descriptionsopac.ucsd.edu/docs/jpl_aria_product_description.docx · web viewsince the maps are...
TRANSCRIPT
Damage Proxy MapDescriptionEstimates from satellite radar of where the earthquake has caused significant damage. Red color indicates regions that have been disrupted, where darker red indicates greater change. The radar-based Damage Proxy Map detects damage caused by building collapse, tsunami inundation, landslides, and liquefaction.
Use for decision makingWhen combined with building maps, the damage proxy map can be used to identify structures that have been damaged by the earthquake. The maps are also useful for identifying scale of damage over large regions, as well as damage in remote regions where communication from the ground is not available and/or access is difficult. .
Data AvailabilityMaps are available between within a day to several days after the earthquake, depending on the availability of earliest post earthquake radar observations.
Additional InformationSince the maps are based on radar observations and not optical images, the post earthquake images are not blocked by clouds and can be acquired day or night, providing information under conditions. The map compares disruption between two images that span the earthquake and two images both taken before the earthquake. Change due to other significant events (floods, storms, aftershocks) may be captured in the “Mainshock Damage Proxy Map”, depending on the timing of the radar observations.
Contact InformationThe Damage Proxy Map is provided by the ARIA project. Contact Sang-Ho Yun ([email protected], 818-354-4125) or Susan Owen ([email protected], 818-393-2524) for more information.
Horizontal and Vertical Movement MapsDescriptionPermanent horizontal and vertical movement caused by the earthquake. The movement shown is relative to the land’s geographical coordinates before the earthquake. The maps are based on measurements interpolated from available Plate Boundary Observatory Continuous GPS stations near the earthquake and are not based on models.
Use for decision makingThese maps can be useful for identifying areas that have been disrupted by large ground movements, for example coastlines that have been uplifted by several feet. These maps can also be used to identify the geographical region impacted by the earthquake.
Data AvailabilityInitial maps are available within minutes after the earthquake. Updates from additional data will be provided in a few hours, and continually updated as more data arrives.
Additional InformationThe movement shown is relative to the land’s geographical coordinates before the earthquake. The maps are based on interpolated measurements from available Plate Boundary Observatory Continuous GPS stations near the earthquake and are not based on models.
Contact InformationThe Horizontal and Vertical Movement Maps are provided by the ARIA project. Contact Angelyn Moore ([email protected], 818-354-5434) or Susan Owen ([email protected], 818-393-2524) for more information.
Damage Data FeedDescriptionA stream of geographical coordinates, with descriptive text tags, that have been identified using both the Damage Proxy Map and additional data layers, for example critical infrastructure maps, landslide probability maps or liquefaction probability maps.
Use for decision makingThe data feed will provide specific information on locations that need attention from disaster response teams.
Data AvailabilityThe Damage Data Feed will be available after the Damage Proxy Map is released. JPL/ARIA Damage Proxy Maps are available between within a day to several days after the earthquake, depending on the availability of earliest post earthquake radar observations.
Contact InformationThe Damage Proxy Map is provided by the ARIA project. Contact Sang-Ho Yun ([email protected], 818-354-4125) or Susan Owen ([email protected], 818-393-2524) for more information.