Encyclopaedia Index

TITLE : OIL SLICK MOVEMENT ON A RIVER

BY: S ZHUBRIN - CHAM MEI

DATE: SEPTEMBER 1995

PHOENICS VERSION: 1.4

DETAILS :

DETAILS OF ROSA

The following nine pictures show the predicted oil concentrations at 5-minute intervals after the occurrence of the spill.

A wind of 7 m/s is presumed to be blowing from the bottom-left corner of the pictures.

Oil concentration after 5 min
Oil concentration after 10 min
Oil concentration after 15 min
Oil concentration after 20 min
Oil concentration after 25 min
Oil concentration after 30 min
Oil concentration after 35 min
Oil concentration after 40 min
Oil concentration after 45 min

DISCUSSION

The following page contains a table showing comparisons between field measurements made at the Irtysh River on 15th August 1995 and simulated results.

Notes:-

Two simulations were made, a quick forecast and a longer calculation. Both simulations were carried out BEFORE the results were known, but with knowledge of the wind conditions.

The predicted results are in good agreement with the measurements, although the length of the slick is underpredicted. The time for the slick to arrive at a fixed point downstream was predicted very accurately, ie to the nearest minute for a 90-minute travel time.

comparison of predictions with observations

wbs