Development of a User-Centred Web-Mapping Application for Ocean Modellers     

Marta Padilla-Ruiz  Emmanuel Stefanakis  Ian Church 《Marine Geodesy》2013,36(6):507-534

Abstract

This paper reports on the User-Centred Design and development of a web-mapping application from the Ocean Mapping Group (OMG) at the University of New Brunswick (UNB), to deliver ocean mapping data to ocean modellers. First, a work domain analysis was conducted to determine the required application functionality and content, consisting of an ocean modeller informal interview, a competitive analysis, and an online survey. Taking insight from the work domain analysis, a requirements document was prepared to support the development of the first application prototype. This prototype was then evaluated by eight target users, using a cognitive walkthrough and an online survey. The results from this evaluation led to a series of revisions to the functionality, content, and interface of the web-mapping application, establishing the revised prototype. The results showed a useful tool, end-user satisfaction, and stated a wide range of recommendations to enhance functionality for the next steps of the development.  相似文献   

Physical studies of Centaurs and Trans-Neptunian Objects with the Atacama Large Millimeter Array     

Arielle Moullet  Emmanuel Lellouch  Mark Gurwell 《Icarus》2011,213(1):382-392

Once completed, the Atacama Large Millimeter Array (ALMA) will be the most powerful (sub)millimeter interferometer in terms of sensitivity, spatial resolution and imaging. This paper presents the capabilities of ALMA applied to the observation of Centaurs and Trans-Neptunian Objects, and their possible output in terms of physical properties. Realistic simulations were performed to explore the performances of the different frequency bands and array configurations, and several projects are detailed along with their feasibility, their limitations and their possible targets. Determination of diameters and albedos via the radiometric method appears to be possible on ∼500 objects, while sampling of the thermal lightcurve to derive the bodies’ ellipticity could be performed at least 30 bodies that display a significant optical lightcurve. On a limited number of objects, the spatial resolution allows for direct measurement of the size or even surface mapping with a resolution down to 13 milliarcsec. Finally, ALMA could separate members of multiple systems with a separation power comparable to that of the HST. The overall performance of ALMA will make it an invaluable instrument to explore the outer Solar System, complementary to space-based telescopes and spacecrafts.  相似文献   

Late Wuchiapingian (Late Dzhulfian,early Late Permian) limestone olistolites within the Tertiary flysch of Glypia Unit (Mount Parnon,central–eastern Peloponnesus,Greece)     

Emmanuel Skourtsos  Daniel Vachard  Alexandra Zambetakis-Lekkas  Rossana Martini  Louisette Zaninetti 《Comptes Rendus Geoscience》2002,334(12):925-931

Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931.  相似文献   

Distribution of mercury and methylmercury in deep-sea surficial sediments of the Mediterranean Sea     

Nives Ogrinc  Mathilde Monperrus  Jože Kotnik  Vesna Fajon  Klara Vidimova  David Amouroux  David Kocman  Emmanuel Tessier  Suzana Žižek  Milena Horvat 《Marine Chemistry》2007

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Soil surface characteristics influence on infiltration in black marls: application to the Super‐Sauze earthflow (southern Alps,France)     

Jean‐Philippe Malet  Anne‐Veronique Auzet  Olivier Maquaire  Bruno Ambroise  Luc Descroix  Michel Esteves  Jean‐Pierre Vandervaere  Emmanuel Truchet 《地球表面变化过程与地形》2003,28(5):547-564

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Application of Artificial Neural Networks to Complex Groundwater Management Problems   总被引：4，自引：0，他引：4  

Coppola  Emery  Poulton  Mary  Charles  Emmanuel  Dustman  John  Szidarovszky  Ferenc 《Natural Resources Research》2003,12(4):303-320

As water quantity and quality problems become increasingly severe, accurate prediction and effective management of scarcer water resources will become critical. In this paper, the successful application of artificial neural network (ANN) technology is described for three types of groundwater prediction and management problems. In the first example, an ANN was trained with simulation data from a physically based numerical model to predict head (groundwater elevation) at locations of interest under variable pumping and climate conditions. The ANN achieved a high degree of predictive accuracy, and its derived state-transition equations were embedded into a multiobjective optimization formulation and solved to generate a trade-off curve depicting water supply in relation to contamination risk. In the second and third examples, ANNs were developed with real-world hydrologic and climate data for different hydrogeologic environments. For the second problem, an ANN was developed using data collected for a 5-year, 8-month period to predict heads in a multilayered surficial and limestone aquifer system under variable pumping, state, and climate conditions. Using weekly stress periods, the ANN substantially outperformed a well-calibrated numerical flow model for the 71-day validation period, and provided insights into the effects of climate and pumping on water levels. For the third problem, an ANN was developed with data collected automatically over a 6-week period to predict hourly heads in 11 high-capacity public supply wells tapping a semiconfined bedrock aquifer and subject to large well-interference effects. Using hourly stress periods, the ANN accurately predicted heads for 24-hour periods in all public supply wells. These test cases demonstrate that the ANN technology can solve a variety of complex groundwater management problems and overcome many of the problems and limitations associated with traditional physically based flow models.  相似文献   

