Browsing NILU by Author "Eidsvik, Karl J."
Now showing items 1-11 of 11
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A MODEL FOR HEAVY GAS DISPERSION IN THE ATMOSPHERE
Eidsvik, Karl J. (NILU OR;18/79, Research report, 1979)A simple model for the dispersion of heavy and cold gas cloud is developed. The results are not critically dependent upon coefficient variations. The predicted spread show good correspondence with data from Forton. -
DISPERSION OF HEAVY CLOUDS IN THE ATMOSPHERE
Eidsvik, Karl J. (NILU OR;32/78, Research report, 1978)The report describes a model for the dispersion of heavy and cold gas clouds in the atmosphere, where the essential state variables are described as simple as possible. The results do not depend critically upon uncerntaincies ... -
ESTIMATES OF CONCENTRATION FLUCTUATIONS IN AN INSTANTANEOUS CLOUD
Eidsvik, Karl J. (NILU OR;42/79, Research report, 1979)Data from transverse line sampling of continous plumes is used to estimate the stochastic structure of the concentration field. -
ESTIMATION OF TIMESERIE MODELS FOR HORIZONTAL WIND REPRESENTATIVE FOR THE NORWEGIAN WEST COAST
Eidsvik, Karl J. (NILU OR;38/80, Research report, 1980)Timeseries of horizontal wind samples at intervals of Δt = 5 min are analyzed. Power spectra are estimated via autoregressive model fitting. Akaike's identification procedure is used. -
HEAVY GAS DISPERSION MODEL WITH LIQUID RELEASE
Eidsvik, Karl J. (NILU OR;24/80, Research report, 1980)NILUs modell for spredning av tunge kalde gasser (Eidsvik, 1) er modifisert slik at utslippet kan være flytende. -
IDENTIFICATION OF MODELS FOR SOME TIME SERIES OF ATMOSPHERIC ORIGIN WITH AKAIKE'S INFORMATION CRITERION.
Eidsvik, Karl J. (NILU TN;8/79, Research report, 1979)Akaike's method for model identification has been used to identify "Markov" chain models for simple transformations of daily precipitation at three locations in southeast Norway and wind force and wave height at one location ... -
ON HORIZONTAL WIND FIELD ESTIMATION BASED ON A FEW MEASUREMENT STATIONS IN WINTER FLOW OVER OSLO.
Eidsvik, Karl J. (NILU TN;6/81, Research report, 1981)Romlig egenskaper ved vindfeltet over Oslo er analysert ved hjelp av data fra 8 målestasjoner. En homogen og isotrop. versjon av Gandins teori for optimal interpolasjon ser ut til å estimere varslingsfeil med bra nøyaktighet. -
ON OPTIMAL METEOROLOGICAL PREDICTION OF TRAJECTORIES THROUGH STOCHASTIC FLOW FIELDS
Eidsvik, Karl J. (NILU TN;3/80, Research report, 1980)The dependence of some physical processes upon environmental flow and flow prediction is approached. Procedures for obtaining sufficiently accurate prediction methods for these processes are outlined. -
ON THE PREDICTION OF HAZARD AREA RESULTING FROM A GAS RELEASE
Eidsvik, Karl J. (NILU TN;1/80, Research report, 1980)The size of the predicted hazard area following the release of a hazardous gas cloud is estimated to depend more upon prediction error for actual atmospheric flow and flow parameters than upon the accuracy of the diffusion ... -
ON THE PREDICTION OF HAZARD AREA RESULTING FROM A GAS RELEASE
Eidsvik, Karl J. (NILU OR;1/81, Research report, 1981)A synthesis of hazard area prediction followinq the release of a hazardous gas cloud is developed. At a fixed risk level the predicted hazard area is estimated to depend much upon prediction errors for actual atmospheric ... -
OVERVÅKINGSSYSTEM FOR LUFTFORURENSNINGER
Eidsvik, Karl J. (NILU TN;6/80, Research report, 1980)En skisse av hvordan et overvåkingssystem for luftforurensninger bør konstrueres, er tegnet.