HR: 0800h
AN: OS51C-1318    [Abstracts]
TI: Water Quality In The Dnipro-Buh Estuary: Assessment And Management Support Tools
AU: * Zheleznyak, M
EM: mark@env.kiev.ua
AF: Ukrainian Center of Environmental & Water Projects, Glushkov av.42, Kiev, 03187 Ukraine
AU: Greenfield, J
EM: Greenfield.Jim@epamail.epa.gov
AF: USEPA Region 4, 61 Forsyth Str. SW, Atlanta, GA 30303 United States
AU: Maderych, V
EM: vlad@env.kiev.ua
AF: Ukrainian Center of Environmental & Water Projects, Glushkov av.42, Kiev, 03187 Ukraine
AU: Marlar, J
EM: Marlar.John@epamail.epa.gov
AF: USEPA (Retired), 980 College Station Road, Athens, GA 30605 United States
AU: Serenko, V
EM: V.Serenko@ulrmc.org.ua
AF: Ukrainian Land and Resource Management Center, Chokolovsky blv., 13, Kiev, 03186 Ukraine
AU: Kovba, V
EM: goam@eco31.freenet.kiev.ua
AF: Main State Ecological Inspection, Vernadsky st., Kiev, 03167 Ukraine
AU: Konovalov, S
EM: vao@alpha.mhi.iuf.net
AF: Marine Hydrophysical Institute, Kapitanskya, 2, Sevastopol, 99011 Ukraine
AU: Demchenko, R
EM: rid@env.kiev.ua
AF: Ukrainian Center of Environmental & Water Projects, Glushkov av.42, Kiev, 03187 Ukraine
AU: Dzjuba, N
EM: nata@env.kiev.ua
AF: Ukrainian Center of Environmental & Water Projects, Glushkov av.42, Kiev, 03187 Ukraine
AU: Morgunov, M
EM: mm@env.kiev.ua
AF: Ukrainian Center of Environmental & Water Projects, Glushkov av.42, Kiev, 03187 Ukraine
AB: The Dnipro-Buh Estuary (DBE) is the Black Sea largest estuary connected with the Black Sea through the Kinbourn strait. The sources of fresh water discharge are the Dnipro and Southern Buh rivers. The most important factor, which changed state of whole ecosystem, was construction of the Kakhovka Reservoir dam approximately 60 km from the mouth of the Dnipro River. The salt water intrusion that takes upstream of the Dnipro delta and hydrogen sulphide production in periods of summer hypoxia have adverse impacts on the DBE. The fresh water supply of city Mykolayv is provided from the Dnipro tributary, Ingulets River, that is impacted by the releases of mine waters. During the joint USA-Ukraine project an assessment of DBE water quality was provided based on monitoring data for 1984-2004, and new field data collection using modern techniques and equipment in 1998, 2003 and 2004. The 2D model CE-QUAL-W2 and 3D model consisting of linked hydrodynamic model THREETOX and 3-D version of US EPA WASP6 water quality model, were applied to the DBE. The models reproduced the behavior of the main nutrients as well as the summer hypoxia. A new module describing hydrogen sulphide in the DBE was developed and tested. A set of numerical experiments was carried out to predict and assess the impact of the Kakhovka Reservoir operational mode on the environmental situation in the downstream river/estuary system. The 1-D model of Ingulets River was developed and it was shown to be a useful tool to support the efficient operation of the pumping station for Mykolaev's drinking water supply. The developed set of the modeling tools are to be implemented in the regional Ukrainian State Ecological Inspection units of DBE area after the necessary staff training.
DE: 4815 Ecosystems, structure and dynamics
DE: 4842 Modeling
DE: 4857 Pollution
DE: 4546 Nearshore processes
DE: 4802 Anoxic environments
SC: Ocean Sciences [OS]
MN: 2004 AGU Fall Meeting