Wyniki wyszukiwania - AGRO

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Urban flash flood in Gdansk - 2001. Case study

100%

Majewski W.

Meteorology Hydrology and Water Management. Research and Operational Applications

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2016

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tom 04

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nr 2

Gdańsk is an important Polish city and harbour situated on the southern coast of the Baltic Sea in the Gulf of Gdańsk, in the lowland delta at the mouth of the Vistula River. At present Gdańsk has 460 thousand inhabitants and covers an area of 262 km2. The population and the area of the city have not changed over recent decades. In previous centuries the city was affected by severe floods, which caused considerable economic damage and the death of inhabitants. Most of these floods were caused by ice jams. The complicated system of rivers and channels within the city and in its close surroundings is called the Gdańsk Water Node (GWN ). The possible directions of flood hazard are: from the sea (Martwa Vistula), and from the main Vistula channel in the case of a breached left embankment. Flood hazard from the catchment of the RC h was not considered by city authorities. In July 2001, a devastating flash flood unexpectedly hit the city of Gdańsk. The paper presents this flood as a case study, without reference to other floods of similar character. It describes the city of Gdańsk, which is an important economic, cultural, scientific, political and industrial center, the system of rivers and channels within Gdańsk which form Gdańsk Water Node (GWN ), the precipitation regime, the course of the flood, and its effects. A special project was formulated after the flood with the aim of developing the proposal of new hydraulic engineering solutions in the GWN and in the catchment of Radunia Channel to prevent similar floods in the city in cases of rainfall similar to that of 2001. The paper also presents the implementation of the proposed engineering solutions.

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Precipitation extremes during flooding in the Odra River Basin in May-June 2010

88%

Szalinska W., Otop I., Tokarczyk T.

Meteorology Hydrology and Water Management. Research and Operational Applications

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2014

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tom 02

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nr 1

Flooding in East-Central Europe in May and June 2010 also affected the Odra River Basin. Unlike a typical summer flood scenario, in 2010 intensive precipitation was observed as early as May. Also, the location of the most intensive rainfall shifted to the catchments of the right bank tributaries of the Odra River. This paper presents the climatological assessment of the precipitation totals that caused two flood waves on the Odra River. The assessment was carried out with the use of selected indicators: monthly precipitation totals, daily precipitation totals, number of days exceeding given precipitation levels, number of days with precipitation of a given probability of exceedance and intensity, duration and accumulation of precipitation for a number of consecutive wet days. The reference values for climatological indicators were developed for the period 1966-2009. The values of the selected indicators were analyzed in terms of flood hazard in relation to the hazard gradation. The results show that the observed precipitation had the character of an extreme event with respect to its magnitude, duration and spatial extent. The catchments with recognized high levels of flood hazard were affected by the flood wave. The flood situation caused by the extreme precipitation was evaluated in the context of the largest floods in this region during recent decades.

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Non-damaging flow below the Mietkow reservoir on the Bystrzyca River

88%

Kosierb R.

Meteorology Hydrology and Water Management. Research and Operational Applications

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2013

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tom 01

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nr 1

Non-damaging flow below storage reservoirs is one of the key factors which affect proper water management, especially the protection of valleys against flooding. Following analysis of river flow capacities below reservoirs it should be noted that, over the years, these capacities are subject to significant limitations. This is usually caused by inappropriate floodplain management. Buildings are often built closer to the river channels, which in consequence causes flooding of the buildings at low flood discharges. Repeated inundations and thus increasing losses oblige the local authorities to maintain low outflows from reservoirs in the first phase of the freshet, which leads to a rapid fulfillment of flood reserves of the reservoirs. Then, the culmination of flood wave often takes place when the reservoirs are filled and consequently high discharges from the reservoirs must be realized. This causes flooding of the areas and buildings below the storage reservoirs. This situation could have been avoided if the riverbeds and floodplains had been adjusted to pass non-damaging flow and adopted it as the basis for the water management of a given reservoir. A significant improvement in reduced reservoir capacities will occur if the values of non-damaging flow below the reservoirs are increased and the losses caused by flood flow are significantly reduced by appropriate spatial development of the areas below the storage reservoirs. The current non-damaging flow below the Mietków reservoir is a striking example of the issue. Three farms located within the floodplain of the Bystrzyca river have an adverse impact on water management of the reservoir when floods take place.

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Flood threat to the territories below the water dam in conditions of occurrence of extreme hydrological phenomena

88%

Madeyski M., Michalec B., Tarnawski M.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2009

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tom 41

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nr 1

5

Agro-ecological problems of soil flooding and underflooding in Ukraine

88%

Medvedev V. V., Truskavetsky R. S., Altman K. P.

