Local Depression Research Articles

Cardiopulmonary predictors of mortality in patients with COVID-19: What are the findings?

BackgroundSince 2019, coronavirus disease 2019 (COVID-19) has been the leading cause of mortality worldwide.AimsTo determine independent predictors of mortality in COVID-19, and identify any associations between pulmonary disease severity and cardiac involvement.MethodsClinical, laboratory, electrocardiography and computed tomography (CT) imaging data were collected from 389 consecutive patients with COVID-19. Patients were divided into alive and deceased groups. Independent predictors of mortality were identified. Kaplan-Meier analysis was performed, based on patients having a troponin concentration > 99th percentile (cardiac injury) and a CT severity score ≥18.ResultsThe mortality rate was 29.3%. Cardiac injury (odds ratio [OR] 2.19, 95% confidence interval [CI] 1.14–4.18; P = 0.018), CT score ≥18 (OR 2.24, 95% CI 1.15–4.34; P = 0.017), localized ST depression (OR 3.77, 95% CI 1.33–10.67; P = 0.012), hemiblocks (OR 3.09, 95% CI 1.47–6.48; P = 0.003) and history of leukaemia/lymphoma (OR 3.76, 95% CI 1.37–10.29; P = 0.010) were identified as independent predictors of mortality. Additionally, patients with cardiac injury and CT score ≥ 18 were identified to have a significantly shorter survival time (mean 14.21 days, 95% CI 10.45–17.98 days) than all other subgroups. There were no associations between CT severity score and electrocardiogram or cardiac injury in our results.ConclusionsOur findings suggest that using CT imaging and electrocardiogram characteristics together can provide a better means of predicting mortality in patients with COVID-19. We identified cardiac injury, CT score ≥18, presence of left or right hemiblocks on initial electrocardiogram, localized ST depression and history of haematological malignancies as independent predictors of mortality in patients with COVID-19.

Metal endowment and geodynamic evolution of the Late Paleozoic SEDEX deposits in South China: The Yunfu giant iron-sulfide deposit, Yunkai Domain

Metal endowment process of the clustered SEDEX (sedimentary exhalative) deposits in the Yunkai Domain (Cathaysia Block, South China) and their genetic connection with the regional tectonics is still open to debate. As a representative syngenetic deposit hosted in the black shale, the Yunfu iron-sulfide deposit (pyrite: 200 Mt @ 35%) has the potential to evaluate the missing linkage. Herein, pyrite Re–Os age and in-situ trace elements and sulfur isotope of principal ores were employed to constrain the metal accumulation process. The laminated pyrite (Py1), with the Re–Os isochron age of 303.4 ± 6.9 Ma (MSWD = 0.15), is enriched in heterogeneous distributed trace elements and highly negative heavy sulfur composition (δ34SV-CDT, mean = − 19.82‰, n = 29, standard deviation, s.d. = 0.67). This indicates the sulfur and metal precipitation was attributed for the bacterial sulfate reduction (BSR) during rapid deposition in the anoxic-seawater column of open sea at the Late Paleozoic time. The massive pyrite (Py2) hosts evenly distributed trace elements and slightly negative sulfur compositions (δ34SV-CDT, mean = − 2.00‰, n = 5, s.d. = 0.19), interpreted as further refinement and purification from Py1. To further trace its metallogenic tectonic, one hundred thirty-six (136) detrital zircon grains from ores and host rocks were selected for U–Pb and Lu–Hf isotopic analyses. Four samples of ores and ore-enveloping successions obtain the agreed youngest U–Pb ages of ∼ 430 Ma, also containing some inherited zircon grains of ca. 1200–800 Ma and ca. 2500 Ma. They possess a distinctive εHf(t) value of + 28.9 to + 40.5 for Archean, −15 to + 20 for Proterozoic and − 46.6 to − 0.2 for Paleozoic grains, respectively. This records that the episodic magmatism, including the Archean subduction, Proterozoic back-arc basin, and Paleozoic intra-continental orogeny prior to the eventual pyrite deposition, supply with substantial provenance. As a result, these collective data support that the Yunfu deposit was formed during the Late Paleozoic sedimentary exhalative deposition and hydrothermal activity in a local depression basin on the Yunkai passive continental margin without coeval magmatism.

