTIFIC AND TECHNICAL SESSIONS HIGHLIGHTS OF THE IPCC ASSESSMENT The Intergovernmental Panel on Climate Change (IPCC) / B. Bolin Scientific Assessment of Climate Change: Summary of the IPCC Working Group I Report / J.T. Houghton Greenhouse Gases and Other Climate Forcing Agents / U. Siegenthaler and E. Sanhueza Climate Change Prediction / J. F. B. Mitchell and Zeng Qingcun Climate Trends and Variability / M. Coughian and B.S. Nyenzi Climate Change Impact Studies: The IPCC Working Group II Report / Yu. Izrael Impacts on Hydrology and Water Resources / H.E. Lins, I.A. Shiklomanov and E.Z. Stakhiv Impact of Climate Change on Agriculture, A Critical Assessment / S.K. Sinha Potential Impacts of Climate Change on Human Settlements, the Energy, Transport and Industrial Sectors; Human Health and Air Quality / M. Hashimoto and S. Nishioka The Response Strategies Working Group of the IPCC / F. Bernthal The Greenhouse Marathon: Proposal for a Global Strategy / P. Vellinga and R.J. Swart Adaptation Measures / K.M. Sarma Limitation Strategies / K. Yokobori Report of the IPCC Special Committee on the Participation of Developing Countries / J. Ripert OVERVIEW OF THE WORLD CLIMATE PROGRAMME The World Climate Programme: Achievements and Challenges / J.P, Bruce Modern Data and Applications: World Climate Data Programme, World Climate Applications Programme / V.G. Boldirev Overview of the World Climate Research Programme / P. Morel World Climate Impact Studies Programme / J.C.I. Dooge CLIMATE RESEARCH Global Climate, Energy and Water Cycle / G.A. McBean Remote Sensing and Global Climate Change: Water Cycle and Energy Budget / H. Grassl World Ocean Circulation and Climate Change: Research Programmes and a Global Observing System / D.J. Baker Short Term Climate Variability and Predictions / J. Shukia Paleodata, Paleoclimates and the Greenhouse Effect / H. Oeschger Climate Prediction Based on Past and Current Analogues / M.I. Budyko Detection of the Enhanced Greenhouse Effect on Climate / T.M.L. Wigley and S.C.B. Raper CLIMATE CHANGE AND SOCIO-ECONOMIC ACTIVITIES Water Climate, Water and Development / J. Sircoulon Drought Issues for the 1990s / M.H. Glantz and W. Degefu Agriculture and Food Agriculture and Food Systems / M.S. Swaminathan The Potential Effect of Climate Changes on Agriculture / M. Parry and Zhang Jiachen Oceans, Fisheries and Coastal Zones Effects of Global Climatic Change on Marine Ecosystems and Fisheries / T. Kawasaki Sea Level Rise and Coastal Zone Management / E.M. Eid and C.H. Huisbergen Energy Beginning to Reduce Greenhouse Gas Emissions need not be Expensive: Examples from the Energy Sector / E. Mills, D. Wilson and TB. Johansson Land Use and Urban Planning Climate and Land Use in North Africa / M. Kassas Climate and Urban Planning / R. Taesler Human Dimensions Human Well-being, Diseases and Climate / W.H. Weihe and R. Mertens Population and Global Climate Change / D. Norse Public Information and Attitudes / R. Lamb Environment and Development Climate, Environment and Ecology / W.H. Schlesinger Climate, Tropical Ecosystems and the Survivability of Species / P. Olindo Some Possible Impacts of Climate Change on African Ecosystems / C.H.D. Magadza Forests Forests: Their Role in Global Change, with Special Reference to the Brazilian Amazon / E. Salati, R.L. Victoria, L.A. Martinelli and J. E. Richey Integrated Studies Climate Change and Risk Management / K. Turner, T. ORiordan and R. Kemp Climate, Climate Change, and the Economy / N.S. Jodha and W.J. Maunder Assessing the Regional Implications of Climate Variability and Change / W.E. Riebsame and A. Magalhaes SPECIAL PRESENTATION Climate Change and the United Nations Conference on Environment and Development / M.F. Strong TASK GROUPS AND CONSULTATION GROUP REPORTS Task Group I Climate, Hydrology and Water Resources Task Group 2 Agriculture and Food Task Group 3 Oceans, Fisheries and Coastal Zones Task Group 4 Energy Task Group 5 Land Use and Urban Planning Task Group 6 Human Dimensions of Climate Change Task Group 7 Environment and Development Task Group 8 Forests Task Group 9 WCP Overview Task Group 10 The World Climate Programme: Overview and Future Task Group 11 Scientific Components of International Agreements Task Group 12 Synthesis Consultation Group on the Special Needs of Developing Countries SUMMARIES OF PANEL DISCUSSIONS Global Climate Analogues and Global Climate Models Climate and Environmentally Sustainable Economic Development Industry's Response Co-operation in International Research