- Biogeography (19)
- Climatology (36)
- Environment (77)
- Geomorphology (58)
- GIS and Remote Sensing (19)
- Human and economic geography (63)
- Hydrology (57)
- Regional geography (45)
- Tourism (42)
- Various (37)
Geographical studies and environment protection research
Subjects
Volume XIII | Issue 1
Statistical assessing of hydrological alteration of Buzău River induced by Siriu Dam (Romania)
Abstract: In this paper we evaluate the hydrological impact produced on the river mean daily discharge (water) of Buzău River by Siriu Dam. The study data was the daily mean discharge registered from the 1st of January 1955 to the 31st of December 2010, at the Nehoiu hydrometric station on the Buzău River. The flow of this river is controlled in its upper reach by Siriu Dam, from 1984. The main method used for the evaluation of the hydrologic alteration at temporal scale was based on the tests provided by the Indicators of Hydrologic Alteration (IHA) software. The statistical analysis proved that the built of Siriu Dam had a moderate influence on the mean daily discharge regime of Buzău River at large time intervals, significant changes appearing at small time scales.
Full article 10.5775/fg.2067-4635.2014.104.iDates:
Received: 15-01-2014 Accepted: 30-04-2014 Printed: 02-06-2014 Online: 08-08-2014
Affiliations:
- 1 National Institute of Hydrology and Water Management, Bucharest, Romania
- 2 Technical University of Civil Engineering, Doctoral School, 122 - 124, Lacul Tei Bvd., 020396, Bucharest, Romania
Citation:
Acknowledgements:
We would like to extend our gratitude to the valuable reviews and comments by the anonymous referees. Also, thanks to the Scientific Director, Mary-Jeanne ADLER PhD from the NIHWM, for permission to access to the hydrological data base, Marius BÎRSAN PhD from NMA for his support, and Executive Editor Liliana POPESCU PhD, from for her support during the review period.
Copyright:
© 2014 The Author(s). Published by Forum geografic.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Volume XII | Issue 1
New Techniques for the Analysis of the Limno-morpho-bathymetric Parameters in the Lacustrine Basins. Case Study: Red Lake in the Hăşmaş Mountains (Romania)
Abstract: Red Lake in the Hăşmaş (Curmăturii) Mountains was formed by the natural barrage of the Bicaz brook in 1837. The north-western slope of the Ghilcoş Mountain, covered with gravel, slide as a result of the alteration layer water saturation following the abundant rains in that period. The lake has an „L” shape, or the shape of a leg with the foot oriented towards north. Red Lake is supplied by several brooks with permanent character: Oii, Ghilcoş, Vereşcheu, Suhard. As a result of the measurements we made in the summer of 2009, using Leica Total Station and sonar, the following data were obtained: area 12.01 hectares; perimeter 2905.79 m; maximum length 1361.72 m; maximum width 160.24 m; maximum altitude upstream in the south 965.199 m; maximum altitude upstream in the north 966.041 m; maximum depth 10.50 m etc. The greatest depths, of 10.5 m, are recorded in the central sector, close to the outlet of the two arteries. In a transversal profile, the western bank is steeper and hard (lithologically), and the eastern bank is mild and crumbly (landslide diluvium). In the same way the submerse slopes are maintained as well. New techniques of analysing the hydro-morphological parameters for a lacustrine basin have been used. Methods specific to land geomorphology (slope inclination, slope orientation etc) have also been used. The cartographic representation, as a new thing in the field, is suggestive, and helps in elaborating an interdisciplinary interpretation, of a limno-ecological nature.
Full article 10.5775/fg.2067-4635.2013.021.iDates:
Received: 10-01-2012 Accepted: 11-03-2013 Printed: 28-06-2013 Online: 20-07-2013
Affiliations:
Corresponding author:
Citation:
Copyright:
© 2013 The Author(s). Published by Forum geografic.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Volume XI | Issue 1
The sediment transport of the Siret River during the floods from 2010
Abstract: Beginning with 2004 in the Siret River Catchment there occurred exceptional flash floods that exceeded the maximum historical values recorded, on the main river and on its tributaries (2004, the Trotuş River; 2005, the Siret River, the Trotuş River, the Bistriţa River, the Putna River; 2006 – the Clit River from the Suceava River Catchment; 2008, the Siret River, the Suceava River). The 2010 summer flood from the Siret River also falls in this category. This paper uses hydrological data (water discharge, suspended sediment discharge) between the 20th of June and 10th of July 2010 from 5 gauging stations located on the Siret River: Siret, Hutani, Lespezi, Dragesti, Lungoci, and also meteorological data (rainfall) measured at different gauging stations from the Siret River Catchment. The rainfall recorded in this time of the year in the catchment was very high, with values up to 210 l/m2 in approximately 10 days. The hydrographs of the flash flood indicate the fact that the transit of the water trough the reservoirs system from the Siret River (Rogojeşti – Bucecea and Răcăciuni – Bereşti –Călimăneşti – Movileni) reduced the maximum water discharge with values between 7-27%. The values of the maximum sediment discharge also recorded a reduction while transiting this reservoirs system with approximately 60%. The evolution of the Siret river bed channel during this flood (aggradations with values between 15-100 cm and degradations starting from 65 cm until 200 cm, in different moments of the flood) is influenced by the high values of the water and sediment discharge and by anthropogenic interventions on the river bed (pit-ballast, regularization of the river bed, reservoirs). Processing the hydrological and meteorological data recorded during the flood (20th of June – 10th of July 2010) indicates two important features of this event: the climatic variability – exemplified by the big values of precipitations from the catchment and the anthropogenic impact revealed by the transit of the flood wave and the evolution of the river bed.
