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GIS for Operations
  • Introduction
  • How do MAGIC Support Operations?
  • GIS Technologies at BAS
    • Web Mapping
      • Layer Structure
      • Live Data
      • Tools
    • QGIS
  • QGIS for Operations
    • Vectors and Rasters
    • Working with Height data
    • Imagery
    • Making 3D Views
    • Linking documents to Spatial data
    • Working with GPS Devices
      • Working with GPS data in QGIS
      • Working with GPS data in Garmin Basecamp
      • Adding Basemaps to GPS Units
      • GPXTools
    • Useful Plug-ins
      • LatLon Tools
      • Profile Tool
  • Data bundles
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  • Base Layers
  • Reference Layers
  • Topographic Data
  • Operations Data

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  1. GIS Technologies at BAS
  2. Web Mapping

Layer Structure

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Last updated 9 months ago

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GIS systems use a layer structure to organise the data. Likewise, Web mapping also arranges our base data, and then layers other contextual data over the top.

Base Layers

Base layers are normally made up of raster data, such as satellite imagery, digital elevation models (DEMS), hillshades or a combination of both raster and vector data.

You can toggle between base layers as you use the map. Examples of base layers available in Operations GIS are listed below:

Layer

Description

Hillshade and Bathymetry

Antarctic hillshade and bathymetry south of 60°S

LIMA mosaic

REMA DEM

Reference Layers

The rest of the layers are called Reference Layers, and contain a mixture of Topographic and Operations data.

Topographic Data

Operations Data

This data is split into Static Data, which is useful reference data that is relatively fixed, and Season Data, which is updated annually.

Static Data

Examples of static operations data include station-specific data such as Rothera building layout, the Dash-7 PNR radii from airfields, or multi-year tractor traverse routes.

Season Data

Season data is updated annually, and usually includes:

  • Waypoints, Depots and Network routes from the Air Operations Planning Maps

  • Science Sites sourced from the Field Operations Manager

Landsat Image Mosaic of Antarctica (LIMA). True colour (bands 3, 2, 1), pan-sharpened. Imagery dated 1999-2003. ()

Reference Elevation Model of Antarctica, a Digital Surface Model (DSM) at 8-meter spatial resolution from the Polar Geospatial Center ()

Topographic data layers are sourced from the .

The ADD is updated twice a year and is available for download . At Rothera, the data is updated at the start of each season.

Antarctic Digital Database
here
learn more here
PGC
Operations GIS with base layers highlighted. As you can see, Radarsat RAMP HH is toggled here.
Operations GIS, highlighting the topographic data layer group
Operations GIS, highlighting the static data. Notice we have toggled the "Primary Routes and Waypoints" data layer here.
Operations GIS, highlighting the season-specific data group.