Igor Brovchenko
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View article: Simple Eulerian–Lagrangian approach to solving equations for sinking particulate organic matter in the ocean
Simple Eulerian–Lagrangian approach to solving equations for sinking particulate organic matter in the ocean Open
Gravitational sinking of particulate organic matter (POM) is a key mechanism of the vertical transport of carbon in the deep ocean and its subsequent sequestration. The size spectrum of these particles is formed in the euphotic layer by pr…
View article: Simple Eulerian-Lagrangian approach to solve equations for sinking particulate organic matter in the ocean
Simple Eulerian-Lagrangian approach to solve equations for sinking particulate organic matter in the ocean Open
A gravitational sinking of the particulate organic matter (POM) is a key mechanism of vertical transport of carbon in the deep ocean and its subsequent sequestration. The size spectrum of these particles is formed in the euphotic layer by …
View article: Supplementary material to "Simple Eulerian-Lagrangian approach to solve equations for sinking particulate organic matter in the ocean"
Supplementary material to "Simple Eulerian-Lagrangian approach to solve equations for sinking particulate organic matter in the ocean" Open
View article: Multi-model simulation of the radionuclide transfer in the Yellow Sea as a result of hypothetical atmospheric deposition
Multi-model simulation of the radionuclide transfer in the Yellow Sea as a result of hypothetical atmospheric deposition Open
After accidents at the Chornobyl NPP in 1986 and Fukushima Daiichi NPP in 2011, it became clear that there are many causes that can lead to a nuclear accident, including techno-genic and natural disasters. There is a danger of damage to th…
View article: Lagrangian radionuclide transport modeling with fast and slow adsorption-desorption processes: application to the Yellow Sea with a hypothetical atmospheric deposition 
Lagrangian radionuclide transport modeling with fast and slow adsorption-desorption processes: application to the Yellow Sea with a hypothetical atmospheric deposition  Open
To cope with the increasing threat of radioactivity release accidents in the Yellow Sea a Lagrangian radionuclide transport model in the region was recently developed coupled in off-line manner with current-wave-suspended sediment modeling…
View article: Similarities and differences in circulation beneath the Filchner-Ronne and Ross Ice Shelves: Lagrangian point of view
Similarities and differences in circulation beneath the Filchner-Ronne and Ross Ice Shelves: Lagrangian point of view Open
The two world’s largest ice shelves, the Filchner-Ronne Ice Shelf (FRIS) and the Ross Ice Shelf (RIS) account for half the area of Antarctic ice shelves. They play a key role in transforming water masses on the shelf and forming Anta…
View article: Lagrangian pathways connecting the Weddell and Bellingshausen Seas
Lagrangian pathways connecting the Weddell and Bellingshausen Seas Open
This study assesses the connectivity of currents around the Antarctic Peninsula and identifies the structure of flows carrying virtual particles from the Eastern to Western Antarctic Peninsula continental shelves. We use circulation data f…
View article: Corrigendum: Transport and fate of 137Cs released from multiple sources in the North Atlantic and Arctic Oceans
Corrigendum: Transport and fate of 137Cs released from multiple sources in the North Atlantic and Arctic Oceans Open
CORRECTION article Front. Mar. Sci., 11 August 2023Sec. Ocean Observation Volume 10 - 2023 | https://doi.org/10.3389/fmars.2023.1266352
View article: Some considerations on the dependence to numerical schemes of Lagrangian radionuclide transport models for the aquatic environment
Some considerations on the dependence to numerical schemes of Lagrangian radionuclide transport models for the aquatic environment Open
Lagrangian models present several advantages over Eulerian models to simulate the transport of radionuclides in the aquatic environment in emergency situations. A radionuclide release is simulated as a number of particles whose trajectorie…
View article: Lagrangian pathways under the Filchner-Ronne ice shelf and in the Weddell Sea