Acta Agrophysica

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2000

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tom 35

Problems related to soil flooding in Ukraine are discussed. Directions of soil processes and changes in the soil properties under the influence of flooding are reviewed on the basic of an example of a chernozem-meadow soil located close to the Kremenchung water reservoir.

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ODRAFLOOD - a bilateral flood forecasting system for the Odra drainage basin

75%

Mongelkamp H.-T., Backhaus R., Dubicki A., Dybkowska-Stefek D., Ewertowski R., Gunther H., Jelonek L., Klein M., Malinowska-Malek J., Messal H., Rosenthal W., Wissen M., Wozniak Z.

Wiadomości Instututu Meteorologii i Gospodarki Wodnej

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2003

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tom 26

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nr 2

37-47

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Determining hypothetical floods in the Odra basin by means of the Cracow method and the volume formula

75%

Gadek W., Tokarczyk T.

Infrastruktura i Ekologia Terenów Wiejskich

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2015

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nr IV/4

8

Water management in the Vistula delta (Poland)

75%

Kowalik P. J.

Meteorology Hydrology and Water Management. Research and Operational Applications

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2016

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tom 04

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nr 1

This paper presents past and recent water management in the area called the Vistula Delta Fens (Żuławy Fens). This area (56 x 56 km) is located at the outlet of the Vistula River to the Baltic Sea, at the shore of the Gulf of Gdańsk. A large part of the area (30%) is located below sea level as potentially submerged depressions. A multitude of rivers, channels, ditches and pumping stations have been constructed here over several centuries. The area is characterized by highly productive alluvial soils, surface water with a high potential for fish-farming and fishery, and attractive tourist areas at the banks of the rivers and channels. Historically, floods have occurred repeatedly as a result of: (i) – breaks in the dams along big rivers, e.g. after heavy rains and high water levels (in summer); (ii) – dam breaks caused by accumulation of ice-cakes in winter or during spring times; (iii) – dam breaks after storms on the sea with increasing sea water levels at the river outlets (mainly in winter); (iv) – overflow of water into flat land after heavy rains followed by slow drainage of water from the fields, ditches, channels and pumping stations (in summer); (v) – overflow of water into depressions and swamps below sea level after interruptions of, or decreases in, the pump operations at the pumping stations. The EU directive on flood control advises that the member countries should: (i) – produce maps of the areas vulnerable to floods to facilitate communication and planning; (ii) – develop management plans for flooding events; (iii) – exchange experience and codes of good practice during flood; (iv) – facilitate a close cooperation between the scientific community and politicians in the field of flood protection; (v) – raise the level of knowledge, communication and awareness among local societies living in areas prone to flooding.

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Flood management in Azerbaijan

75%

Hasanova N., Imanov F.

Infrastruktura i Ekologia Terenów Wiejskich

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2010

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nr 11

This report examines the issues of hydrological basis and methods of flood management in the rivers of Azerbaijan and presents a review of methods of flood management applied in Azerbaijan.

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Floods in the river valleys of the Eastern Mid-European Lowland

75%

Kolodziejczyk U.

Zeszyty Naukowe Uniwersytetu Zielonogórskiego. Inżynieria Środowiska

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2004

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nr 12[131]

11

An experimantal approach to verifying prognoses of floods using unmanned aerial vehicle

75%

Witek M., Jeziorska J., Niedzielski T.

Meteorology Hydrology and Water Management. Research and Operational Applications

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2014

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tom 02

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nr 1

The Department of Geoinformatics and Cartography of the University of Wrocław, Poland, is host institution of a project, financed by the National Science Centre in Poland, whose objective is to predict riverflow in real-time. If inundation is predicted, the problem of the verification of the overbank flow prognosis arises. This verification can be attained by utilizing an unmanned aerial vehicle that may be used for remote sensing applications. The unmanned aerial vehicle in question can take sequential photos with the unprecedented resolution of 3 cm/pix. Both the resolution and the opportunity for frequent flights – due to the low cost of the entire operation – allow us to compare prediction maps showing the forecasted overbank flow during an extreme hydrological event with the true observation obtained from the air. Although such verification is site- and event-specific, it can provide us with an objective technique for checking our system in a spatial domain. The main part of the system, known as HydroProg, produces multimodel ensemble hydrograph predictions and compares single-model prognoses; visualizations of them are then published in a web map service. The spatial predictions, along with the aerial orthophoto images, will also be presented online so that the user is able to observe the functioning of the system. Regular research flights have been carried out in Kłodzko County since 2012. The study areas correspond to sites where our Partner, the County Office in Kłodzko (SW Poland) – owner of the Local System for Flood Monitoring in Kłodzko County – has automatic gauges, and thus spatially reflect the hydrologic observation network. The aforementioned aerial module is experimental and will be incorporated into the entire system.

