Changes for page Amadee-20-SANDEE

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  • SANDEE_manifest.png

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6	6	|**Organisation** |School of sustainability, Interdisciplinary Center (IDC) Herzliya
7	7	|**Co-Investigators**|Itzhak Katra, Dep. of Geography and Environmental Development, Ben-Gurion Univ. of the Negev, Israel
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9		-=== Summary ===
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12		-(((
13		-[[image:SANDEE_manifest.png]]
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16		-The BGU portable wind tunnel, (c) SANDEE team
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19		-
20		-When small airborne dust particles, carried by the wind, collide and rub against other
21		-suspended particles or against the surface, they may redistribute charge between them. This
22		-leads to the phenomenon of the electrification of mineral dust clouds. The efficiency of the
23		-process and the sign of the charge a particle acquires depends on its properties, like e.g. shape
24		-or mineralogy. By analogy to these processes on Earth, it is to be expected that sand- and dust
25		-storms on Mars are electrically charged to some degree, as well. This would have important
26		-implications for lander operations, orbiter-lander communication and future human missions.
27		-
28		-The SANDEE experiment aims to address several scientific questions regarding the described
29		-phenomenon by simulating sandstorms and measuring their dynamic, mineralogical and
30		-electrical characteristics. In the experiment the behavior of soil samples collected on-site in a
31		-BGU boundary layer wind tunnel is to be investigated. In the tunnel, the soil samples will be
32		-subjected to various wind speeds comparable with typical winds in the Negev desert.
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34		-The team plans for two measurement runs, one at daytime and one at night-time. The aim of
35		-the night-time run is to include high-speed imaging of the sand movement inside the wind-
36		-tunnel, in an attempt to detect corona discharges and light emission during eolian transport.

SANDEE_manifest.png

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