In On Both Sides of the Strait of Gibraltar Julio Samsó shows that astronomical sources, written in al-Andalus, the Maghrib and the Iberian Peninsula, belong to the same tradition and emphasizes the role of al-Andalus and the Iberian Peninsula in the transmission of Islamic astronomy to medieval Europe.

Clive Finlayson, a native of the Rock and a trained ornithologist, presents a fascinating account of this region and its resident and transitory bird life. The Strait of Gibraltar is famous as a major point of passage for Palaearctic birds migrating between their European breeding grounds and their winter quarters in Africa. The first chapter of the book describes the area, which broadly defined includes the Coto Donana in the north and the Merja Zerga in the south, and the geographic and climatological characteristics which make it a suitable crossing place. In scope this book goes beyond the strict definition of the Strait and, following Irby's 19th Century work, examines the rich area where Europe meets Africa. The chapters which follow describe in detail the migration patterns of the principal passage species including their origins, destinations and overall numbers, showing how the precise conditions of weather and visibility affect the specific choice of route and timing of the crossing. The breeding and wintering bird communities are then considered and the ornithology of the entire region summarized. Whether or not you have ever witnessed the thousands of raptors, storks and other birds that may make this legendary crossing in a single day, this book will conjure the spirit of this extraordinary place. Delightful illustrations by lan Willis complete an important and entertaining book.

Suppose one were given the task of mapping the general circulation in an unfamiliar ocean. The ocean, like our own, is subdivided into basins and marginal seas interconnected by sea straits. Assuming a limited budget for this undertaking, one would do well to choose the straits as observational starting points. To begin with, the currents flowing from one basin to the next, over possibly wide and time-varying paths, are confined to narrow and stable routes within the straits. Mass, heat and chemical budgets for individual basins can be formulated in terms of the fluxes measured across the straits using a relatively small number of instruments. The confinement of the flow by a strait can also give rise to profound dynamical conse quences including choking or hydraulic control, a process similar to that by which a dam regulates the flow from a reservoir. The funneling geometry can lead to enhanced tidal modulation and increased velocities, giving rise to local instabilities, mixing, internal bores, jumps, and other striking hydraulic and fine scale phenomena. In short, sea straits repre sent choke points which are observationally and dynamically strategic and which contain a full range of fascinating physical processes.

In the mid-nineteenth century, as European navies learned to neutralize piracy, new patterns of circulation and settlement became possible in the western Mediterranean. The Deepest Border tells the story of how a borderland society formed around the Strait of Gibraltar, bringing historical perspective to one of the contemporary world's critical border zones. Drawing on primary and secondary research from Spain, France, Gibraltar, and Morocco—including military intelligence files, public health reports, consular correspondence, and travel diaries—Sasha D. Pack draws out parallels and connections often invisible to national and mono-imperial histories. In conceptualizing the Strait of Gibraltar region as a borderland, Pack reconsiders a number of the region's major tensions and conflicts, including the Rif Rebellion, the Spanish Civil War, the European phase of World War II, the colonization and decolonization of Morocco, and the ongoing controversies over the exclaves of Gibraltar, Ceuta, and Melilla. Integrating these threads into a long history of the region, The Deepest Border speaks to broad questions about how sovereignty operates on the "periphery," how borders are constructed and maintained, and the enduring legacies of imperialism and colonialism.

Hydrodynamics of Semi-Enclosed Seas

Contemporary life is caught in prisons of identity. Public, academic, and political discourses do not seem to be possible without circling around the topos of identity, thereby creating an illusion of uniqueness, separation, difference, and conflict. By studying the relationship between the Moroccan city of Tangiers and the British overseas territory of Gibraltar, Dieter Haller shows how cross-boundary experiences, practices, and identifications create a sense of neighborhood beyond official discourses. Across the Straits of Gibraltar, local and regional relationships in different fields such as kinship, economy, and culture provide resources for post-Brexit common action and a future beyond the prison of identity.