1 / 11

Reconstructing Spatio-Temporal Patterns of Social Vulnerability Los Angeles (1940-2000)

Dive into the reconstruction of social vulnerability patterns in Los Angeles from 1940 to 2000, examining what factors make people and places vulnerable to extreme events and developing new models for measurement.

gage-gaines
Download Presentation

Reconstructing Spatio-Temporal Patterns of Social Vulnerability Los Angeles (1940-2000)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Reconstructing Spatio-Temporal Patterns of Social Vulnerability Los Angeles (1940-2000) Zaria Tatalovich John P. Wilson

  2. Context • Part of larger Risk Transference Project in domain of vulnerability science • Objective to understand what makes people and places vulnerable to extreme events • Develop new methods and models for measurement of vulnerability • How well can we model vulnerability across space and time? • What are advantages of proposed model to understanding what makes people and places vulnerable? Zaria Tatalovich February 2006

  3. Social Vulnerability Index • Social vulnerability - extent to which society is exposed to shock brought about by economic, environmental, government policy changes or combination of factors • Calculate Social Vulnerability Index (SVI) based on set of social variables • Advantage of SVI - can be used to represent complex phenomena in a format which permits easy comparison over time Zaria Tatalovich February 2006

  4. Calculating SVI Population and structure • Calculate Social Vulnerability Index (SVI) for each decade 1940-2000 based on 6 social indicators (variables): • Population • Housing Units • Non-White Population • Below College Education • Median Value of Housing Unit • Blue Collar Occupation • Data Source: Los Angeles County Union Census Tract Data Series, 1940 -1990 (Ethington et al. 2000) • Re-aggregate historical census data to Census 2000 boundaries • Calculate proportion of Census tracts enclosed in each of 2000 tracts and allocating variables accordingly Factors that influence SV Differential access to resources Wealth/Poverty 1000 people 100 km² 700 people 70 km² 300 people 30 km² 1990 2000

  5. Social Vulnerability (1940-2000)

  6. Mean SVI 1940-2000

  7. Social Vulnerability + Hazardous Event Vulnerability to Specific Event Earthquake Scenario (HAZUS-MH): Northridge 1994

  8. Vulnerability to Specific Event (cont.) Social Vulnerability (SV) SV + PGA

  9. Combining Physical and Social Vulnerability Biophysical Vulnerability Social Vulnerability Place Vulnerability + + = Hazardous Event

  10. Work Ahead • Integrate biophysical risk (e.g. frequency of hazardous events) with social risk to understand place-based composite vulnerability • Run several existing HAZUS earthquake scenarios in each decade 1940-2000 • Reconstruct building inventory 1940-2000 for input to HAZUS • Compare historical trends in vulnerability to earthquakes • Predict future risk

  11. Acknowledgements Place-Based Decision Support for Spatial and Temporal Transference of Risk and Hazards John Wilson GIS Research Laboratory Thomas Jordan Southern California Earthquake Center Jennifer Swift Civil & Environmental Engineering Mark Benthien Earth Sciences Zaria Tatalovich Geography Susan Cutter Hazards Research Lab Madilyn Fletcher Marine Sciences Cary Mock Geography Walter Piegorsch Statistics John Rose Computer Science & Engineering John Shafer Earth Sciences and Resources Institute Matt Schmidtlein

More Related