Disaster Resilience: Card #1 - Severe Shaking and Ground Deformation

[PoeStewart]

Project: Disaster Resilience Card Title: Violent Shaking and Ground Deformation

Description / Wireframe

City-level map showing shaking intensity, and total deformation scenarios for a wet and a dry season event.

Three different maps of impacts to Portland from the Cascadia Subduction Zone (9.0) earthquake: Shaking intensity Landslide Liquefaction

Ground Shaking Intensity (Modified Mercalli Index) estimates by neighborhood. Shaking in Portland will be Very Strong to Severe.

Very strong: Damage negligible in buildings of good design and construction; slight to moderate in well-built ordinary structures; considerable damage in poorly built or badly designed structures; some chimneys broken.

Severe: Damage slight in specially designed structures; considerable damage in ordinary substantial buildings with partial collapse. Damage great in poorly built structures. Fall of chimneys, factory stacks, columns, monuments, walls. Heavy furniture overturned.

LandSlide and Liquefaction estimates for a Cascadia Subduction Zone Magnitude 9.0 Earthquake - Wet (Saturated) Soil Scenario

Landslide estimates - Dry Soil Scenario

Data Visualization / Design Concerns

Context

Contextual Description: Based on developed models, scientists can estimate what will happen to the ground in a 9.0 Cascadia Subduction Zone earthquake. The below maps apply these models to Portland based on a calculated average for each neighborhood, based on the following: Shaking intensity, how much the surface of the earth moves during an earthquake, is represented using a Modified Mercalli (MM) Intensity scale. [link for Modified Mercalli (MM) Intensity: https://earthquake.usgs.gov/learn/topics/mercalli.php]

Total Deformation (average of liquefaction/landslide combined) during a wet season is impacted by both landslide potential and liquefaction potential. Landslide potential is based on topography and soil conditions. Liquefaction potential estimates the potential for saturated (wet), unconsolidated/loose ground materials to liquefy or give way during an earthquake.

Total Deformation (average of landslide - there’s no liquefaction) during a dry season season is impacted by landslide potential based on topography. The lack of moisture in the ground will lessen the impact of the event.

Data Details (APIs)

These might be static graphics or they might be in the Sandbox.

Shaking Intensity: http://service.civicpdx.org/disaster-resilience/sandbox/foundations/shaking/ Landslide: http://service.civicpdx.org/disaster-resilience/sandbox/foundations/landslide/ Liquefaction: http://service.civicpdx.org/disaster-resilience/sandbox/foundations/liquefaction/

About this data

How did we calculate this

Modified Mercalli Intensity (MMI) values are defined by binning Peak Ground Velocity (PGV) values obtained from the DOGAMI model output (raster) for the Cascadia Subduction zone earthquake simulation. The following bounds were used to convert PGV (in cm/s) to MMI:

'Not felt (I)' = 0 - 0.1 'Weak (II-III)' = 0.1 - 1.1 'Light (IV)' = 1.1 - 3.4 'Moderate (V)' = 3.4 - 8.1 'Strong (VI)' = 8.1 - 16 'Very Strong (VII)' = 16 - 31 'Severe (VIII)' = 31 - 60 'Violent (IX)' = 60 - 116 'Extreme (X)' = >116

Similarly, Permanent Ground Deformation Intensity (PGDI) values are defined by binning Permanent Ground Deformation (PGD) values obtained from the DOGAMI model output (rasters) for the Cascadia Subduction zone earthquake simulation. The following bounds were used to convert PGD (in cm) to PGDI:

'None' = 0 ‘Low’ = 0 - 10 ‘Moderate’ = 10 - 30 ‘High = 30 - 100 ‘Very High’ = >100

See the source

Link to API / data documentation on GitHub DOGAMI model output data source: https://www.oregongeology.org/pubs/ofr/p-O-18-02.htm RDPO report containing PGD binning values: http://www.oregongeology.org/pubs/ofr/O-18-02/O-18-02_report.pdf

[PoeStewart]

@AraOshin is this something that we can make in the sandbox or should we use static images? Thanks!

[AraOshin]

@PoeStewart Hi! Yes this will be 3 separate sandbox foundations and then you will be able to layer the slide on top with the icons for points of interest (schools, fire stations etc). I am just waiting on the data (the table Fred pulled up) to be loaded into the database.

[PoeStewart]

Okay, yeah, it seems that there is a technical bottle neck there that I don't totally understand but they are working on it. Thanks!

On Thu, Jun 7, 2018 at 11:49 AM, AraOshin notifications@github.com wrote:

@PoeStewart https://github.com/PoeStewart Hi! Yes this will be 3 separate sandbox foundations and then you will be able to layer the slide on top with the icons for points of interest (schools, fire stations etc). I am just waiting on the data (the table Fred pulled up) to be loaded into the database.

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/hackoregon/civic/issues/217#issuecomment-395526065, or mute the thread https://github.com/notifications/unsubscribe-auth/AQRKEK7nu1cJ5IUqcEt4J4Qob8hLieywks5t6XXBgaJpZM4Ud1-W .

[eecooper]

new text for context

Contextual Description: Based on developed models, scientists can estimate what will happen to the ground in a 9.0 Cascadia Subduction Zone earthquake. The below maps apply these models to Portland based on a calculated average for each neighborhood, based on the following: Shaking intensity, how much the surface of the earth moves during an earthquake, is represented using a Modified Mercalli (MM) Intensity scale. [link for Modified Mercalli (MM) Intensity: https://earthquake.usgs.gov/learn/topics/mercalli.php] Total Deformation (average of liquefaction/landslide combined) during a wet season is impacted by both landslide potential and liquefaction potential. Landslide potential is based on topography and soil conditions. Liquefaction potential estimates the potential for saturated (wet), unconsolidated/loose ground materials to liquefy or give way during an earthquake. Total Deformation (average of landslide - there’s no liquefaction) during a dry season season is impacted by landslide potential based on topography. The lack of moisture in the ground will lessen the impact of the event.

[Kodiraet]

Did @AraOshin get what she needs to make this a sandbox feature?

[PoeStewart]

I am not sure, we have a new version of our API with a sandbox portion now but I don't think the POI is what is needed for this card. http://service.civicpdx.org/disaster-resilience/

[AraOshin]

I think I have everything! Was waiting on the database update but that was handled earlier this week. Should have endpoints up today.

On Wed, Jun 13, 2018 at 10:06 AM, Kodi Rae notifications@github.com wrote:

Did @AraOshin https://github.com/AraOshin get what she needs to make this a sandbox feature?

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/hackoregon/civic/issues/217#issuecomment-397013513, or mute the thread https://github.com/notifications/unsubscribe-auth/AdJKVlogMXwQGf8nksKtJJbRMjK1MDJnks5t8UaLgaJpZM4Ud1-W .

[AraOshin]

I think I have everything! Was waiting on the database update but that was handled earlier this week. Should have endpoints up today. @PoeStewart will connect with you if I have questions

[eecooper]

API for landslide map: /disaster-resilience/sandbox/foundations/landslide/ API for liquifaction map: /disaster-resilience/sandbox/foundations/liquefaction/ API for shaking intensity map: /disaster-resilience/sandbox/foundations/shaking/

@AraOshin we're not sure if you still needed these or not

[AraOshin]

@eecooper I'm confused. Those are the endpoints I made :). Is something else going on/needed?

[eecooper]

@AraOshin I think we're getting confused about what still needs to be in the GitHub request to move over to "ready for development". I think we're sorted now, sorry!

[AraOshin]

@eecooper no worries at all! just wanted to make sure all was well 👍

[jaronheard]

This is a Civic Sandbox layer now!