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The study on water erosion in young-glacial catchment of the Chwalimski Potok (upper Parsȩta tributary, Western Pomerania) conducted in years 1994-96 and 2007-09 on surfaces of experimental plots under different land use, shows that the most important factors influencing the rainsplash magnitude are: 1) a type of vegetation and its stage of growth, 2) changing physical state of the ground surface, and 3) agrotechnical treatments. The study allows to compare erosion measurements taken in field during systematic stationary observations with values calculated in empirical modeling. According to the empirical model of Wainwright et al. (1985), the mean annual volume of relocated soil on a slope due to rainsplash was bracketed between 1,58 and 2,83 kg m-2. However, the field measurements taken on the black fallow revealed rainsplash erosion of 3,25 kg m-2. The use of empirical models in assessing the magnitude of rainsplash calls for detailed data on kinetic energy of rain during the study period. Source


Cieslinski J.L.,University of Bialystok | Ratkiewicz B.,University Adama Mickiewicza
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics | Year: 2010

We present two numerical schemes of high accuracy for one-dimensional dynamical systems. They are modifications of the discrete gradient method and keep its advantages, including stability and conservation of the energy integral. However, their accuracy is higher by several orders of magnitude. © 2010 The American Physical Society. Source


Bajerski A.,University Adama Mickiewicza | Siwek T.,Ostravska univerzita
Geografie-Sbornik CGS | Year: 2012

The analysis focuses on two journals: Geografie (published by the Czech Geographical Society in Czech and English) and Moravian Geographical Reports (only in English). The analysis demonstrates that the scope of both journals is only regional, due to their relatively restricted range of authors and citations: the first periodical functions mainly within Bohemia, with some overlap into other Czech regions, while the second is active primarily in Moravia, overlapping somewhat into Slovakia and Poland. Despite their status as premier Czech geographical periodicals, both journals serve mainly as conduits for the exchange of information among academics on a regional basis. Important papers presenting the results of Czech geographical research to a wide international audience are rarely featured in these journals; such research is usually published as monographs, as has been the case in the past. This paper lists the most frequently cited Czech geographers and interdisciplinary citations - especially in and from sociology and economics papers. Source


Zelazniewicz A.,Instytut Nauk Geologicznych PAN | Jastrzcbski M.,Instytut Nauk Geologicznych PAN | Redlinska-Marczynska A.,University Adama Mickiewicza | Szczepanski J.,Wroclaw University
Geologia Sudetica | Year: 2014

During the 2002 meeting of Czech, Polish and Slovak tectonic community in Żelazno, the Sudetes, the Central European Tectonic Studies Group (CETeG) was established. 12 years ago, participants of the meeting made an excursion to the eastern part of the Orlica-Śnieznik Dome (OSD), which was focused on a variety of gneisses with inserts of (U)HP eclogites and various enclaves. The 2014 meeting brought members of the CETeG to the OSD again and an accompanying field excursion was dedicated mainly to evolution of metasedimentary and metavolcanogenic rocks in the region. This paper is a short review of the results of the studies undertaken in the OSD by different research groups in the last 12 years. The review is set against a background of what we knew about the geology of the dome in 2002. A significant progress was made. P-T paths were determined for mica schists and marbles as well as for metarhyolites originated from the continental crust and metabasites derived from the mantle. New light was shed on the origin of various types gneisses in the OSD and their genetic and structural relationships. A plethora of isotopic studies helped to better constrain timing of igneous and metamor-phic events in the Orlica-Śnieznik complex. Ages clustered around 350-340 Ma are repeatedly obtained, yet scarcer older ages up to 390 Ma and their geological significance are open to debate. Tectonic evolution of the dome was revised and new geodynamic concepts were proposed. However the new data has created some new problems and some old problems are still to be resolved in the future. Source


Duczmal-Czernikiewicz A.,University Adama Mickiewicza | Suchan J.,KGHM Polska Miedz S.A.
Biuletyn - Panstwowego Instytutu Geologicznego | Year: 2015

Post-flotation ore waste facilities provide an integral part of recovery system of useful components and waste disposal. The paper presents the enrichment factors for metals concentrated in sediments that were deposited in waste facilities constructed in the old and new copper districts in Lower Silesia. The enrichment factors were calculated with respect to the chemical composition of soils in the area of their occurrence. Copper and lead indicate the highest enrichment coefficients, while other metals have no significant concentration. Copyright © 2016 Biuletyn Pañstwowego Instytutu Geologicznego. Source

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