ALBERT

Note: Contents 1 Scope / G. Matthess 2 Polar Organic Substances and Their Role in the Water-Saturated and -Unsaturated Zones 2.0 Introduction / F.H. Frimmel 2.1 Isolation Procedures and Characterization Methods 2.1.1 Isolation and General Characterization of Organic Acids from Pore Water / F.H. Frimmel 2.1.2 Isolation and Characterization of Soil Humic Matter / W. Finger, B. Post and H. Klamberg 2.1.3 Isolation and Characterization of Organic Substancesin Ground Water and Sediments / F. Selenka and A. Hack 2.1.4 Chromatographie Characterization of the Acid-Soluble Part of Humic Substances / F.H. Frimmel 2.1.5 Spectroscopic Characterization of Humic Substances in the Ultraviolet and Visible Region and by Infrared Spectroscopy / G. Abbt-Braun 2.1.6 Temperature-Programmed/Time-Resolved Pyrolysis Field lonization Mass Spectrometry - a New Method for the Characterization of Humic Substances / H.-R. Schulten 2.1.7 Interpretation of the Pyrolysis Products of Isolated Humic and Fulvic Acids / G. Abbt-Braun 2.1.8 Characterization of Isolated Humic Material by 13C Nuclear Magnetic Resonance Spectroscopy /J. Buddrus and P. Burba 2.1.9 Characterization of Humic Substances Extracted by Organic Solvents / B. Post and H. Klamberg 2.2 Interaction of Inorganics with Humic Substances 2.2.1 Investigation of Metal Complexation by Polarography and Fluorescence Spectroscopy / F.H. Frimmel 2.2.2 Determination of Complexation Equilibria by the Ion-Exchange Method / W. Finger and H. Klamberg 2.2.3 Sorption of Metals on Humic Material / R. Becker and H. Klamberg 2.2.4 Interactions of Humic Substances with Iodine / K. G. Heumann and C. Reifenhäuser 2.2.5 Experiments on the Influence of Organic Ligands upon Kinetics of Feldspar Weathering / A. Petersen, G. Matthess and D. Schenk 2.3 Characterization of Some Organic Acids in the Subsurface of the Sandhausen Ecosystem / T. Cordt and H. Kussmaul 2.3.4 Organic Acids 2.3.5 Conclusions 3 Carbonate Systems 3.0 Introduction / E. Usdowski 3.1 Dissolution Kinetics in the Generation of Carbonate Ground Waters 3.1.1 Theoretical and Experimental Results of the Kinetics of Calcite Dissolution and Precipitation / W. Dreybrodt 3.1.2 Field Measurements and Laboratory Experiments on Calcite Dissolution Kinetics of Natural Porous Media / J. Baumann and H.D. Schulz 3.2 Field Studies on Subsurface Water of Selected Sites / B. Merkel and J. Grossmann 3.2.1 Pore Water Sampling in Carbonate Terrains 3.2.2 Variation of Inorganic Carbon in the Unsaturated Zone of a Carbonate Gravel System / L. Eichinger and B. Merkel 3.2.3 Isotope Geochemistry of the Subsurface Carbonate System in Sandhausen and Bocholt / H. Dörr, W. Leuchs, P. Obermann, W. Regenberg and C. Sonntag 3.2.4 Application of Stable Carbon and Sulfur Isotope Models to the Development of Ground Water in a Limestone-Dolomite-Anhydrite-Gypsum Area / K.W. Schaefer and E. Usdowski 3.2.5 A dissolution Front at the Contact of Sandsto Marly Limestone Aquifers / H.R. Langguth and R. Schulz 3.2.6 Carbonate Rock Dissolution Under Intermediate System Conditions / J. Michaelis 3.3 Alteration in Karst Systems 3.3.1 Mineralogy and Hydrogeochemistry of the Gypsum Karst of Foum Tatahouine, South Tunisia / W. Smykatz-Kloss, H. Hötzl and H. Kössl 3.3.2 Dedolomitization and Salt Formationin a Semi-Arid Environment / W. Smykatz-Kloss, and J. Goebelbecker 3.3.3 Transformation Processes in Paleokarst Sediments and Chemistry of Modern Waters in the Aladag Region, Turkey / M. Cevrini and W. Echle 4 Silicate Systems 4.0 Introduction / G. Matthess 4.1 Redox Reactions in the Subsurface 4.1.1 Anoxic Reaction Zones in an Aquifer Influenced by Increasing Nitrate and Sulfate Contents / W. Leuchs and P. Obermann 4.1.2 Nitrogen and Oxygen Isotopes as Indicators for Nitrification and Denitrification / H.