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Hydraulic Engineering |
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Developed the model for optimisation of discharge measurements
on Standard Hydrometrical Network in Estonia. The model is
based on Chezy-Manning equation of steady flow structure (1992).
Provided knowledge and control of usage of different forms
of Q = f (H) ratio under different steady and unsteady, uniform
and gradually varied conditions to calculate daily discharge
at hydrometrical stations of Estonian hydrometrical network
(1983-91).
Conducted the low-flow measurements using occasional materials
for the control section creation (1992, 93); estimated of
size of reservoirs according to social necessity, economical
possibility, geo-morphology conditions and flow hydrodynamics
(1976-79);
Made projects for control sections organising and construction
at hydrometrical stations (hydrometrical bridges, culverts,
weirs and permanent current meter and self-recorder booths
maintenance) (1983-91).
Estimated of the wave size and speed of its movement over
developed area in the case of dam collapsing (1985)
Conducted
comparison and evaluated compatibility of routine discharge
measurements on Estonian standard hydrometrical network with
the Belgian methodology and computer system of Hydrological
Databank Creation and Management (1993)
Estimated the flood bed formating discharge using the graphical
method of turning point for kinetic energy curve (1979).
Estimated amount of energy and
heat that is brought by Estonian rivers into the Baltic Sea
(1995).
Backwater curves model creation and applying for IGLD 1955
datum converting into IGLD 1985 datum for Iroquois, Saunders-Moses
and Aguasabon dams (2001).
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Soil Mechanics and Groundwater
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Identified different types of soils and glacial deposits,
their permeability and water conductivity coefficient, when
opened new hydrometrical, agro-meteorological and complex
water-balance stations as well as for chosen watersheds to
estimate monthly water balance and calculate flow extremums
of different probabilities. Was responsible for measurements
of soil temperature, permafrosting, ground/underground water
level and quality at hydrometeorological network had met the
standard (Hydrometeorological Survey of Estonia, 1983-92).
Estimated average coefficients of transmissivity for 300
watersheds over Southern Ontario using GIS version of Quaternary
Geology map M: 1:1000000 (2000)
Developed
the SimpleBase model for the permanent groundwater discharge
(baseflow) separation from total flow (2001).
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Environmental chemistry |
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Was responsible for planning of river water sampling at
the Estonian hydrometeorological, lake and bog network (chemical
elements are SO4, Cl, NO3, HCO3, HCO3, oxide, NH4, Na, K,
Ca, Mg, H, pH (1983-91).
Estimated
daily loads of some contaminants into Lake Ontario via Etobicoke
Creek using obtained proportions of it in different flow component:
baseflow, intermediate and surface flow (2001): Chlorides
and mercury
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Environmental Data Collection and
Analysis |
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Was responsible for procedure of initial hydrometeorological
data production, treatment and archiving. Initial or primary
treatment included transmission from point measurements into
time and area averages. Provided the standard routine estimation
of flow of different probabilities for current year and long-term
time series of storm water, low-flow and average flow: “Hydrological
characteristics of river flow of Estonia ” for 1975-80
and 1980-85 (1983-91).
Participated in surface water passportisation: systematisation
of all water courses of former Soviet Union and
computerisation of their geomorphological, hydrological, climatologic,
social-economical and other information (1979 – Middle
Ural, 1985 - Estonia). – WRIM
gives outline of that
Participated in developing of Engineering standard of 1985:
regoinalised the distribution of different functions (normal,
lognormal, three-parametric distribution) of a random variables
(year average, flood and low-flow) (1984-85).
Provided hydrometrical network design (the representative
stations selection) using linear regression analysis (105
stations), taking into account the historical and social purposes
of their establishing; double-mass integrating curves of precipitation-river
flow (1989-90).
Used multiple linear regression analysis establishing the
connection between daily snow pack depth, air temperature,
precipitation and wind on different bog landscapes of Tooma
Bog Station (1992).
Collected
geo-morphological, -metrical and limnological data from topographical
maps, scientific investigations and literature for 300 Estonian
lakes of different origin (1992-94). –
information was used for Usable Storage coefficient method
Used simple regression analysis for gap filling of 30-years
daily flow data of Southern Ontario (2001).
