The Threats from Oil Spills: Now, Then, and in the Future
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The ongoing oil spill from the blown-out well by the name of Macondo, drilled by the ill-fated rig Deepwater Horizon, has many features in common with another blowout in the Mexican Gulf that happened three decades ago. Then the oil gushed out from the Ixtoc I well drilled by the Sedco 135-F semi-submersible rig. In the years between these catastrophes, the source and nature of oil spills have undergone large changes. Huge spills from tankers that ran aground or collided used to be what caught the headlines and caused large ecological damage. The number and size of such accidental spills have decreased significantly. Instead, spills from ageing, ill-maintained or sabotaged pipelines have increased, and places like Arctic Russia, the Niger Delta, and the northwestern Amazon have become sites of reoccurring oil pollution. As for blowouts, there is no clear trend with regard to the number of incidences or amounts of spilled oil, but deepwater blowouts are much harder to cap and thus tend to go on longer and result in the release of larger quantities of oil. Also, oil exploration and extraction is moving into ever-deeper water and into stormier and icier seas, increasing potential risks. The risk for reoccurring spills like the two huge Mexican Gulf ones is eminent and must be reduced.
KeywordsOil spills Blowouts Deepwater Horizon Ixtoc I Marine environment Pipelines Tanker accidents
- Bazilescu, I., and B. Lyhus. 1996. The Russian Arctic Oil Spill, Trade and Environment Database (TED) Case Studies, Vol. 5, Case No. 265. http://www1.american.edu/TED/komi.htm.
- Gaughran, A. 2009. Nigeria: Petroleum, pollution and poverty in the Niger Delta. Amnesty International Publications. http://www.amnesty.org/en/library/info/AFR44/017/2009/en.
- Geraci, J.R., and D.J. St. Aubins. 1990. Sea mammals and oil. Confronting the risks. London: Academic Press.Google Scholar
- GESAMP. 1977. Impact of Oil on the Marine Environment. Rep. Stud. GESAMP No. 6, 261 pp. http://www.gesamp.org/publications/publicationdisplaypages/rs6.
- GESAMP. 2007. Estimates of Oil Entering the Marine Environment from Sea-Based Activities. Rep. Stud. GESAMP No. 75, 96 pp. http://www.gesamp.org/publications/publicationdisplaypages/rs75.
- Horsman, P. 1995. Devastation from Russian Oil Spill, The Greenbase, Greenpeace. http://archive.greenpeace.org/majordomo/index-oldgopher/9505/msg00009.html. Accessed 20 June 2010.
- Jernelöv, A., R. Rosenberg, and Å. Hagström. 1975. Ecological aspects of oil pollution. Principles for advice on treatment and methods for quantitative follow-up studies. IVL Publ. B 235.Google Scholar
- Jernelöv, A., O. Lindén, and I. Rosenblum. 1976. The St. Peter Oil Spill—an ecological and socio-economic study of effects. IVL Publ. B334, Colombia–Ecuador.Google Scholar
- Jernelöv, A., and O. Lindén. 1981a. Ixtoc I: A case study of the world’s largest oil spill. Ambio 10: 299–306.Google Scholar
- Jernelöv, A., and O. Lindén. 1981b. The effects of oil pollution on mangroves and fisheries in Ecuador–Colombia. IVL Publ. B 610.Google Scholar
- Kvenvolden, K.A., and C.K. Cooper. 2002. Revised assessment of the rate at which crude oil seeps naturally into the ocean. AAPG HEDBERG CONFERENCE, 7–10 April 2002. Near-surface hydrocarbon migration: Mechanisms and seepage rates. http://www.searchanddiscovery.net/documents/abstracts/hedberg2002/kvenvolden01/kvenvolden01.htm.
- Le Billon, P. (ed.) 2005. Geopolitics of resource wars: resource depenence, governance and violence, 277 pp. New York: Frank Cass.Google Scholar
- Lindén, O., and A. Jernelöv. 1999. Krigets miljöeffekter, 121 pp. Nora, Sweden: Nya Doxa.Google Scholar
- Mitchell, R., I.R. MacDonald, and K.A. Kvenvolden. 1999. Estimation of total hydrocarbon seepage into the Gulf of Mexico based on satellite remote sensing images. Transactions, American Geophysical Union 80(49), Ocean Sciences Meeting Supplement OS242.Google Scholar
- Obot, E., Q.B. Antonio, S. Braide, M. Dore, C. Wicks, and R, Steiner. 2006. Niger Delta Natural Resource Damage Assessment and Restoration Project. http://cmsdata.iucn.org/downloads/niger_delta_natural_resource_damage_assessment_and_restoration_project_recommendation.doc. Accessed 5 Jul 2010.
- Oil Tanker Spill Statistics. 2009. The International Tanker Owners Pollution Federation. http://www.itopf.com/information-services/data-and-statistics/statistics/documents/Statspack2009-FINAL.pdf. Accessed 20 June 2010.
- San Joaquin Geological Society. 2002. The Lakeview Gusher. http://web.archive.org/web/20061019100520/http://www.sjgs.com/lakeview.html. Accessed 26 June 2010.
- Simpson, A.C. 1968. The Torrey Canyon Disaster and fisheries. Laboratory Leaflet No 18, 43 pp. Essex, UK: Fisheries Laboratory, Burnham on Crouch.Google Scholar
- U.S. Energy. 2009. http://www.eia.doe.gov/aer/txt/ptb1105.html. Accessed 5 Jul 2010.
- U.S. Minerals Management Services. 2010. http://www.gomr.mms.gov/. Accessed 29 May 2010.
- Wennergren, G., M. Notini, and A. Jernelöv. 1976. Death of long-tailed ducks caused by oil spill, Öland, February 1976. Report on field studies and probable causes to the extensive damage. IVL Publ. B 296 (In Swedish).Google Scholar