12

Methods of strengthening flood-embankments

75%

Bobowska A.

Zeszyty Naukowe Uniwersytetu Zielonogórskiego. Inżynieria Środowiska

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2004

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nr 12[131]

13

Floods and droughts as a result of deformability of the geological environment

75%

Kapochkina A., Kapochkin B., Kucherenko N., Uchytel I.

Meteorology Hydrology and Water Management. Research and Operational Applications

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2015

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tom 03

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nr 2

The water content of the rivers is formed by atmospheric precipitation and underground waters. Influence of underground waters on water content of the rivers cannot be measured. It is shown that the volume of underground water exchange is underestimated and can be commensurable with a volume of atmospheric precipitation. Change of level of underground waters is defined by changes of volume of the geological environment during geodeformations. It is offered to consider geodeformations as one of the reasons of floods and droughts. Studied the changes the gravitational field and geodeformations during droughts and floods in the Amazon in 2005-2006. Studied the hydrological regime of the River Nile. Shows the influence of geodeformation on the level of Danube and Dniester. Proposed detailed study the causes of floods in Europe in 2002. Influence of the Earth’s surface deformation on floods and droughts is very important and requires special detailed study. Changes in volume of rocks during Earth’s surface deformation are accompanied by dilatancy which influence on the amount of drought and flooding has turned out to be significant. Study of the processes considered in the thesis gives grounds to expect that floods and droughts associated with deformations of the geological environment will be successfully predicted.

14

Local equivalent water thickness determination as a source of data for flood phenomenon observation

75%

Birylo M., Nastula J.

Papers on Global Change

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2012

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nr 19

In the paper a flood phenomenon is analyzed. For this purpose data from GRACE satellites (Gravity Recovery and Climate Experiment) was used. Filtered data presented in a form of millimeters of Equivalent Water Thickness (EWT) was interpolated in places where flood in 2010 had happened (south of Poland). On a basis of graph where time series of EWT were presented, some conclusions were made. For the thesis confirmation meteorological WGHM and hydrological NOAA models were added to the GRACE model.

15

Towards natural flood reduction strategies: introduction to Ecoflood special feature

75%

Kotowski W., Okruszko T.

Journal of Water and Land Development

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2004

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nr 08

16

What has changed in France in coastal flood risk management after Xynthia storm

75%

Cunge J., Erlich M.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2014

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tom 46

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nr 3

One year after the Xynthia storm surge, which struck the Vendée and the Charente-Maritime counties of the French Atlantic Coast in the night of 27/28 February 2010, French authorities implemented a national plan for mitigation and management of the flash submersions (MEDDTL 2011). In this paper authors analyse partial results of this plan after almost three years of its effectiveness in the perspective of Xynthia catastrophic event, but also taking into account other dramatic coastal submersions, which occured during winter 2014 in the same region.

17

New soil improving agents for accelerated cultivation of soils with low fertility or damaged

75%

Bambalov N., Sokolov G.

International Agrophysics

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1998

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tom 12

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nr 4

18

Natural and anthropogenic causes and effects of floods and other disastrous events in Poland

75%

Debicki R.

International Agrophysics

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1998

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tom 12

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nr 4

19

Report on the development of the Vistula River plume in the coastal waters of the Gulf of Gdańsk during the May 2010 flood

63%

Zajaczkowski M., Darecki M., Szczucinski W.

Oceanologia

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2010

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tom 52

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nr 2

311-317

The hydrological conditions, suspended matter concentrations and vertical par- ticulate matter flux were measured as the River Vistula flood wave (maximum discharge) was flowing into the southern part of the Gulf of Gdańsk on 26 May 2010. Extending offshore for several tens of kilometres, the river plume was well stratified, with the upper layer flowing away from the shore and the near-bottom water coastwards.

20

Grain size distribution of suspended sediment during rainfall and snowmelt floods in small lowland river

63%

Hejduk L., Hejduk A., Banasik K.

Electronic Journal of Polish Agricultural Universities. Series Environmental Development

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2006

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tom 09

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nr 2

This paper present information on particle size variation during rainfall and snowmelt flood from the small agricultural catchment. The grain size distribution during two rainfall, three snowmelt and one rainfall-snowmelt flood was compared. The average percentage of clays size material (<4 µm) for all samples was 2.7%, silt size material (> 4 µm and <62 µm) was 42.8% and sand (>62 µm) was 54.5%. The average median (d50) for floods ranged between 49.8 microns and 98.3 microns depend on the flood.

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