ALBERT

Note: Contents: Preface / G. A. Llano. - Welcoming Remarks / W. S. Benninghoff. - The Third Symposium in Historical Perspective / G. A. Knox. - Sir George E. R. Deacon: An Appreciation / K. J. Bertrand. - The Southern Ocean: History of Exploration / Sir George E. R. Deacon. - The Symposium. - Part I: The Structure and Function of Antarctic Marine Phytoplankton Ecosystems. - The Antarctic Marine Ecosystem / Joel W. Hedgpeth. - Primary Production and the Factors Controlling Phytoplankton Growth in the Southern Ocean / O. Holm-Hansen, S. Z. El-Sayed, G. A. Franceschini, and R. L. Cuhel. - Phytoplankton Biomass and Productivity in the Subtropical Convergence Area and Shelves of the Western Indian Subantarctic Islands / Jacqueline Plancke. - Sea Ice Habitats of Signy Island (South Orkneys) and Their Primary Productivity / Terence M. Whitaker. - Dissolved Oxygen and pH Increases by Primary Production in the Surface Water of Arthur Harbor, Antarctica, 1970-1971 / S. V. Shabica, J. W. Hedgpeth, and P. K. Park. - Heterotrophic Activity of Microorganisms in Antarctic Waters / R. Y. Morita, R. P. Griffiths, and S. S. Hayasaka. - Vitamins in the South Polar Seas: Distribution and Significance of Dissolved and Particulate Vitamin B12, Thiamine, and Biotin in the Southern Indian Ocean / A. F. Caducei and R. L. Cuhel. - Discussion. - Part II: The Structure and Function of Antarctic Marine Benthic Ecosystems. - Adaptations within the Antarctic Marine Benthic Ecosystem / Patrick M. Arnaud. - Bacterial Sulfur and Nitrogen Cycles in Sedimentary Deposits of "Fjord Bossière" (Kerguelen Archipelago) / D. Delille. - Antarctic Soft-Bottom, Macrobenthic Community Adaptations to a Cold, Stable, Highly Productive, Glacially Affected Environment / Michael D. Richardson and Joel W. Hedgpeth. - Ecological Adaptations by Antarctic Poikilotherms to the Polar Marine Environment / Martin G. White. - Scoloplos marginatus mcleani: Life Cycle and Adaptations to the Antarctic Benthic Environment / P. Hardy. - Benthic Bionomy of the Continental Shelf of the Kerguelen Archipelago, Macrofauna 2, Diversity of Benthic Annelid Population in a Fjord Close to the Morbihan Gulf / D. Desbruyeres. - Seasonal Variations in the Structure of Populations of Antarctic Polynoids and the Part Played by Polychaetes in the Biocenoses of the Arctic and Antarctic / V. G. Averincev. - Benthic Bionomy of the Continental Shelf of the Kerguelen Islands: Quantitative Data on the Echinoderms of the Morbihan Gulf / Alain Guille. - Seasonal Alterations in Coastal Communities in the Davis Sea / E. N. Gruzov. - First Investigations on the Density of Soft Bottom Meiofauna in Morbihan Bay (Kerguelen Islands) / J. Soyer and F. de Bovee. - Foods and Feeding Characteristics of Antarctic Asteroids and Ophiuroids / John H. Dearborn. - Analysis of the Gigantism and Dwarfness of Antarctic and Subantarctic Gammaridean Amphipoda / Claude De Broyer. - The Breeding Biology of Chorismus antarcticus (Pfeffer) and Notocrangon antarcticus (Pfeffer) (Crustacea, Decapoda) and Its Bearing on the Problems of the Impoverished Antarctic Decapod Fauna / J. Garrey H. Maxwell. - A Preliminary Investigation of the Lipids of Chorismus antarcticus (Pfeffer) (Crustacea, Decapoda) at South Georgia / Andrew Clarke. - Some Additions to Schemes of the Vertical Zonation of Marine Bottom Fauna / A. P. Andriashev. - Quantitative Studies on the Soft-Bottom Macrobenthic Animal Communities of Shallow Antarctic Bays / V. A. Gallardo, J. G. Castillo, M. A. Retamal, A. Yáñez, H. l. Moyano, and J. G. Hermosilla. - Discussion. - Part Ill: Adaptations in Antarctic Vertebrates (Physiology). - Mechanisms of Cold Adaptation in Polar Marine Animals / Bruce L. Umminger. - The Significance of Vertebrates in the Antarctic Marine Ecosystem / Richard M. Laws. - The Role of Glycoprotein Antifreezes in the Survival of Antarctic Fishes / Arthur L. DeVries and Yuan Lin. - New Cytological, Biochemical, and Physiological Data on the Colorless