Using Natural Disaster services in ArcMap

Owned by Alistair Quinn (Unlicensed)
Last updated: 05, Aug, 2021 by Karin Stronkhorst
2 min read

Active Natural Disaster image service

During a natural disaster the State Disaster Control Centre (SDCC) in Kedron is stood up, and a Restricted  temporary 3-band Optical Active Natural Disaster image service is continuously populated with the active projects over affected areas.

A Standard Deviation 2.5 stretch and Dynamic Range Adjustment (DRA) are contained within the service, but personal preference manual adjustment can be applied in the Image Analysis window in ArcMap.

Alongside this service is the Active Natural Disaster Footprints map service, which displays the labelled Before, First, Latest and All project footprints from the Active Natural Disaster image service.  Please note that it does not display any imagery.  To display the imagery in a map, it can be used in conjunction with the Active Natural Disaster image service which then needs to be filtered on the Before, First, Latest and All (Null) projects from the IS_LATEST field.

If you cannot see these Restricted Active services and need access, please contact the Spatial Help Centre.

Natural Disaster Analytic QGov & All Users image services

After, and sometimes during the natural disaster, if the service is overloaded and lowering its performance, active Analytic projects are added to the Restricted Natural Disaster Analytic time series service.  This service contains all the projects from an event and is a 4-band analytic service where stretch and DRA need to be applied in the client software.  A False Colour Function is configured in the service by Default but this can be changed to a True Colour function template in the imagery layer Properties Processing Templates.  The services only have LERC compression.

Natural Disaster Optical QGov & All Users image services

For the purpose of displaying the full extent of floodlines or fire scars resulting from natural disasters the previous scenes from the Active Natural Disaster image service are mosaicked and processed into 3-band RGB images (False or True colour) and are added to the Natural Disaster Optical time series service.  No stretch, DRA, Function or Transmission Compression need to be applied, but personal preference manual adjustment can be applied in the Image Analysis window in ArcMap. If the Active Natural Disaster image service contains 3-band projects, during the natural disaster if the service is overloaded up and lowering its performance, active Optical projects are added to the Restricted Natural Disaster Optical time series services.

Combining the Natural Disaster services (through applying transparency) with the Elevation services underneath using a Hillshade function Processing Template is very effective.