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  • Fisheries
  • Geophysics
  • Springer  (5)
  • 2000-2004  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of engineering geology and the environment 58 (2000), S. 125-132 
    ISSN: 1435-9537
    Keywords: Key words Sand ; Fill ; Geophysics ; Nigeria ; Coastal ; Reclamation ; Mots clés Sable ; Remblai ; Geophysique ; Nigeria ; Cótier ; Assainissement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Résumé Il est prévu d'aménager une région de la péninsule de Lekki, de l'État de Lagos. Ainsi, des études ont été entreprises afin de préciser une coupe géologique et géo-électrique des terrains superficiels: identifier les séries sableuses, déterminer leurs épaisseurs et préparer une carte des caractéristiques géomorphologiques du terrain original, avant remblaiement. Des sondages électriques verticaux et des essais au pénétromètre ont été réalisés sur un secteur sableux de la péninsule de Lekki. Les données obtenues ont montré une bonne corrélation entre les caractéristiques géomorphologiques issues de photo-interprétations et celles résultant de cartes établies à partir des résultats de prospection électrique et d'essais au pénétromètre.
    Notes: Abstract  It was hoped to develop an area of reclaimed land on the Lekki Peninsula of Lagos State. An investigation was therefore carried out in order to establish the subsurface geological/geo-electrical sequence; to identify the sand columns and determine their thickness and prepare a map of the geomorphological features of the original, pre-fill terrain. Vertical electrical resistivity soundings (VES) and penetrometer tests were carried out in a sand filled segment of the Lekki Peninsula. The information obtained showed a good correlation between the geomorphological features as interpreted from the aerial photographs and those identified from maps derived from the VES/penetrometer results.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Agriculture and human values 17 (2000), S. 125-139 
    ISSN: 1572-8366
    Keywords: Environment ; Fisheries ; Fordism ; Nation-State ; Regulation ; Supranational State ; Transnational corporations ; Transnational State
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract This analysis uses an analytical frameworkgrounded in political economy perspectives of theglobalization of the agro-food sector combined with acase study approach focusing on the Marine StewardshipCouncil (MSC) to inform discussions regarding thecharacteristics of societal regulation in thepost-Fordist era. More specifically, this analysisuses the case of the emergence of the MSC toinvestigate propositions regarding the existence of,and location of, nascent forms of a transnationalState. The MSC proposes to regulate the certificationof sustainable fisheries at the global level throughan eco-labeling program. The MSC was created in 1996by the transnational environmental organization theWorld Wildlife Fund and the transnational corporationUnilever. The emergence of the MSC has generatedheated discussion in fisheries management circles thatis in general divided along North/South lines. Thisanalysis indicates that the case of the MSC providesvaluable insights into the possible characteristics ofsupranational regulatory mechanisms that might emulatethe role of the nation-State in the post-Fordist era.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Surveys in geophysics 21 (2000), S. 423-448 
    ISSN: 1573-0956
    Keywords: Geophysics ; seismic ; electromagnetic ; geo-electric ; resistivity ; self-potential ; gravity ; boundary ; property ; slope stability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A pre-requisite in slope stability analyses is that the internal structure and the mechanical properties of the soil or rock mass of the slope, are known or can be estimated with a reasonable degree of certainty. Geophysical methods to determine the internal structure of a soil or rock mass may be used for this purpose. Various geophysical methods and their merits for slope stability analyses are discussed. Seismic methods are often the most suitable because the measurements depend on the mechanical properties that are also important in the mechanical calculation of slope stability analyses. Other geophysical methods, such as electromagnetic, electric resistivity, self-potential, and gravity methods, may be useful to determine the internal structure, but require a correlation of found boundaries with mechanical properties.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of engineering geology and the environment 59 (2000), S. 157-169 
    ISSN: 1435-9537
    Keywords: Mots clés Lyon–Turin ; Tunnel profond ; Reconnaissances géologiques ; Géophysique ; Forages ; Key words Lyons–Turin ; Deep tunnel ; Geological surveys ; Geophysics ; Boreholes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Abstract  This article presents the evolution of a geological, geotechnical and geophysical survey system for tunnel projects, using the Ambin Tunnel as an example. After a short introduction to the Lyons–Turin project, the paper describes in chronological order the systems and methods used to obtain geological and geotechnical information. Finally, the paper examines the modifications made to this particular survey programme as a result of the data obtained. The consequences for the evolution of the provisional layout of the tunnel are examined. The project to construct a new Lyons–Turin rail connection is part of the European transport scheme and is a key element in the Trans-European Network. It is one of the 14 priority projects of the European Union. This new link is of great importance for passenger transportation between France and Italy in terms of the potential reduction in journey time; the travel time from Lyons to Turin, instead of the current 3 h 55 min, being reduced to 1 h 20 min. It will also accelerate the transportation of goods. Thus, it will provide the best solution to the problems of transalpine traffic congestion and enhance environmental protection. The key element in the international section of this new link is the Ambin Tunnel, which is over 52 km long, running between Saint Jean de Maurienne (France) and Susa-Bussoleno (Italy). The tunnel will go through the main geological units of the Western Alps from the ultra Dauphinese area (external zone) to the Piemontese area after cutting through the Brianconese reliefs (inner zone). Since 1990, an extensive site investigation survey has been conducted by the SNCF (the French national railway company) and the FS (the Italian 'Ferrovie dello Stato'). Since 1994, this survey has been undertaken by the European Group of Economic Interest, Alpetunnel GEIE. The investigation aimed to accurately define the layout of the tunnel and to reduce as many uncertainties as possible with regard to conditions, time and cost of building. The survey