While the British were able to accomplish abolition in the trans-Atlantic world by the end of the nineteenth century, their efforts paradoxically caused a great increase in legal and illegal slave ...trading in the western Indian Ocean. Bringing together essays from leading authorities in the field of slavery studies, this comprehensive work offers an original and creative study of slavery and abolition in the Indian Ocean world during this period. Among the topics discussed are the relationship between British imperialism and slavery; Islamic law and slavery; and the bureaucracy of slave trading.
Over the centuries, processing and distribution of products from land and sea has stimulated the growth of a global economy. In the broad sweep of world history, it may be hard to imagine a place for ...the meager little herring baitfish. Yet, as Brian Payne adeptly recounts, the baitfish trade was hotly contested in the Anglo-American world throughout the nineteenth century. Politicians called for wars, navies were dispatched with guns at the ready, vessels were seized at sea, and violence erupted at sea.Yet, the battle over baitfish was not simply a diplomatic or political affair. Fishermen from hundreds of villages along the coastline of Atlantic Canada and New England played essential roles in the construction of legal authority that granted or denied access to these profitable bait fisheries.Fishing a Borderless Seaillustrates how everyday laborers created a complex system of environmental stewardship that enabled them to control the local resources while also allowing them access into the larger global economy.
While the term culture wars often designates the heated arguments in the English-speaking world spiraling around race, the canon, and affirmative action, in fact these discussions have raged in ...diverse sites and languages. Race in Translation charts the transatlantic traffic of the debates within and between three zones - the U.S., France, and Brazil. Stam and Shohat trace the literal and figurative translation of these multidirectional intellectual debates, seen most recently in the emergence of postcolonial studies in France, and whiteness studies in Brazil. The authors also interrogate an ironic convergence whereby rightist politicians like Sarkozy and Cameron join hands with some leftist intellectuals like Benn Michaels, iek, and Bourdieu in condemning multiculturalism and identity politics. At once a report from various fronts in the culture wars, a mapping of the germane literatures, and an argument about methods of reading the cross-border movement of ideas, the book constitutes a major contribution to our understanding of the Diasporic and the Transnational.
Cargoes in Motion Verne, Julia; Schnepel, Burkhard
2022, 2022-02-08
eBook
An innovative collection of essays that foregrounds specific cargoes as a means to understand connectivity and mobility across the Indian Ocean world.
Scholars have long appreciated the centrality of ...trade and commerce in understanding the connectivity and mobility that underpin human experience in the Indian Ocean region. But studies of merchant and commercial activities have paid little attention to the role that cargoes have played in connecting the disparate parts of this vast oceanic world. Drawing from the work of anthropologists, geographers, and historians, Cargoes in Motion tells the story of how material objects have informed and continue to shape processes of exchange across the Indian Ocean.
By following selected cargoes through both space and time, this book makes an important and innovative contribution to Indian Ocean studies. The multidisciplinary approach deepens our understanding of the nature and dynamics of the Indian Ocean world by showing how transoceanic connectivity has been driven not only by economic, social, cultural, and political factors but also by the materiality of the objects themselves.
Essays by:
Edward A. Alpers
Fahad Ahmad Bishara
Eva-Maria Knoll
Karl-Heinz Kohl
Lisa Jenny Krieg
Pedro Machado
Rupert Neuhöfer
Mareike Pampus
Hannah Pilgrim
Burkhard Schnepel
Hanne Schönig
Tansen Sen
Steven Serels
Julia Verne
Kunbing Xiao
Ocean optics is a branch of oceanography which is firmly embedded in studies of a great variety of ocean science and engineering questions. The interactive nature between radiative transfer of light ...and various dissolved and particulate constituents of seawater is at the core of ocean optics science and applications. The transfer of radiant solar energy has vital implications to life and climate on Earth, and the large variety of subjects of ocean optics ranges from the subtle problems of physical optics to optical remote sensing towards a better understanding of ocean biology, biogeochemistry and ecosystems and their roles in the Earth's system processes. The intention of this book is to present a collection of papers that generally share a common denominator of frontier topics in ocean optics which are unique, uncommon or outstanding in the literature, and to provide a balanced view of the extraordinary breadth of research in this field. Topics as diverse as measurements and modeling of radiative transfer, light fields, light scattering and polarization, ocean color, benthic optical properties, and the use of optics for characterizing seawater constituents are addressed in this book. The book is expected to be of interest and useful to a broad audience of professional ocean scientists, engineers and advanced students with an interest in ocean optics and applications of optical methods in oceanography.
