Functionality

This document describes InaSAFE's functionality in regard to what inputs are needed to carry on an analysis. At the highest level InaSAFE will take a hazard layer (such as ground shaking, water depth or ash load) and an exposure layer (such as population density or building footprints) and combine them according to an impact function to produce an impact layer and a report.

Hazard layers

The supported hazard layers are:

+-----------+-------------+-------------------+---------------+--------------------+--------------+ |Hazard |Spatial type |Hazard type |Attribute name |Hazard units/fields |Parameters | +===========+=============+===================+===============+====================+==============+ |Volcano |Raster |Ash load |N/A |kg/m^2 | | +-----------+-------------+-------------------+---------------+--------------------+--------------+ |Volcano |Point |Distance from vent |Name |text |Radius [km] | +-----------+-------------+-------------------+---------------+--------------------+--------------+ |Volcano |Polygon |Category |KRB |text | | +-----------+-------------+-------------------+---------------+--------------------+--------------+ |Earthquake |Raster |Shakemap |N/A |MMI | | +-----------+-------------+-------------------+---------------+--------------------+--------------+ |Flood |Raster |Depth |N/A |m |Threshold [m] | +-----------+-------------+-------------------+---------------+--------------------+--------------+ |Flood |Polygon |Wet/Dry |affected |1/0 |Threshold [%] | +-----------+-------------+-------------------+---------------+--------------------+--------------+ |Tsunami |Raster |Depth |N/A |m |Threshold [m] | +-----------+-------------+-------------------+---------------+--------------------+--------------+

Exposure layers

========== ============ ================== ============== =================== Exposure Spatial type Exposure type Attribute name Hazard units/fields ========== ============ ================== ============== =================== Population Raster Density N/A People per pixel Structures Point Structure type type text Structures Polygon Structure type type text ========== ============ ================== ============== ===================