Programmes CONFERENCE STATEMENT MINISTERIAL SESSIONS OPENING CEREMONY Introduction by Prof. G.O.P. Obasi, Secretary General, WMO H.E. Mr. Arnold Koller, President of the Swiss Confederation His Majesty King Hussein Bin Talal, of the Royal Hashemite Kingdom of Jordan The Rt. Hon. Margaret Thatcher, Prime Minister of the United Kingdom of Great Britain and Northern Ireland H.E. Mr. Michel Rocard, Prime Minister of France The Rt. Hon. Edward Fenech-Adami, Prime Minister of Malta The Rt. Hon. Bikenibeu Paeniu, Prime Minister of Tuvalu Statement by Dr. E. Saouma, Director General, FAO CLOSING CEREMONY Statement by Dr. F. Mayor, Director General, UNESCO MINISTERIAL DECLARATION Appendix 1 SWCC Inter-Agency Committees Appendix 2 Poster Session Papers Appendix 3 Statement by Environmental Non-Governmental Organizations Appendix 4 Participants at the Scientific/Technical Sessions Appendix 5 Countries and Organizations Represented at the Ministerial Sessions Appendix 6 Participating Non-Governmental Organizations Appendix 7 Acronyms Appendix 8 Units

Note: Contents Preface Acknowledgements Crustal development: the craton Uplift history of the East Antarctic shield: constraints imposed by high-pressure experimental studies of Proterozoic mafic dykes / S.M. KUEHNER & D.H. GREEN The crustal evolution of some East Antarctic granulites / S.L. HARLEY Structural evolution of the Bunger Hills area of East Antarctica / P. DING & P.R. JAMES Structural geology of the early Precambrian gneisses of northern Fold Island, Mawson Coast, East Antarctica / P.R. JAMES, P. DING & L. RANKIN The intrusive Mawson charnockites: evidence for a compressional plate margin selling of the Proterozoic mobile belt of East Antarctica / D.N. YOUNG & D.J. ELLIS A review of the field relations, petrology and geochemistry of the Borgmassivet intrusions in the Grunehogna province, western Dronning Maud Land, Antarctica / J.R. KRYNAUW, B.R. WATTERS, D.R. HUNTER & A.H. WILSON Volcanic rocks of the Proterozoic Jutulstraumen Group in western Dronning Maud Land, Antarctica / B.R. WATTERS, J.R. KRYNAUW & D.R. HUNTER The timing and nature of faulting and jointing adjacent to the Pencksokket, western Dronning Maud Land, Antarctica / G.H. GRANTHAM & D.R. HUNTER The tectonic and metamorphic evolution of H.U. Sverdrupfjella, western Dronning Maud Land, Antarctica / A.R. ALLEN Granulites of northern H.U. Sverdrupfjella, western Dronning Maud Land: metamorphic history from garnet-pyroxene assemblages, coronas and hydration reactions / P.B. GROENEWALD & D.R. HUNTER A structural survey of Precambrian rocks, Heimefrontfjella, western Neuschwabenland, with special reference to the basic dykes / W. FIELITZ & G. SPAETH Reflection seismic measurements in western Neuschwabenland / A. HUNGELJNG & F. THYSSEN Geology and metamorphism of the Sør Rondane Mountains, East Antarctica / K. SHIRAISHI, M. ASAMI, H. ISHIZUKA, H. KOJIMA. S. KOJIMA, Y. OSANAI, T. SAKIYAMA, Y. TAKAHASHI, M. YAMAZAKI & S. YOSHIKURA Late Proterozoic paired metamorphic complexes in East Antarctica, with special reference to the tectonic significance of ultramafic rocks / Y. HIROI, K. SHIRAISHI & Y. MOTOYOSHI Petrographic and structural characteristics of a part of the East Antarctic craton, Queen Maud Land, Antarctica / M.K. KAUL, R.K. SINGH, D. SRIVASTAVA, S. JAYARAM & S. MUKERJI Structural and petrological evolution of basement rocks in the Schirmacher Hills, Queen Maud Land, East Antarctica (Extended abstract) / S. SENGUPTA Metamorphic evolution of granulites from the Rauer Group, East Antarctica: evidence for decompression following Proterozoic collision / S.L. HARLEY Fault tectonics and magmatic ages in the Jelly Oasis area, Mac. Robertson Land: a contribution to the Lambert Rift development / J. HOFMANN Major fracture trends near the western margin of East Antarctica / P.D. MARSH Mesozoic magmatism in Greater Antarctica: implications for Precambrian plate tectonics / T.S. BREWER & P.D. CLARKSON Crustal development: the Transantarctic Mountains Sedimentary palaeoenvironments of_the Riphaean Turnpike Bluff Group, Shackleton Range / H.