Full article 10.5775/fg.2067-4635.2012.064.iDates:
Received: 01-09-2011 Accepted: 02-09-2011 Printed: 01-06-2012 Online: 29-07-2012
Affiliations:
Corresponding author:
Citation:
Acknowledgements:
This paper has been financially supported within the project entitled „Doctorate: an Attractive Research Career”, contract number POSDRU/107/1.5/S/77946, co-financed by European Social Fund through Sectorial Operational Programme for Human Resources Development 2007-2013. Investing in people!”
Copyright:
© 2012 The Author(s). Published by Forum geografic.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Volume IX | Issue 9
The Determination of the Degree of Trophicity of the Lacustrine Wetlands in the Eastern Carpathians (Romania)
Abstract: The lakes over Romania’s territory are relatively uniformly distributed within most physico-geographical regions. A low density is specific to the West, where significant drainage works have been realized, while the highest density is characteristic to the North-East, with numerous ponds, registered since the 14th-15th centuries. Most of the lakes within the Romanian territory, especially those analyzed in the present study, are anthropic. Most of the natural lakes are small-dimensioned and they do not have a special ecologic or economic importance. Although situated in different physical-geographical conditions, the analyzed lakes are mostly included in the category of good waters from a qualitative point of view, and within the eutrophic, mesotrophic or hipertrophic category, from a trophic point of view. Because of the fact that most lakes are anthropic, it is obvious that they are artificially maintained at this stage. Most of the mountain lakes and those in the volcanic areas are ultra-oligotrophic and oligotrophic. The lacustrine wetlands in the mountainous units are relatively meagrely developed, as their distribution is limited by the morphology of the landforms.
Full article Dates:
Printed: 01-11-2010 Online: 21-11-2010
Affiliations:
- 1 Faculty of Geography and Geology, Alexandru Ioan Cuza University of Iaşi, Iaşi, Romania
- 2 Eco-Museal Research Institute, Danube Delta Ecotouristic Center, Tulcea
Citation:
Acknowledgements:
An important logistic support was received from the Headquarters of Water Supply – Bucharest, providing a part of the data referring to the trophicity of several lakes on Romania’s territory. Our thanks go to the research teams within the Geo-archaeology Laboratory, Faculty of Geography and Geology in Iaşi and the Eco-museum Research Institute in Tulcea, as they helped us analysing and partially interpreting the samples. The measurements and the publication were paid by the Ministry of Education and Research, through CNCSIS grant no. 426, for the period 2007-2010, with prof.dr. Gheorghe Romanescu as a grant director.
Copyright:
© 2010 The Author(s). Published by Forum geografic.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Volume VIII | Issue 8
The Importance of the Asymmetry of Small Hydrographic Basins in the Occurrence of Major Floods in the Rarău Massif
Abstract: The present study approaches a series of geomorphological aspects specific to hydrographic basins of small sizes which, in certain circumstances, favor the occurrence of floods having major effects upon the human settlements. We focused our attention on three neighboring hydrographical basins, located in a mountainous area in the north of the Romanian Carpathians, where on the 24th of July 2008, following some heavy rains, there occurred major floods. Although the three rivulets the Valea Seacă, the Izvorul Alb and the Valea Caselor are tributaries on the right side of the Moldova river, the behaved differently during the above mentioned flood. The particularity is that within the Izvorul Alb hydrographic basin the maximum flow during the flood was two time lower than in the case of the other two basins between which it is located. Given the fact that the quantity of precipitations received by all three basins did not differ and the physical-geographical features are similar, there was performed the morphometric analysis of all three hydrographical basins in order to outline the morphometric variables with a role in the concentration of the runoff: the surface, the slope, the roundness, the shape coefficient, etc. The conclusion drawn from this case study is that the asymmetry of the basin is an essential parameter in making the difference in respect to the behavior of small hydrographical basins during the formation of exceptional floods.
Full article Dates:
Printed: 30-11-2009 Online: 10-12-2009
Affiliations:
Corresponding author:
Citation:
Copyright:
© 2009 The Author(s). Published by Forum geografic.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Provided under the Creative Commons Attribution-NonCommercial-NoDerivatives License.
Open Access article.
Keywords
agriculture
Banat
Bucharest
Bulgaria
climate change
COVID-19
Craiova
cultural tourism
Danube
deindustrialization
demographic decline
drought
Environment
erosion
European Union
flash flood
flood risk
geodiversity
geomorphology
geomorphometry
GIS
human pressure
Hungary
land cover
landscape
land use
morphometry
Oltenia Plain
pollution
precipitation
regional development
remote sensing
Romania
rural-urban fringe
rural area
rural tourism
Serbia
Southern Carpathians
sustainability
sustainable development
tourism
urban development
urban sprawl
urban transport
water pollution
Meta
© 2009- 2026 Forum geografic
Designed by Alin Clincea.