Tectonic disaster trends since 1960 and research into the accuracy of data

Frequency of seismic and volcanic processes

• seismic and volcanic processes cannot be prevented

• Risk seems to be increased and human factors as the occurrence of tectonic hazards do not show significant increase

• Hydrological and meteorological hazards have increased slightly and occur most

overall patterns since the 1960s

• total number of recorded hazards has increased

• Number of disasters are significantly and peaked in the early 2000s, which seems to be an anomaly

• Number of deaths have decreased overall apart from mega disaster spikes

• The number of people affected is increasing some hazards

• Economic costs have all significantly increased for all

why do we use rolling means?

as nature fluctuates

how good are disaster statistics

• there is not an agreed-upon definition or a numerical threshold for disasters

• It depends if only direct deaths were counted or secondary ones were counted too

• Local/regional events are often under recorded

• Reporting of deaths can be politically biased, e.g. to protect the tourism industry

• Statistics are difficult to collect in rural areas are areas of low development and densely populated settlements

• Time trend and analysis is difficult as type of collection has changed and can be skewed by mega disasters