Blood of the Channichthyidae (Pisces, Teleosteans, Perciformes) / J. C. Hureau, J. M. Fine, M. Marneux, and D. Petit. - Respiratory and Circulatory Adaptations to the Absence of Hemoglobin in Chaenichthyid Fishes / Edvard A. Hemmingsen and Everett L. Douglas. - Thermo- and Osmoregulatory Responses Induced by Heating and Cooling the Rostral Brainstem of the Adelie Penguin / H. T. Hammel, J. E. Maggert, E. Simon, L. Crawshaw, and R. Kaul. - Body Temperature Regulation of the Emperor Penguin (Aptenodytes forsteri G.) During Physiological Fasting / Yvon Le Maho, Philippe Delclitte, and René Groscolas. - Cardiovascular Adaptations of the Giant Petrel, Macronectes giganteus, to the Antarctic Environment / David E. Murrish and Charles L. Guard. - Temperature Regulation in the Newborn Weddell Seal, Leptonychotes weddelli / R. Elsner, D. D. Hammond, D. M. Denison, and R. Wyburn. - Discussion. - Part IV: Adaptations in Antarctic Vertebrates (Ecology). - Evolution Within Pelagic Ecosystems: Aspects of the Distribution and Evolution of the Family Myctophidae / Richard F. McGinnis. - Aspects of the Diet of the Antarctic Silverfish, Pleuragramma antarcticum / H. H. DeWitt and T. L. Hopkins. - The Bacterial Microflora in the Digestive Tracts of Penguins and Fishes from the Kerguelen Islands / R. Lesel and J. P. Menet. - The Rockhopper Penguin (Eudyptes chrysocome moseleyi), of Saint Paul and New Amsterdam Islands / T. Duroselle and B. Tollu. - Adaptive Significance of the Reoccupation Period of the Adelie Penguin / E. B. Spurr. - Interactions Between South Polar Skuas and Adelie Penguins / Dietland Müller-Schwarze and Christine Müller-Schwarze. - Comparative Feeding Ecology of the Giant Petrels Macronectes giganteus (Gmelin) and M. halli (Mathews) / G. W. Johnstone. - Feeding Methods in Seabirds: A Comparison of Polar and Tropical Nesting Communities in the Eastern Pacific Ocean / David G. Ainley. - Adaptations of Arctic Terns and Antarctic Terns Within Antarctic Ecosystems / D. F. Parmelee. - Distribution and Abundance of Seals in the Pack Ice of the Pacific Sector of the Southern Ocean / James R. Gilbert and Albert W. Erickson. - Adaptations of Weddell and Ringed Seals to Exploit the Polar Fast Ice Habitat in the Absence or Presence of Surface Predators / Ian Stirling. - Food Consumption of Seals in the Antarctic Pack Ice / Torger Øritsland. - The Leopard Seal (Hydrurga leptonyx) at Palmer Station, Antarctica / R. J. Hofman, R. A. Reichle, D. B. Siniff, and D. Müller-Schwarze. - Distribution of Toothed Whales in the Antarctic Ocean / Masaharu Nishiwaki. - Discussion. - Part V: The Structure and Function of Antarctic Freshwater Ecosystems. - Antarctic Freshwater Ecosystems: Review and Synthesis / Ronald B. Heywood. - Production and Periodicity of Antarctic Freshwater Phytoplankton / J. J. Light. - Studies on Some Saline Lakes of the Vestfold Hills, Antarctica / K. R. Kerry, D. R. Grace, R. Williams, and H. R. Burton. - Nitrogen and Phosphorus Availability to Plankton: and Benthic Communities in Lake Bonney, Southern Victoria Land, Antarctica / Robert C. Hoehn, Bruce C. Parker, Richard D. Fortner, Barron L. Weand, James A. Craft, Larry S. Lane, Robert W. Stavros, Harold G. Sugg, Jr., and Jeffrey T. Whitehurst. - Changes in Dissolved Organic Matter, Photosynthetic Production, and Microbial Community Composition in Lake Bonney, Southern Victoria Land, Antarctica / Bruce C. Parker, Robert C. Hoehn, Robert A. Paterson, James A. Craft, Larry S. Lane, Robert W. Stavros, Harold G. Sugg, Jr., Jeffrey T. Whitehurst, Richard D. Fortner, and Barron L. Weand. - Discussion. - Part VI: The Structure and Function of Antarctic Terrestrial Ecosystems. - Climatic Relationships in Antarctic and Northern Hemisphere Populations of a Cosmopolitan Moss, Bryum argenteum Hedw. / R. E. Longton and Marjorie A. Maclver. - The Growth of Mosses in Two Contrasting Communities in the Maritime Antarctic: Measurement and Pre , Includes some contributions in French

