Flow trends in Western Hungary

2020 ◽  
Author(s):  
Kevin Mátyás ◽  
Katalin Bene ◽  
Róbert Koch
Keyword(s):  
Water Resources ◽  
River Basin Management ◽  
High Flow ◽  
Low Flow ◽  
Full Time ◽  
Available Water ◽  
Time Period ◽  
Small Streams ◽  
Time Periods ◽  
The Individual

<p>Knowledge of available water resources is essential in water management and water policy. In accordance with the EU Water Framework Directive, Hungary reviews and updates its assessment of water balance through the River Basin Management Plan (RBMP) every 7 years. In many cases, the available water resources in the RBMP for small streams are based on expert judgment, since it is not always possible to measure the actual water level or discharge. Consideration of climate change and its effects is also a big question: what are the effects of these changes on small streams, and is there a trend in the runoff?</p><p>For water managers, water scarcity and abundance are major concerns. To address this issue, our study focused on high-flow and low-flow signatures. This paper presents flow trends during the last 36 years in Western Hungary. During the period 1980-2016, daily discharge measurements were collected at 74 small streams. Twelve flow signatures were selected for trend analyses. Trends were determined for three time periods: the full measured time period at each station, and two eighteen-year periods between 1980-1998 and 1999-2016. At each location, trends were determined with 10% significance using the Mann-Kendall test.</p><p>The results show that in the low-flow signatures, no significant changes in flow trends occur at the individual watershed and regional scales during the two eighteen-year time periods, as well as during the full time period. In contrast, high-flow signatures have significantly changed for all three time periods, at both the individual and regional scales.</p><p>This work was undertaken as part of a project funded by the EFOP-3.6.1-16-2016-00017.</p>

scholarly journals VERIFICATION OF EMPIRICAL FORMULAS FOR CALCULATING MEAN LOW FLOW WITH THE VIEW TO EVALUATING AVAILABLE WATER RESOURCES

2019 ◽  
Vol 2 ◽  
pp. 83-92
Author(s):  
Dariusz Piotr Młyński ◽  
◽  
Andrzej Wałęga ◽  
Piotr Bugajski ◽  
Agnieszka Operacz ◽  
...  
Keyword(s):  
Water Resources ◽  
Low Flow ◽  
Empirical Formulas ◽  
Available Water

scholarly journals A water availability and low-flow analysis of the Tagliamento River discharge in Italy under changing climate conditions

2012 ◽  
Vol 9 (1) ◽  
pp. 139-173 ◽  
Author(s):  
L. N. Gunawardhana ◽  
S. Kazama
Keyword(s):  
River Discharge ◽  
Flow Analysis ◽  
Low Flow ◽  
Present Climate ◽  
Climate Conditions ◽  
Changing Climate ◽  
Time Period ◽  
Lower Elevation ◽  
Tagliamento River ◽  
Time Periods

Abstract. This study estimated the effects of projected variations in precipitation and temperature on snowfall-snowmelt processes and subsequent river discharge variations in the Tagliamento River in Italy. A lumped-parameter, non-linear, rainfall-runoff model with 10 general circulation model (GCM) scenarios was used to capture river response variations attributed to climate-driven changes in 3 future time periods in comparison to the present climate. Spatial and temporal changes in snow cover were assessed using 15 high-quality Landsat images collected during the 2001–2003 time period, which were further used to define different elevation bands to incorporate the elevation effects on snowfall-snowmelt processes. The 7Q10 low-flow probability distribution approximated by the Log-Pearson type III distribution function was used to examine river discharge variations with respect to climate extremes in the future. On average, the results obtained for 10 scenarios indicate a consistent warming rate for all time periods, which may increase the maximum and minimum temperatures by 2.3 °C (0.6–3.7 °C) and 2.7 °C (1.0–4.0 °C), respectively, by the end of the 21st century compared to the present climate. Consequently, the exponential rate of frost day decrease for 1 °C winter warming in lower-elevation areas is approximately three-fold (262%) higher than that in higher-elevation areas, revealing that snowfall in lower-elevation areas will be more vulnerable under a changing climate. In spite of the relatively minor changes in annual precipitation (−17.4 ~ 1.7% compared to the average of the baseline (1991–2010) period), snowfall will likely decrease by 48–67% during the 2080–2099 time period. The accumulated effects of a decrease in winter precipitation and an increase in evapotranspiration demand on winter river discharge will likely be compensated for by early snowmelt runoff due to increases in winter temperatures. Nevertheless, the river discharge in other seasons will decrease significantly, with a 59% decrease in the predicted river discharge in October over 100 yr. The low-flow analysis indicated that while the magnitude of the minimum river discharge will increase (e.g. a 25% increase in the 7Q10 estimations for the winter season in the 2080–2099 time period), the number of annual average low-flow events will also increase (e.g. 16 and 15 more days during the spring and summer seasons, respectively, in the 2080–2099 time period compared to the average during the baseline period), leading to a future with a highly variable river discharge. Moreover, a consistent shift in river discharge timing would eventually cause snowmelt-generated river discharge to occur approximately 12 days earlier during the 2080–2099 time period compared to the baseline climate. These results are expected to raise the concern of policy makers, leading to the development of new water management strategies in the Tagliamento River basin to cope with changing climate conditions.