External blast flow field evolution and response mechanism of single-layer reticulated dome structure

Single-layer reticulated dome structure are commonly high-profile building in the public and can be attractive targets for terrorist bombings, so the public can benefit from enhanced safety with a stronger understanding of the behavior of single-layer reticulated dome structure under explosion. This paper investigates the fluid-structure interaction process and the dynamic response performance of the single-layer reticulated dome under external blast load. Both experimental and numerical results shown that structural deformation is remarkably delayed compared with the velocity of blast wave, which advises the dynamic response of large-span reticulated dome structure has a negligible effect on the blast wave propagation under explosion. Four failure modes are identified by comparing the plastic development of each ring and the residual spatial geometric of the structure, i.e., minor vibration, local depression, severe damage, and overall collapse. The plastic deformation energy and the displacement potential energy of the structure are the main consumers of the blast energy. In addition, the stress performance of the vertex member and the deep plastic ratio of the whole structure can serve as qualitative indicators to distinguish different failure modes.

The Effect of Arch Cartilage Graft and Tajima Reverse U Approach in the Secondary Reconstruction of Unilateral Cleft Lip Nasal Deformity.

Secondary cleft lip nasal deformity is complicated with wide spectrum of defect and varied reconstructive procedures. There has been no unanimous solution for a given problem. In case of a localized alar depression in unilateral cleft lip nasal deformity, the conchal cartilage applied as arch graft was proposed. Patients were recruited from database of craniofacial center who received Tajima method and arch cartilage graft. Inclusion criteria were patients with unilateral cleft lip nasal deformity after skeletal maturity. Through a reverse U incision, the lower lateral cartilage was dissected and released from the skin and the contralateral cartilage. The harvested conchal cartilage graft was trimmed to 25 to 30 by 8mm in size, and inserted as arch shape overlying the cleft side lower lateral cartilage. Transdomal fixation sutures were made. Outcome assessment was performed, and the nostril and alar dimensions were measured. Thirty-nine patients were eligible for evaluation of the surgical outcome. Majority of patients underwent simultaneous lip revision (97%). No surgery-related complications were noted in this series. Satisfaction to the nasal reconstruction was reported in 85% of patients. Further minor nasal revisions were performed in 6 patients (15%). Quantitative measurement showed statistically significant improvement in nostril height, alar height and alar width after the surgery. It is concluded that the Tajima reverse U approach plus arch cartilage graft is an effective method for secondary reconstruction of the unilateral cleft lip nasal deformity in selected patients presenting with cleft side alar depression.5.

Liposuction-Like Sclerotherapy Technique for Microcystic Lymphatic Malformation

BackgroundThe treatment for microcystic lymphatic malformation (LM) remains challenging. We describe the liposuction-like sclerotherapy technique, a new treatment for extensive microcystic LM.MethodsLM data was retrospectively reviewed. This study included patients with a microcystic LM component treated by liposuction-like technique with bleomycin sclerotherapy.ResultsBetween June 2016 and October 2019, 39 consecutive patients (male/female ratio: 21:18; mean age, 33.6 months; range: 5 months to 15 years) with microcystic LM were treated by liposuction-like sclerotherapy (LS-LS) technique. Fifty-six sessions of LS-LS were performed (mean of 1.44 sessions per patient; range: one to four sessions). Follow-up ranged 6-30 months (mean of 21 months). We observed no major complications. Transient minor complications included: postoperative noninfectious fever, vomiting, temporary skin edema, pigmentation, mild local depressions, and/or irregularities, and a small hyperpigmented scar at the incision. No postoperative infection, skin ulcer, or necrosis occurred. The patients’ symptoms were successfully resolved or stable. A sub-complete response and partial response were observed for 26 (76%) and 13 patients (33%), respectively.ConclusionThe LS-LS technique for microcystic LMs is safe, feasible, and effective. This technique is an effective intervention with which it is possible to manage and potentially cure microcystic LM clinically.