The identity of longnose skates (Dipturus-Zearaja-like skates) in the southern cone of the Americas has been a topic of extensive debate. This study employs a comprehensive analysis encompassing ...morphometrics, claspers, and the examination of COI and NADH2 sequence data to conclusively demonstrate the existence of only two longnose skate species in the southwestern Atlantic Ocean, extending south of 35 °S. Notably, Dipturus argentinensis Díaz de Astarloa, Mabragaña, Hanner and Figueroa, 2008 is revealed as a junior synonym of D. trachyderma (Krefft and Stehmann, 1975). Dipturus leptocaudus (Krefft and Stehmann, 1975) remains a northern valid species, but the specimen from the Falkland Islands (Malvinas) is recognized as a misidentification of D. trachyderma. Zearaja flavirostris (Philippi, 1892) and Dipturus lamillai Concha, Caira, Ebert and Pompert, 2019 are confirmed as junior synonyms of Zearaja brevicaudata (Marini, 1933). These findings contradict the previous report of six species within the same region over the last decade and underscore the presence of D. trachyderma and Z. brevicaudata south of 35 °S in the southwestern Atlantic. Additionally, this study notes the occurrence of only one specimen of Z. chilensis (Guichenot, 1848) in the Falkland Islands (Malvinas), suggesting an unusual frequency of this eastern Pacific skate in the southern Southwest Atlantic. Given that clasper morphology serves as the key distinguishing trait between Dipturus and Zearaja species, we provided a detailed analysis of the clasper characteristics of the Atlantic D. trachyderma, unequivocally situating it within Dipturus. The diagnostic characteristics include: (i) the presence of cartilage with the distal portion referred to as the sentinel, a feature absent in Zearaja; (ii) longer ventral terminal cartilage with the distal end referred to as the funnel, compared to Zearaja; and (iii) a non-spatulate distal lobe, a distinctive trait specific to Dipturus.
The GEOTRACES Intermediate Data Product 2017 (IDP2017) is the second publicly available data product of the international GEOTRACES programme, and contains data measured and quality controlled before ...the end of 2016. The IDP2017 includes data from the Atlantic, Pacific, Arctic, Southern and Indian oceans, with about twice the data volume of the previous IDP2014. For the first time, the IDP2017 contains data for a large suite of biogeochemical parameters as well as aerosol and rain data characterising atmospheric trace element and isotope (TEI) sources. The TEI data in the IDP2017 are quality controlled by careful assessment of intercalibration results and multi-laboratory data comparisons at crossover stations. The IDP2017 consists of two parts: (1) a compilation of digital data for more than 450 TEIs as well as standard hydrographic parameters, and (2) the eGEOTRACES Electronic Atlas providing an on-line atlas that includes more than 590 section plots and 130 animated 3D scenes. The digital data are provided in several formats, including ASCII, Excel spreadsheet, netCDF, and Ocean Data View collection. Users can download the full data packages or make their own custom selections with a new on-line data extraction service. In addition to the actual data values, the IDP2017 also contains data quality flags and 1-σ data error values where available. Quality flags and error values are useful for data filtering and for statistical analysis. Metadata about data originators, analytical methods and original publications related to the data are linked in an easily accessible way. The eGEOTRACES Electronic Atlas is the visual representation of the IDP2017 as section plots and rotating 3D scenes. The basin-wide 3D scenes combine data from many cruises and provide quick overviews of large-scale tracer distributions. These 3D scenes provide geographical and bathymetric context that is crucial for the interpretation and assessment of tracer plumes near ocean margins or along ridges. The IDP2017 is the result of a truly international effort involving 326 researchers from 25 countries. This publication provides the critical reference for unpublished data, as well as for studies that make use of a large cross-section of data from the IDP2017.
This article is part of a special issue entitled: "Cycles of trace elements and isotopes in the ocean – GEOTRACES and beyond" - edited by Tim M. Conway, Tristan Horner, Yves Plancherel, and Aridane G. González.
Crystal mush is rapidly emerging as a new paradigm for the evolution of igneous systems. Mid-ocean ridges provide a unique opportunity to study mush processes: geophysical data indicate that, even at ...the most magmatically robust fast-spreading ridges, the magma plumbing system typically comprises crystal mush. In this paper, we describe some of the consequences of crystal mush for the evolution of the mid-ocean ridge magmatic system. One of these is that melt migration by porous flow plays an important role, in addition to rapid, channelized flow. Facilitated by both buoyancy and (deformation-enhanced) compaction, porous flow leads to reactions between the mush and migrating melts. Reactions between melt and the surrounding crystal framework are also likely to occur upon emplacement of primitive melts into the mush. Furthermore, replenishment facilitates mixing between the replenishing melt and interstitial melts of the mush. Hence, crystal mushes facilitate reaction and mixing, which leads to significant homogenization, and which may account for the geochemical systematics of mid-ocean ridge basalt (MORB). A second consequence is cryptic fractionation. At mid-ocean ridges, a plagioclase framework may already have formed when clinopyroxene saturates. As a result, clinopyroxene phenocrysts are rare, despite the fact that the vast majority of MORB records clinopyroxene fractionation. Hence, melts extracted from crystal mush may show a cryptic fractionation signature. Another consequence of a mush-dominated plumbing system is that channelized flow of melts through the crystal mush leads to the occurrence of vertical magmatic fabrics in oceanic gabbros, as well as the entrainment of diverse populations of phenocrysts. Overall, we conclude that the occurrence of crystal mush has a number of fundamental implications for the behaviour and evolution of magmatic systems, and that mid-ocean ridges can serve as a useful template for trans-crustal mush columns elsewhere. This article is part of the Theo Murphy meeting issue 'Magma reservoir architecture and dynamics'.
PDF
