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r~ <br />L <br /> <br /> <br />Table 2.3- 2 <br />Site <br />Cache Valley, <br />Utah <br />Eagle River, <br />Colo. <br />Garfield, <br />Utah <br />~' Huntington <br />Canyon, Utah <br />Huntington <br />Canyon, Utah <br />Page, <br />Arizona <br />Summary of Some Diffusion Experiments in Complex Terrain <br />Principal Stability <br />Investigators Class Results and Comments <br />Wooldridge & Ellis <br />Wooldridge & Orgill <br />(1975) <br />Start, Ricks, Dickson <br />(1975) <br />Start, Dickson and <br />Wendell (1975) <br />Hovind, et al (1975) <br />MacCready, et al <br />(1974) <br />Stable <br />Stable <br />B,C <br />D <br />F <br />F <br />Stable <br />Diffusivities measured by double theodolite balloons are <br />5 to 10 times larger that measured over flat terrain. <br />Diffusivities measured by double theodolite balloons are <br />5 to 10 times larger than measured over flat terrain. <br />Elevated centerlines a factor of from 2 to 4 times more <br />dilution than expected using Gaussian predictions over <br />flat terrain. <br />Up-valley flow concentrations diluted by a factor of 1.5 <br />to 4 over Gaussian estimates. <br />Down valley stable flow concentration diluted by a factor <br />of 15.2 from Gaussian estimates. <br />Dilution factor of 10 above Gaussian predictions. <br />Gaussian method would yield concentrations 10 to 15 times <br />larger than observed turbulence measurements would produce. <br />South Vandenburg Hinds (1970} Stable Terrain effects on dispersion during unstable conditions <br />Air Force Base, CA Unstable were minimal. During stable conditions terrain effects <br />caused a dilution factor of 1.5 to 3 over standard Gaussian <br />Cuiiceiiti'a1,1U11 CSLllllate5. <br /> <br />`J <br />*Gaussian Model predictions referred to in this table were computed with flat terrain assumptions. <br />