­LiDAR-based Digital Elevation Models (DEM) have become one of the most valuable sources for landslide mapping. However, the delineation of landforms is not always clear. The study aims to apply DEM for landslide mapping, verified through field investigations and geophysical surveys. Visual interpretation of DEM, manual vectorization, and electrical resistivity tomography (ERT) profiles was performed in this research. While visual interpretation proves to be a highly effective method, it is not without limitations. ERT has demonstrated strong potential as a point-specific validation tool, but has limitations on shallow landslides. The study also highlights that even the highest resolution of DEM data cannot fully capture the complexity of landslide landforms.

W oparciu o przegląd literatury zaprezentowano poglądy, jakie pojawiły się od początku XX w. o kierunkach drenażu wód powierzchniowych, ich zmianach i uwarunkowaniach Kotliny Orawsko-Nowotarskiej (Karpaty Zachodnie) w neogenie, na przełomie neogenu i czwartorzędu i w czwartorzędzie. Wyróżniono trzy grupy poglądów różnie oceniających dawne kierunki odpływu cieków z kotliny. Różnice w ocenie kierunku drenażu wód powierzchniowych w neogenie dotyczą wschodniej części Kotliny Orawsko-Nowotarskiej, z kolei ówczesny drenaż zachodniej części kotliny jest zgodnie oceniany przez cytowanych autorów. Zbieżność poglądów istnieje także w ocenie kierunków odwodnienia kotliny w czwartorzędzie, kiedy pod tym względem zaszły już mniejsze zmiany. Skutkiem zmian w kierunkach odwodnienia kotliny było, uwarunkowane tektoniką i rozwojem największego stożka glacifluwialnego, przesunięcie na zachód Europejskiego Działu Wodnego. Skala zmian w kierunkach drenażu wód powierzchniowych Kotliny Orawsko-Nowotarskiej i w wielkości przesunięcia Europejskiego Działu Wodnego od początku neogenu, jest znacznie większa niż w przypadku leżącej po słowackiej stronie Tatr Kotliny Podtatrzańskiej (Podtatranská kotlina).

Soil erosion by water is influenced by a major morphogenetic factor – precipitation. Surface runoff, initiated by rainfall, plays a key role in this process. This article addresses the effects of rainfall intensity and soil moisture on soil erosion through a series of rainfall simulations of different intensity and duration. The implementation of measurements at a research station located in the Różany Stream catchment in Poznań made it possible to study the entire water balance within the slope, including precipitation, evaporation, surface runoff and infiltration. The study included various rainfall intensities, with a focus on extreme events reflecting ongoing climate change and increasing anthropopressure. Rainfall simulations were conducted on both dry and wet ground. The results showed that increasing rainfall intensity led to greater surface runoff and soil loss. Moreover, soil moisture was identified as a critical factor affecting soil erosion, with wetter conditions reducing soil loss while increasing surface runoff.

This paper presents the rate of dune erosion on the Polish Baltic coast by storm surge Zeetje in January 2019. The results were based on field measurements on coast profiles located on dune sections of the Polish coast. Presented are the hydro-meteorological parameters of all storm surges that formed before Zeetje since Autumn 2018. The hydro-meteorological parameters of storm surges that occurred during this period were analised. The amount of dune retreat after selected surges was calculated. Following smaller storm surges in the fall of 2018, dune erosion was observed in erosional sections, where beaches are usually narrower and lower. The greatest erosion of the dunes was observed after the Zeetje storm, on average up to 3 m and a maximum of 10–12 m. The average and maximum erosion of the dunes varied on individual sandbars. The average dune erosion depended on the height of water inflow onto the shore during a storm and the height of the beach. Greater erosion occurred in sections with beach heights lower than the inflow of water during the storm. The average erosion of dunes at sea level above 1.3 m was 2.5–4.0 m. The maximum erosion values were observed on the western shores of the headlands located on the central and eastern coast. Dune erosion was not observed in places where the beach height exceeded 2.5 m above sea level and was higher than the maximum water inflow during storm Zeetje.

Within the emerging broad science of geodiversity, geomorphological diversity (geomorphodiversity) assesses the form of surface features of a place or region. This paper uses SRTM data and GIS techniques to assess geomorphological diversity of the Soutpansberg range, in Limpopo Province, South Africa. Suitable factors to assess geomorphological diversity were identified as geology, slope position, soil erodibility, landform position, relative heights, insolation, hydrography and ruggedness. Each factor was normalised to five classes by applying natural breaks. All the eight factors were weighted before overlaying. The weighting reveal that respectively, geology, slope and soils carry more weight. Ruggedness, relative height and insolation carry the least weight, in that order. The final geomorphodiversity map reveals that almost half of the Soutpansberg range has high to very high geomorphological diversity. We conclude that factor specific research can add more information to geomorphodiversity research and education.

The research analysed morphological variations of the Woji River between 1986 and 2016 using mathematical extrapolations and temporal data. A 50% reduction in the River mean channel width, fullbank discharge and the stream power was found. Channel siltation occurred due to high sediment fluxes from rapid urban processes versus reduced stream power of the river. Water hyacinth invasion, domestic waste dumps and narrow culvers constricted the river channels. Finally, an impaired river status was found and extinction projected by 2043. Recommended were correction and monitoring exercises to check activities along the river channel and to restore the head stream wetlands.

This report contains short information about the geomorphological field trip in the Gujarat Alluvial Plain. During the field trip the issues of fluvial landform and alluvial deposits of the rivers were discussed: Sabarmathi River, Mahi River, Narmada River and Karjan River. Particular attention was paid to the relief and geological structure of the Gujarat Alluvial Plain, dissected by the valleys of several rivers. The role of tectonics, sea level fluctuations and climate changes and their influence on the course of fluvial, aeolian and sea accumulation in the lower sections of river valleys was emphasized.

Zarys treści: Teren badań znajduje się około 60 km na południowy zachód od

The article presents the results of the dendrogeomorphological study of the activity of the Sawicki landslide, located in the Beskid Niski Mts (Polish Flysch Carpathians). The study was conducted within two study sites in the lower part of the landslide. The landslide movements were dated using the dendrogeomorphological method, basing on the eccentricity indicators calculated for the two coniferous species, i.e. Scots pine (Pinus sylvestris) and silver fir (Abies alba). It was found landslide activity in years:

Zarys treci: W artykule przedstawiono wyniki bada litologicznych i geochemicznych podoa badanego wykopaliskowo fragmentu osady z epoki brzu ludnoci kultury Vatya, w Kakucs-Turjn, Wgry