Thomas Papalaskaris

Municipality of Kavala · Division of Municipal and Technical Construction Works

Applicability of a modified portable “Parshall flume”, “small weir plate”, “small weir canal” and “transparent velocity head rod” to measure low stream flow rate in low order streams in Northern Greece.

This study demonstrates the employment of some probability distribution functions, namely, Four-Parameter SB, Kumaraswami, Normal, 2P and 3P Lognormal, Generalised Extreme Value (G.E.V.), Gumbel Max., 2P Gamma (Log-Gamma), Gamma, Pearson Type III (Gamma 3P), Log-Pearson Type III, 3P Weibull, Generalised Pareto (3P), Log-Logistic (2P) and Log-Logist...

The present paper deals with the applicability of the Meyer–Peter and Müller (MPM) bed load transport formula. The performance of the formula is examined on data collected in a particular location of Nestos River in Thrace, Greece, in comparison to a proposed Εnhanced MPM (EMPM) formula and to two typical machine learning methods, namely Random For...

«Υδρολογική ανταπαπόκριση του «Ποταμού Ελασσονίτη», πριν, κατά την διάρκεια και μετά από το συμβάν βροχόπτωσης της 20ης-23ης/03/2021», «Hydrologic response of “Elassonitis River”, prior, during and afterwards the rainfall incident of 20th-23rd/03/2021».

Only a few scientific research studies referencing extremely low flow conditions have been conducted in Greece so far. Forecasting future low stream flow rate values is a crucial and decisive task when conducting drought and watershed management plans by designing construction plans dealing with water reservoirs and general hydraulic works capacity...

Chios Island undergoes scarcity of freshwater, forcing local authorities to establish a seawater desalination plant to cope with island's water needs. Karyes village is plentiful with freshwater springs, augmented every year by the rainfall occurring over this particular district, supplying, in turn, some high-quality freshwater obtaining spots int...

Only a few scientific research studies with reference to extremely low flow regimes, have been conducted in Greece, so far. Forecasting future low stream flow rate values is a crucial and desicive task when conducting drought and watershed management plans, designing construction plans dealing with water reservoirs and general hydraulic works capac...

Chios Island, undergoes scarcity of freshwater, forcing local authoriries to establish a sea-water desalination plant to cope with island's water needs. Karyes village, is plentiful of freshwater springs, augmented every year by the rainfall occuring over this particular district, supplying, in turn, some high quality freshwater obtaining spots int...

Only a few scientific research studies, especially dealing with extremely low flow conditions, have been compiled so far, in Greece. The present study, aiming to contribute in this specific area of hydrologic investigation, generates synthetic low stream flow time series of an entire calendar year considering the stream flow data recorded during a...

Only a few scientific research studies with reference to extremely low stream flow conditions, have been conducted in Greece, so far. Forecasting future low stream flow rate values is a crucial and desicive task when conducting drought and watershed management plans, designing water reservoirs and general hydraulic works capacity, calculating hydro...

A small number of scientific research studies with reference to extremely low flow conditions, have been conducted in Greece, so far. Predicting future low stream flow rate values is an essential and of paramount importance task when compiling watershed and drought management plans, designing water reservoirs and general hydraulic works capacity, c...

In the Second EWaS International Conference (June 2016, Chania, Crete, Greece), the bed load transport formula of Meyer-Peter and Müller (1948) was calibrated with respect to the bed roughness coefficient for Nestos River. The calibration was manual and incremental, taking five measured values of bed load transport rate at a time. In contrast, the...

Only a few scientific research studies with reference to extremely low stream flow conditions, have been conducted in Greece, so far. Forecasting future low stream flow rate values is a crucial and desicive task when conducting drought and watershed management plans, designing water reservoirs and general hydraulic works capacity, calculating hydro...

A small number of scientific research studies with reference to extremely low flow conditions, have been conducted in Greece, so far. Predicting future low stream flow rate values is an essential and of paramount importance task when compiling watershed and drought management plans, designing water reservoirs and general hydraulic works capacity, c...