Lagrangian pathways under the Filchner-Ronne ice shelf and in the Weddell Sea Open
The objective of the study is to construct Lagrangian pathways under the Filchner-Ronne ice shelf (FRIS) and in the Weddell Sea using the data of numerical simulation of currents and Lagrangian numerical methods. The yearly cycled results …
View article: Long-Term Contamination of the Arabian Gulf as a Result of Hypothetical Nuclear Power Plant Accidents
Long-Term Contamination of the Arabian Gulf as a Result of Hypothetical Nuclear Power Plant Accidents Open
Long-term consequences of radionuclide contamination of the Arabian Gulf as a result of hypothetical accidents at the Bushehr and Barakah nuclear power plants (NPPs) were studied using a chain of models including the atmospheric dispersion…
View article: Dispersion of Particle‐Reactive Elements Caused by the Phase Transitions in Scavenging
Dispersion of Particle‐Reactive Elements Caused by the Phase Transitions in Scavenging Open
A generalized model of scavenging of the reactive radionuclide 239,240 Pu was developed, in which the sorption‐desorption processes of oxidized and reduced forms on multifraction suspended particulate matter are described by first‐order ki…
View article: Sediment and Radioactivity Transport in the Bohai, Yellow, and East China Seas: A Modeling Study
Sediment and Radioactivity Transport in the Bohai, Yellow, and East China Seas: A Modeling Study Open
This paper is concerned with the development of a radionuclide dispersion model for the nuclear power plants in the Bohai, Yellow, and East China seas (BYECS) characterized by high turbidity and multi-scale circulations, focusing on the co…
View article: Lagrangian pathways under the Filchner-Ronne Ice Shelf and in the Weddell Sea
Lagrangian pathways under the Filchner-Ronne Ice Shelf and in the Weddell Sea Open
<p>The study’s objective is to construct Lagrangian pathways under the Filchner-Ronne Ice Shelf (FRIS) and in the Weddell Sea using the data of numerical simulation of currents and Lagrangian numerical methods. The results of m…
View article: Assessment of the excess mortality in Ukraine caused by COVID-19
Assessment of the excess mortality in Ukraine caused by COVID-19 Open
Demographic statistics of Ukraine and other countries of the world indicate that the impact of the SARS-CoV-2 pandemic on mortality is not limited only to COVID-19 fatalities. Analysis of all-cause mortality statistics allows for examining…
View article: Transport and Fate of 137Cs Released From Multiple Sources in the North Atlantic and Arctic Oceans
Transport and Fate of 137Cs Released From Multiple Sources in the North Atlantic and Arctic Oceans Open
The North Atlantic and Arctic oceans, along with the North Pacific, are the main reservoirs of anthropogenic radionuclides introduced in the past 75 years. The POSEIDON-R compartment model was applied to the North Atlantic and Arctic ocean…
View article: Excess Deaths associated with the COVID-19 Pandemic in Ukraine in 2020
Excess Deaths associated with the COVID-19 Pandemic in Ukraine in 2020 Open
COVID-19 related mortality has been understudied in Ukraine. As part of a World Bank project, we estimated excess mortality in Ukraine during 2020. Data on all deaths registered in government-controlled Ukraine from 2016-2020 (N=2,946,505)…
View article: Scavenging of radionuclides in multicomponent medium with first-order reaction kinetics: Lagrangian and Eulerian modeling
Scavenging of radionuclides in multicomponent medium with first-order reaction kinetics: Lagrangian and Eulerian modeling Open
<p>A process of the removal of dissolved elements in the ocean by adsorption onto sinking particulate matters (scavenging) is studied analytically and using Lagrangian and Eulerian numerical methods. The generalized model of scavengi…
View article: Modelling seasonal and intraseasonal variations of circulation,temperature, salinity and sea level in the Bellingshausen Seaand on the Antarctic Peninsula shelf
Modelling seasonal and intraseasonal variations of circulation,temperature, salinity and sea level in the Bellingshausen Seaand on the Antarctic Peninsula shelf Open