Note: CONTENTS Page Abstract Preface Conversion factors: U.S. customary to metric (SI) units of measurement Background Objectives Profiling system Approach Profiling method Data reduction and interpretation Results Conclusions Recommendations Literature cited Appendix A. Comparison of ground and aerial data

Note: CONTENTS Abstract Preface List of symbols Introduction I. Initiation of ice jams by partial surface obstructions A. Introductory remarks B. Experimental apparatus and procedure C. Dimensional analysis D. Presentation of results and discussion ΙΙ. Thickness of ice jams due to accumulation and transport of ice floes A. Introductory remarks B. Experimental apparatus and procedures C. Presentation of results E. Conclusion III. Compressive strength of floating fragmented ice covers A. Introductory remarks B. Experimental setup and procedure C. Presentation of results and discussion D. Conclusions Literature cited Appendix A: Experimental results on ice jam initiation Appendix B: Effect of surface tension on submergence velocity of ice floes Appendix C: Experimental results for ice jam thickness study Appendix D: Experimental results on compressive strength of fragmented ice cover

Note: CONTENTS Abstract Preface Conversion factors: US, customary to metric (SI) units of measurement Introduction Infrared camera Core samples State House State House Annex State Library Legislative Office Building Public Health Complex Highway Garage Fish and Game Offlces Supreme Court John O. Morton Building Department of Health and Welfare Laboratory Economics of roof reinsulation Conclusions and recommendations Literature cited

Note: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric units of measurements Introduction The freezing proeess Icing observations Geographical distribution of icing and contributing meteorological conditions Extreme icing conditions Extremes of icc accumulation Prediction of icing occurrences Prediction of icing intensity and rate Control methods Measurement of icing rate Conclusions and recommendations Literature cited Appendix A. Maps of icing occurrence and rate Appendix B. Data for computing ship icing rates Appendix C. Estimation of ice accumulation

Note: CONTENTS Page Abstract Preface Introduction Low slope roof problems and repair costs Protected membrane roofs and materials Installations of protected membrane roofs Performance evaluation Test program Effectiveness Thermal efficiency Heat balance Internal cooling due to rain Moisture absorption and thermal conductivity of insulations Durability and life expectancy Fire resistance Patent considerations Costs of roofs Design considerations Proposed specifications Conclusions and recommendations Literature cited

Note: Contents Introduction The discovery Age of the island Island visit Other islands of grounded ice Discussion Literature cited

Note: Contents Abstract Preface Summary Conversion factors: U.S. customary to SI metric units Introduction Typical methods of constructing ice bridges Current knowledge Test program Objectives Equipment Procedure Data General Specific ice sheets Test results Conclusions Recommendations Literature cited

