Abstract
After Nakhdoka oil spill accident that was happened in 1997, 74 monitoring points have been set to observe fate of oil stranded on the beach. Life time of oil has been investigated at every study site under same surveying method. At first, attenuation was expected to be depending on NOAA's shoreline ESI ranking, but discrepancy was observed in some artificially sheltered beaches. Then, seven simplified criteria have been set to estimate length of attenuation by using quantification theory type I. They are roughness of the surface of the sediment, existence of sheltering rocks, width between backshore and foreshore, existence of manmade wave cutting structure, inclination of the beach and amount of marine debris stranded on the beach. As a result, high correlation coefficient (R2=0.70) was obtained. This result will contribute to create more reliable and easy shoreline classification.
