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Products

ARIA Products 


 









Product

Description

Data Level

Needs and Applications

User Latency Requireme nts

ARIA Latency Capability

User Resolution Requirements

ARIA Resolution

Capability

Continuous GPS and InSAR analysis

Automatically updated set of GPS solutions and SAR interferograms

2

Forms the basis for all higher level products. Input for seismic hazard maps. Provides high temporal resolution for monitoring, transient detection.

GPS: 1 day InSAR: 1 day

GPS: 10 min InSAR: 2 hrs

10 cm

5-­‐8 cm

Coseismic Surface Displacement

Automatically generated estimates of coseismic surface displacement from GPS & InSAR

3

Basis for earthquake source models, change in vertical datum.

GPS: 1 hr InSAR: 1 day

GPS: 15 min InSAR: 3 hrs

10 cm

5-­‐8 cm

Ground Displacement Monitoring Maps

Automatically generated maps of horizontal and vertical ground displacement from GPS & InSAR.

3

Critical for monitoring processes such as volcanic inflation, reservoir subsidence, landslide creep.

GPS: 2-­‐3 hrs InSAR: 1 day

GPS: 30 min InSAR: 4 hrs

10 cm

3-­‐5 cm

Earthquake Source Model

Static model of fault slip from GPS, InSAR and seismic data that is generated automatically and updated as more data, improved coseismic offsets become available.

4

Provide estimates of fault size and magnitude that are more realistic than models from seismic data alone. Basis for L5 products such as Ground Shaking Maps.

1 day

30 min (GPS only) – 4 hrs (InSAR & GPS)

EQ geometry within 5 km. Magnitude within 0.2 Mw

EQ geometry within 1-­‐3 km. Magnitude within 0.2 Mw

Damage Proxy Map

Georeferenced map of estimated damage due to trigger earthquake, generated from differencing correlation maps before and after earthquake.

4

Will provide estimates of where significant damage has occurred, particularly useful in regions where other imagery or communication from ground is not available. Basis for Critical Infrastructure Assessment Maps.

1 day (response)

2 wks (recovery)

4 hours

Identify damage over multi-­‐block size area

Identify damage over building block size area

Ground Shaking Maps

Estimate of amplitude of ground shaking, created in partnership with USGS using Earthquake Source Model to more accurately constrain fault dimensions and fault slip.

5

Will aid loss estimations immediately following earthquake.

1 day

GPS: 1 hr

InSAR: 5 hrs

accurately identify regions of very strong shaking (peak acceleration > 18% g)

accurately identify regions of very strong shaking (peak acceleration > 18% g)

Change in Vertical Datum Maps

Estimate of uplift, subsidence and tilt caused by earthquake integrated with maps of coastal infrastructure, water resources, and other facilities sensitive to changes in vertical motion and slope.

5

Will allow governments and decision-­‐makers to assess changes in water level and drainage caused by earthquake.

1 day (response)

2 wks (recovery)

GPS: 1 hr

InSAR: 4 hrs

10 cm

5-­‐8 cm

Critical Infrastructure Assessment Map

Estimate of damage to hospitals, schools, roads, ports, and other critical infrastructure created by partnering with agencies with relevant databases and integrating Damage Proxy Map.

5

Will provide information on damaged infrastructure to emergency response agencies. Will provide input for assessments of resources required for recovery effort.

1 day (response)

2 wks (recovery)

InSAR: 5 hrs

Identify damage over multi-­‐block size area

Identify damage over building block size area