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Tsunami evacuation time map for American Samoa predicted maximum tsunami (PMT) inundation zone and slow run speed

Dates

Publication Date
Time Period
2018

Citation

Jones, J.L., Jones, J.M., and Wood, N.J., 2018, Pedestrian tsunami evacuation results for two tsunami-inundation zones (2009 and probable maximum tsunami (PMT)) and four travel speeds (slow walk, fast walk, slow run, and fast run) for American Samoa: U.S. Geological Survey data release, https://doi.org/10.5066/P9USLV20.

Summary

The travel time map was generated using the Pedestrian Evacuation Analyst model (version 1.0.1 for ArcGIS 10.5) from the USGS (https://geography.wr.usgs.gov/science/vulnerability/tools.html). The travel time analysis uses ESRI's Path Distance tool to find the shortest distance across a cost surface from any point in the hazard zone to a safe zone. This cost analysis considers the direction of movement and assigns a higher cost to steeper slopes, based on a table contained within the model. The analysis also adds in the energy costs of crossing different types of land cover, assuming that less energy is expended walking along a road than walking across a sandy beach. To produce the time map, the evacuation surface output from the model [...]

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Shapefile: AmericanSamoa_PMTInundationZone_slowRun_179_timeMap.zip
AmericanSamoa_PMTInundationZone_slowRun_179_timeMap.CPG 5 Bytes
AmericanSamoa_PMTInundationZone_slowRun_179_timeMap.dbf 286 Bytes
AmericanSamoa_PMTInundationZone_slowRun_179_timeMap.prj 424 Bytes
AmericanSamoa_PMTInundationZone_slowRun_179_timeMap.sbn 308 Bytes
AmericanSamoa_PMTInundationZone_slowRun_179_timeMap.sbx 124 Bytes
AmericanSamoa_PMTInundationZone_slowRun_179_timeMap.shp 4.33 MB
AmericanSamoa_PMTInundationZone_slowRun_179_timeMap.shx 260 Bytes

Purpose

The objective of these data is to aid in characterizing population vulnerability to tsunami hazards in American Samoa based on fatality demographics and observations of evacuee behavior from the 2009 disaster, projection of probable maximum tsunami hazards in the area, and pedestrian evacuation modeling. This information provides direct assistance to tsunami-planning efforts in American Samoa but also provides insight on evacuation behavior and population vulnerability to other coastal communities throughout the world that are threatened by local tsunami hazards.

Map

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ScienceBase WMS

ScienceBase WFS

Communities

  • USGS Data Release Products

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