critical deep sea research areas derived from failure modeling of the great bp oil spill
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Critical Deep Sea Research Areas Derived from Failure Modeling of the Great BP Oil Spill. Critical Deep Sea Research Areas Derived from Failure Modeling of the Great BP Oil Spill. Ira Leifer. University of California, Santa Barbara. Hydrate Consortium Meeting, Oct. 27 2010. - PowerPoint PPT PresentationTRANSCRIPT
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Critical Deep Sea Research Areas Derived from Failure Modeling of the Great BP Oil Spill
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Critical Deep Sea Research Areas Derived from Failure Modeling of the Great BP Oil Spill
Ira Leifer
University of California, Santa BarbaraHydrate Consortium Meeting, Oct. 27 2010
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And then life changed . .
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What was happening at the seabed? Egads!!
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Lets pretend it’s a seep!!
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Ira, are you serious?
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Yes!
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Note: joke about the spherical cow!
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A non-uniform flow
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Model Schematic
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If you care… see Rehder et al. 2009
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Rehder et al. 2009
Does the model work (above HSF)?
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Does the model work (inside HSF)?
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Short Notice: Hydrate Solubility
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COP Seep Field Blowout - 0.4 m3/s
Vup ~ 2 - 3 m/s
Pre-ejection t = 0.6 s t = 1.2 s
Leifer et al. 2006 Leifer et al. 2010
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Hydrate-free Deep Bubbles
Vup = 30 cm/s
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Depth effects enhance bubble longevity
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Bubble Outgassing Trend
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Data…
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Camilli et al. 2010Methane (and oil) in a 1100 m layer
C2+ in surface layer
C5+ in atmosphere in a plume structure in reservoir ratios (NOAA, P3, Ryerson)
C3-C5 (isomers, etc) proportional to solubility (NOAA, P3, Ryerson)
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Remote Sensing Detour
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Remote Sensing Detour(2)(Physics-based quantitative oil thickness)
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Remote Sensing Detour(3)
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Remote Sensing Detour(4)
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Fig. 14b. Mapping results for oil-to-water ratio for a portion of AVIRIS run 11. The width of the scene is ~5.5 km; north is ~4 o'clock. Black areas on the right are where no thick oil was detected. The center of this image is about 12 km WSW of the incident site.
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Remote Sensing Detour(5)
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Fig. 14b. Mapping results for oil-to-water ratio for a portion of AVIRIS run 11. The width of the scene is ~5.5 km; north is ~4 o'clock. Black areas on the right are where no thick oil was detected. The center of this image is about 12 km WSW of the incident site.
Key pt: Fresh Oil reaches surface in coherent patches
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Summary…C1 (and oil) in a 1100 m layer
C2+ in surface layer peaked at about the thermocline
C5+ in atmosphere in a plume structure in reservoir ratios (NOAA, P3, Ryerson)
C3-C5 (isomers, etc) proportional to solubility (NOAA, P3, Ryerson)
Oil surfaces in a plume
Vertical distribution not a decreasing exponential
No evidence of bubbles reaching the sea surface
HyFlux - Methane reaches the sea surface, bubbles to 150 m
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Summary…C1 (and oil) in a 1100 m layer
C2+ in surface layer peaked at about the thermocline
C5+ in atmosphere in a plume structure in reservoir ratios (NOAA, P3, Ryerson)
C3-C5 (isomers, etc) proportional to solubility (NOAA, P3, Ryerson)
Oil surfaces in a plume
Vertical distribution not a decreasing exponential
Data Inconsistent with Bubbles
No evidence of bubbles reaching the sea surface
HyFlux - Methane reaches the sea surface, bubbles to 150 m
Wait... talk not over….
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Bubble Plume Schematic
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Field Plume Behavior (COP)
intrusion
Slows at thermocline
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Field Plume Behavior (GOM)
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Solomon et al 2009
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Deep Spill 1 (Norway)
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No bubble detrainment, large (2 mm) bubbles
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A hypothesis model
Bu
bble
Driven
Plum
e
Oil Outgassing
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Oil
Driven
Plum
e
Oil
Ou
tGa
ses
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Areas for research>what happened at 1100 m?>What is the behavior of an oil driven plume?>How does oil outgas in the mid-water column?