<p>With the increasingly negative impact of climate change, there is a significant need for more accurate runoff measurements in steep-sloped catchments to understand and predict the impact of extreme weather conditions. The spatial and temporal variability of precipitation, different soil parameters, soil moisture and infiltration characteristics significantly influence the surface runoff and channel flow processes in natural catchments.</p> <p>During the last 5 years, the Faculty of Water Sciences of the University of Public Service developed a complex meteorological and hydrological monitoring system at V&#225;rv&#246;lgyi creek which is a 5.95 km<sup>2</sup> sub-catchment of V&#246;lgys&#233;gi creek watershed. The small steep-sloped experimental catchment lies on the border of Magyaregregy. This small village located in the eastern Mecsek region in the southern part of Hungary. The research program aims to better understand each runoff process element in the watershed. Five years ago, a meteorological station was installed to improve rainfall measurement accuracy. In addition to meteorological and flow measurements, soil moisture sensors were recently installed at three locations to record soil moisture data at six different depths. In this paper, we investigate the connection between soil water content and streamflow.</p> <p>The research presented in the article was carried out within the framework of the Sz&#233;chenyi Plan Plus program with the support of the RRF 2.3.1 21 2022 00008 project.</p>
<p>According to the climate change and Water Framework Directive 2000/60/EC (WFD) the analysis od the status of waterbodies and their continuous monitoring has to be carried out based on unified methodologies and standards. Individual prescriptions have to be in harmony with national and international standards, in order to ensure equal scientific value and comparability of the data. The international standard EN ISO 748 entitled &#8222;Hydrometry - Measurement of liquid flow in open channels using current-meters or floats&#8221; was issued in 2008. This standard is based on the discharge measurement methods in the European Union (EU) and it differs in some aspects from the Hungarian standard (ME-10-231-16:2009). The goal of our study was to identify and answer the questions related to the introduction of this standard into Hungarian practice. The issue is crucial for the hydrometry units of Hungarian Water Directorates, as if the introduction of a new standard is not correctly substantiated the consequences can include avoidable economical burdens and/or changes in the quality of data. The research was initiated and financed by the Hungarian General Directorate of Water management and targeted at the comparative analysis of the measurement and calculation methodologies of the two standards, carried out on watercourses in Hungary. Thus we have executed a series of measurements in 31 cross-sections on 18 different watercourses in Hungary. Based on our results we can state that the difference between the results of the different methodologies generally does not exceed the uncertainties originating from the measurements themselves. Under specific circumstances (e.g. very low flow velocities) the effect of the chosen methodology can be significant.</p>
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.