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DEVORA Presentations

View a compilation of DEVORA-related research in the form of presentations.

Our History

For more than 10 years, DEVORA (DEtermining VOlcanic Risk in Auckland) has been focused on preparing New Zealand’s largest city for a volcanic eruption – and the ongoing disruption.

Tags:Auckland Volcanic Field GNS Science research University of Auckland

A guide to Rangitoto, the volcano under a blood red sky

Learn about Auckland’s largest and youngest volcano – Rangitoto. Rangitoto is a basaltic shield volcano that erupted after the arrival of Polynesians in the Auckland region (c. 1280 AD).

Tags:basaltic education field guide geoscience lava New Zealand Rangitoto shield volcano Teaching

Matching volcanic ash to its source

The collation of whole-rock major and trace element data has led to the development of a method to correlate volcanic ash samples to their source volcanic centres.

Tags:Auckland Volcanic Field basalt correlation monogenetic tephra tephrochronology

Downhole seismometers lead to a refined velocity model

By refining the velocity model used to locate earthquakes, Auckland can be better prepared for an eruption from the volcanic field that lies beneath the region in New Zealand’s upper North Island.

Tags:Auckland Volcanic Field downhole seismometer Emergency Management GeoNet monitoring velocity model

Multiple melting points suggest erratic eruptions worldwide

Discrete melt batches that move at different depths and speeds may explain the erratic spatial and temporal pattern of eruptions in the Auckland Volcanic Field (AVF).

Tags:Auckland Volcanic Field basaltic geochemistry melting monogenetic Rangitoto

Calculating our size- a new volume estimate for the AVF

A highly specialised systematic volume estimation model has been developed for use in New Zealand’s Auckland Volcanic Field (AVF).

Tags:Auckland Volcanic Field diatreme LiDAR magma phreatomagmatic

Conundrum of Auckland’s Rangitoto volcano

Hazard scenarios for monogenetic (clustered) volcanism must cover a range of eruption periods as revealed by a study of Rangitoto.

Tags:basalt eruption magma monogenetic Rangitoto

Cultural approach to geosite evaluation

A unique convergence of ecological, geological and cultural values in South Auckland showcases the need to integrate multiple elements in volcanic site evaluations.