A Geospatial Liquefaction Model.
Daley, Davene.
2012
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Abstract: Recent earthquakes, such as the 2011 Christchurch, New Zealand
earthquake have demonstrated the significant damage potential liquefaction poses to
communities. On the regional scale, liquefaction hazard mapping is primarily dependent on
the surficial geology to identify liquefaction susceptible units and geotechnical soil data
are used to account for the variability within units. How... read moreever, these studies are costly,
therefore not widely available and do not report meaningful probabilities. Thus, there is a
need to develop a method of liquefaction hazard mapping that is dependent on globally
available geospatial data that can be used in rapid hazard mapping. Logistic regression and
ROC curve analysis were used to develop and validate a probabilistic geospatial
liquefaction model based on data from the 1995 Hygo-ken Nanbu earthquake in Kobe, Japan.
The predicted probabilities of the model successfully captured the spatial distribution of
the observed liquefaction features in Kobe. To assess the general applicability of the
model, the model was tested in Christchurch, New Zealand and the predictive performance
compared to a similar model developed in Christchurch and tested in Kobe. Overall results
suggest that on a regional scale, liquefaction occurrences can be assessed using only
globally available geospatial data.
Thesis (M.S.)--Tufts University, 2012.
Submitted to the Dept. of Civil Engineering.
Advisor: Laurie Baise.
Committee: Eric Thompson, and Richard Vogel.
Keywords: Civil engineering, and Geological engineering.read less - ID:
- fj236d88t
- Component ID:
- tufts:20787
- To Cite:
- DCA Citation Guide EndNote
