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  <Identification_Area>
    <logical_identifier>urn:nasa:pds:context:instrument:guelph-wel.guelph_wt</logical_identifier>
    <version_id>1.4</version_id>
    <title>Guelph Wind Tunnel at Wind Erosion Laboratory, Department of Geography, University of Guelph, Ontario, Canada</title>
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        <version_id>1.4</version_id>
        <description>Removed duplicate Internal_Reference entries from Reference_List.</description>
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      <Modification_Detail>
        <modification_date>2025-12-24</modification_date>
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        <version_id>1.2</version_id>
        <description>Updated schema version. Adding missing "facility" references. Updated CTLI instrument types.</description>
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        <description>Updated schema version. Adding missing "facility" references.</description>
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      <Modification_Detail>
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                 Initial creation of the context product.
                </description>
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  </Identification_Area>
  <Reference_List>
    <Internal_Reference>
      <lid_reference>urn:nasa:pds:context:facility:laboratory.guelph-wel</lid_reference>
      <reference_type>instrument_to_facility</reference_type>
    </Internal_Reference>
    <External_Reference>
      <doi>10.1111/j.1365-3091.1981.tb01698.x</doi>
      <reference_text>Nickling, W.G., and M. Ecclestone, (1981), The effects of soluble salts on the threshold shear velocity
                of fine sand, Sedimentology, 28(4):505-510.</reference_text>
    </External_Reference>
  </Reference_List>
  <Instrument>
    <name>Guelph Wind Tunnel at Wind Erosion Laboratory, Department of Geography, University of Guelph, Ontario, Canada</name>
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        <ctli:type>Wind Tunnel</ctli:type>
      </ctli:Type_List>
    </Type_List_Area>
    <description>The Guelph Wind Tunnel is a research facility located at the Wind Erosion Laboratory within the Department of Geography at the University of Guelph, Ontario, Canada. Its purpose is for studying wind erosion, sediment transport, and atmospheric boundary layer processes.</description>
  </Instrument>
</Product_Context>