scholarly journals AN INDIVIDUAL-INTELLECTUAL GROUND OF STUDENTS’ EDUCATIONAL CAPITAL (BASED ON THE HUMANITARIAN SPECIALTIES)

2021 ◽  
pp. 175-196
Author(s):  
Leonid Ya. Dorfman ◽  
Alexey Yu. Kalugin
Keyword(s):  
Dynamic Theory ◽  
Mediation Model ◽  
Structural Dynamic ◽  
Educational Capital ◽  
Theory Of Intelligence ◽  
Time Period ◽  
The Future ◽  
Time Periods ◽  
The Individual ◽  
Russian Education

Actuality. In the light of the changes taking place in the Russian education system, the transition to the competence paradigm, the study of resources and potentials as components of the educational capital is of particular importance. This question has not yet been sufficiently investigated empirically. Objective. To study the individual-intellectual integrations of students of humanities in 3 time periods: in the present, in the future, in the future as an updated present — both separately and together. Methods. The research is based on the ideas of the cross-theoretical integration of the theory of integral individuality by V.S. Merlin (1986) and the structural-dynamic theory of intelligence by D.V. Ushakov (2011). The study involved 252 university students from Perm, including 190 girls and 62 boys aged 17 to 22 years. Structural modeling was in use to test the hypotheses. Four models tested individual-intellectual integrations based on the time criterion. In 3 models, they were studied separately in the present, in the future, and in the future as an updated present. In the 4th, mediation model of individual-intellectual integrations, the present, the future, and the future as the updated present entered together. Results. Individual-intellectual integrations occurred in each time period separately. Results in the present led to the assumption that they reveal the resources, in the future as the background of realized potentials, in the future as an updated present as the source of updated resources. Taken together in all time periods, individual-intellectual integrations have also been found. They allowed to expand the idea of the “development spiral” based on the previous interpretation (Dorfman, Kalugin, 2020 a) and consider it according to the scheme “present — future — realized future (updated present)”. Conclusions. The results of the study indicate that individual-intellectual integrations presented in three time periods (in the present, in the future, in the future as an updated present), both separately and jointly, evidence in favor of they are a basis of resources and potentials.

scholarly journals VERIFICATION OF EMPIRICAL FORMULAS FOR CALCULATING MEAN LOW FLOW WITH THE VIEW TO EVALUATING AVAILABLE WATER RESOURCES

2019 ◽  
Vol 2 ◽  
pp. 83-92 ◽  
Author(s):  
Dariusz Piotr Młyński ◽  
◽  
Andrzej Wałęga ◽  
Piotr Bugajski ◽  
Agnieszka Operacz ◽  
...  
Keyword(s):  
Water Resources ◽  
Low Flow ◽  
Empirical Formulas ◽  
Available Water

scholarly journals MEAN REVERSION: AN INVESTIGATION FROM KARACHI STOCK EXCHANGE SECTORS

2016 ◽  
Vol 22 (4) ◽  
pp. 493-511 ◽  
Author(s):  
Jolita VVEINHARDT ◽  
Dalia STREIMIKIENE ◽  
Ahmed Raheem RIZWAN ◽  
Ahmad NAWAZ ◽  
Aniqe REHMAN
Keyword(s):  
Stock Prices ◽  
Stock Exchange ◽  
Secondary Data ◽  
Mean Reversion ◽  
Future Research ◽  
Investment Companies ◽  
Time Period ◽  
The Mean ◽  
Time Periods ◽  
The Individual

This article analyses the sectors of Karachi stock exchange in order to determine if there is any presence of mean reversion phenomenon in the stock market sectors and also an attempt to determine the pace of mean reversion. To conduct this research, secondary data is collected from the State Bank Bulletin. The frequency of the data is monthly. The variables include the individual; the data was obtained from 24 sectors returns over the period of 17 years from January 1992 to June 2008. The GARCH (1, 1) model was used to find the outcomes and the effects. In the two sectors out of 24 sectors, the GARCH and ARCH effects were significant, namely, in the Jute and Banks & Investment Companies. We studied the mean reverting process in the KSE sectors over a specific time period. Since, the mean reversion varies over different time periods. Therefore, it would be a good area for future research to study the reasons, why the market reacts differently over different time periods and to determine the reasons for such variations. The paper contributes to Stock Prices returns and investment opportunities by studying the Mean Reversion Phenomenon.

