Stefano Lanzoni's Books

Theoretical Morphodynamics: River Meandering

By: Giovanni Seminara ,Stefano Lanzoni ,Nicoletta Tambroni

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Theoretical Morphodynamics: River Meandering

By: Giovanni Seminara ,Stefano Lanzoni ,Nicoletta Tambroni

This monograph discusses the mechanics of Meandering Rivers with the help of the mathematical and modeling tools built up in the previous monograph of the same Authors (monograph 1 of the present series). After introducing the reader to the ubiquitous character of meandering streams, we discuss the hydrodynamics of curved channels with fixed beds and banks. Next, we extend the analysis to account for the mobile character of the bed and show that it gives rise to the alternate sequence of riffles and pools that characterize river meanders. Allowing for the erodible character of the river banks then allows to build up a rational theory of meander formation able to explain most of the features observed in nature: meander growth, migration, skewing, multiple loops, cutoffs and meander belts.

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Page Count

260

Publisher

Firenze University Press

Published Date

ISBN 13

9791221503029

Theoretical Morphodynamics: Straight Channels

By: Giovanni Seminara,Stefano Lanzoni,Nicoletta Tambroni

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Theoretical Morphodynamics: Straight Channels

By: Giovanni Seminara,Stefano Lanzoni,Nicoletta Tambroni

This monograph presents the mechanistic foundations of the theory of Morhodynamics, a discipline that investigates the shape of the erodible boundary of natural water bodies. We focus on the fluvial Morphodynamics of straight erodible channels, providing the basis for subsequent extensions to meandering rivers (treated in the companion monograph 2 of this series) and braided rivers. We present basic notions on the Mechanics of Turbulent Flows and Sediment Transport in straight open channels with mobile beds. We then investigate their morphodynamic equilibrium and its instability, that leads to the formation of a variety of bedforms observed in natural rivers. In particular, fluvial bars will deserve special attention as the fundamental building block of large scale fluvial patterns.

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Page Count

380

Publisher

Firenze University Press

Published Date

ISBN 13

9791221502121

Julian the Apostate in Byzantine Culture

By: Stefano Trovato

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Julian the Apostate in Byzantine Culture

By: Stefano Trovato

Julian, the last pagan emperor of the Roman empire, died in war in 363. In the Byzantine (that is, the Eastern Roman) empire, the figure of Julian aroused conflicting reactions: antipathy towards his apostasy but also admiration for his accomplishments, particularly as an author writing in Greek. Julian died young, and his attempt to reinstate paganism was a failure, but, paradoxically, his brief and unsuccessful policy resonated for centuries. This book analyses Julian from the perspectives of Byzantine Culture. The history of his posthumous reputation reveals differences in cultural perspectives and it is most intriguing with regard to the Eastern Roman empire which survived for almost a millennium after the fall of the Western empire. Byzantine culture viewed Julian in multiple ways, first as the legitimate emperor of the enduring Roman empire; second as the author of works written in Greek and handed down for generations in the language that scholars, the Church, and the state administration all continued to use; and third as an open enemy of Christianity. Julian the Apostate in Byzantine Culture will appeal to both researchers and students of Byzantine perspectives on Julian, Greco-Roman Paganism, and the Later Roman Empire, as well as those interested in Byzantine Historiography.

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