International Oil Spill Conference Proceedings最新文献

{"title":"Hydrodynamics and Mixing Characteristics in Different Sized Aspirator Bottles for the Water Accommodated Fraction (WAF) Tests","authors":"Cosan Daskiran, Wen Ji, Hamed Behzad, Lin Zhao, Kenneth Lee, G. Coelho, T. Nedwed, M. Boufadel","doi":"10.7901/2169-3358-2021.1.1141666","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.1141666","url":null,"abstract":"","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77829312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High Viscosity Land Based Oil Flow Model","authors":"D. Mendelsohn, E. Comerma, Matthew Bernardo, Jeremy Fontenault, S. Baboolal","doi":"10.7901/2169-3358-2021.1.1141695","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.1141695","url":null,"abstract":"\u0000 Highly viscous oil does not behave the same as other regular liquid hydrocarbon mixtures. To evaluate the effects of a potential land-based blowout on the surrounding environment, RPS implemented a multi-step approach to simulate the trajectory and fate of high viscosity oil downslope flow. If spilled on land, initially warm oil cools and tends to gel, implying a non-Newtonian flow. To predict the behavior of high viscosity oil as it flows downslope, spreads and cools, RPS developed a new unique land-based spill model. The behavior of highly viscous crude oil has many similarities to volcanic lava flows, particularly the stark changes in oil viscosity and shear stress as the fluid cools. This study describes a “lava” flow numerical model developed to simulate the response of high viscosity oils.\u0000 The viscous flow model is based on the lava model of Griffiths (2000) which simulates the unconfined motion of a Bingham fluid down a plane of constant slope. The model allows all physical and chemical parameters to vary continuously downslope. The lateral flow is assumed to cease when the cross-slope pressure gradient is balanced by the basal-yield stress also giving the height of the flow (H) on the center line of the flow as a function of shear stress. For oil flow motion the downslope pressure gradient must be greater than the oil shear stress and hence there is a critical height, based on the local oil shear stress and slope, below which there will be no downslope motion. An atmospheric heat transfer equation was applied to the oil surface as the surface boundary condition.\u0000 The model was applied to a hypothetical on land release of highly viscous oil in a one-dimensional, downslope form, where the ground slope was assumed constant along the flow path. As the oil progresses downslope, its temperature was updated each time step in each cell and used to calculate new oil properties for density, specific heat, viscosity, and shear stress. The model results provide information about the rate and total distance travelled and time for the downslope flow to stop.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79967475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding the Fates and Chemical Compositions of Weathered Oil in Coastal Marshes since the 2010 Deepwater Horizon Oil Spill","authors":"E. Overton, Buffy M. Meyer, M. S. Miles, R. Turner, P. L. Adhikari","doi":"10.7901/2169-3358-2021.1.687183","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.687183","url":null,"abstract":"\u0000 Coastal marshes were heavily impacted by the Deepwater Horizon (DWH) oil spill in 2010, with approximately 90% of shoreline impacts occurring in Louisiana's coastal wetlands. Spilled crude oils impact an environment through four major mechanisms: ecosystem exposure to reactive and toxic aromatic compounds; covering and smothering that hinders normal plant and animal physiology; depletion of dissolved oxygen; and disruption of the aquatic food web. Crude oil's ability to cause environmental harm depends upon its composition, which is a very complex mixture of many thousands of reduced carbon compounds made from the degradation of plant material deposited deep underground. This study reviews the results from the chemical characterization of petroleum hydrocarbons, at various weathering stages, in >2000 marsh surface sediments and select sediment cores samples collected from various sampling locations in Terrebonne Bay, Grand isle, and northern Barataria Bay from 2010 to 2018. The sediment samples were analyzed for target saturated alkanes, polycyclic aromatic compounds, and the forensic biomarker (hopane and sterane) compounds. The chemical characterization of the compositional changes of target compounds in DWH oil, from its pre-stranding stage just offshore in the Louisiana Bight, through stranding on marshy shorelines and through its degradation and weathering over eight years has given insights into the complexity of oil residues and potential for impacts in these varying environmental conditions. Stranded oil initially had two prominent fates: settling on surface sediment/soils of the marshes, and subsurface deposition primarily by means of settling into fiddler crab burrows. Both initial fates affected shorelines and 10–20 meters inward. Over time, surface oil residues were spread beyond initially impacted areas by Tropical Storm Isaac in 2012 and other weather events, and oil residues were quickly degraded. Subsurface stranded oil was degraded much more slowly under anaerobic conditions and some was re-released as fairly fresh oil during the coastal erosions caused by DWH surface oiling damage to the marsh plants. However, these re-releases were relatively slow and were quickly aerobically degraded once the stranded oil reached marsh surfaces. There was also evidence of anaerobic degradation of heavily weathered surface oil residues during the 2015 to 2018 timeframe. This eight-year study establishes a very complex narrative between the physical and chemical properties of stranded oil and its interactions with coastal marsh environments.