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Placement of Thermocouples into the Soil Profile at the Hollister EPSCoR Sagebrush Flux Site

Placement of Thermocouples into the Soil Profile at the Hollister EPSCoR Sagebrush Flux Site. Sept. 28, 2011 R.Allen and W.Zhao, Univ. Idaho. #1 - 0.02 m. #2 - 0.04 m. low density soil b.d.~ 1.2?. substantial grass roots to 0.10 m. #3 - 0.08 m. #4 - 0.12 m. #5 - 0.18 m.

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Placement of Thermocouples into the Soil Profile at the Hollister EPSCoR Sagebrush Flux Site

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  1. Placement of Thermocouples into the Soil Profile at the Hollister EPSCoR Sagebrush Flux Site Sept. 28, 2011 R.Allen and W.Zhao, Univ. Idaho

  2. #1 - 0.02 m #2 - 0.04 m low density soil b.d.~ 1.2? substantial grass roots to 0.10 m #3 - 0.08 m #4 - 0.12 m #5 - 0.18 m occaisional rocks ~ 60 mm diam. throughout profile mod. dense soil b.d.~ 1.35? #6 - 0.24 m #7 - 0.32 m very dense soil b.d.~ 1.5? #8 - 0.40 m Rock thermocouple tip inserted horizontally into undisturbed profile Placement of Thermocouples into the Soil Profile at the Hollister EPSCoR Sagebrush Flux Site Placement is ~ 0.2 m north and east of sensors at EC#1 site, Soil subsite #2. Surface is bare, crusted, open, about 0.3 m to the south and to the west of sage brush, with few grasses, but with substantial grass roots in top 0.10 or 0.15 m of soil. Constantin-Chromel TC’s, Type E, ~ 1 mm diameter, Soldered at ends and potted in plastic suringe package-tips using silicone sealer. Excavated hole, refilled to near original density using six layers in original order Dr. Richard G. Allen and Dr. Wengang Zhao, Univ. Idaho, 9/28/2011 Graphic by Allen

  3. Location of soil temperature profile prior to installation. Hollister Sagebrush site – EC Location 1 Soil sensor subsite 2 Viewing from north to south Location of soil temperature profile prior to installation. Hollister Sagebrush site – EC Location 1 Soil sensor subsite 2 Viewing from east to west

  4. Installation of soil temperature profile -- Hollister Sagebrush site – EC Location 1, soil sensor subsite 2 ---top left---beginning hole ---top right---preserving top crust ---right---hole showing grass roots along sides

  5. Installation of soil temperature profile -- Hollister Sagebrush site – EC Location 1, soil sensor subsite 2 ---top left---hole after excavation ---top right---thermocouple inside suringe tip ---left---soil preservation during install.

  6. Location of soil temperature profile after installation. Hollister Sagebrush site – EC Location 1 Soil sensor subsite 2 ---left---Viewing from west to east showing brown TC wires (1-8) entering ground and relatively undisturbed aftermath ---bottom---View from tripod

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