Note: CONTENTS Introduction Experimental work SCR samples CAG samples CMS samples UAG samples SI samples Optical system Equipment Procedure Photographic work Large cracks and fissures Small damage to the surface Small damage to the buIk Results Damage as a function of the position x of the focal point; n(x) Damage as a function of the number of irradiations #; n(#) Damage as a function of crystallographic orientation ĉ; n (ĉ); p (ĉ) Damage as a function of surface structure Damage as a function of age A; n (A) Damage as a function of wavelength λ; p(λ) Systematic study of damage as a function of W, t, m and s; n(W, t, m, s) Analysis Fracture in ice Mechanisms for optically generated damage in transparent dielectrics Discussion of the results Summary and conclusions Literature cited

Note: CONTENTS Page Abstract Preface Introduction Definition of revegetation Definition of restoration Objectives Some revegetation considerations Site conditions Nutrient regime Plant adaptations Native species vs introduced species Methods Seedbed preparation Seeding methods Timing of seeding Seed mixes Fertilization Agronomic grasses and legumes Selection criteria Laboratory evaluation Field evaluation Effect of revegetation methods Site conditions Maintenance of herbaceous cover Introduced woody species Native species — succession Significance of disturbance Primary succession Secondary succession Herbaceous native species Selection Laboratory evaluation Field evaluation Effect of revegetation methods Woody native species Selection Laboratory evaluation Field evaluation Native species and agronomic species, in combination Recommendations for research Summary Bibliography Appendix: Species tested

Note: CONTENTS Abstract Preface Nomenclature Introduction Description of study Sample preparation Test equipment and procedure Discussion of results Stress-density relationship Stress-deformation relationship Summary and conclusions Microstructural examination of artifically compacted snow Analytical techniques Results and discussion Conclusions Literature cited Appendix: Photographs of oscilloscope traces

Note: CONTENTS Abstract Preface Introduction The protected membrane roof Winter construction considerations Construction costs Conclusion

Note: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric (SI) Units of measurement Introduction Test procedure Pavement types Deicing chemicals Description of tests Discussion Literature cited Appendix A: Test results Appendix B: Portland cement concrete materials data

Note: CONTENTS Page Abstract Preface Introduction Experimental Materials Apparatus Procedure Results Discussion PE solvent soak and swelling PE solvent soak and puncture Film puncture rate effect Bending orientation Comparative tables and graphs Puncture and temperature Bending and temperature Test result vs thickness and weight General considerations Conclusion and recommendations Literature cited Appendix Detailed data tables Denier explanation

Note: CONTENTS Abstract Preface Summary Conversion factors for U.S. customary and SI units Introduction Theory Examples Discussion Literature cited

Note: Contents Abstract Preface Summary Introduction Previous work Results Models for predicting thickness from ice freeboard Comparison between measured and predicted thicknesses Spectral behavior of measured and predicted profiles Comparisons of ice thickness using airborne laser profilometry Conclusions Literature cited Appendix A: Misgivings on isostatic imbalance as a mechanism for sea ice cracking