Simultaneous Observations of EMIC‐Induced Drifting Electron Holes (EDEHs) in the Earth's Radiation Belt by the Arase Satellite, Van Allen Probes, and THEMIS

AbstractWe present an observation of rapid flux depressions in relativistic electrons, which is referred to as “EMIC‐induced drifting electron holes (EDEHs).” The Arase, Van Allen Probes, and THEMIS detected simultaneously electron flux fluctuations. The time variation of flux shows depressions of 1‐min scale with energy dispersion, which appear only in the relativistic energy range and small pitch angles. These characteristics of the flux depression indicate that electromagnetic ion cyclotron waves caused pitch angle scattering on a short time scale in a longitudinally limited region. The Arase satellite detected the local depression of the phase space density of 1,000 MeV/G electron, indicating that EMIC waves cause the true loss of electrons. Tracing the energy dispersion profile of EDEHs, we show that EDEHs are formed at localized region in the dusk side. Multisatellite observations demonstrate that a series of EDEHs eventually cause a substantial depression of the radiation belt on 1‐hr time scale.

Geochemical focusing and burial of sedimentary iron, manganese, and phosphorus during lake eutrophication

AbstractThe redistributive transport of sedimentary, redox‐sensitive metals such as iron (Fe) and manganese (Mn) along depth gradients in lakes or marine basins, and in particular the concentration of these elements at local depressions, has been described as “geochemical focusing.” However, the impact of variable redox conditions at the sediment–water interface on this process is not entirely understood. In this study, we report that the enrichment and burial of Fe, Mn, and associated phosphorus (P) in dimictic Lake Arendsee, Germany, has been affected by a transition from oligo‐mesotrophic to eutrophic conditions in the first half of the 20th century. Eleven sediment cores (<50 cm long) were obtained from water depths ranging from 38.5 to 49.5 m, and analyzed for their elemental composition. The older, non‐varved section, which was deposited prior ca. 1940 during oligo‐mesotrophic conditions, contains up to 10 times higher Mn and 2.5 times higher Fe contents at the deep sites compared to corresponding intervals at shallower sites. Due to their high Fe content, sediments in this interval also contain up to eight times more P, at least partly owing to vivianite authigenesis. Burial of Mn occurred via Mn‐carbonate authigenesis, possibly as rhodochrosite. Since ca. 1940, calcite and diatom varves have formed under eutrophic conditions, whereas Fe enrichment decreased and finally stopped due to fixation as pyrite in the shallow sites. Our results suggest that redox‐controlled geochemical focusing determines the distribution of Mn and Fe, as well as the occurrence of authigenic minerals such as vivianite and Mn‐carbonate.

Development of a supra-bit jet pump for opening a productive formation

The article proposes a jet pump for the bottom hole assembly. The developed supra-bit jet pump provides an additional circulation loop of the drilling fluid above the bottom of the well, which creates a local depression of the formation. In addition, the jet pump grinds the sludge injected from the annular space in the mixing chamber and feeds it to the bridging machine, which is included in the assembly, for temporary isolation of the productive formation. Isolation of the productive formation is necessary to prevent the flow of formation fluids into the wellbore when underbalanced. Grinding of the sludge in the jet pump is ensured by the cross flows of the working and injected liquid, which occur during the angular and eccentric displacement of the working nozzle of the jet pump relative to the mixing chamber. The angular and eccentric displacements of the working nozzle, the roughness of the flowing part of the mixing chamber and the diffuser, at which the pressure losses in the jet pump are insignificant, have been determined. Recommendations are proposed for increasing the efficiency of the jet pump in case of non-stationary operation at the bottom of the well, which occurs as a result of ground vibrations of a roller cone bit and uneven supply of working fluid by mud pumps.