-J. PAECH, K. HAHNE & P. VOGLER Precambrian ancestry of the Asgard Formation (Skelton Group): Rb-Sr age of basement metamorphic rocks in the Dry Valley region, Antarctica / C.J. ADAMS & P.F. WHITLA The Priestley Formation, Terra Nova Bay, and its regional significance / D.N.B. SKINNER The myth of the Nimrod and Beardmore orogenies / E. STUMP, R.J. KORSCH & D.G. EDGERTON Age of the metamorphic basement of the Salamander and Lanterman ranges, northern Victoria Land, Antarctica / C.J. ADAMS & A. HOHNDORF Recovery and recrystallization of quartz and 'crystallinity' of illite in the Bowers and Robertson Bay terranes, northern Victoria Land, Antarctica / W. BUGGISCH & G. KLEINSCHMIDT The boundary of the East Antarctic craton on the Pacific margin / N.W. ROLAND Northern Victoria Land, Antarctica: hybrid geological, aeromagnetic and Landsat-physiographic maps / B.K. LUCCHITTA, J.A. BOWELL, F. TESSENSOHN & J.C. BEHRENDT Setting and significance of the Shackleton Limestone, central Transantarctic Mountains / A.J. ROWELL & M.N. REES Lower-mid-Palaeozoic sedimentation and tectonic patterns on the palaeo-Pacific margin of Antarctica / M.G. LAIRD The pre-Devonian Palaeozoic elastics of the central Transantarctic Mountains: stratigraphy and depositional settings / M.N. REES & A.J. ROWELL The Devonian Pacific margin of Antarctica / M.A. BRADSHAW The palaeo-Pacific margin as seen from East Antarctica / J.W. COLLINSON Permo-Carboniferous glacial sedimentation in the central Transantarctic Mountains and its palaeotectonic implications (Extended abstract) / J.M.G. MILLER & B.J. WAUGH Clay mineralogy and provenance of fine-grained Permian elastics, central Transantarctic Mountains / L.A. KRISSEK & T.C. HORNER Evidence for a low-gradient alluvial fan from the palaeo-Pacific margin in the Upper Permian Buckley Formation, Beardmore Glacier area, Antarctica / J.L. ISBELL Provenance and tectonic implications of sandstones within the Permian Mackellar Formation, Beacon Supergroup of East Antarctica / R.S. FRISCH & M.F. MILLER Crustal development: Weddell Sea-Ross Sea region Evolution of the Gondwana plate boundary in the Weddell Sea area / Y. KRISTOFFERSEN & K. HINZ Petrology and palynology of Weddell Sea glacial sediments: implications for subglacial geology / J.B. ANDERSON, B.A. ANDREWS, L.R. BARTEK & E.M. TRUSWELL A multichannel seismic profile across the Weddell Sea margin of the Antarctic Peninsula: regional tectonic implications / P.F. BARKER & M.J. LONSDALE Verification of crustal sources for satellite elevation magnetic anomalies in West Antarctica and the Weddell Sea and their regional tectonic implications / M.E. GHIDELLA, C.A. RAYMOND & J.L. LABRECQUE Aeromagnetic studies of crustal blocks and basins in West Antarctica: a review / S.W. GARRETT Palaeomagnetic studies of Palaeozoic rocks from the Ellsworth Mountains, West Antarctica / M. FUNAKI. M. YOSHIDA & H. MATSUEDA Seismic reflection profiling of a sediment-filled graben beneath ice stream B, West Antarctica / S.T. ROONEY. D.D. BLANKENSHIP, R.B. ALLEY & C.R. BENTLEY The aeromagnetic survey of northern Victoria Land and the western Ross Sea during GANOVEX IV and a geophysical-geological interpretation / W. BOSUM, D. DAMASKE, J.C. BEHRENDT & R. SALTUS The Ross Sea rift system, Antarctica: structure, evolution and analogues / F. TESSENSOHN & G. WORNER Structural and depositional controls on Cenozoic and (?)Mesozoic strata beneath the western Ross Sea / A.K. COOPER, F.J. DAVEY & J.C. BEHRENDT Crustal extension and origin of sedimentary basins beneath the Ross Sea and Ross Ice Shelf, Antarctica / A.K. COOPER, F.J. DAVEY & K. HINZ Chemical characteristics of greywacke and palaeosol of early Oligocene or older sedimentary breccia, Ross Sea DSDP Site 270 / A.B. FORD Extensive volcanism and related tectonism beneath the western Ross Sea continental shelf, Antarctica: interpretation of an aeromagnetic survey / J.C. BEHRENDT, H.J. DUERBAUM, D. DAMASKE, R. SALTUS, W. BOSUM & A.K. COOPER Geochemistry and tectonic implications of lower-crustal granulites included in Cenozoic volcanic rocks of southern Victoria Land / R.l. KALAMARIDES & J.H. BERG Geology, petrology and tectonic implications of crustal xenoliths in Cenozoic volcanic rocks of southern Victoria Land / J.H. BERG Geochemistry and petrology of ultramafic xenoliths of the Erebus volcanic province / F.M. MCGIBBON Lithospheric flexure induced by the load of Ross Archipelago, southern Victoria Land, Antarctica / T.A. STERN, F.J. DAVEY & G. DELISLE The structure and seismic activity of Mount Erebus, Ross Island / K. KAMINUMA & K. SHIBUYA Crustal development: the Pacific margin Mid-Palaeozoic basement in eastern Graham Land and its relation to the Pacific margin of Gondwana / A.J. MILNE & l.L. MILLAR Basement gneisses in north-western Palmer Land: further evidence for pre-Mesozoic rocks in Lesser Antarctica / S.M. HARRISON & B.A. PIERCY Granitoids of the Ford Ranges, Marie Byrd Lan