Note: Articles Introductory remarks on the transport problem W. S. Fyfe https://doi.org/10.1144/GSL.SP.1977.007.01.01 Model of hydrothermal ore genesis J. W. Elder https://doi.org/10.1144/GSL.SP.1977.007.01.02 Identification of ore-deposition environment from trace-element geochemistry of associated igneous host rocks J. A. Pearce and G. H. Gale https://doi.org/10.1144/GSL.SP.1977.007.01.03 Identification of the origin of oreforming solutions by the use of stable isotopes S. M. F. Sheppard https://doi.org/10.1144/GSL.SP.1977.007.01.04 Hydrogen and oxygen isotope evidence for sea-water-hydrothermal alteration and ore deposition, Troodos complex, Cyprus T. H. E. Heaton and S. M. F. Sheppard https://doi.org/10.1144/GSL.SP.1977.007.01.05 Hydrodynamic model for the origin of the ophiolitic cupriferous pyrite ore deposits of Cyprus E. T. C. Spooner https://doi.org/10.1144/GSL.SP.1977.007.01.06 Origin and emplacement of ophiolites I. G. Gass https://doi.org/10.1144/GSL.SP.1977.007.01.07 Hydrothermal alteration of the basaltic lavas of the Troodos Ophiolite Complex associated with the formation of the massive sulphide deposits G. Constantinou https://doi.org/10.1144/GSL.SP.1977.007.01.08 Rare-earth element evidence for the genesis of the metalliferous sediments of Troodos, Cyprus A. H. F. Robertson and A. J. Fleet https://doi.org/10.1144/GSL.SP.1977.007.01.09 Modern submarine hydrothermal mineralization: examples from Santorini and the Red Sea D. S. Cronan, P. A. Smith, and R. D. Bignell https://doi.org/10.1144/GSL.SP.1977.007.01.10 Mineralization at destructive plate boundaries: a brief review M. S. Garson and A. H. G. Mitchell https://doi.org/10.1144/GSL.SP.1977.007.01.11 Porphyry copper deposits J. P. Hunt https://doi.org/10.1144/GSL.SP.1977.007.01.12 Metallic mineralization affiliated to subaerial volcanism: a review R. H. Sillitoe https://doi.org/10.1144/GSL.SP.1977.007.01.13 Igneous geology and the evolution of hydrothermal systems in some sub-volcanic tin deposits of Bolivia J. N. Grant, C. Halls, W. Avila, and G. Avila https://doi.org/10.1144/GSL.SP.1977.007.01.14 Occurrence, origin and significance of mechanically transported sulphide ores at Buchans, Newfoundland J. G. Thurlow https://doi.org/10.1144/GSL.SP.1977.007.01.15 Geological setting of the Skorovas orebody within the allochthonous volcanic stratigraphy of the Gjersvik Nappe, central Norway C. Halls, A. Reinsbakken, I. Ferriday, A. Haugen, and A. Rankin https://doi.org/10.1144/GSL.SP.1977.007.01.16 The Planes-San Antonio pyritic deposit of Rio Tinto, Spain: its nature, environment and genesis D. Williams, R. L. Stanton, and F. Rambaud https://doi.org/10.1144/GSL.SP.1977.007.01.17 Kuroko deposits: their geology, geochemistry and origin Takeo Sato https://doi.org/10.1144/GSL.SP.1977.007.01.18 Stable isotope studies on Bougainville and in Matupi Harbour, New Britain, Papua New Guinea J. H. Ford, D. C. Green, J. R. Hulston, I. H. Crick, and S. M. F. Sheppard https://doi.org/10.1144/GSL.SP.1977.007.01.19 Volcanogenic mineralization at Avoca, Co. Wicklow, Ireland, and its regional implications J. W. Platt https://doi.org/10.1144/GSL.SP.1977.007.01.20 Discussion https://doi.org/10.1144/GSL.SP.1977.007.01.21

Note: CONTENTS Abstract Preface Nomenclature Summary Introduction Problem General review of the subject Experimental apparatus General considerations Water reservoir Test chamber assembly Pumping system Electrical control system Experimental procedure Experimental results Discussion and comparison of results Conclusions Literature cited

Note: CONTENTS Abstract Preface Conversion factors: U.S. customary to metric units of measurement Introduction Impulse radar system Results and discussion Conclusions and recommendations Literature cited ILLUSTRATIONS Figure Relative locations where impulse radar measurements were made andsamples for moisture determinations were obtained on the CRREL roof Impulse radar signal reflected from metal sheet resting on roof Impulse radar signal reflection from roof at station A Impulse radar surface reflection coefficient versus moisture contentofroof Impulse radar signal reflection from aluminum foil on bottom of con-crete form and from aluminum sheet metal resting on top of form Unconfined compressive strength of concrete versus time Examples of X-Y plots of impulse radar signals obtained during thesounding of concrete slab Impulse radar signal reflection coefficients versus time for acuring concrete slab Calculated impulse radar signal attenuation in concrete slab versuselapsed time Dielectric constants versus time calculated from impulse radar signalInformation obtained during curing of concrete slab Unconfined compressive strength of concrete versus corrected reflec-tion coefficient calculated from impulse radar signal data obtainedduring the curing of concrete slab TABLES Comparison of roof moisture content with radar surface reflection coefficient and dielectric constant

Note: CONTENTS Abstract Preface Introduction Experimental procedure Snow collection Spectrophotometric methods Data analysis Potential sources of error Presentation of results Continuous-scan measurements Comparison of sequential bandpass and continuous-scan measurements Theoretical calculations Discussion of results Differences in amplitude of reflectance measurements Irregularities in the shape of spectral reflectance curves The true spectral reflectance of snow in the ultraviolet region Conclusions Literature cited Appendix A. Absolute reflectance values of pressed BaSO4 powder

