Differentiations in the sedimentation of the reservoirs basins from the Someşul Cald cascade system


Differentiations in the sedimentation of the reservoirs basins from the Someşul Cald cascade system

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Title: Differentiations in the sedimentation of the reservoirs basins from the Someşul Cald cascade system
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Article_Title: Differentiations in the sedimentation of the reservoirs basins from the Someşul Cald cascade system
Authors: Gheorghe Şerban, Mircea Alexe
Affiliation: „Babeş-Bolyai” University, Cluj-Napoca, Faculty of Geography, Chair of Phisical and Technical Geography
Abstract: After a general presentation of the afferent basin of the reservoirs from the Someşul Cald
Valley, the authors proced to a short analysis of the suspension flows, which determine the reservoir sedimentations. There are put into evidence several aspects concerning the drainage basin framing on the ground erosion map of Romania, distinguishing low values of this phenomenon, but also the existence of several spaces with anomaly character, respectively values among most erect, due to the presence of the friable sedimentary rocks. This aspect is confirmed by the values measured at the hydrometric stations, included in text under tables and correlation and variation charts form of the specific parameters. In the second part of the study there are emphasized several aspects concerning the zones of maximum intensity of the silting phenomenon, thanks to the graphic elements implemented with GIS technics. In the case of the four reservoirs the principal affluents outlets are characterized by important alluvial deposits, frequently organized under dejection cones form, or reefs and alluvial strings, depending on the volume and the
dynamics of waters from retentions. Particular evolutions are registered in the two small lakes situated in the downstream of the system, where the lateral contribution of consistent suspension flows leads to spectacular evolutions in some basin compartments, establishing even some small deltas. Also, the existence of some hard rocks layers, which traverse the lacustrine basins, establishes a differentiated sedimentation of these compartments (example the Gilău retention). In the dam zones the delicate sediments slide quickly (for example inferior miocen clays), with negative influence in the utilization of water resources for different purposes.
Keywords: reservoirs, suspension flow, sedimentation, accumulation shapes, digital plan model of the basins
References: Alexe, M., Şerban, Gh., Fülöp-Nagy J., Salted lakes from Sovata. Editura Casa Cărţii de Ştiinţă, Cluj-Napoca, 107 p., 2006.
Alexe, M., Şerban, Gh., GIS and GPS role in the management of the Salt Hills dizolvation zones –
case study: salted lakes from Sovata. Geographia Technica, Nr. 1, Cluj University Press, Cluj-Napoca, România, pp. 1-7, 2006.
Aniţan I., Cocuţ N., Fărcaş R., Pop Gh., Tövissi I., Ujvári I., Some researches regarding the silting of the reservoir from Gilău. C.N.A., I.C.P.G.A., Studii de alimentări cu apă, Bucureşti, pp. 106-115, 1977.
Bojoi, I., Surdeanu, V., The evolution of the silting effects in the zone of maximum intensity of
sedimentation from the lake Izvorul Muntelui-Bicaz. Lucr. Şt. Ale Staţiunii “Stejarul”, Vol. V,
Pângăraţi, 1972.
Gâştescu, P., Driga, B., Sandu Maria, Anthropic dam lakes – betwen must and modifications of the
environment. În vol. „Riscuri şi Catastrofe” – vol. II, Editor Sorocovschi, V., Editura Casa
Cărţii de Ştiinţă, Cluj-Napoca, pp. 160-173, 2003.
Giurma, I., The colmatage of the reservoirs, Ed. H.G.A., Bucureşti, 167 p., 1997.
Ichim, I., Apopei, V., Surdeanu, V., Rădoane, Maria, Rădoane, N., Bulzan, M., The colmatage rhythm
in the main zones of confluece of the lake Izvorul Muntelui. Lucrările staţiunii “Stejarul”-
Pîngăraţi, 1976.
Kondratyev, K.Ya., Filatov, N.N., Limnology and Remote Sensing. A Contemporary Approach. Praxis Publishing Ltd, Chichester, UK, 1999.
Mac, I., Certify documentation of the turistic resourt Fântânele and the ethnographic station. Urban
Zona Plan, S.C. FACIL SERVCOM S.R.L. Cluj-Napoca, 110 p., 1998.
Pandi, G., The energetic conception of formation and transport of the suspensions. North-west of
Romania application, Presa Universitară Clujeană, 1997.
Pandi, G., Şerban, Gh., A tomedencek dinamikajanak kornyezeti hatasai termeszetes es antropikus
rendszerekben. Kornyezetvedelem, regionalis versenykepesseg, fenntarthato fejlodes c.
konferencia eloadasi, Pecsi Tudomanyegyetem – Kozgazdasag-Tudomanyi Kara, Pecs, Hungary, pp. 126-136, 2005.
