plume structure

plume structure

[′plüm ‚strək·chər]
(geology)
On the surface of a master joint, a ridgelike tracing in a plumelike pattern, usually oriented parallel to the upper and lower surfaces of the constituent rock unit. Also known as plumose structure.
References in periodicals archive ?
Indeed, when viewed with a 20-inch scope at 175x, some of the diffuse plume structure visible is suggestive of the appendages of some description of cosmic crustacean or starfish.
Related to the overall lower mixture density, it would appear that the RANS simulation produces a more diffuse (less dense) plume structure than the LES simulation despite the fact that the input cone-angle is much smaller (9[degrees] compared to 25[degrees]).
Ultimately, hole inclination, needle lift and L/D (among other parameters) will have a greater influence on the plume structure.
Atema at the Marine Biological Laboratory in Woods Hole, the behavior of a robot told us something unsuspected about the plume structure (Grasso et al., 1996b).
The main emphasis was on the mixing process as it affected the plume structure.
As the simplest observation of plume structure in the [Z.sub.H] data above, the turrets of reflectivity in the Dereel event (lines A-D in Fig.
The most critical change in thinking has been an abandonment of diffusion models of odor plume structure as a way to examine stimulus concentration.
The design of the system proved adequate to move quickly and easily from different locations around the fires in order to monitor the plume structure and fire behavior from the needed angles and lines of sight.
The most detailed studies that have attempted to measure fluid dynamic conditions, odor plume structure, and resultant orientation behavior have involved moths, crabs, and lobsters.
Although salt and ethanol diffuse differently than food odors at the molecular scale, we observed no visual differences in plume structure between odor plumes and ethanol-salt plumes.
A stable plume structure permits direct binary comparisons of chemical concentration inside and outside the plume, to guide movement lateral to flow.
All deployments were in California with the exception of a single exploratory airborne campaign that used the University of Wyoming King Air (UWKA) to observe plume structures during a large wildfire in Idaho (ID).