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It is more than half a century since the publication of R. A. Bagnold’s classic book The physics of blown sand and desert dunes, and it is a tribute to the quality of Bagnold’s work that many of the fundamental principles which he developed - main valid today. His book continues to be essential reading for any serious s- dent of aeolian processes. However, the past two decades have seen an explosion in the scale of research dealing with aeolian transport processes, sediments, and landforms. Some of this work has been summarized in review papers and edited conference proceedings, but this book provides the rst attempt to review the whole eld of aeolian sand research. Inevitably, it has not been possible to cover all - pects in equal depth, and the balance of included material naturally re ects the - thors’ own interests to a signi cant degree. However, our aim has been to provide as broad a perspective as possible, and to provide an entry point to an extensive mul- disciplinary scienti c literature, some of which has not been given the attention it deserves in earlier textbooks and review papers. Many examples are drawn from existing published work, but the book also makes extensive use of our own research in the Middle East, Australia, Europe, and North America. The book has been written principally for use by advanced undergraduates, po- graduates, and more senior research workers in geomorphology and sedimentology.
Ever wonder where sand comes from? Or why shells are colored differently? Or how to estimate the size of a wave? Featuring more than forty fun hands-on activities for families with children, Lessons from the Sand reveals the science behind the amazing natural wonders found on the beaches of North Carolina and South Carolina. Easy-to-do experiments will help parents and kids discover the ways water, wind, sand, plants, animals, and people interact to shape the constantly changing beaches we love to visit. Featuring colorful illustrations and clear instructions, most activities require nothing more than an observant eye and simple tools found at local stores. You will learn about geology, weather, waves and currents, the critters that live on our beaches, and the environmental issues that threaten them. Chapters also include indoor activities for rainy days and activities for nighttime discovery. This book will become an indispensable companion for families, teachers, and students heading to the Carolina coast for years to come.
The content of this book spans the four major divisions of ocean science--geology, chemistry, physics, and biology--while maintaining the conversational voice for which it is acclaimed. This new edition includes new content on oceanographic research, oceanographic exploration, pacific ocean circulation, and the deep-sea bottom, as well as numerous updated and expanded feature boxes.
With this indispensable guide to Wiccan visualisation and pathworking, readers cn begin a journey to personal transformation. Teaching practitioners how to use creative visualisation to develop the senses, increase psychic awareness and promote both inner and outer change, this book also covers trances, creating inner safe places', and seeking signs from higher realms. For anyone who has ever asked questions like 'What is my role in life?' or 'How do I contribute to the world?', they will find answers here, and they may find a whole lot more.'
How desert dunes are formed, how they change, their environmental significance and the role of climate change - these issues are examined through extensive case studies drawn from South Africa, India, Northern Europe and Australia.
Sand dune dynamics play a key role in many arid deserts. This volume provides a thorough analysis of a specific sand dune ecosystem, the Nizzana site in the Middle East’s Negev Desert. Describing its climate, as well as its geophysical/geochemical soil properties and ecology, this brilliant work draws out the relationships between the site’s ecological and geomorphological processes, based on long-term monitoring, in situ experiments and satellite imagery.