Le Cs-137 comme traceur d'evaluation de l'activite des processus de remodelage des versants dans le massif des monts Dore (Massif central, France)

• Autorzy: Kazimierz Krzemień , Wojciech Chełmicki , Mariusz Klimek

Warianty tytułu

Cs-137 Used as an Indicator of Slope Process Activity in the Monts Dore, Massif Central, France

• Języki publikacji: FR

Abstrakty

EN

The paper presents the results of an investigation into the concentration of caesium-137 in selected slope sections made in the Monts Dore (1886 m), a massif in the highest part of the French Massif Central. Existing studies define the area as a high-mountain volcanic massif influenced by marine climate. The land relief is dominated by systems of niche-hollows, sharp erosional edges, flow lines and proluvial cones. Field research conducted in the area in 1995 and 2000 revealed a great variation in the Cs-137 concentration in soils, both within investigated section and overall in the whole massif. Typically, concentration values dropped rapidly with depth. At the depth of 10-15 cm there was just 9-21 percent of the surface concentration value. The principal reason for the variation in the Caesium contamination in the slope cover is the varied intensity of the displacement of the slope material by downwash and erosion. Those processes have a varied impact on the slopes despite the binding grass vegetation. The impact is the greatest along the linear relief forms, such as slope chutes, but there are slope sections subject to very weak degradation or even stable. Overall, the rock-waste transport mechanisms are complex and related to the complex land micro-relief. The typical fine rock-waste found in the area undergoes multiple transport cycles until it reaches the slope foot and is washed into the streams. Short slopes feature less modelling than longer slopes. The field research has shown that contemporary modelling of grass-covered slopes concentrates along chutes, slope hollows and concentrated down-wash zones. Geomorphologie investigation using the caesium method has confirmed a high diversity in slope modelling in the the Monts Dore and that all kinds of chutes and flow lines constitute the most active zones of degradation in the area discussed. (original abstract)

Słowa kluczowe

EN

Soil science; Geology; Geography; Chemical elements

PL

Gleboznawstwo; Geologia; Geografia; Pierwiastki chemiczne

• Czasopismo: Prace Geograficzne / Instytut Geografii i Gospodarki Przestrzennej Uniwersytetu Jagiellońskiego
• Rocznik: 2004
• Numer: z. 113 Les transformations du milieu montagnard-Carpates, Massif central et autres montagnes d'Europe
• Strony: 27--39

Twórcy

autor

Kazimierz Krzemień

• Jagiellonian University in Krakow, Poland

autor

Wojciech Chełmicki

• Jagiellonian University in Krakow, Poland

autor

Mariusz Klimek

• Jagiellonian University in Krakow, Poland

Bibliografia

• Campbell B.L., Loughran R.J., Elliot G.L., 1982, Caesium-137 as an indicator of geomorphic processes in a drainage basin system. Australian Geographical Studies, 20.
• Chełmicki W., Święchowicz J., 1992, Application of Cs-137 and Soil Trapping Methods for Studying Slope Processes in the Carpathian Foothills, Pirineos, 139.
• Chełmicki W., Klimek M., Krzemień К., 1995, Występowanie radioizotopu 137Cs w glebach progu Pogórza Karpackiego miedzy Rabą i Uszwicą, [dans:] L. Kaszowski (ed.), Dynamika i antropogeniczne przeobrażenia środowiska przyrodniczego progu Karpat pomiędzy Rabą i Uszwicą, Instytut Geografii UJ, Kraków.
• Estienne P., 1989, Le climat, Le Puy-de-Dôme, cartes sur table, Le Puy-en-Velay.
• Froehlich W., Walling D.E., 1992, The use of fallout radionuclides in investigations of erosion and sediment delivery in the Polish Flysch Carpathians, LAHS Publ., 209.
• Kaszowski L., Krzemień К., 1989, Quelques aspects du modelé actuel des Monts Dore et des Tatras, Zesz. Nauk. UJ, Prace Geogr., 76.
• Krzemień K., Chełmicki W., 1997, Evaluation de l'érosion des sols dans le massif des Monts Dore à l'aide de la méthode Cs - 137, Gestion des espaces fragiles en moyenne montagne: Massif central - Carpates polonaises, CERAMAC 9, Clermont-Ferrand.
• Libelt P., 1995, Caractérisation des formations superficielles quaternaires dans les Monts Dore, Zeszyty Naukowe UJ, Prace Geogr., 99.
• McCallan M.E., O'Leary B.M., Rose С., 1980, Redistribution of Caesium-137 by erosion and deposition on an Australian soil, Aust. Journ. of Soil. Res, 18.
• McHenry J. R., Ritchie J. C., 1977, Physical and chemical parameters affecting transport of 137 Cs in arid watersheds. Water Res. Research, 13.
• Peterlongo J.M., 1978, Massif Central, Guides géologiques régionaux, Masson, Paris, New York, Barcelone, Milan.
• Ritchie J. C., McHenry J. R., 1975, Fallout Cs-137: A tool in conservation research. Joum. of Soil and Water Conserv., 30, 6.
• Ritchie J. C., McHenry J. R., 1978, Fallout caesium-137 in cultivated and non cultivated North-Central United States watersheds, Journ. Environ.
• Stach A., 1986, Podstawy teoretyczne i metodyczne wykorzystania radioizotopu 137Cs w badaniach geomorfologicznych. Sprawozdania Pozn. Tow. Przyj. Nauk., 106.
• Strömquist L., Jonasson CH., Robinson C., 1989, Testing 137Cs as an Indicator of Slope Process Activity in Periglacial Environments, Studia Geom. Carp.-Bale., 23.
• Święchowicz J., 2002, The influence of plant cover and land use on slope - channel decoupling in a foothill catchment: a case study from the Carpathian Foothills, Southern Ploland, Earth Surface Processes and Landforms, 27.
• Tort M., 1989, Végétation potentielle, Le Puy-de-Dôme, cartes sur table, Le Puy-en-Velay.
• Troll C, 1973, High mountain belts berween the polar caps and the equator, their definition and lower limit, Arc. Alp. Res. 5, 3, part 2.
• Walling D. E., Quine T. A., 1990, Use of Caesium-137 to Investgate Patterns and Rates of Soil Erosion on Arable Fields, [dans:] J. Boardman, I. D. L. Foster, J. A. Dearing, Soil Erosion on Agricultural Land, John Wiley & Sons.
• Veyret Y., 1981, Modelés et formations d'origine glaciaire dans le Massif central français, Atelier de reproduction des thèses, Université de Lille III, 2.