Where Are Porphyry Copper Deposits Spatially Localized? A Case Study in Benguet Province,Philippines   总被引：10，自引：0，他引：10  

Carranza  Emmanuel John M.  Hale  Martin 《Natural Resources Research》2002,11(1):45-59

To provide guides for exploration of porphyry copper mineralization at a district scale, we examine the spatial association between known porphyry copper deposits and geologic features in Benguet, Philippines. The spatial associations between the porphyry copper deposits and strike-slip fault discontinuities, batholithic pluton margins and porphyry plutons are quantified using weights of evidence modeling. In the training and testing district, the porphyry copper occurrences are associated spatially with strike-slip fault discontinuities, batholithic pluton margins and contacts of porphyry plutons within distances of 3 km, 2.25 km, and 1 km, respectively. In addition, the porphyry plutons are associated spatially with strike-slip fault discontinuities and contacts of batholithic plutons within a distance of 2.25 km and 3 km, respectively. Based on these significant spatial associations, predictive maps are generated to delineate zones favorable for porphyry copper mineralization and zones favorable for emplacement of porphyry plutons in Benguet province, Philippines. Validations of the predictive models demonstrate their efficacy in pointing to zones for subsequent follow-up exploration work.  相似文献   

Digital Surface Modelling by Airborne Laser Scanning and Digital Photogrammetry for Glacier Monitoring   总被引：2，自引：0，他引：2  

Emmanuel P. Baltsavias  Etienne Favey  reas Bauder  Hermann Bosch  & Maria Pateraki 《The Photogrammetric Record》2001,17(98):243-273

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A Compilation of Silicon and Thirty One Trace Elements Measured in the Natural River Water Reference Material SLRS-4 (NRC-CNRC)   总被引：1，自引：0，他引：1  

Delphine Yeghicheyan  Jean Carignan  Michel Valladon  Martine Bouhnik Le  Coz  Florence Le Cornec  Maryse Castrec-Rouelle  Michel Robert  Luc Aquilina  Emmanuel Aubry  Carine Churlaud  Aline Dia  Samuel Deberdt  Bernard Dupré  Rémi Freydier  Gérard Gruau  Odile Hénin  Anne-Marie de  Kersabiec  Joël Macé  Luc Marin  Nicole Morin  Patrice Petitjean  Elodie Serrat 《Geostandards and Geoanalytical Research》2001,25(2-3):465-474

The natural river water certified reference material SLRS-4 (NRC-CNRC, National Research Council-Conseil National de Recherches Canada) has been routinely analysed for major and trace elements by six French laboratories. Most measurements were made using inductively coupled plasma-mass spectrometry. For silicon and thirty one trace elements (rare earth elements, Ag, B, Br, Cs, Ga, Ge, Li, P, Pd, Rb, Se, Th, Ti, Tl, W, Y and Zr), no certified values are assigned by NRC-CNRC. We propose some compilation values and related uncertainties according to the results obtained by the different laboratories.  相似文献   

Teacher''s Aide Variogram Interpretation and Modeling   总被引：13，自引：0，他引：13  

Emmanuel Gringarten  Clayton V. Deutsch 《Mathematical Geology》2001,33(4):507-534

The variogram is a critical input to geostatistical studies: (1) it is a tool to investigate and quantify the spatial variability of the phenomenon under study, and (2) most geostatistical estimation or simulation algorithms require an analytical variogram model, which they will reproduce with statistical fluctuations. In the construction of numerical models, the variogram reflects some of our understanding of the geometry and continuity of the variable, and can have a very important impact on predictions from such numerical models. The principles of variogram modeling are developed and illustrated with a number of practical examples. A three-dimensional interpretation of the variogram is necessary to fully describe geologic continuity. Directional continuity must be described simultaneously to be consistent with principles of geological deposition and for a legitimate measure of spatial variability for geostatistical modeling algorithms. Interpretation principles are discussed in detail. Variograms are modeled with particular functions for reasons of mathematical consistency. Used correctly, such variogram models account for the experimental data, geological interpretation, and analogue information. The steps in this essential data integration exercise are described in detail through the introduction of a rigorous methodology.  相似文献