Estimated
parameters of linear, logarithmic and exponential curves for
snow accumulation and melting models, exponential relation
between effective and residual saturation in unsaturated grounds
(2001). – see the Snow Model
Created the computer copy of Reservoirs of Ontario (2001)
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Environmental Impact and Risk Assessment
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Estimated risk of contamination limits exceeding against
degree of land development (1976-79)
Water balance estimation and analysing, predicting its long-term
changing (estimation of probable variations) for highly urbanised
area of Middle Ural (1976-79).
Routine monthly water balance estimation and analysing its
parameters changing (trends within 40-60 years) for selected
watersheds (15), lakes (3) and reservoirs (2) (1983-91).
Performed routine comparison of monitored data with current
standard limits: river’s and lake’s water, temperature
and chemical regime changing, euthrophication, land and water
sources development, -, (1983-91).
Managed the project of thermal contamination of Narva reservoir
by thermal power station (1987-91)
Collecting, checking, and adding information of land development
and changing of vegetation on watersheds of standard hydrometeorological
network: creating and updating of Technical Files for current
hydrological stations (1983-91).
Created monthly water balance structure for Estonia to estimate
amount of water, energy and heating brought by Estonian rivers
to the Baltic Sea, to analyse and predict possible impact
and risk to excess water quality limits depending on degree
of land development and increasing of population (1995).
Estimated the year average amount of substances transporting
along Etobicoke Creek, amount of water used in residential,
Office-business, government sectors of Etobicoke Creek (Water
Resources Inventory Model) (2000).
Daily
chlorides and mercury loads from Etobicoke Cr. Into the Lake
Ontario for 1990-97 period (2001).
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Sustainable Systems and Preventative
Engineering |
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Estimated the minimal amount of water released from a reservoir
to sustain river valley ecology using kinetic energy curves;
computed “Ice storage” for use in agriculture;
estimated the percentage of water allocated in industries
with recycling technologies (1976-79).
Estimated a water balance and its forecast as basic information
for strategy development and decision making (1979, 1995).
Was responsible for co-ordination of integrated monitoring
(meteorological, hydrometrical, water quality and aquatic
habitat) and its development at all stages from planning to
report (1983-91).
Outlined the water management plan for Aguasabon GS reservoir
taking into account environmental and development issues (2001)
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Water Supply and Wastewater Treatment
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Provided estimation of probable discharges of different
Ural and Estonian known and unknown rivers for possible water
supply and wastewater management (1976-91).
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Engineering Hydrology |
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Applied
water cycle in water balances in Water Economy Institute of
Russia (water balance and budget), Hydrometeorological Survey
and Institute in Estonia (water balance of Estonia, Usable
storage coefficient model), National Water Research Institute
in Canada (Equilibrium Water Balance Model)(1976-2001)
Estimated precipitation depth on watershed using arithmetical
average (1976-98), Thiessen method and elevation-precipitation
method (1993-98), multiple correlation method – R2 of
distance from each station to examined area (2001).
Computation of snow accumulation and melting on watershed
(Kuzmin method – 1976-91), radiation balance (1993),
day-degree, U.S. Corps of Engineers method (1992-2001).
Developed
three combined spreadsheet models of snow accumulation and
melting (“adjusted”, “simplified”
and “retention capacity” models) in NWRI (2001).
Routine estimation of infiltration coefficient at the Tooma
peat bog and Kuusiku Complex Water Balance stations depending
on initial water table level and intensity of precipitation
(1983-91). Provided a standard procedure for measurement of
water table reaction on rain event.
Implemented
the hydrological method of river routing for estimation of
the average and base flow changing from the very beginning
(head) to mouth of Etobicoke Creek taking into account geo-morphological
and hydrographical features into account (Water
Resources Inventory Model 2000, EWBM
2001).
Estimated
groundwater recharge-discharge zones, water table fluctuation
depending on air temperature and geological composition of
Etobicoke watershed using Equilibrium Water
Balance Model (2001)
Provided a standard procedure for routine measurement of
evaporation and evapotranspiration at the Tooma and Kuusiku
stations in Estonia (evaporating pans and lysimeters) (1983-91).
Estimated evapotranspiration from watersheds as a residual
of water balance equation and evaporation from lakes and reservoirs
using thermo-dynamic method (1983-91).