Rădoane Maria, Rădoane, N., Hidrotechnic impact of the constrruction on the dynamic relief. În vol.
„Riscuri şi Catastrofe” – vol. II, Editor Sorocovschi, V., Editura Casa Cărţii de Ştiinţă,
Cluj-Napoca, pp. 174-185, 2003.
Romanescu, Gh., Terestrial and aquatic sedimentation environments. Delta and estuary, Edit. Bucovina
Istorică, Suceava, 2002.
Sorocovschi, V., Transylvanian Plain – Hidrogeographic study, Edit. Casa Cărţii de Ştiinţă, Cluj-Napoca, 2005.
Şerban, Gh., The silting evaluation of the Someşul Cald reservoirs. Sesiunea anuală de comunicări
ştiinţifice “Geographica Timisensis”, Vol. 8-9, Timişoara 14 – 15 Mai, pp. 145-156, 1999.
Şerban, Gh., Bursaşiu Liana, The risk evaluation of the dam and for those inducted by the silting of the reservoirs from Someşul Cald Valley. În vol. „Riscuri şi Catastrofe” – vol. II, Editor
Sorocovschi, V., Editura Casa Cărţii de Ştiinţă, Cluj-Napoca, pp. 186-195, 2003.
Şerban, Gh., Alexe, M., Touchart, L., The evolution of the basin model and the salinity of the lakes
from Cojocna (Transilvanian Plain, Romania). Bulletin de l’Association de Geographes Francais, No 2, Juin, 82e annee, Section II: Lacs, etangs et zones humides: une demarche de geographie limnologique, pg. 234 – 245, Paris, France, 2005.
Şerban, Gh., Alexe, M., GIS applications in the reservoirs management – case study Someşul Cald lake. Geographia Technica, Nr. 1, Cluj University Press, Cluj-Napoca, România, pp. 181-187, 2006.
*** http://www.greenagenda.org/eco-aqua/somes.htm, Clubul Ecologic "TRANSILVANIA" (CET), 2007
Read_full_article: pdf/18-2008/SU08Serban.pdf
Correspondence: Gheorghe ŞERBAN, Universitatea „Babeş-Bolyai”, Facultatea de Geografie, Catedra de Geografie Fizică şi Tehnică, Str. Clinicilor, Nr. 5-7, 400006, Cluj-Napoca, România, Tel. +40-(264)-596116, Fax +40-(264)-597988, email: serban@geografie.ubbcluj.ro

Read full article
Article Title: Differentiations in the sedimentation of the reservoirs basins from the Someşul Cald cascade system
Authors: Gheorghe Şerban, Mircea Alexe
Affiliation: „Babeş-Bolyai” University, Cluj-Napoca, Faculty of Geography, Chair of Phisical and Technical Geography
Abstract: After a general presentation of the afferent basin of the reservoirs from the Someşul Cald
Valley, the authors proced to a short analysis of the suspension flows, which determine the reservoir sedimentations. There are put into evidence several aspects concerning the drainage basin framing on the ground erosion map of Romania, distinguishing low values of this phenomenon, but also the existence of several spaces with anomaly character, respectively values among most erect, due to the presence of the friable sedimentary rocks. This aspect is confirmed by the values measured at the hydrometric stations, included in text under tables and correlation and variation charts form of the specific parameters. In the second part of the study there are emphasized several aspects concerning the zones of maximum intensity of the silting phenomenon, thanks to the graphic elements implemented with GIS technics. In the case of the four reservoirs the principal affluents outlets are characterized by important alluvial deposits, frequently organized under dejection cones form, or reefs and alluvial strings, depending on the volume and the
dynamics of waters from retentions. Particular evolutions are registered in the two small lakes situated in the downstream of the system, where the lateral contribution of consistent suspension flows leads to spectacular evolutions in some basin compartments, establishing even some small deltas. Also, the existence of some hard rocks layers, which traverse the lacustrine basins, establishes a differentiated sedimentation of these compartments (example the Gilău retention). In the dam zones the delicate sediments slide quickly (for example inferior miocen clays), with negative influence in the utilization of water resources for different purposes.
Keywords: reservoirs, suspension flow, sedimentation, accumulation shapes, digital plan model of the basins
References: Alexe, M., Şerban, Gh., Fülöp-Nagy J., Salted lakes from Sovata. Editura Casa Cărţii de Ştiinţă, Cluj-Napoca, 107 p., 2006.
Alexe, M., Şerban, Gh., GIS and GPS role in the management of the Salt Hills dizolvation zones –
case study: salted lakes from Sovata. Geographia Technica, Nr. 1, Cluj University Press, Cluj-Napoca, România, pp. 1-7, 2006.