-L. Schmidt, S. Voerkelius and A. Amberger 4.1.3 Redox Conditions and Microbial Sulfur Reactions in the Fuhrberger Field Sandy Aquifer / J. Böttcher, O. Strebet and W. Kölle 4.1.4 Influence of Fine-Grained Cover Beds on the Chemistry of Shallow Ground Water / G. Ebhardt and P. Fritsch 4.1.5 Hydrogeochemical Processes During the Passage of Surface Water and Ground Water Through Genetically Different Organic Sediments / H. Brühl, A. Moschick and H. Verleger 4.1.6 Hydrochemical Phenomena in the Dorsten Leakage System / M. Hoffmann, H.R. Langguth and J. Larue 4.1.7 Hydrogeochemical Processes in the Hamburg Deep Aquifer System / E.P. Loehnert, W. Bauhus and C. Sonntag 4.2 Rock-Water Interaction 4.2.1 Aluminium Speciation in Acid Soil Water and Ground Water / G. Dietze and B. Ulrich 4.2.2 Mineral-Pore Water Interaction in Two Soil Types on Pleistocene Sediments at Hamburg / F. Sztuka and I. Valeton 4.2.3 Subsurface Hydrochemical Reactions in the Sandhausen Forest Ecosystem / H. Jacob, W. Regenberg and C. Sonntag 4.3 Reaction Kinetics 4.3.1 Experimental Methods for Determining Dissolution Rates of Silicates - a Comparison / D. Schenk, G. Matthess, A. Dahmke and A. Petersen 4.3.2 Field Studies on the Kinetics of Silicate Minerals/Water Interaction / G. Matthess, A. Petersen, D. Schenk and A. Dahmke 5 Microbiology 5.0 Introduction / P. Hirsch 5.1 Characterization of the Natural Subsurface Environment 5.1.1 Morphological and Taxonomic Diversity of Ground Water Microorganisms / P. Hirsch, E. Rades-Rohkohl, J. Kölbel-Boelke and A. Nehrkorn 5.1.2 Methods of Studying Ground Water Microbiology: Critical Evaluations and Method suggestions / P. Hirsch, E. Rades-Rohkohl, J. Kölbel-Boelke, A. Nehrkorn, R. Schweisfurth, F. Selenka and A. Hack 5.1.3 Organic Substances in Ground Water and Sediments and Their Relationships to Microorganisms in a Sandy Aquifer / E Selenka and A. Hack 5.2 Microbial Activities 5.2.1 Observations on the Physiology of Microorganisms from Pristine Ground Water Environments / P. Hirsch 5.2.2 Formation and Transformation of Manganese Oxidation States by Bacteria / J. Gottfreund and R. Schweisfurth 5.2.3 Interactions Between Humic Acids and Microorganisms / G.-J. Tuschewitzki, B. Langer and H. Otremba 5.3 Microbiology of Selected Locations 5.3.1 Subsurface Microbial Activities in the Sandhausen Forest Ecosystem / R. Weyandt and R. Schweisfurth 5.3.2 Heterotrophic Bacterial Communities in the Bocholt Aquifer System / J. Kölbel-Boelke and A. Nehrkorn 5.3.3 The Natural Microflora of the Segeberger Forest Aquifer System / P. Hirsch and E. Rades-Rohkohl 5.3.4 Microbiological Observations of the Unsaturated Zone of a Quaternary Gravel Profile / I. Alexander, G. Freitag, J. Grossmann, Β. Merkel, P. Udluft and I. Ullsperger 6 Hydrogeochemical and Geochemical-Hydraulic Models and Model Concepts 6.0 Introduction / H.-D. Schulz 6.1 Hydrogeochemical Models and Concepts 6.1.1 Development of Secondary Permeability of a Fracture Aquifer in Carbonate Rocks: a Model / W. Dreybrodt 6.1.2 Some Aspects of Modelling the Carbon System in the Unsaturated Zone / B. Merkel, L. Eichinger and P. Udluft 6.1.3 Methodical Concepts in Silicate-Water Interaction - a Comparison of Results / A. Dahmke, G. Matthess, A. Petersen and D. Schenk 6.2 Combination of Transport and Geochemical Reactions 6.2.1 Water Movement and Geochemical Reactions in the Unsaturated Zone of Sands with Low Calcite Contents / H.-D. Schulz 6.2.2 Physical and Biochemical Processes Affecting Mass Transport in the Bocholt Aquifer System / C. Bugner and R. Mull 6.2.3 Tritium and 3He Measurements as Calibration Data for Ground Water Transport Models / H. Dörr, P. Schlosser, M. Stute and C. Sonntag 6.2.4 39Ar-, 85Kr-, 3He- and 3H Isotope Dating of Ground Water in the Bocholt and Segeberger Forst Aquifer Systems / M. Forster, H. Loosli and S. Weise 6.2.5 Modelling of Mass Balance and of Microbial Transformations in the Fuhrberger Feld Sandy Aquifer / O. Strebet, J. Böttcher and W.H.M. Duynisveld 6.3 Description of Geochemical Environments with Thermodynamic Equilibrium Models / M. Rolling and H.-D. Schulz 6