The objective of the study is to simulate using numerical methods the seasonal and intraseasonal variations of circula-tion, sea level, temperature and salinity in the Bellingshausen Sea and on the shelf of the western part of the Antarcti…
View article: Mathematical modelling of the dynamics and containment of COVID-19 in Ukraine
Mathematical modelling of the dynamics and containment of COVID-19 in Ukraine Open
COVID-19 disease caused by the novel SARS-CoV-2 coronavirus has already brought unprecedented challenges for public health and resulted in huge numbers of cases and deaths worldwide. In the absence of effective vaccine, different countries…
View article: Mathematical modelling of dynamics and containment of COVID-19 in Ukraine
Mathematical modelling of dynamics and containment of COVID-19 in Ukraine Open
COVID-19 disease caused by the novel SARS-Cov-2 coronavirus has already brought unprecedented challenges for public health and resulted in huge numbers of cases and deaths worldwide. In the absence of effective vaccine, different countries…
View article: Sea-level, temperature and salinity change in the Black Sea simulated for period 2000-2100
Sea-level, temperature and salinity change in the Black Sea simulated for period 2000-2100 Open
Earth and Space Science Open Archive posterOpen AccessYou are viewing the latest version by default [v1]Sea-level, temperature and salinity change in the Black Sea simulated for period 2000-2100Authors Volodymyr Maderych iD Ivan Kovalets i…
View article: Long-term variations of the sea level on the western coast of the Antarctic Peninsula
Long-term variations of the sea level on the western coast of the Antarctic Peninsula Open
The aim of the study is to analyze seasonal and interannual changes in sea level on the western coast of the Antarctic Peninsula. Objects of study are seasonal and interannual variability of sea level, air temperature, pressure at sea leve…
View article: Marine radionuclide transport modelling: Recent developments, problems and challenges
Marine radionuclide transport modelling: Recent developments, problems and challenges Open
View article: Modeling Summer Circulation and Distribution of Temperature and Salinity in the Bellingshausen Sea and on the Antarctic Peninsula Shelf
Modeling Summer Circulation and Distribution of Temperature and Salinity in the Bellingshausen Sea and on the Antarctic Peninsula Shelf Open
Метою дослідження є моделювання циркуляції та розподілу температури і солоності влітку в морі Беллінсгаузена та на шельфі Антарктичного півострова. Для моделювання застосовуються чисельні методи з використанням моделі SCHISM з неструктуров…
View article: Fukushima 137Cs releases dispersion modelling over the Pacific Ocean. Comparisons of models with water, sediment and biota data
Fukushima 137Cs releases dispersion modelling over the Pacific Ocean. Comparisons of models with water, sediment and biota data Open
View article: The marine kd and water/sediment interaction problem
The marine kd and water/sediment interaction problem Open
View article: MODELLING OF MULTI-SCALE PROCESSES OF FORMATION OF BOTTOM AND SHELF WATERS IN THE SOUTHERN PART OF THE WEDDELL SEA
MODELLING OF MULTI-SCALE PROCESSES OF FORMATION OF BOTTOM AND SHELF WATERS IN THE SOUTHERN PART OF THE WEDDELL SEA Open
Метою дослідження є чисельний аналіз впливу топографії дна на потік вод, трансформованих під шельфовим льодовиком Ронне-Фільхнера (льодовикових вод), на шельфі і на материковому схилі в морі Ведделла. Для моделювання застосовуються чисельн…
View article: Migration of radioactivity in multi-fraction sediments
Migration of radioactivity in multi-fraction sediments Open
A new 3D radioactivity transport model coupled with multiscale circulation and multi-fractional sediment transport modules is presented. The sediment transport module simulates the transport of a mixture of one cohesive sediment fraction a…
View article: Internal breather-like wave generation by the second mode solitary wave interaction with a step
Internal breather-like wave generation by the second mode solitary wave interaction with a step Open
The transformation of an internal second mode solitary wave over a bottom step in a computational tank filled with a three-layer stratified fluid was studied. The convex waveforms were generated by a collapse mechanism for stratification w…