نتایج جستجو برای: oil spill numerical model
تعداد نتایج: 2454851 فیلتر نتایج به سال:
Assessing the impacts of the Deepwater Horizon oil spill with a dependable baseline comparison can provide reliable insight into environmental stressors on organisms that were potentially affected by the spill. Fluctuating asymmetry (small, non-random deviations from perfect bilateral symmetry) is an informative metric sensitive to contaminants that can be used to assess environmental stress le...
Objectives: We analyze patterns in environmental views of Gulf Coast residents, in the wake of the 2010 oil spill. To what extent do spill-related and other environmental views vary with individual characteristics, personal experience with the spill, or characteristics of place? Methods: About 2,000 residents of selected coastal regions in Louisiana and Florida were interviewed by telephone in ...
Synthetic Aperture RADAR (SAR) imaging system is used to monitor the marine system. Oil spill pollution plays a significant role in damaging marine ecosystem. One main advantages of SAR is that it can generate imagery under all weather conditions. In a SAR image dark spots can be generated by number of phenomena. The dark spots may be of algae, low wind areas, coastal areas and oil spills. The ...
In April 2010, the Deepwater Horizon oil rig caught fire and exploded, releasing almost 5 million barrels of oil into the Gulf of Mexico over the ensuing 3 months. Thousands of oil spill workers participated in the spill response and clean-up efforts. The GuLF STUDY being conducted by the National Institute of Environmental Health Sciences is an epidemiological study to investigate potential ad...
During the last years, several terrestrial ecosystems have suffered from large spill oil events threatening coastal habitats and species. Some recent examples include the 2002 Prestige tanker oil spill in Galicia, Northern Spain, as well as repeated oil spill leaks evidenced in the Santa Barbara coastline in California, and the Patuxent river (Chesapeake watershed) in Maryland. Both spaceborne ...
In the present study new features are extracted from the dark spot and fuzzy based techniques were utilized for classifications of the dark spot into oil spill and look alike. Threshold is defined for detection of dark spot, which is obtained from histogram analysis, where the image histograms consist of two peaks. For scenes devoid of two peaks in the histogram, an empirical formula is develop...
Microbes consumed oil rapidly http://www.sciencedaily.com/releases/2011/08/ 110801111752.htm In the Deepwater Horizon oil spill in the Gulf of Mexico, the oil disappeared more rapidly than predicted. This article discusses some of the studies investigating the underlying causes of this rapid biodegradation. Oil spill is boon to bacteria http://classic.the-scientist.com/blog/display/57448/ This ...
Recent major oil-spills were tracked using observations with sufficient altitudes over the sea surface, to detect oil slick locations. For oil-spill responders, we propose a captive Unmanned Aerial System, UAS acting like a periscope over a ship or supply vessel. The system is composed of an umbilical deployed from ship deck, and there are few studies that have examined elasticity within cable ...
The primary objective of this research was to determine the relationship between operational variables and oil spill recovery rates, by performing a full-scale oil spill recovery test using an oleophilic drum skimmer. Prototype interchangeable oleophilic skimmer drums with aluminum, polyethylene and Neoprene surfaces were fabricated and tested at the field scale at the Ohmsett-National Oil Spil...
The main objective of this work is to design automatic detection procedures for oil spill in synthetic aperture radar (SAR) satellite data. In doing so the genetic algorithm tool was designed to investigate the occurrence of using ENVISAT and RADARSAT-2 SAR satellite data. The study shows that genetic algorithm provides accurate pattern of oil slick in SAR data. This shown by 90% for oil spill,...
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