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78786439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genomics Tools and Microbiota: Applications to Response in Coastal Ecosystems","authors":"J. Kostka, K. Konstantinidis, M. Huettel","doi":"10.7901/2169-3358-2021.1.688546","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.688546","url":null,"abstract":"\u0000 Microorganisms are central and cross-cutting to oil spill response strategies. Biodegradation mediated by indigenous microbial communities is the ultimate fate of the majority of petroleum (oil and gas) that enters the marine environment. Key ecosystem services provided by microbes, such as organic matter and nutrient cycling, may be adversely affected by oil contamination. The Deepwater Horizon (DWH) oil spill was the first large scale environmental disaster to which the methods of genomics were applied to determine microbial response to a major perturbation. Here we present a case study on coastal ecosystems to highlight the knowledge gained by application of genomics tools to interrogate mechanisms of petroleum hydrocarbon degradation and to elucidate impacts of oil exposure on ecosystem health and functioning.\u0000 At Pensacola Beach, results showed that oiling led to a large increase in the growth of indigenous microbes in the form of a series of bacterial blooms. Oil contamination strongly selected for microbial groups capable of hydrocarbon degradation. Oil was degraded and benthic microbial communities returned to near baseline levels approximately one year after oil came ashore. These results indicate that when small particles (< 1 cm) of weathered light oil are buried in the coastal zone, biodegradation by indigenous microbial communities is sufficient for the rapid mitigation of oil contamination after a major spill, whereas larger sand-oil-aggregates take longer to completely degrade because of their unfavorable surface to volume ratio. “Operation Deep Clean” removed these aggregates and enhanced biodegradation insofar as many larger oil aggregates were broken down into smaller ones thereby increasing the surface area available for microbial attack. For environmental managers, these results suggest that biodegradation in beach sands is relatively rapid because oxygen can easily penetrate to the buried oil, and resources may be better placed elsewhere in environments where degradation is limited by oxygen availability or microbial access to hydrocarbons. While specialist microbial groups such as nitrifiers show promise as bioindicators of oil contamination in coastal ecosystems, more work is needed to further validate these biomarkers. Despite substantial progress, a predictive understanding of the fate and impacts of oil spills remains hampered by challenges in interpreting the in situ activity and ecosystem response of benthic microbial populations. To advance this understanding, a dedicated funding mechanism is needed to support fundamental research. A polyphasic approach is encouraged that employs metagenomics in the field along with cultivation and microcosm or mesocosm experiments in the laboratory. Further, research during future disasters would be greatly facilitated by improved coordination between the emergency responders directing mitigation efforts and scientists investigating the success of those efforts.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78978381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Challenges Facing Myanmar in Developing a National Contingency Plan for Marine Pollution","authors":"K. K. Naing, K. Thū, D. Davidson","doi":"10.7901/2169-3358-2021.1.669652","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.669652","url":null,"abstract":"\u0000 Myanmar became signatory to the OPRC 1990 in December 2016 and hence requires applicable vessels, ports and offshore facility operators to develop and maintain oil spill contingency plans coordinated with the National Contingency Plan. At about the same time, a super tanker terminal was constructed at Kyaukpyu deep-seaport on the west coast of Myanmar. This project made Myanmar an oil receiver country thus raising the risk of significant oil pollution incidents. To mitigate the risk, Myanmar developed its National Contingency Plan for Marine Pollution (NCP) in order to establish a coordinated oil spill preparedness and response policy and to align with the Regional Oil Spill Contingency Plan (ROSCP) developed under the ASEAN MOU for Joint Oil Spill Preparedness and Response (ASEAN, 2014).