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Challenges in gully erosion research

100%

Poesen J.

tom Vol. 17

5-9

Although the number of publications on gully erosion has increased over the last decade, there are still various aspects of gully erosion that deserve more research efforts. Some of these, discussed in this contribution, are gully erosion in historical times, measuring techniques, processes of gully initiation, development and infilling, the interaction between gully erosion with hydrological and other soil degradation processes (e.g. piping, landsliding, tillage erosion and erosion induced by land levelling), gully erosion models, effective and efficient gully prevention and control measures. A better understanding of these aspects would allow one to better predict the impact of environmental change, gully prevention and control measures on gully erosion and gully infilling rates at a range of temporal and spatial scales and for various types of environments, and the effects of gully erosion on sediment yield, hydrological process intensities and landscape evolution.

Applications of electrochemical noise technique in stress corrosion cracking diagnosis

58%

Zielinski A.

Polish Journal of Environmental Studies

2005

tom 14

nr Suppl.1

In the paper the analysis of electrochemical current noise obtained during stress corrosion of stainless steel specimen is presented. In the contrast to the traditional approach the condition of stationarity of the records obtained is not obeyed. The changes of electrochemical properties of analysed systems are manifested in temporal variations of corresponding noise response. Thus the modification of spectral noise response is made to make this value time-dependent. Such approach can be understood as the complementary to the impedance analysis of stress corrosion phenomenon.