Localization of oil and gas deposits depending on the types of new structures on the territory of the West Siberian plate

The division of deposits by types of hydrocarbons on the territory of the West Siberian Plate allowed us to identify three areas: Yamalo-Gydan, where gas and gas condensate fields are concentrated, Nadym-Taz with a mixed type of deposits and the Latitudinal Ob region, where oil fields predominate. These areas are confined to certain neotectonics areas. Comparison of the location of hydrocarbon deposits with the latest structures allowed us to establish signs of their localization both within each of the regions and in general for the territory of the West Siberian Plate. It is recorded that oil and gas fields are confined mainly to the areas of the newest regional inherited depressions, faults with a shear component of the northwestern and northeastern strike, areas with high (66–100%) and low (0–33%) lineament density, depressions-valleys separating the newest regional and local structures and the boundaries of local uplifts and depressions.

ECOLOGICAL-HYDRO-GEOMECHANICAL CONSEQUENCES OF THE FILTRATION STRUCTURE REFORMING IN THE ROCK MASSIF OF THE WESTERN DONBAS

A study was carried out to assess the ecological-hydro-geomechanical consequences of the filtration structure reformation of the rock massif during underground coal mining, using as an example the territories of Western and Central Donbas regions. A complex of problems of the geological environment transformation during mining has been determined. They are associated with: compaction of sedimentary deposits caused by groundwater pumping out; effect of unauthorized formation of suffusion channels system with a different order and differentiated permeability that occurred in the space above the mine workings, which complicates the filtration conditions of the coal-bearing massif natural structure; increase in rock mass fracturing under the influence of horizontal alternating deformations with multiple stage-by-stage substitution of compression zones with extension zones and vice versa (in the process of mining) and generating a quasi-regular network of vertically oriented man-made reservoirs. It has been established that as a result of the groundwater intensive exploitation in the course of mine drainage and water intake activities, both single depression surfaces as well as local depression craters and water rise in various water-bearing horizons were formed. Their general changes and sizes have practically not changed in recent years, which indicates a quasi-stationary regime of groundwater and that water intake in a large area is practically compensated by natural resources. It has been reported that during the long-term period of the depression funnel formation, the groundwater contour was pulled up from the north (the area of the Orel River). Thus, in the conditions of coal mining in the mines of Western Donbass, the river does not receive feeding from the catchment area and becomes shallow. On the other hand, the "wet conservation" of mines will further reduce the revenue side of the river's water balance, since most of the water will be used for flooding. Problems with shallowing are not only experienced by Orel River but also by Samara River. In the zone of local depression fall villages Braginovka and Petropavlovka, and Shevchenko farm. It is concluded that there is a need for comprehensive monitoring of geomechanical, hydrogeological, geochemical and environmental processes both at the completion of the coal mines development and during the mine workings flooding. Such monitoring will make it possible to assess in a timely manner the nature and scale of changes of the geofiltrational and geomechanical characteristics in the rock mass, disturbed by operational work for a long time. 

Soil Surface Micro-Topography by Structure-from-Motion Photogrammetry for Monitoring Density and Erosion Dynamics

Soil erosion is a major threat to soil fertility, food security and water resources. Besides a quantitative assessment of soil loss, the dynamics of erosion-affected arable soil surfaces still poses challenges regarding field methods and predictions because of scale-dependent and soil management-related complex soil-crop-atmosphere processes. The objective was to test a photogrammetric Structure-from-Motion (SfM) technique for the mm-scale mapping of the soil surface micro-topography that allows the monitoring without special equipment and with widely available cameras. The test was carried out in May 2018 on three plots of 1.5 m2 (upper-, middle-, and footslope) covering surface structural features (tractor wheel lane, seed rows) along a Maize-cultivated hillslope with a coarse-textured topsoil and a runoff monitoring station. The changes in mm-scaled surface micro-topography were derived from repeatedly photographed images of the same surface area during a 2-weeks period with two rain events. A freely available SfM-program (VisualSfM) and the QGIS software were used to generate 3D-models of the surface topography. Soil cores (100 cm3) were sampled to gravimetrically determine the topsoil bulk density. The micro-topographical changes resulting from rainfall–induced soil mass redistribution within the plots were determined from the differences in SfM maps before and after rain. The largest decrease in mean soil surface elevation and roughness was observed after rain for the middle slope plot and primarily in initially less compacted regions. The spatially-distributed intra-plot changes in soil mass at the mm-scale derived from the digital micro-topography models indicated that local depressions were filled with sediments from surrounding knolls during rainfall. The estimated mass loss determined with the SfM technique decreased, if core sample-based soil settlement was considered. The effect of changes in the soil bulk density could be described after calibration also with an empirical model suggested in the Root-Zone-Water-Quality-Model. Uncertainties in the presented plot-scale SfM-technique were due to geo-referencing and the numerical limitations in the freely available SfM-software. The photogrammetric technique provided valuable information on soil surface structure parameters such as surface roughness. The successful application of SfM with widely available cameras and freely available software might stimulate the monitoring of erosion in regions with limited accessibility.

