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    <Identification_Area>
        <logical_identifier>urn:nasa:pds:context:instrument:sders-china.shapotou_wt</logical_identifier>
        <version_id>1.0</version_id>
        <title>Shapotou Wind Tunnel, Shapotou Desert Experimental Research Station, Institute od Desert Research, Chinese Academy</title>
        <information_model_version>1.11.0.0</information_model_version>
        <product_class>Product_Context</product_class>
        <Modification_History>
            <Modification_Detail>
                <modification_date>2019-02-15</modification_date>
                <version_id>1.0</version_id>
                <description>
                 Initial creation of the context product.
                </description>
            </Modification_Detail>
        </Modification_History>
    </Identification_Area>
    <Reference_List>
        <Internal_Reference>
            <lid_reference>urn:nasa:pds:context:facility:laboratory.sders-china</lid_reference>
            <reference_type>instrument_to_facility</reference_type>
        </Internal_Reference>
        <External_Reference>
            <doi>10.1016/S0169-555X(02)00170-8</doi>
            <reference_text>Dong, Z., X. Lu, H. Wang, A. Zhao, and X. Wang, (2003), The flux profile of a blowing
                sand cloud: a wind tunnel investigation, Geomorphology, 49(2-3): 219-230.</reference_text>
        </External_Reference>
    </Reference_List>
    <Instrument>
        <name>Shapotou Wind Tunnel, Shapotou Desert Experimental Research Station, Institute od Desert Research, Chinese Academy</name>
        <type>Atmospheric Sciences</type>
        <description>
            A large and complex wind tunnel used at the Shapotou Desert Experimental Research Station, China. The overall length of the tunnel 
            is 37 m. The working section dimentions are 21 m length, 1.2 m width, 1.2 m height. The tunnel is subdived into several sections
            including the power section (2.60 m length), expansion section (6.40 m length), stabilization section (honeycomb and drag screens,
            1.50 m length), compression section (2.50 m length), work section (21.0 m length), and the diffusion section (3.00 m length).
            The cross-sectional area varies by section and reaches a maximum in the expansion section at 2.4 m by 1.2 m. Wind speed can be 
            continuously varied from 2 - 30 m s^-1.
       </description>
    </Instrument>
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