Name: Shaking Intensity (MMI value)

Display Field: ShakingIntensity

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: When this layer is turned on, click on any area of the map to view the total population, occupied housing units, number of businesses, and number of employees exposed to each shaking intensity. These estimates are provided for the county clicked.The Modified Mercalli Intensity (MMI) scale is a seismic scale used for measuring the intensity of an earthquake. It measures the effects of an earthquake on the earth’s surface, humans, objects in nature, and the building environment. The scale ranges from 1 (not felt) to 12 (total destruction), often expressed as Roman numerals I through XII. Following is a detailed description of MMI shaking intensity levels: MMI 4: Vibration felt like passing of heavy trucks. Stopped cars rock. Hanging objects swing. Windows, dishes, doors rattle. glasses clink. In the upper range of IV, wooden walls and frames creak. MMI 5: Pictures move. Felt outdoors. Sleepers wakened. Liquids disturbed, some spilled. Small unstable objects displaced or upset. Doors swing. Pictures move. Pendulum clocks stop. MMI 6: Objects fall. Felt by all. People walk unsteadily. Many frightened. Windows crack. Dishes, glassware, knickknacks, and books fall off shelves. Pictures off walls. Furniture moved or overturned. Weak plaster, adobe buildings, and some poorly built masonry buildings cracked. Trees and bushes shake visibly. MMI 7: Nonstructural damage. Difficult to stand or walk. Noticed by drivers of cars. Furniture broken. Damage to poorly built masonry buildings. Weak chimneys broken at roof line. Fall of plaster, loose bricks, stones, tiles, cornices, unbraced parapets and porches. Some cracks in better masonry buildings. Waves on ponds. MMI 8: Moderate damage. Steering of cars affected. Extensive damage to unreinforced masonry buildings, including partial collapse. Fall of some masonry walls. Twisting, falling of chimneys and monuments. Wood-frame houses moved on foundations if not bolted; loose partition walls thrown out. Tree branches broken. (MMI descriptions taken from quake.abag.ca.gov/shaking/mmi/plaintext/.)

Service Item Id: 54cb7315236844b5b19d99de8263ca08

Copyright Text:

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 600546.3464543074
YMin: 81834.60810406506
XMax: 2273331.644577801
YMax: 1348520.7456584722
Spatial Reference: 2927  (2927)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: ShakingIntensity
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: 4
  Label: 4 - Light
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [114, 223, 255, 255]
  Outline:
  N/A
• Value: 5
  Label: 5 - Moderate
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [143, 188, 143, 255]
  Outline:
  N/A
• Value: 6
  Label: 6 - Strong
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [245, 245, 153, 255]
  Outline:
  N/A
• Value: 7
  Label: 7 - Very Strong
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [255, 165, 0, 255]
  Outline:
  N/A
• Value: 8
  Label: 8 - Severe
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [255, 69, 0, 255]
  Outline:
  N/A
• Value: 9
  Label: 8 - Severe
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [255, 69, 0, 255]
  Outline:
  N/A
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: true
Supports Sql Format: false
Supports Query Analytic: false
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: objectid_1 )
• shape ( type: esriFieldTypeGeometry, alias: shape )
• CountyName ( type: esriFieldTypeString, alias: County Name, length: 20 )
• ShakingIntensity ( type: esriFieldTypeSmallInteger, alias: Shaking Intensity (MMI value) )
• Population ( type: esriFieldTypeInteger, alias: Population effected by shaking )
• Businesses ( type: esriFieldTypeInteger, alias: Businesses effected by shaking )
• Employees ( type: esriFieldTypeInteger, alias: Employees effected by shaking )
• Occupied_Housing_Units ( type: esriFieldTypeInteger, alias: Occupied housing units effected by shaking )
• shape_Length ( type: esriFieldTypeDouble, alias: shape_Length )
• shape_Area ( type: esriFieldTypeDouble, alias: shape_Area )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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