The main aim of this thesis is to characterise the strength and stiffness of alpine frozen soil in rock glaciers. To this end, the geotechnical response, such as creep and failure of frozen soil was investigated through a triaxial stress path testing programme with novel measurement systems for detecting acoustic emissions and measuring volumetric change. In addition, the resistance to crack initiation and propagation was investigated through a beam bending test programme on rectangular artificially frozen soil specimens, using the acoustic emission measurement system.
The evaluation of laboratory tests on artificially frozen soil specimens implied that the development of deep depressions in rock glaciers occurs through differential creep and thermal degradation, and that the rate of deformation has the potential to lead to instabilities in rock glaciers.
A comparison of the simulation results with the experimental data demonstrated that the semi-coupled model was successful in simulating the most important aspects of the temperature-dependent stress-strain relationship for the frozen soil behaviour that was measured at the element scale.
This thesis contributes to an understanding of the variations in geotechnical response of alpine permafrost, by investigating the behaviour of artificially frozen soil specimens experimentally and numerically with time and temperature under specific stress paths. However, further investigations are necessary to assess the long-term stability of rock glaciers affected by climate change.
Don’t worry it’s never too late to find out about what makes the weather tick.
And there’s never been an easier or more enjoyable way to learn than Weather For Dummies. In know time, you’ll know enough of weather basics to be able to:Identify cloud types Make sense of seasonal differences in the weather Understand what causes hurricanes, tornadoes, and other extreme events Make your own weather forecasts Avoid danger during severe weather Understand the global warming debate Get a handle on smog, the greenhouse effect, El Niño, and more
Award-winning science writer John D. Cox brings the science of meteorology down to earth and, with the help of dozens of cool maps and charts and stunning photographs of weather conditions, he covers a wide range of fascinating subjects, including:What is weather and how it fits into the entire global ecosystem What goes into making a professional daily weather forecast The basic elements of weather, including air pressure, clouds, and humidity Storms, hurricanes, tornadoes, monsoons, and other extreme forms of weather Seasonal weather effects and why they vary Lightening, rainbows, sundogs, haloes, and other special effects
Featuring clear explanations, stunning illustrations, and fun, easy experiments and activities you can do at home , Weather For Dummies is your guide to making sense of the baffling turmoil of the ever-changing skies above.
This richly illustrated book collects and explores the colorful histories behind a striking range of real antique maps that are all in some way a little too good to be true.
Mysteries within ancient maps: The Phantom Atlas is a guide to the world not as it is, but as it was imagined to be. It's a world of ghost islands, invisible mountain ranges, mythical civilizations, ship-wrecking beasts, and other fictitious features introduced on maps and atlases through mistakes, misunderstanding, fantasies, and outright lies.
Where exploration and mythology meet: Author Edward Brooke-Hitching is a map collector, author, writer for the popular BBC Television program QI and a Fellow of the Royal Geographical Society. He lives in a dusty heap of old maps and books in London investigating the places where exploration and mythology meet.
Cartography’s greatest phantoms: The Phantom Atlas uses gorgeous atlas images as springboards for tales of deranged buccaneers, seafaring monks, heroes, swindlers, and other amazing stories behind cartography's greatest phantoms.
If you are a fan of this popular genre and a reader of books such as Prisoners of Geography, Atlas of Ancient Rome, Atlas Obscura, What If, Book of General Ignorance, or Thing Explainer, your will love The Phantom Atlas