Ice Cover, Subglacial Landscape, and Estimation of Bottom Melting of Mac. Robertson, Princess Elizabeth, Wilhelm II, and Western Queen Mary Lands, East Antarctica

This study demonstrates the results of Russian airborne radio-echo sounding (RES) investigations and also seismic reflection soundings carried out in 1971–2020 over a vast area of coastal part of East Antarctica. It is the first comprehensive summary mapping of these data. Field research, equipment, errors of initial RES data, and methods of gridding are discussed. Ice thickness, ice base elevation, and bedrock topography are presented. The ice thickness across the research area varies from a few meters to 3620 m, and is greatest in the local subglacial depressions. The average thickness is about 1220 m. The total volume of the ice is about 710,500 km3. The bedrock heights vary from 2860 m below sea level in the ocean bathyal zone to 2040 m above sea level in the Grove Mountains area (4900 m relief). The main directions of the bedrock orographic forms are concentrated mostly in three intervals: 345∘–30∘, 45∘–70∘, and 70∘–100∘. The bottom melting rate was estimated on the basis of the simple Zotikov model. Total annual melting under the study area is about 0.633 cubic meters. The total annual melting in the study area is approximately 1.5 mm/yr.

Resource potential of lunar permanently shadowed regions

The lunar polar regions contain permanently shadowed regions (PSRs) or local topographic depressions that never receive direct sunlight. These environments (<110 K) have the potential to cold-trap volatile materials in the form of ice, which are essential resources for exploration and industrialization of cislunar space and the Solar System. Orbital observations and those from the LCROSS impactor experiment provide evidence of the existence of water ice and other cold-trapped volatiles in PSRs; however, constraints on volatile abundance and distribution remain ambiguous as individual observations are not always in concord. Here we compile observations indicating the presence of volatiles from ten remotely sensed datasets in 65 PSRs to estimate the locations and mass of water ice deposits. Faustini, Cabeus, de Gerlache, Shoemaker, Haworth, Sverdrup, Slater, and Amundsen are likely the most resource-rich PSRs. Based on co-locations of observations indicative of surface frost and subsurface hydrogen abundance, we find that the craters with the highest potential mass in metric tons (t) of water ice include Cabeus (~11 × 106 t), Shoemaker (~5 × 106 t), Faustini (~4 × 106 t), de Gerlache (~3 × 106 t), and Haworth (~3 × 106 t). Future prospecting of lunar volatiles and water ice is contingent on filling knowledge gaps in resource potential, notably accurate measurements of grade and depth of volatiles. Our proposed ranking and estimates for resource tonnage are a tool to guide future orbital and landed missions that could accurately determine the resource potential of PSR deposits.

Reliability and validity of a perinatal depression screening instrument in rural Mali

