Estimating the Size of Oil Tanker Spills

Ayla Ogus Binatli ()

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Abstract: This paper estimates the determinants of the size of oil tanker spills. In the lit- erature, spill size has been estimated but the results are not very strong. A review of the existing results is provided and the determinants of spill size using a sample selection model are estimated. Estimates from a Tobit regressions are also given to serve as a basis of comparison with the earlier work. One important nding is that groundings and collisions result in larger spills if there is a spill, but the likelihood that there will be a spill due to a grounding or collision is very low. Tanker size is found to have only a marginal e ect on the probability of a spill and a dubious e ect on spill size. US ag tankers and new tankers are found to have a lower probability of causing spills compared to foreign ag and old tankers, respectively. US ag tankers do not have smaller spills when type of cargo variables are included in the analysis. So it is not straightforward to claim that US ag tankers have smaller spills due to stricter regulations. 1

Keywords: size of oil spills; sample selection models (search for similar items in EconPapers)
JEL-codes: C8 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-ene
Date: 2005-04-08
Note: Type of Document - pdf; pages: 25
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Persistent link: http://EconPapers.repec.org/RePEc:wpa:wuwpot:0504003

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