Paul A. Carling – Författare

Developments in the modelling of sediment transport in rivers and the interactions with the river-bed have been remarkable over the last two decades. This progress has increased the understanding of the nature of turbulence, and the ability to replicate mathematically simple flow-particle interactions which can be observed experimentally. In addition, quite elegant models of stratigraphic complexes have evolved because of the growing computational power available to scientists. As always, additional knowledge has raised even more intriguing questions and the quest for explanation of phenomena has led to increased specialisation. Therefore, there are few fluid dynamicists or sedimentologists who can successfully span the two disciplines. The intention of this book is to assist various specialists on keeping abreast of current developments in related areas. The book initially focuses on hydrodynamics of turbulent flow, followed by basic two and three-dimensional flow through straight and curved channels and the flow over bed topography. This is then followed by a consideration of initial motion, sediment transport and particle sorting. The potential for modelling fluidsediment interactions is provided at the end of the first section. Linking chapters then follow, considering the preservation potential of fluvial bedforms in the stratigraphic record and the basic variety of channel morphology recognised in sedimentary studies. Subsequent chapters consider reconstructing hydraulic process and fluvial morphology from stratigraphy; the influence of bedform and depositional controls on packing of economically important sedimentary rocks; and recent advances in modelling subsurface fluvial stratigraphy. A final chapter provides a brief view of future perspectives. The objective of this volume is to review recent advances made by geologists and hydrodynamicists in an accessible manner and to promote an increased and fruitful dialogue between sedimentary geologists, geomorphologists and hydrodynamicists.

Megaflooding is the sudden discharge of exceptional volumes of water. Megafloods have significantly altered the terrain of Earth and Mars, and may have acted as triggers for climate change on these planets. Recently, research into megaflooding has made important advances: on Earth, real-time measurements of contemporary floods in Iceland complement research into older and larger terrestrial floods, while on Mars terabytes of data from several spacecraft orbiting that planet are dramatically revising our view of flooding there. Beginning with a historical overview of flood science, the book presents sections on morphology and mechanisms, flood sedimentology, and modelling, each illustrated with examples from Earth and Mars. By juxtaposing terrestrial and Martian research, this volume creates a unique synthesis to further our understanding of these enormous paleoflood events. It is an invaluable reference for researchers and students of hydrology, geomorphology, sedimentology and planetary science, as well as environmental and hydraulic engineers.