SHORELINE OIL TWO YEARS AFTER AMOCO CADIZ: NEW COMPLICATIONS FROM TANIO
| Autor: | Erich R. Gundlach, Serge Berne, Laurent D'Ozouville, Jerry A. Topinka |
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| Rok vydání: | 1981 |
| Předmět: | |
| Zdroj: | International Oil Spill Conference Proceedings. 1981:525-534 |
| ISSN: | 2169-3358 2169-3366 |
| DOI: | 10.7901/2169-3358-1981-1-525 |
| Popis: | The latest in a series of joint Franco-American surveys of the Amoco Cadiz (233,000 tons; March 17, 1978) spill site was conducted during May and June 1980. The purposes of this survey were to determine remaining surface oil, buried oiled sediment, oil incorporation in interstitial water, and recovery of attached macroalgae. Oil was found to persist primarily as tar blotches and black staining along exposed rocky shores and as oil-contaminated (indicated by surface sheen), interstitial water in previously heavily oiled, sheltered tidal flats. Less commonly, oil was present as asphalted sediment and oil-coated rocks in sheltered embayments. The cleaned marsh at Ile Grande remained significantly damaged from the oil; however, both upper and lower marsh grasses showed some recovery. At another marsh, no recovery occurred in uncleaned, heavily oiled areas. On sheltered rocky shores, heavily oiled algae showed rapid recolonization by Fucus; however, Ascophyllum noaosum-dominated areas showed less recovery. The Tanio oil spill on March 7, 1980 (7,000 tons lost) impacted 45 percent of the Amoco Cadiz spill site and severely complicated further differentiation of Amoco Cadiz oil in many areas. In total, 197 kilometers (km) of shoreline were impacted; 45 km were heavily oiled. Nine weeks after initial impact, Tanio oil occurred as patches of heavy oil along sheltered and exposed, rocky shores. Sand beaches and tidal flats were generally free of oil. Several hundred soldiers continued to pressure spray dispersants and water to clean up oiled areas, even in high wave energy and isolated localities. |
| Databáze: | OpenAIRE |
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