BackgroundIn order to reduce the burden of perinatal depression in low- and middle-income countries, health systems must be able to identify and treat women suffering from depression. The objective of our study was to develop a locally valid and reliable screening instrument for use in identifying pregnant women and mothers of young children with a local depression syndrome, dusukasi, in rural Mali. MethodsWe administered a locally adapted screening instrument containing items from the Edinburgh Postpartum Depression Scale (EPDS) and Hopkins Symptom Checklist (HSCL-25) to 180 pregnant women and mothers of children under age 2 in Sélingué, Mali to assess the instrument's psychometric properties and validity. Item Response Theory was used to develop an abbreviated version of the measure and the validity and psychometric properties of this shortened version were compared with the full-length scale. ResultsThe full 28-item scale exhibited a single factor structure with good internal consistency (Cronbach's alpha ​= ​0.92). Women who self-identified as suffering from dusukasi (n ​= ​87) in a known groups analysis to assess construct validity had significantly higher depression and anxiety symptom scores (p ​< ​0.0001) and functional impairment scores (p ​< ​0.0001) compared to women not reporting dusukasi (n ​= ​93). The shortened 16-item scale performed as well as the full scale in identifying women with dusukasi. ConclusionsConstruct validity of our adapted screening instrument was supported for identifying dusukasi in rural Malian women. Our methodology can be applied in other settings to develop similarly valid screening instruments for perinatal depression.

Location-Based Mobile Gaming and Local Depression Trends: A Study of Pokémon Go

ABSTRACT Emerging literature has begun to investigate the role of technology in public health. Yet, a minimal amount is understood about whether, how, and why digital games, notably mobile games, might affect mental health, particularly depression. In this work, we examine the effect of location-based mobile gaming on local depression trends. We measure population-level depression using a well-established mechanism from the medical and public health literature, internet search of depression-related terms. We argue that the introduction of Pokémon Go, a mobile game that encourages outdoor physical activity, face-to-face socialization, and exposure to nature, may alleviate non-clinical forms of mild depression for users playing the game. To identify the effect, we employ a difference-in-differences approach to exploit the staggered release of Pokémon Go into 166 regions in 12 English-speaking countries. We empirically document a disproportionate decrease in depression-related search in those regions where users are able to play Pokémon Go. This finding lends credence to anecdotal claims that location-based mobile games may alleviate symptoms of depression of their users, underscoring the mental health opportunities of location-based mobile gaming and creating new opportunities for information systems research.

History of the Belye Lakes (the Tsars valley, Tuva Republic, Russia) in the Late Pleistocene and Holocene

Abstract. According to the study of bottom sediments, the Belye Lakes (near the famous mound Arzhaan-2) begun to exist about 16.5 ka. The lakes formed in a local depression at the site of the alluvial fans of temporary rivers, which is marked by red sands in cores. A three-meter lacustrine stratum overlies the sands, in some places with interbeds of peat, with a variable content of organic matter and carbonates along the section. Lithological, diatom and pollen analyzes show that the lake has always been shallow. The minimum flowability of the lake, indicating drier conditions, existed 10.0-4.2 ka and for the last 2.0 ka. During the middle of the Holocene (between 8.3-4.2 ka) it could dry up temporarily.

Gravitational lens effect revisited through membrane waves

By means of experiments and curved manifold simulations, we show that wave propagation past a topological deviation on a two-dimensional flat fabric membrane is analogous to gravitational lensing. Using an ultrafast camera, we track a membrane plane wave as it crosses a local warped depression. Finite difference simulation, based on the scalar wave equation in a Schwarzschild metric, fully describes the experimental wavefront shape. Comparison between the theoretical and experimental deviation of wave geodesics from straight lines shows that (i) the nonlinear behavior of fabrics due to stretching induces second order effects only and (ii) the experimental depression is closely approximated by the Schwarzschild metric of a gravity well. The experiment demonstrates, in a simple way, how wave propagation is influenced by the topology of the transmission medium.

Geofizičko postavljanje i seizmičnost u zoni Rift Malavi, Jugoistočna Afrika, analizirano kartografskim skriptiranjem