\u0000 Even with the NCP, Myanmar is still encountering a number of challenges to be fully prepared for severe and disastrous pollution incidents. Chief among these is the establishment of a proper spill response capability including trained personnel and a stockpile of appropriate response equipment. Many options are being considered: government funding; establishing a mutual aid program led by industry; contract bases; or some combination of these.\u0000 This paper looks at the actions Myanmar is taking to develop a state of the art NCP that is appropriate for Myanmar and the Region. The paper also discusses some of the key challenges Myanmar is facing, including transboundary issues and the solutions being considered and/or adopted to address such challenges.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87516022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Forecasting System for Predicting the Dynamics of Oil Spill in a Tide-Dominated Estuary","authors":"Chijioke D. Eke, B. Anifowose, M. J. Van De Wiel, D. Lawler, M. Knaapen","doi":"10.7901/2169-3358-2021.1.684312","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.684312","url":null,"abstract":"\u0000 Crude oil is predicted to become one of the most detrimental sources of anthropogenic pollution to estuaries. A comprehensive survey of oil spill literature reveals that oil spill transport in estuaries presents a gap in academic knowledge and literature. To address this gap, we present the first detailed analysis of estuarine oil spill dynamics. We develop and analyse a range of simulations for the Humber Estuary, using TELEMAC3D; a coupled hydrodynamic and oil spill models. The river boundary of the Humber Estuary is forced by discharge data, while the offshore boundary is driven by tidal height data, including estuarine water temperature and salinity. The calibrated model shows good agreement with measured data during the validation process. Results show that: (a) the time of oil release within a tidal cycle significantly influences oil slick transport; and (b) the tidal range significantly influences oil slick impacted area and overall distance travelled, as oil slick released under spring tide is approximately double the oil slick size under neap tides and travels on average 71% farther. This study emphasises the need to: a) understand how the interaction of river discharge and tidal range influences oil slick transport; and (b) be aware of the time of release within a tidal cycle, to efficiently deal with oil spills. Findings should be useful for future operational oil spill response and could be equally applicable to other tide-dominated estuaries.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87523898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Providing a local voice for setting priorities in Alaska for human health, and social and economic disruptions from spills","authors":"D. Holen","doi":"10.7901/2169-3358-2021.1.689481","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.689481","url":null,"abstract":"","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82660129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ESA Section 7: Pre-spill Planning Updates and Emergency Consultations","authors":"Lcdr John LaMorte","doi":"10.7901/2169-3358-2021.1.687261","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.687261","url":null,"abstract":"\u0000 In 2001 the United States Coast Guard (USCG) and the Environmental Protection Agency (EPA) (collectively referred to as Action Agencies) along with the Department of the Interior's (DOI) United States Fish and Wildlife Service (USFWS), and the Department of Commerce (DOC) National Marine Fisheries Service (NMFS) (collectively referred to as the Services) signed the 2001 Inter-agency Memorandum of Agreement (MOA)1. The purpose of this 2001 MOA was to “identify and incorporate plans and procedures to protect listed species and designated critical habitat during spill planning and response activities” (USCG, EPA, USFWS, and NMFS, 2001). The procedures outlined in the 2001 MOA are based on the need to meet legal requirements set forth in the National Oil and Hazardous Substances Pollution Contingency Plan (NCP) (Title 40 of the U.S. Code of Federal Regulations, Part 300 [40 CFR § 300]), the Clean Water Act of 1972, and the Endangered Species Act (ESA) of 1973 [16 U.S.C. 1531 et seq.]. The 2001 MOA established procedures to improve the conservation of listed species and the oil spill planning and response procedures delineated in the NCP. Streamlining this process is required by section 7(a)(1) of the ESA. (USCG, 2018).\u0000 The MOA also coordinates the consultation requirements specified in the ESA regulations, 50 C.F.R. § 402, with pollution response responsibilities outlined in the NCP. It addresses three areas of oil spill response: 1) pre-spill planning activities; 2) spill response event activities; and 3) post-spill activities. (USCG, 2018). Though this document outlined procedures for how the Action Agencies and the Services were to comply with ESA Section 7, there still existed ambiguities and lack of national level guidance on how agencies were to comply with ESA Section 7. More specifically, these concerns pertained to pre-spill, emergency, and post-response operations. To alleviate the demand in the field for further ESA Section 7 guidance the National Response Team (NRT)2 established the NEC Subcommittee which quickly began developing guidance for federal agencies in order to assist these agencies maintain environmental compliance for oil and hazardous substance incident response operations. This paper will provide an update from the 2017 IOSC ESA presentation, discuss what products the NEC is currently developing and how previous NEC products have since been implemented.