Volume 4, Issue 1, August 2019


Volume 4, Issue 1, August 2019

ISSN 2501-7837
ISSN-L 2501-7837

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Articles

  • Another kind of mountains: seamounts

    Author: Marina MANEA

    Abstract: Some of the most prominent features on the earth surface are the mountain ranges, but, under the sea surface, an entire new universe is worth to be studied. In this article, seamounts around the world are examined in a first attempt to classify them from the point of view of their geodynamical relevance. A special attention will be given to the seamounts positioned in the vicinity of subduction zones. This classification will be used later for numerical modeling their behavior once these seamounts enter into subduction. Also, the present state-of-the-art of the seamounts related knowledge is briefly presented.

    Keywords: seamounts, geodynamical perspective, subduction zone.

    entire article DOI 10.5719/GeoP.4/1

  • Comparative analysis of disaster risk management practices in Bucharest, Ciudad de Mexico and Istanbul

    Author: Ana-Maria GLOD-LENDVAI

    Abstract: Natural disasters represent a major problem for many big cities. The biggest part of the population is in cities, which makes the concept of urban planning be a significant problem for the decision makers. In this paper, there are presented the results of a comparative analysis of the disaster risk management practices between Bucharest and Ciudad de Mexico in South America; and Istanbul in the euro-Mediterranean region. The analysis shows that all three cities have made considerable efforts regarding the risk analysis, especially in earthquakes. The elements they took into consideration are: the political engagement, identifying risks, the institutions and managing knowledge. Finally, the papers concludes by reasoning that the local authorities must focus more on reducing risks in order to reduce the physical vulnerability and to reach urban durability.

    Keywords: disaster risk management, urban hazard risk, urban sustainability, geospatial information systems (GIS), earthquakes, vulnerability.

    entire article DOI 10.5719/GeoP.4/2

  • Gravelometric image analysis of sediments (Prahova River, Romania)

    Author: Daniela Elena GOGOAŞE NISTORAN, Livioara BRAŞOVANU, Cristina Sorana IONESCU, Iuliana ARMAȘ, Andrei COZMA

    Abstract: The paper presents a method of sediment gradation using the Basegrain software to analyse pictures taken from the bed surface in 20 locations along the upper course of Prahova River, Romania. Sediment grading curves and median diameter, median diameter (d50) valuesfor each sample, obtained by the virtual sieving method were compared with the ones obtained through the Wolman - pebble-count method along a shorter reach. Results show a good match between the two methods.

    Keywords: image analysis, Wolman method, sediment grading curves, mean diameter, virtual sieving.

    entire article DOI 10.5719/GeoP.4/3

  • Downstream coarsening of subsurface sediment grain size along upper Prahova River (Romania)

    Author: Daniela Elena GOGOAŞE NISTORAN, Livioara BRAŞOVANU, Cristina Sorana IONESCU, Iuliana ARMAȘ

    Abstract: The paper presents the results obtained from a subsurface sediment grain size analysis along the upper, gravel-bed, Prahova River, Romania. Samples were taken from 20 locations over a 56 km study reach and were subsequently sieved and weighted in the laboratory. Both d50 and d84 characteristic diameters were plotted against distance and an overall downstream coarsening was identified. Considering the natural and anthropic context of the studied reach, hypotheses to explain this trend were launched.

    Keywords: sediment grading curve, mean diameter, sieve analysis, volumetric analysis, gravel-bed river, d50, d84, downstream coarsening, downstream fining.

    entire article DOI 10.5719/GeoP.4/4

  • Multi-criteria analysis for major road infrastructure projects. Case study: Brașov – Bacău Highway

    Author: PhD Student Cosmin PĂUNESCU, Ass. Prof. Robert DOBRE, PhD Student Traian DRĂGHICI

    Abstract: Road infrastructure projects have proven to be a challenging task, particularly in a dynamic setting, such as mountains and hillsides. Such an endeavour entails the integration and processing of cross-disciplinary research, particularly engineering and geosciences. Our study is oriented towards the geographic aspects, specifically the ones involving applied geomorphology. We aim to provide a cartographic solution that reveals the areas suitable for developing a road network, based on a geomorphologic and environmental approach. This is achieved through a GIS-based multi-criteria analysis involving raster data sets of different geodynamic factors, such as geology, pedology, gravitational processes, land use and other environmental components.

    Keywords: GIS, Road Infrastructure, Highway, Multi-criteria Analysis.

    entire article DOI 10.5719/GeoP.4/5

  • A PhD approach to assessing deforestation dynamics over two decades in two Romanian counties

    Author: Alexandru Ioan CRĂCIUN, PhD student

    Abstract: Deforestation is an increasingly visible and heatedly debated issue in Romania. This PhD thesis aims to join the argument and accurately determine forest dynamics in two counties by comparing satellite data recorded roughly 20 years apart. Additionally, it will attempt to establish a correlation between changes in forest cover and the occurrence of extreme events. If successful, the analysis will subsequently be conducted nationally.

    Keywords: deforestation, land use, satellite imagery, extreme events.

    entire article DOI 10.5719/GeoP.4/6

  • Conference review: Water and Culture: A View from Rome, 17-18 April 2019, American Academy of Rome

    Author: Dr. Maria BOSTENARU-DAN

    Abstract: On 17-18 April 2019, a conference was held at the American Academy of Rome (AAR) on the topic of coupling water as a hazard (floods, illness) and water as heritage, spanning from archaic (i.e. Antiquity) to contemporary design. The talks consisted of an introduction, two full sessions, a panel session on the pressing issue of climate change, and a final discussion. ENEL was one of the event-planning partners. Various fields of study were represented, ranging from design to branches of humanities and social sciences, including economics. Speakers came mainly from the USA with research fields related to Italy. Prior to the conference, a symposium on “Designing with water” was organized by the AAR, the conclusions of which were presented in the panel.

    Keywords: floods, Antiquity, rural landscapes, design, energy.

    entire article DOI 10.5719/GeoP.4/7