Civil Engineer, PhD candidate
Maintenance, upgrading and extension of the Decision Support System for the management of the Athens water resource system
Duration: October 2008–November 2011
Budget: €72 000
Project director: N. Mamassis
Principal investigator: D. Koutsoyiannis
This research project includes the maintenance, upgrading and extension of the Decision Support System that developed by NTUA for EYDAP in the framework of the research project “Updating of the supervision and management of the water resources’ system for the water supply of the Athens’ metropolitan area”. The project is consisted of the following parts: (a) Upgrading of the Data Base, (b)Upgrading and extension of hydrometeorological network, (c) upgrading of the hydrometeorological data process software, (d) upgrading and extension of the Hydronomeas software, (e) hydrological data analysis and (f) support to the preparation of the annual master plans
A. Zoukos, T. Iliopoulou, P. Dimitriadis, and D. Koutsoyiannis, Global investigation of the multi-scale probabilistic behaviour of dry spells from rainfall records, European Geosciences Union General Assembly 2018, Geophysical Research Abstracts, Vol. 20, Vienna, EGU2018-17966-1, doi:10.13140/RG.2.2.13555.78886, European Geosciences Union, 2018.
Understanding and modelling the rainfall process at fine timescales has been a classic endeavor of hydrology, particularly because of its importance in everyday life, hydrological design and water resources management. At fine timescales, the rainfall process alternates between wet and dry states exhibiting pronounced clustering behavior. Herein, we employ a probabilistic characterization of rainfall intermittency as a two-state process and estimate the probability-dry across a range of timescales from minutes to months. To model the resulting multi-scale behavior, we employ a stochastic model derived from an entropy maximization framework at a multi-scale setting, which was previously found to successfully describe sub-daily rainfall in single case studies. We investigate whether the proposed model is able to capture the wide range of rainfall regimes observed worldwide and discuss its potential generality. Furthermore, we show how such a modelling approach of rainfall intermittency can prove valuable for practical purposes, such as the derivation of ombrian (intensity-duration-frequency) curves.
Full text: http://www.itia.ntua.gr/en/getfile/1824/2/documents/2018EGU_DrySpells.pdf (2215 KB)
A. Zoukos, Drought management: Comparison of California (2012-2016) and Athens (1988-1993) examples, Diploma thesis, 159 pages, Department of Water Resources and Environmental Engineering – National Technical University of Athens, Athens, November 2018.
Drought is an extreme and complicated phenomenon. Drought occurs both in high- and in low-rainfall areas. Each area perceives the phenomenon differently and its effects vary. Also it is hard to determine the start and the end of a drought incident. The variance of the drought characteristics which differ from area to area make a universal definition of drought impossible. The absence of this universal definition has made historically different approaches in management plans and polices for a drought. By examining the drought incidents of California (2012-2016) and Athens (1988-1993), we highlight those different approaches, the disputable assessments and ad hoc solutions, which are based on the definition. Due to the complicity of the California water system, we describe and examine the water infrastructure and the historical evolution of water management, in order to recognize the weaknesses of the California water system. As we assess the system we proceed to the comparison and assessment of the drought management plans. Through this procedure, we make important remarks about decision making and drought management. Finally we suggest a definition for the drought concept for the creation of drought management plans.
Full text: http://www.itia.ntua.gr/en/getfile/1911/1/documents/Thesis_Drought_Final.pdf (11139 KB)