Only a few scientific research studies, especially dealing with extremely low flow conditions, have been compiled so far, in Greece. The present study, aiming to contribute in this specific area of hydrologic investigation, generates synthetic low stream flow time series of an entire calendar year considering the stream flow data recorded during a...

In the Second EWaS International Conference (June 2016, Chania, Crete, Greece), the bed load transport formula of Meyer-Peter and Müller (1948) was calibrated with respect to the bed roughness coefficient for Nestos River. The calibration was manual and incremental, taking five measured values of bed load transport rate at a time. In contrast, the...

The present study generates synthetic low stream flow time series of an entire calendar year considering the stream flow data recorded during two certain interval periods of the years 2016 and 2017. We examined the goodness of fit tests of six theoretical probability distributions to low stream flow data acquired at the exit of the Perigiali stream...

Water is one of the most important sources of water on earth supporting the existence of the majority of living organisms. Time series analysis, modeling and forecasting constitutes a tool of paramount importance with reference to a wide range of scientific purposes both in meteorology and hydrology (e.g. precipitation, water quality, humidity, tem...

The present study generates synthetic low stream flow time series of an entire calendar year considering the stream flow data recorded during two certain interval periods of the years 2016 and 2017. We examined the goodness of fit tests of six theoretical probability distributions to low stream flow data acquired at the exit of the Perigiali stream...

Rainfall is one of the most important sources of water on earth supporting the existence of the majority of living organisms. Time series analysis, modeling and forecasting constitutes a tool of paramount importance with reference to a wide range of scientific purposes in meteorology (e.g. precipitation, humidity, temperature, solar radiation, floo...

Rainfall is one of the most important sources of water on earth supporting the existence of the majority of living organisms. Time series analysis, modeling and forecasting constitutes a tool of paramount importance with reference to a wide range of scientific purposes in meteorology (e.g. precipitation, humidity, temperature, solar radiation, floo...

The importance of precipitation data acquisition and analysis in order to forecast several parts of climate patterns and profoundly intemperate events related to hydrological processes, (e.g. floods and droughts), has been significantly acknowledged by the involved scientific as well as governmental organizations, societies and authorities (e.g. me...

In the framework of diploma theses elaborated in the Division of Hydraulic Engineering, Department of Civil Engineering, Democritus University of Thrace, measurements of stream discharge and bed load transport rate were carried out at the outlet of the mountain part of Nestos River basin (northeastern Greece). In concrete terms, 68 measurements of...

The present study generates artificial low stream flow time series of an entire calendar year based on the stream flow data recorded during a certain period of the year 2016. We examined the goodness of fit of six theoretical probability distributions to low stream flow data acquired at the exit of the Perigiali stream, Kavala city, NE Greece water...

Rainfall is one of the most important sources of water on earth supporting the existence of the majority of living organisms. Time series analysis, modeling and forecasting constitutes a tool of paramount importance with reference to a wide range of scientific purposes in meteorology (e.g. precipitation, humidity, temperature, solar radiation, floo...

The importance of precipitation data acquisition and analysis in order to forecast several parts of climate patterns and profoundly intemperate events related to hydrological processes, (e.g. floods and droughts), has been significantly acknowledged by the involved scientific as well as governmental organizations, societies and authorities (e.g. me...

In the framework of diploma theses elaborated in the Division of Hydraulic Structures, Department of Civil Engineering, Democritus University of Thrace, measurements of stream discharge and bed load transport rate were carried out at the outlets of the mountain parts of Kosynthos River basin and Kimmeria Torrent basin (NE Greece). Specifically, 27...

Establishing an appropriate distribution to stand for the precipitation depth at various rainfall durations yields potential rainfall data which are not only crucial inputs in hydrologic design, with reference to the study of storm sewer pipe networks, bridges, culverts, artificial canals conveying water for agricultural purposes, river and riparia...

The present study examines the gravel bed load transport rate in Zygaktis River, Drama Prefecture, Northern Greece, and compares the field river bed load measurement values with those calculated by means of Meyer-Peter and Müller (1948) and Bakke et al. (1999) formulae, employing the B.A.G.S. (Bedload Assessment for Gravel-bed Streams) software gen...