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Pregled bibliografske jedinice broj: 260687

Qualitative assessment of geohazard in the Rječina River Valley, Croatia


Benac, Čedomir; Jurak, Vladimir; Oštrić, Maja; Ožanić, Nevenka
Qualitative assessment of geohazard in the Rječina River Valley, Croatia // IAEG 2006 Engineering geology for tomorrow's cities. Abstract of the 10th IAEG International Congress / Culshaw, Martin ; Reeves, Helen ; Spink, Tim ; Jefferson, Ian (ur.).
London: The Geological Society of London, 2006. str. 658-658 (poster, međunarodna recenzija, sažetak, ostalo)


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Naslov
Qualitative assessment of geohazard in the Rječina River Valley, Croatia

Autori
Benac, Čedomir ; Jurak, Vladimir ; Oštrić, Maja ; Ožanić, Nevenka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
IAEG 2006 Engineering geology for tomorrow's cities. Abstract of the 10th IAEG International Congress / Culshaw, Martin ; Reeves, Helen ; Spink, Tim ; Jefferson, Ian - London : The Geological Society of London, 2006, 658-658

Skup
IAEG 2006 Engineering geology for tomorrow's cities

Mjesto i datum
Notthingam, United Kingdom, 6-10.09.2006

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
geological hazards; landslides; mass movement; slope stability; floods

Sažetak
Rjecina watercourse is 18.7 km long and its river mouth is in the center of Rijeka city. The central part of Rjecina river is 1.8 km long, and 0.8 to 1.1 km wide and it represents a narrow flysch valley between a karst plateau. Maximal annual discharge is 248 m3s-1 during the 100 yr returning period. The Cretaceous and Paleogene limestone rocks are situated on the top of the slope, while the Paleogene flysch is situated lower on the slope, including the bottom of the valley. Southwestern slope of the valley is covered by predominantly coarse soils of limestone composition. Crown of instability is clearly marked by cliffs formed in limestone rocks which are very disintegrated and recently opened fractures are visible. On the northeastern slope, slope deposits are mostly a mixture of clayey silt that was formed by weathering of flysch bedrock and fragments to blocks of limestone originating from the cliffs on the top of the slope. On both slopes, different types of instabilities, according to type of movement, type of material involved and state of activity, can be found. Only in the above mentioned part of Rjecina valley, instabilities on both slopes are formed. Basic geohazard event could be movement of slope deposits towards the channel of Rjecina River. Since both slopes are at the edge of a stabile equilibrium state, preparatory factors already exist. Heavy precipitation or earthquakes may be efficient triggers of rockfalls and rockslides. Daily precipitation higher then 100 mm is frequent in this area. This could cause two secondary effects: damming of Rjecina and formation of lakes ; as well as formation of flooding wave due to destruction of natural dam, and consequently flooding of lower central area of Rijeka city.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Građevinarstvo, Rudarstvo, nafta i geološko inženjerstvo



POVEZANOST RADA


Projekti:
0195987
0119402
0114003

Ustanove:
Građevinski fakultet, Rijeka

Citiraj ovu publikaciju

Benac, Čedomir; Jurak, Vladimir; Oštrić, Maja; Ožanić, Nevenka
Qualitative assessment of geohazard in the Rječina River Valley, Croatia // IAEG 2006 Engineering geology for tomorrow's cities. Abstract of the 10th IAEG International Congress / Culshaw, Martin ; Reeves, Helen ; Spink, Tim ; Jefferson, Ian (ur.).
London: The Geological Society of London, 2006. str. 658-658 (poster, međunarodna recenzija, sažetak, ostalo)
Benac, Č., Jurak, V., Oštrić, M. & Ožanić, N. (2006) Qualitative assessment of geohazard in the Rječina River Valley, Croatia. U: Culshaw, M., Reeves, H., Spink, T. & Jefferson, I. (ur.)IAEG 2006 Engineering geology for tomorrow's cities. Abstract of the 10th IAEG International Congress.
@article{article, year = {2006}, pages = {658-658}, keywords = {geological hazards, landslides, mass movement, slope stability, floods}, title = {Qualitative assessment of geohazard in the Rje\v{c}ina River Valley, Croatia}, keyword = {geological hazards, landslides, mass movement, slope stability, floods}, publisher = {The Geological Society of London}, publisherplace = {Notthingam, United Kingdom} }
@article{article, year = {2006}, pages = {658-658}, keywords = {geological hazards, landslides, mass movement, slope stability, floods}, title = {Qualitative assessment of geohazard in the Rje\v{c}ina River Valley, Croatia}, keyword = {geological hazards, landslides, mass movement, slope stability, floods}, publisher = {The Geological Society of London}, publisherplace = {Notthingam, United Kingdom} }




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