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89262025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Oil Spill Science Triad: Viewpoint on the Coexistence and Optimization of Models, Laboratory Tests, and Empirical Field Observations and Data for Natural Resource Damage Assessments","authors":"P. Boehm, R. Haddad","doi":"10.7901/2169-3358-2021.1.667037","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.667037","url":null,"abstract":"\u0000 This paper provides a viewpoint on ways to blend and optimize the use of various scientific tools to address information needs as part of oil spill natural resource damage assessments (NRDAs). Oil spills are complex events of multidisciplinary interest, requiring the application of a blend of established, generally accepted approaches to answer the many scientific questions related to oil spill response and NRDAs arising during and after each spill. Each spill scenario is unique and demands different information, but central to all assessment strategies are questions around the needs for and the feasibility of collecting adequate representative field data versus (or more productively in concert with) the application of spill models, remembering that models alone can't create facts. Useful information also comes from considering the degree to which the processes and ambient measures in a new spill can be represented by extrapolations of data and information from prior spills. Through a discussion of a three-part “toolkit” or “triad” applied to different types of oil spill NRDAs, this discussion offers insights and suggestions, largely from a strategic scientific perspective, for optimizing the blend of these tools to sufficiently address the assessment of injuries to natural resources so restoration can be appropriately evaluated, scaled, planned, and implemented.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74905114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Bow Jubail Oiled Wildlife Incident: Success Factors of an International Tiered Response on the Basis of Standards of Good Practice","authors":"Claude Velter, H. Nijkamp, Simon Jay","doi":"10.7901/2169-3358-2021.1.688851","DOIUrl":"https://doi.org/10.7901/2169-3358-2021.1.688851","url":null,"abstract":"\u0000 In June 2018, about 218 metric tons of heavy fuel oil gushed into the harbor of Rotterdam (NL) following the rupturing of the hull of the Bow Jubail at a jetty. Due to tidal activity, the oil from the unloaded chemical tanker quickly spread out over a 30+ km waterway where many hundreds of Mute swans were moulting at the time. A citizen's initiative quickly led to the capture of over 200 swans from the water and shores, and their transport to some bird rehab centers in the immediate neighborhood. For the authorities this massive impact that overwhelmed the available resources of the permanent centers was the trigger to activate the national oiled wildlife response plan. The activation of the national plan goes hand in hand with the decision to build a large temporary facility that needs to be fully operational within 48 hours to receive the impacted live animals for treatment. The building of the such a facility, but also the staffing that is needed to care for 600 impacted swans is a challenging task and needs fast decision taking by experts who can oversee the particular needs of swans, and are able to inform logistics about equipment and materials needed.\u0000 In parallel, a large number of experts must be mobilized who can lead and process the impacted animals once the temporary facility is ready for operations. For some part these resources were available in the Netherlands, but many more experts needed to be mobilized from abroad. The mobilization procedures of both EUROWA network and the GOWRS network were activated, leading to a large number of experts who indicated their availability. Meanwhile, the authorities took decisions on the authorization of the international mobilization, and when green lighted, the experts were asked to come over.\u0000 This paper describes the decision making in the early days, and the way that arriving experts were deployed in the facility. The use of international guidelines for this process and the ease by which international experts could work together thanks to many years of investments into local and international preparedness will be highlighted. The rehabilitation of 522 mute swans took a full month (30 days), after which 97.5% of the animals had been successfully released.","PeriodicalId":14447,"journal":{"name":"International Oil Spill Conference Proceedings","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73897307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}