Note: CONTENTS Abstract Preface Foreword Introduction Terminology Forces on individual cutters Torque force and tool force Forces on the rotor axis Tractive thrust and down thrust Alternative tool force formulations Vehicle traction Power/weight ratio Weight and balance Force, torque, speed and power Specific energy Efficiency and performance index Power density Power requirements for ejection of cuttings Hydrodynamic resistance in underwater cutting

Note: CONTENTS Abstract Preface Introduction Theory Limiting span of an arch Flow of pack ice through converging channels Stoppage of flow Applications St. Lawrence Amundsen Gulf Bering Strait Conclusion References

Note: CONTENTS Abstract Preface Foreword Introduction Terminology Principles of cutting Forces acting on a single cutter Theoretical Ideas on cutting Experimental data on cutting forces Effect of chipping depth on tool forces Effect of rake angle on tool forces Effect of relief angle on cutting forces Effect of side rake on tool forces Effect of base angle or face profile on tool forces Effect of rounding at the cutting edge Effect of tool width on cutting forces Tool compliance and force fluctuations Effect of tool speed on cutting forces Effect of rock properties on cutting forces Tool interaction and kerf spacing Effect of multiple pass cutting on tool forces Effect of tool wear on cutting forces Development of wear Energetics of cutting Energetics of parallel-motion tools Variation of specific energy with chipping depth for a single tool Effect of rake angle on specific energy Effect of relief angle on specific energy Effect of side rake on specific energy Effect of base angle or face profile on specific energy Effect of tip radius on specific energy Effect of tool width on specific energy Effect of tool speed on specific energy Variation of specific energy with rock properties Effect of kerf spacing on specific energy Effect of multiple pass cutting on specific energy Effect of tool wear on specific energy General summary Literature cited Appendix Α. Additional data for ice Appendix Β. Conversion factors: U.S. customary and metric units of measurement

Note: CONTENTS Abstract Preface Introduction Sea ice characteristics Ridging intensity Arctic terrain characteristics databank Digital terrain maps Digital laser profiles Standard terrain tapes Mobility analysis Terrestrial and coastal characteristics Northern Alaska Interior Alaska Arctic USSR Northern Canada and Greenland Climatological characteristics General features Surface winds Temperatures Precipitation and visibility Electromagnetic/optical propagation Ecological effects of SEV operations SK-5 tests Simulated SEV tests Conclusions Literature cited Additional CRREL SEV Bibliography

Note: Contents Abstract Preface Conversion factors for U.S. customary and SI units Introduction Access within the Caribou-Poker Creeks Research Watershed Trail access Helicopter access Road access Alternative approaches Long-term recorders Telemetry systems Remote sensing Relative costs A desirable system Selected bibliography

Note: CONTENTS Abstract Preface Summary Foreword Terminology Trajectories of fixed tools Trajectories of roller cutters and indenters Speed of fixed cutting tools Speed of rolling disc cutters Speed and geometry of "wide" roller cutters Skidding rollers "Spiked" rollers Epicyclic or planetary mechanisms Chipping depth and penetration rate Chip production and cutting removal rate Balancing cutting and clearing rates in flight augers Tool relief angles - kinematic considerations Tool rake angles Distribution and spacing of cutting tools Radial tool spacing Angular tool spacing Spacing in the axial direction Literature cited

Note: CONTENTS Page Abstract Preface Conversion factors for U.S.customary and SI units Introduction Materials, instruments, measurements Experiments with water freezing in fine pores Freezing experiments with bulk water Summary and conclusions Literature cited

Note: Contents Abstract Preface Summary Nomenclature Introduction Analysis Melting period Freezing period Calculation Conclusion Literature cited Appendix A: Justification of using eq 8 for the calculation of heat transfer coefficient h

Note: CONTENTS Abstract Preface Summary Introduction Climate Site selection Instrumentation, measurements and calibration Installation of automatic water temperature recording system Visual observations and ice structure St. Albans Shelburne Analysis Temperature comparison Water temperature measuring system Changes in water temperature Wind Degree-days of freezing Prediction of ice formation Bubbler system Conclusions Recommendations Literature cited

