Layer: pga_contours (ID:0)

View In: Map Viewer

Name: pga_contours

Display Field:

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description:

This layer shows recent earthquakes from GNS Shaking Layers and uses matching symbology and classes as the GeoNet maps for PGA. It can be used in addition to the GNS Shaking Layers epicentre layer.

This layer is updated when

a Shaking Layers event is created
a new latest run is available for an event

Use this PGA layer if you want to show across an area how fast a point on the ground is shaking as a result of an earthquake.

The specific layers provided in this service are:

Peak Ground Acceleration: Peak Ground acceleration data per location above 0.01 (in units of g)

Shaking Layers are computed using the most appropriate (source) parameters for the calculation, and these may differ from those visible on the GeoNet website or other products.

For field terms and technical details, see Shaking Layers Guidelines

This map is provided for informational purposes and is not monitored 24/7 for accuracy and currency. Always refer to GNS Shaking Layers source for official guidance.

Citation:
GNS Science, Shaking Layers Dataset https://doi.org/10.21420/J856-2J84

If you have any questions or feedback about GNS Shaking Layers please email info@geonet.org.nz

Copyright Text:

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeNone

Object ID Field: FID

Unique ID Field:

Global ID Field:

Type ID Field:

Fields:

FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeInteger, length: 0, nullable: false, editable: false)
Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeFloat, nullable: true, editable: false)
Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeFloat, nullable: true, editable: false)
PGA (type: esriFieldTypeDouble, alias: PGA (g), SQL Type: sqlTypeOther, nullable: true, editable: true)
MAGNITUDE (type: esriFieldTypeDouble, alias: Magnitude, SQL Type: sqlTypeOther, nullable: true, editable: true)
DEPTH (type: esriFieldTypeDouble, alias: Depth (km), SQL Type: sqlTypeOther, nullable: true, editable: true)
TIME (type: esriFieldTypeDate, alias: Time, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: true)
PUBLIC_ID (type: esriFieldTypeString, alias: Public ID, SQL Type: sqlTypeOther, length: 100, nullable: true, editable: true)
LINK (type: esriFieldTypeString, alias: GeoNet Link, SQL Type: sqlTypeOther, length: 256, nullable: true, editable: true)

Templates:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 7/28/2025 3:44:20 PM

Schema Last Edit Date: 6/4/2025 1:02:30 AM

Data Last Edit Date: 7/28/2025 3:44:20 PM

Supported Operations: Query Query Pivot Query Top Features Query Analytic Query Bins Generate Renderer Validate SQL Get Estimates ConvertFormat