Barriers and enablers to the use of seasonal climate forecasts amongst organisations in Europe     

Marta Bruno Soares  Suraje Dessai 《Climatic change》2016,137(1-2):89-103

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The composition of nanogranitoids in migmatites overlying the Ronda peridotites (Betic Cordillera,S Spain): the anatectic history of a polymetamorphic basement     

Antonio Acosta-Vigil  Amel Barich  Omar Bartoli  Carlos J. Garrido  Bernardo Cesare  Laurent Remusat  Stefano Poli  Caroline Raepsaet 《Contributions to Mineralogy and Petrology》2016,171(3):24

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Hydrothermal remobilisation around a deformed and remobilised komatiite-hosted Ni-Cu-(PGE) deposit,Sarah’s Find,Agnew Wiluna greenstone belt,Yilgarn Craton,Western Australia     

Margaux Le Vaillant  Ahmad Saleem  Stephen J. Barnes  Marco L. Fiorentini  John Miller  Steve Beresford  Caroline Perring 《Mineralium Deposita》2016,51(3):369-388

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Comparison of methods for calculation of the wave envelope     

A. Veltcheva  P. Cavaco  C. Guedes Soares   《Ocean Engineering》2003,30(7):937-948

Different methods for computing of the Hilbert transform are reviewed and discussed in this work. Statistical characteristics of the wave envelope determined by different methods are compared with the theoretical ones. Field data, collected at the Portuguese coast are used in this comparative analysis. The advantages and shortcomings of the different methods for determination of the wave envelope are shown and discussed.  相似文献   

Enumeration, measurement, and identification of net zooplankton samples using the ZOOSCAN digital imaging system   总被引：2，自引：0，他引：2  

Grosjean  Philippe; Picheral  Marc; Warembourg  Caroline; Gorsky  Gabriel 《ICES Journal of Marine Science》2004,61(4):518-525

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Current state of water quality indicators in urban streams in New Zealand     

Jennifer Gadd  Ton Snelder  Caroline Fraser  Amy Whitehead 《新西兰海洋与淡水研究杂志》2020,54(3):354-371

ABSTRACT

National assessments have highlighted that urban streams have some of the poorest water quality in New Zealand, yet there has been no analysis focussing on these streams. In this study we defined urban streams as >15% catchment urban land cover and used monitoring data to assess several indicators of water quality including dissolved metals, nutrients, bacteria and the macroinvertebrate community index. We investigated associations between the indicators and urban land cover, imperviousness and geographic location. Water quality was highly variable, within and between monitored sites; and invariably poor when compared to water quality criteria. Dissolved zinc was positively related to the proportion of urban land cover and imperviousness in the upstream catchment. There were significant differences in ammoniacal-N, nitrate-N, turbidity, MCI, dissolved zinc and E. coli between geographic locations. The analysis indicates that if urban development continues in its current form, increases in urban land cover around New Zealand can be expected to result in further declines in water quality and a reduced likelihood that water quality objectives will be achieved at impacted locations.  相似文献   

Assessment of the effect of mooring systems on the horizontal motions with an equivalent force to model     

R. Pascoal  S. Huang  N. Barltrop  C. Guedes Soares   《Ocean Engineering》2006,33(11-12):1644-1668

The present work was carried out to assess the performance of an equivalent force model for the rapid analysis of mooring lines subject to horizontal motions. The verification is performed for cases of practical interest. Due to the very distinct behaviour of slack, moderately slack and taught moorings, these are analysed separately and the variation in the model coefficients is justified. It is shown that the methodology provides reasonable estimates of the mooring line behaviour. The final equation is very simple to introduce into a vessel motion program and is also thought to be useful in controller design or stability analysis.  相似文献   

Correlation between successive wave heights and periods in mixed sea states     

Germn R. Rodríguez  C. Guedes Soares 《Ocean Engineering》2001,28(8)

The degree of dependence between successive wave heights and periods is examined for sea states resulting from the combination of a remotely generated wave field and a locally generated wave system, based on simulated wave records. The sea states analysed represent situations that are swell dominated, wind–sea dominated or they have equivalent energy in the wind–sea and swell components. Results of the analysis of the simulated data have been compared with those expected from the theories for the joint distributions of consecutive wave heights and periods and with the results from a Pierson–Moskowitz target spectrum.  相似文献   

Experimental investigation of a fast monohull in forced harmonic motions     

A. Marn  J. Ponce  N. Fonseca  C. Guedes Soares 《Applied Ocean Research》2004,26(6):241-255

The paper presents the results of an experimental investigation of added masses and damping coefficients of a model of a fast monohull. A model of 4.5 m length between perpendiculars was constructed of fiber glass reinforced plastic (FRP) with four segments connected by a backbone. The backbone was instrumented with load cells at the positions of the cuts. This configuration, combined with load cells measuring the force exerted by the forced motion actuators, made it possible to obtain the hydrodynamic coefficients for each of the four hull segments.

The investigation focused on the vertical motions. Thus, the experimental program included forced harmonic heave and pitch motions in calm water (no incident waves). Subtracting inertial and restoring forces from total measured forces, one obtained the hydrodynamic component, which then resulted in the hydrodynamic coefficients. The effects of steady forward speed on the radiation forces were investigated by conducting model tests at four forward speeds. Finally, nonlinear effects were assessed by conducting model tests for three amplitudes of forced heave and forced pitch motions.  相似文献   

Community structure of macrobenthos in two tropical sandy beaches with different morphodynamic features, Rio de Janeiro, Brazil     

Renata Soares Ramalho Fernandes  & Abilio Soares-Gomes 《Marine Ecology》2006,27(2):160-169

The macrobenthos of two exposed tropical sandy beaches in Rio de Janeiro (Brazil) were compared in relation to density, species richness, and vertical zonation. Biological and sediment samplings were carried out in the austral winter of 2002 and the austral summer of 2003. The sampling design consisted of 10 transects perpendicular to the water line, evenly divided into strata. A sampling unit was taken in each stratum with a 0.04 m² quadrat sampler. Beaches were also compared according to physical features, such as slope, wave period, wave height, and grain size. According to Dean's Ω morphodynamic index the Pontal is a dissipative beach while the Costa Azul is a reflective one. The mean grain size ranged from median to coarse sand in Costa Azul, whereas in Pontal it ranged from median to very fine sand. Eleven species were collected in the two beaches. Crustaceans were the dominant in the Costa Azul Beach, while the polychaete Scolelepis squamata dominated the Pontal beach. A negative correlation was found between the density of the macrobenthos and mean grain size, and beach slope. On the other hand, the Dean's parameter correlated positively with faunal density. Based on the results of ANOSIM, in both beaches, two groups of stations were identified, defining an upper and a lower beach zone along the vertical distribution of the macrobenthos.  相似文献