Note: Contents Abstract Preface Summary Foreword Introduction Terminology Chipping depth Production and conveyance of cuttings Tool trajectories Tool speeds Tool relief angles — kinematic considerations Tool rake angles Belt curvature, slackness and flexibility Tool layout Longitudinal tool spacing Transverse tool spacing Cross-section profiles of the kerf Literature cited

Note: CONTENTS Page Abstract Preface Summary Nomenclature Introduction Water movement through snow Vertical percolation Lateral flow Flat roofs Sloping roofs Rainfall intensity-duration effects Miscellaneous effects Radial flow to drains Flow along gutters on snow-covered roofs Snow structure Basal layer Conclusion Literature citied Appendix A. Computer program calculating roof loads from rain-on-snow

Note: CONTENTS Abstract Preface Summary Introduction Ice thickness and quantity Chronology of the 1975 Chena River breakup Checkpoint 3 Checkpoint 4 Checkpoint 5 Checkpoint 6 Checkpoint A Checkpoint 7 Checkpoint C Checkpoint D Checkpoint 8 Checkpoint 10 Checkpoint 11 Checkpoint 12 Spring flooding and debris The 1976 Chena River breakup Breakup in other years Summary and conclusions Appendix A. Sequential photographs of 1975 breakup at checkpoints 3-12

Note: CONTENTS Abstract Preface Nomenclature Conversion factors: U.S. customary to metric units of measurement Introduction Description of experiment Apparatus Test procedure Experimental results Summary of experimental tests Influence of coolant water flow rates Approximation of the rate of melting Comparison of experimental and computed results Comparative analysis of the model sinks Approximation of the heat transfer coefficient Conclusions and recommendations Literature cited Appendix A. Experimental data, heat sink Model II Appendix B. Heat sink scaling and similarity relationships Appendix C. Derivation of the relationships for the heat transfer coefficient, Reynolds and Nusselt numbers Appendix D. Determination of freezing rates and refrigeration loads Appendix E. Approximation of stresses in the heat sink tank

Note: CONTENTS Abstract Preface Conversion factors: U.S.customary to metric (SI) units of measurement Introduction Location of test sites Fairbanks Anchorage Hanover, N.H. Test program Instrumentation Effectiveness Therma lefficiency Heat balance within the roof Comparisons with conventional systems Conclusions Effectiveness of the test roof Thermal efficiency Heat balance within the roof Applicability Recommendations Literature cited Appendix A. Temperature and heat flow measurements, Anchorage and Fairbanks, Alaska, and Hanover, New Hampshire Appendix B. Thermal efficiencies of the test roof, Anchorage and Fairbanks, Alaska, and Hanover, New Hampshire Appendix C. January 1973 and August 1972 comparisons of protected membrane and conventional built-up membrane systems at Hanover, New Hampshire

Note: CONTENTS Abstract Preface Introduction Sampling and analytical procedures Results Discussion Conclusions Literature cited

Note: CONTENTS Abstract Preface List of symbols Summary Introduction Recent ice research in Denmark General Structures with vertical faces Wedges with inclined faces Recording of the strength of natural ice Artificial ice — properties and manufacture General Composition of material Order of mixing ingredients Rupture theory Theoretical approach Initial contact Forces acting on wedge Maximum force and actual force Principal stress equations 8Dynamic equations Intermittent nature of force Theoretical curve Verifiction of theory by model tests Description Width of rupture channel Plotting of results Engineering application Comparison with Korahavin’s results Recommendations for future research References Appendix A

Note: Contents Abstract Preface Introduction Test site Pile driving equipment Test instrumentation Testing procedures Pile driving data Pile type vs driving resistance Closed-end vs open-end piles Calculated bearing capacity of pile Effect of pile driving on the embedment medium Pile inclination Slurried-in-place piles Pile load test data Strain gage instrumentation and results Pile excavation Discussion and conclusions Literature cited Appendix A: Theoretical elastic deflection of piles supported by skin friction Appendix B: Trench floor arching study