Note: TABLE OF CONTENTS FOREWORD PREFACE INTRODUCTION SECTION 1: GENERAL PAPERS Case Study of a Grounded Jam; Restigouche River, New Brunswick / by S. Beltaos and B.C. Burrell Water Balance and Geochemistry Studies in a Tundra Watershed, District of Keewatin, Northwest Territories / by G.G. Bursey, T.W.D. Edwards and S.K. Frape River Icing Mounds: a Winter Water Source on the Eastern North Slope of Alaska / by E.F. Chacho, C.M. Collins, A.J. Delaney and S.A. Arcone Geochemical Evolution of Water in a Continental High Boreal Wetland Basin: Preliminary Results / by D. Craig A Physical Model of Ice Overthn.ist during the Break-Up of Intact River-Ice Covers / by M.N. Demuth and T.D. Prowse Seasonal Changes in the Hydrochemistry of Land Drainage: Colour Lake Catchment, Axel Heiberg Island, N.W.T. / by M. English, S. Schiff, M. Ecclestone, W.P. Adams, M. Hinton, L. Pezzutto, R. Elgood, C. Allan and D. Pierson Shape, Length and Flow· Conditions of Conduits at South Cascade Glacier, Washington State, U.S.A. / by A.G. Fountain CO2-Rich Ground Waters of the Flat River Valley, N.W.T. / by S.M. Hamilton, F.A. Michel and C.W. Jefferson Regional Snow Ablation in the Alaskan Arctic / by L.D. Hinzman, D.L. Kane and R.E. Giec Regionalization of Low Flows in Yukon Territory / by J.R. Janowicz Discharge Regimes of a Glacierized Basin, Slims River, Yukon / by P.G. Johnson Pulses in Glacier Discharge: Indicators of the Internal Drainage System of Glaciers / by P.G. Johnson Drainage of an Ice-Dammed Lake, Kaskawulsh Glacier Basin, Yukon / by J.N. Kasper and P.G. Johnson On Areal Distribution. of Snowcover in a Mountainous Area / by A. Killingtveit and K. Sand Hydrogeochemical Aspects of Two Selected Sites in a Fringe Zone of Discontinuous Permafrost / by Y.T.J. Kwong, D. Craig and M. Griffin Ice-Cover Growth and Freeze-Out of Solutes in a Mackenzie Delta Lake / by L.F.W. Lesack, P. Marsh and R.E. Hecky Hydrological Processes in a Small Catchment Containing a Perennial Snowbank, Melville Island, N.W.T. / by A.G. Lewkowicz and K.L. Young On Modelling Surface Meltwater Discharge from Arctic and Alpine Glaciers / by D.S. Munro A High Arctic Occurrence of Seasonal Frost Mounds / by W.H. Pollard Relationships between Snow Chemistry and Blowing Snow: Initial Findings / by J.W. Pomeroy, T.D. Davies and M. Tranter Peatlands of the Lake Melville Coastal Plain, Labrador / by J.S. Price, D.A. Maloney and F.G. Downey Constraints on the Origin of Acidity in Colour Lake, Axel Heiberg Island (79°25'N) / by S. Schiff, M. English, M. Ecclestone, R. Elgood, M. Hinton and L. Pezzutto Longitudinal Dispersion in the Ice-Covered Athabasca River / by G. Van Der Vinne and D. Andres Economic Impact of River Ice Jams in Canada / by G. Van Der Vinne, T.D. Prowse and D. Andres Estimation of Mass-Balance and Run-Off Component of Urumqi Glacier No. I from Water-Balance Analysis / by Z. Yang SECTION 2: MODELLING Interactive Modelling of Cold Regions Watersheds with SSARR / by E.A. Cassell and T. Pangburn Estimates of Evaporation in the Yukon and Northwest Territories / by J. Haas A Basin Water-Storage Model to Forecast Columbia River Discharge / by W. Tangborn Preliminary Findings from Experiments on Frazil and Anchor Ice in a Circular Flume / by G. Tsang and B. Trapp On Computer Simulation of Ice Motion in Rivers / by O.G. Vinogradov, A. Springer and P. Wierzba SECTION 3: OTHER CONTRIBUTIONS Transformation of Heavy Metals under Tidal Flows in the Severnaya Dvina Estuary / by V.F. Brekhovskikh, A.N. Malutin and M.A. Mordasov Northern River: BOD-DO Model / by V.F. Brekhovskikh and G.V. Volpian Water Storage in Alpine Glaciers (Abstract) / by M.M. Brugman Snowmelt Infiltration into Frozen Soil at Sites in the Discontinuous Permafrost Zone Near Mayo, Yukon Territory / by C.R. Bum Use of Periphyton Indices as a Biological Measure of Water Quality in Small Rivers / by E.A. Goncharevich Yukon and Northwest Territories Ground-Water Data Base / by P. Hardisty, V. Schilder, T. Dabrowski and J. Wells Some Aspects of Glacier Hydrology in China / by X. Hu and Z. Yang Modelled Estimates of Changes in the Water Balance of Forested Northern River Basins / by Yu.G. Motovilov and N.A. Nazarov Study of Surface Water Quality in the Northern Region Subject to Pollution / by A.N. Shammasov Response of Riverine and Lacustrine Biocenoses to Human Impact / by N.S. Zolotareva and M.A. Mordasov APPENDIX A: LIST OF PARTICIPANTS