Stability and Change in Emotional Intelligence: Exploring the Transition to Young Adulthood

2005 ◽  
Vol 26 (2) ◽  
pp. 100-106 ◽  
Author(s):  
James D.A. Parker ◽  
Donald H. Saklofske ◽  
Laura M. Wood ◽  
Jennifer M. Eastabrook ◽  
Robyn N. Taylor
Keyword(s):  
High School ◽  
Emotional Intelligence ◽  
Postsecondary Education ◽  
Life Transition ◽  
Full Time ◽  
Major Life ◽  
Long Term Stability ◽  
Time Period ◽  
Transition From High School

Abstract. The concept of emotional intelligence (EI) has attracted growing interest from researchers working in various fields. The present study examined the long-term stability (32 months) of EI-related abilities over the course of a major life transition (the transition from high school to university). During the first week of full-time study, a large group of undergraduates completed the EQ-i:Short; 32 months later a random subset of these students (N = 238), who had started their postsecondary education within 24 months of graduating from high school, completed the measures for a second time. The study found EI scores to be relatively stable over the 32-month time period. EI scores were also found to be significantly higher at Time 2; the overall pattern of change in EI-levels was more than can be attributed to the increased age of the participants.

MODERN HYDROGRAPHIC AND WATER MANAGEMENT ZONING OF UKRAINE’S TERRITORY – IMPLEMENTATION OF THE WFD-2000/60/EC

2020 ◽  
Author(s):  
V.K. Khilchevskyi ◽  
Keyword(s):  
Water Management ◽  
Water Resources ◽  
River Basins ◽  
River Basin Management ◽  
The Black Sea ◽  
Main Function ◽  
River Basin Management Plans ◽  
Management Plans ◽  
The Crimea ◽  
Sea Coast

In contrast to the hydrological and hydrochemical zoning, hydrographic and water management zoning of Ukraine (2016) was created on a basin basis, taking into account the boundaries of river basins, and not physiographic zoning. The main function of hydrographic and water management zoning is water management. Primary is hydrographic zoning, and water management - based on it. The description of modern hydrographic zoning of the territory of Ukraine, approved in 2016 by the Verkhovna Rada of Ukraine and included in the Water Code of Ukraine is given. Hydrographic zoning is carried out for the development and implementation of river basin management plans. On the territory of Ukraine nine areas of river basins are allocated: Dnipro; Dnister; Danube; Southern Bug; Don; Vistula; rivers of the Crimea; rivers of the Black Sea coast; rivers of the Azov Sea coast 13 sub-basins are allocated in four river basins district. The water management zoning is described - the division of hydrographic units into water management areas, which is carried out for the development of water management balances. In the regions of the river basins in the territory of Ukraine allocated 132 water management areas, 59 of which are located in the Dnipro basin. About 9,000 bodies of surface water allocated for monitoring in Ukraine. Approved zoning is the implementation of the provisions of the EU Water Framework Directive 2000/60 / EC in the management of water resources in Ukraine. Modern hydrographic and water management zoning of the territory of Ukraine approximates the management of water resources of the state to European requirements.

Evaluation model of policy scenarios for basin-wide water resources and quality management in the tone river, Japan

1998 ◽  
Vol 38 (11) ◽  
pp. 59-67 ◽  
Author(s):  
T. Aramaki ◽  
T. Matsuo
Keyword(s):  
Water Resources ◽  
Quality Management ◽  
Evaluation Model ◽  
Sewage Treatment ◽  
River Basin Management ◽  
Balance Model ◽  
Basin Management ◽  
Management Scenarios ◽  
Domestic Use ◽  
Reservoir Construction

The objective of this study is to evaluate the conceptual scenarios of various water resources and quality management on the same level of policy decisions for optimizing river basin management. First, the water and pollutants balance model in the upper reaches of the Tone River is proposed. This model has the following characteristics: (1) Water quantity and quality at various target points of the rivers are estimated simultaneously, with a statistical evaluation for the uncertainty of hydrological events; (2) The management scenarios include selection of water savings in domestic use, reservoir construction, the expansion of sewerage coverage and so on. Several interesting results supporting policy making are obtained as follows: (1) Fifteen percent reduction in domestic use is sufficient as a substitute for new reservoir; (2) the expansion of sewage coverage in the upper reaches has large effects on reduction of BOD and COD, but the nutrient removal process should be introduced in sewage treatment plants for reduction of TN and TP.

Sign in / Sign up

Export Citation Format

Share Document