Aniţan I., Cocuţ N., Fărcaş R., Pop Gh., Tövissi I., Ujvári I., Some researches regarding the silting of the reservoir from Gilău. C.N.A., I.C.P.G.A., Studii de alimentări cu apă, Bucureşti, pp. 106-115, 1977.
Bojoi, I., Surdeanu, V., The evolution of the silting effects in the zone of maximum intensity of
sedimentation from the lake Izvorul Muntelui-Bicaz. Lucr. Şt. Ale Staţiunii “Stejarul”, Vol. V,
Pângăraţi, 1972.
Gâştescu, P., Driga, B., Sandu Maria, Anthropic dam lakes – betwen must and modifications of the
environment. În vol. „Riscuri şi Catastrofe” – vol. II, Editor Sorocovschi, V., Editura Casa
Cărţii de Ştiinţă, Cluj-Napoca, pp. 160-173, 2003.
Giurma, I., The colmatage of the reservoirs, Ed. H.G.A., Bucureşti, 167 p., 1997.
Ichim, I., Apopei, V., Surdeanu, V., Rădoane, Maria, Rădoane, N., Bulzan, M., The colmatage rhythm
in the main zones of confluece of the lake Izvorul Muntelui. Lucrările staţiunii “Stejarul”-
Pîngăraţi, 1976.
Kondratyev, K.Ya., Filatov, N.N., Limnology and Remote Sensing. A Contemporary Approach. Praxis Publishing Ltd, Chichester, UK, 1999.
Mac, I., Certify documentation of the turistic resourt Fântânele and the ethnographic station. Urban
Zona Plan, S.C. FACIL SERVCOM S.R.L. Cluj-Napoca, 110 p., 1998.
Pandi, G., The energetic conception of formation and transport of the suspensions. North-west of
Romania application, Presa Universitară Clujeană, 1997.
Pandi, G., Şerban, Gh., A tomedencek dinamikajanak kornyezeti hatasai termeszetes es antropikus
rendszerekben. Kornyezetvedelem, regionalis versenykepesseg, fenntarthato fejlodes c.
konferencia eloadasi, Pecsi Tudomanyegyetem – Kozgazdasag-Tudomanyi Kara, Pecs, Hungary, pp. 126-136, 2005.
Rădoane Maria, Rădoane, N., Hidrotechnic impact of the constrruction on the dynamic relief. În vol.
„Riscuri şi Catastrofe” – vol. II, Editor Sorocovschi, V., Editura Casa Cărţii de Ştiinţă,
Cluj-Napoca, pp. 174-185, 2003.
Romanescu, Gh., Terestrial and aquatic sedimentation environments. Delta and estuary, Edit. Bucovina
Istorică, Suceava, 2002.
Sorocovschi, V., Transylvanian Plain – Hidrogeographic study, Edit. Casa Cărţii de Ştiinţă, Cluj-Napoca, 2005.
Şerban, Gh., The silting evaluation of the Someşul Cald reservoirs. Sesiunea anuală de comunicări
ştiinţifice “Geographica Timisensis”, Vol. 8-9, Timişoara 14 – 15 Mai, pp. 145-156, 1999.
Şerban, Gh., Bursaşiu Liana, The risk evaluation of the dam and for those inducted by the silting of the reservoirs from Someşul Cald Valley. În vol. „Riscuri şi Catastrofe” – vol. II, Editor
Sorocovschi, V., Editura Casa Cărţii de Ştiinţă, Cluj-Napoca, pp. 186-195, 2003.
Şerban, Gh., Alexe, M., Touchart, L., The evolution of the basin model and the salinity of the lakes
from Cojocna (Transilvanian Plain, Romania). Bulletin de l’Association de Geographes Francais, No 2, Juin, 82e annee, Section II: Lacs, etangs et zones humides: une demarche de geographie limnologique, pg. 234 – 245, Paris, France, 2005.
Şerban, Gh., Alexe, M., GIS applications in the reservoirs management – case study Someşul Cald lake. Geographia Technica, Nr. 1, Cluj University Press, Cluj-Napoca, România, pp. 181-187, 2006.
*** http://www.greenagenda.org/eco-aqua/somes.htm, Clubul Ecologic "TRANSILVANIA" (CET), 2007
*Correspondence: Gheorghe ŞERBAN, Universitatea „Babeş-Bolyai”, Facultatea de Geografie, Catedra de Geografie Fizică şi Tehnică, Str. Clinicilor, Nr. 5-7, 400006, Cluj-Napoca, România, Tel. +40-(264)-596116, Fax +40-(264)-597988, email: serban@geografie.ubbcluj.ro