initially utilised information on ground conditions from detailed geological maps and air photographs, allowing the construction of a provisional geological cross section of the tunnel. This cross section highlighted a few areas that were poorly understood. These areas were then studied using seismic refraction and reflection, often in tandem with the drilling of boreholes for increased accuracy. Many boreholes have been drilled to determine the geotechnical characteristics in addition to understanding the geology. Many tests and in-situ measurements have also been undertaken to study the hydrogeological and geotechnical conditions in the mountains that will be bored through. In 1999 and 2000, further drilling will be undertaken in areas requiring more detailed study. Also two directional drilling projects will be started vertically and then run obliquely until reaching the horizontal. This will produce more than 1000 m of horizontal core, allowing a better knowledge of the nature of the ground along the axis of the tunnel to be gained, including geotechnical measurements, hydrogeological data and in-situ geotechnical conditions. Later on, these studies will be extended to allow the construction of three or four survey galleries with the same dimensions as the tunnel in order to check and test the in-situ rocks. Some surveys have been changed midstream as a result of initial results. For example, deeper drilling was undertaken following the realisation that a seismic reflector was present a few metres below . It has also proved necessary to change the layout of the survey gallery at Modane and to change its cross section after the results of the first set of boreholes were analysed. Layers of karst, water-filled cavities, soft ground and flowing water were all found. The layout of the tunnel itself has been changed in several places following the results of the boreholes, seismic data or geotechnical tests. Examples include the first mile of the French side, several miles in the Brianconese coal measures, and the underground service installations. These results have led to an increased construction of survey galleries.
    Notes: Resumé Cet article a pour but de présenter l'évolution des reconnaissances géologique, géotechnique et géophysique menées sur un projet de tunnel, à travers l'exemple concret du tunnel d'Ambin, maillon clé de la partie internationale du projet de nouvelle liaison ferroviaire transalpine Lyon-Turin. A travers la description et les commentaires des résultats obtenus par plus de 80 forages (de 50 à 1520 m de longueur), plus de 100 km de sismique de surface et de la sismique de puits réalisée dans une trentaine de forages, nous montrons la progression et l'adaptation des reconnaissances dans une suite logique d'investigations. Nous présentons également les adaptations apportées en cours d'investigation, entreprises en temps réel au vu des premiers résultats, ainsi que les conséquences sur l'évolution du tracé prévisionnel du tunnel et de certaines galeries de reconnaissances.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Environment, development and sustainability 2 (2000), S. 277-304 
    ISSN: 1573-2975
    Keywords: Systems of Knowledge ; Local Knowledge ; Fisheries ; Resource Management
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Sociology
    Notes: Abstract During the last 20 years, the existence of rich systems of local knowledge, and their vital support to resource use and management regimes, has been demonstrated in a wide range of biological, physical and geographical domains, such as agriculture, animal husbandry, forestry and agroforestry, medicine, and marine science and fisheries. Local knowledge includes empirical and practical components that are fundamental to sustainable resource management. Among coastal-marine fishers, for example, regular catches and, often, long-term resource sustainment are ensured through the application of knowledge that encompasses empirical information on fish behaviour, marine physical environments, fish habitats and the interactions among ecosystem components, as well as complex fish taxonomies. Local knowledge is therefore an important cultural resource that guides and sustains the operation of customary management systems. The sets of rules that compose a fisheries management system derive directly from local concepts and knowledge of the resources on which the fishery is based. Beyond the practical and the empirical, it is essential to recognise the fundamental socio-cultural importance of local knowledge to any society. It is through knowledge transmission and socialisation that worldviews are constructed, social institutions perpetuated, customary practices established, and social roles defined. In this manner, local knowledge and its transmission, shape society and culture, and culture and society shape knowledge. Local knowledge is of great potential practical value. It can provide an important information base for local resources management, especially in the tropics, where conventionally-used data are usually scarce to non-existent, as well as providing a shortcut to pinpoint essential scientific research needs. To be useful for resources management, however, it must be systematically collected and scientifically verified, before being blended with complementary information derived from Western-based sciences. But local knowledge should not be looked on with only a short-term utilitarian eye. Arguments widely accepted for conserving biodiversity, for example, are also applicable to the intellectual cultural diversity encompassed in local knowledge systems: they should be conserved because their utility may only be revealed at some later date or owing to their intrinsic value as part of the world's global heritage. At least in cultures with a Western liberal tradition, more than lip-service is now being paid to alternative systems of knowledge. The denigration of alternative knowledge systems as backward, inefficient, inferior, and founded on myth and ignorance has recently begun to change. Many such practices are a logical, sophisticated and often still-evolving adaptation to risk, based on generations of empirical experience and arranged according to principles, philosophies and institutions that are radically different from those prevailing in Western scientific circles, and hence all-but incomprehensible to them. But steadfastly held prejudices remain powerful. In this presentation I describe the 'design principles' of local knowledge systems, with particular reference to coastal-marine fishing communities, and their social and practical usefulness. I then examine the economic, ideological and institutional factors that combine to perpetuate the marginalisation and neglect of local knowledge, and discuss some of the requirements for applying local knowledge in modern management.
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