Developed
monthly water balance model for Beverly Swamp to estimate
evapotranspiration from the swamp and applied the usable coefficient
method to estimate flooded area and water table-outflow relationship
(1999): see Beverly Swamp project
Provided
a standard procedure of water table measurements in wells
of hydrometeorological network in Estonia, developed baseflow
separation spreadsheet model for ground flow estimation (1983-1991,
2001): see baseflow separation
project
Provided a standard procedure for stream flow measurement
at hydrometrical network in Estonia (1983-91), made measurements
of summer low-flow on unknown Estonian creeks (1992, 93).
Applied
HBV model (Sweden) for daily runoff simulation and prediction
on Estonian creeks and rivers (1995, 96)
Did geo-morphometrical measurements of lakes (28) in Karela
for stage- outflow ratio obtaining and analysing (1980).
Assessed quantitatively the regularity in stage-outflow relationship
for natural lakes of different origin. Developed
the Usable Storage Coefficient Method for water resources
estimation using geo-morphological information of examined
watershed (1992-95).
Made stream measurements (topography of valley, flow depths
and discharges) on a 5 km plots to obtain hydrodynamic parameters
of the Nadym River to estimate yearly dynamic of erosion and
channel formation (co-op program 1973, 74, 75).
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Industrial Wastewater Treatment
and Control |
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Inspected the food, liqueur and tobacco industry wastewater
treatment condition and fitting to the environmental standards
(conformance/non-conformance).
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Instrumentation and Process Control
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Provided the following accuracy of observation and measurements
on Estonian hydrometeorological network:
Precipitation (amount and form) |
3-7 % |
Snow depth (point) |
1 cm below 20 cm |
Water content of snow |
2.5 –10% |
Evaporation (point) |
2-5% |
Evapotranspiration (point) |
5-10% |
Wind speed |
0.1 m/s |
Water level |
10-20 mm |
Wave height |
10% |
Water depth |
0.1 m, 2% |
Width of water surface |
0.5 % |
Velocity of flow |
2-5% |
Discharge |
5% |
Suspended sediment concentration |
10% |
Water temperature |
0.1-0.5°C |
Ice thickness 1-2 cm, |
5% |
Provided regular control of all instruments, measurements
and computation procedures used at hydrometeorological network
of Estonia, for what planned, conducted and directed routine
inspections, seminars and inventorying of running instruments:
rain gauges, snow tubes, evaporating pans, lysimeters, anemometers,
graduated vertical staff gauges, self-recorders, wire-weight
gauges, current meters, air and water thermometers, suspend
sampler (bottle) (1983-91).
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Water Resources Engineering |
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Managed the transition from manual initial treatment of
hydrological measurements to main-frame computer (1987-89)
and then to PC using Russian software for initial treatment
of hydrological measurements and observations (1991-93)
Created specific water balance data bank of Kasari river
water basin for HBV model running and further application
of it for forecasting and runoff simulation of any unknown
Estonian river (1993-95)
Managed project of Estonian hydrometeorological databank
creation and managing using Belgian GO6 component of HOMS
Manual (1993-96)
Provided daily water balance data (precipitation, runoff,
water table, air temperature, wind) and meta-data (information
of structure of all available hydrometeorological data: synoptic,
climate, agro-meteorological, water balance and hydrometrical)
from Estonia for BALTEX (1994-96)
Developed procedure of climate, agro- and hydrometrical data
exchange for operative monthly overview of Estonian hydrometeorological
conditions (1996-97)
Provided routine daily data to assess and forecast of navigation
conditions on Emajogi and Narva Rivers (1983-91)
Provided observation and quantitative control of Tallinn
water supply system (3 reservoirs, 2 rivers and 3 channels),
routine estimation of sources of water supply for different
projects (1983-91)
Provided wave roughness, ice drifting and flimsy warning
on the Lake Peipsi.
Voluntarily
managed to create the monthly water balance from scratched
data of Beverly Swamp for Geographical Department of Toronto
University to estimate evapotranspiration and flooded area
(1999)
Created monthly water balance structure for Southern Ontario
area: from Durham to Windsor Municipalities (2001)
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Management Concepts for Engineers
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Yearly estimated and managed the human and material resources
to run the Hydrological Department of Hydrometeorological
Survey of Estonia (10 people in the office and over 120 in
subordinated network) (1983-91)
Estimated expenses and costs for all hydrometeorological
services and products to prepare them for selling to private
consulting, construction and insurance companies as well as
to estimate costs for any further internal and external hydrometeorological
projects (1985-87)
Outlined the water management plan Aguasabon GS reservoir
(2001).
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