Geological hazards

The Hunga-Tonga Hunga-Ha'apai volcano generated the biggest atmospheric explosion recorded on Earth in more than 100 years.

You’ll be blown away by what these women in science are doing onboard RV Tangaroa in the Tasman sea!

RiskScape is a software application for analysing natural hazard consequences.

Kaikōura Canyon reveals its muddy secrets

NIWA is leading a New Zealand partnership to map the South and West Pacific Ocean's seabed as part of a worldwide initiative to map the entire globe’s seafloor.

The risk of undersea landslides and their potential to cause tsunamis along New Zealand’s east coast is being investigated by scientists aboard the German research vessel RV Sonne as part of a month-long international collaboration.

A risk screening tool that identifies the presence-absence of shallow groundwater.

A new study has comprehensively mapped the immediate after effects of the January 2022 eruption of Hunga Tonga - Hunga Ha’apai, highlighting the risks of similar events.

The 2022 Tonga volcanic eruption triggered the fastest underwater flow ever recorded.

Areas of Kaikōura’s seabed show promising signs of recovery just four years after the 2016 earthquake, says NIWA.

Prior to 15 January, Hunga Tonga-Hunga Ha'apai was a little-known undersea South Pacific volcano with a long name. Within 24 hours, it  was a global phenomenon – the site of the largest atmospheric explosion in almost 150 years. Jessica Rowley looks at why a remote Tongan volcano took the world by storm.

A New Zealand-led team has completed the fullest investigation to date into January’s eruption of the underwater Tongan volcano.