This paper describes a scripting cartographic techniques that automatically generate maps from open source spatial data using syntax of General Mapping Tools (GMT) and R. A case study present mapping East Africa with a focus on Malawi. In this study, two different approaches of scripting cartography using R programming language and GMT were studied for geophysical analysis aimed to visualize a series of eight new maps in Malawi: topography based on the GEBCO data, seismicity, geomorphometric modeling based on SRTM-90 m (slope, aspect, hillshade and elevation) and geophysical fields: geoid based on EGM-2008 and free-air Faye's gravity based on satellite derived gravity data from CryoSat-2 and Jason-1. In contrast to previous maps of Malawi, a scripting approach was introduced as a console-based cartographic mapping developed for plotting a series of thematic maps based on the high-resolution data. The maps demonstrate correlations between the topography and tectonic faults (Malawi Rift Zone) and earthquakes in the Malawi Lake and extent of landforms. The results demonstrate strong correspondence between the topography and geophysical fields (geoid and gravity): negative values of geoid (-15 to -20) are notable over the Malawi (Nyasa) Lake which corresponds with local topographic depressions. Free-air gravity fields reach the lowest values (-50 to -100) over the Malawi Lake. Local heights in gravity are compared with topographic mountain ranges in the NW and SW of the country on the borders with Zambia and Mozambique. The location of earthquakes vary with the majority located in the north. The geomorphological landforms demonstrate variability in slope steepness and aspect orientation shown on histogram. The techniques of scripts can be used to automatically map spatial data using raster datasets for geophysical visualization, and this paper demonstrated this through a variety of map from the presented thematic series of geophysical maps of Malawi. Full scripts used for mapping are available on the author's public GitHub repository with provided link to her open access codes.

Investigation of the hydrodynamics of man-made water by remote methods (on the example of southern Kryvbas)

The purpose of this study was to identify the degree and nature of man-made changes in the condition of the hydrogeological structure of the upper part of the earth's crust in the south of the Kryvyi Rih iron ore basin (Kryvbas). Another goal was the search and localization of sources of highly mineralized waters of the studied territory. To understand the nature of the watering (dewatering) of the section, the results of mapping the deformation of the terrain on the Sentinel-1 IW SLC space radar images were used. The resulting changes in the relief of the area were compared with the results of repeated geoelectrical observations, which showed zones of the day surface to the south of the "Livoberezhny" dumps, which are subject to subsidence and have areas of local flooding and waterlogging. They are mainly associated to the complex structure of zones of tectonic disturbances, zones of intersection of Precambrian faults of sub-meridional extension and west-northwest, which affect the distribution and localization of mineralized waters. Analysis of the data of hydrogeological, hydrological, engineering-geological and geophysical studies of the territory at the end of the 20th and beginning of the 21st centuries showed the degree of change in the hydrogeological environment over several decades. A comprehensive interpretation of space radar and geophysical survey data made it possible to assess the physical processes that take place from the surface to depths of tens of meters below it. The carried out geoelectrical research made it possible to establish the width of the rock water table in the upper part of the section, which ranges from 50 to 150 m, and the presence of a local depression on the roof of the foundation, under pond "Lebiazhyi". The latter is due to the specificity of the connection (knot) of differently oriented faults, where highly mineralized waters preserved in the Kryvyi Rih fault system are still stored and accumulated in the form of lenses. The conclusion is the integration of remote methods that study various properties of the geological environment increase the possibility of operational and scientifically based identification of problems of flooding of the territory and allow to control safe activities in the zone of influence of man-made objects.

Przekształcenie obszaru wysoczyzny lessowej pod wpływem gospodarczej działalności człowieka w neoholocenie (na wybranych przykładach z okolic Mozgawy, Ponidzie Pińczowskie)

The Mozgawa area, located in the Ponidzie Pińczowskie Region (SE part of the Nida River Basin), is a very good example of response of the natural environment to the progressive human impact. The research conducted there indicates that before the appearance of the first Neolithic farmers, the relief of the area was different to the modern one. Constant and intensive agricultural use of the loess plateau and the adjacent slopes (started in the Neolithic period some 5890±100 BP) led to the filling of the valley bottoms and local depressions with deluvial deposits, the thickness of which reaches up to 12 m. The deposition of these sediments and elevation of the surface level in the subordinate areas resulted in the creation of the Mozgawka River channel since the begining of the Roman Period. Formerly it was impossible (as it was within the depression) and the runoff was only through the karst system. Since that moment it has also started the accumulation of the alluvial fan, the progradation of which leads to the pushing of the Nida River channel towards the East.