Explained: The science of ... aftershocks
By noon today, scientists had recorded nearly 5000 aftershocks from last Monday's big shake. But what are aftershocks and what can they tell us? Jamie Morton explains.
AdvertisementAdvertise with NZME.
Latest fromInstitute of Geological & Nuclear Sciences
Pumice raft points to mystery eruption
A pumice raft spotted by a Royal New Zealand Air Force crew has pointed to a possible major undersea eruption somewhere in the Tonga-Kermadec volcanic arc.
200km quake monster: How it jumped
Monday's 7.8 quake was bafflingly complex in some ways, but simple in others. Science reporter Jamie Morton delved into the data to look at what we know so far.
M5.0 aftershock hits near Kaikoura
The probability of another 7.0-plus quake striking have fallen further, GeoNet reported today, but large aftershocks are still likely across a large area of New Zealand.
Making sense of Kaikoura's new coast
Scientists have revealed the extent of uplift on the South Island's northeastern coast - observing that in some places the land was raised by two metres.
Probability of 7+ quake this month: 27%
The probability of another plus-7 magnitude quake within the next month has fallen - but the chances of multiple large aftershocks remains a virtual certainty.
Q&A: Science at quake's ground zero
Science reporter Jamie Morton talks to GNS Science earthquake geologist Dr Rob Langridge, who has been on the ground mapping damage around Marlborough.
Kaikoura quake: a scientist's perspective
What's it like to be part of the team at GNS Science when a big quake hits? Seismologist Dr Helen Anderson shares an insight.
Volcanoes keep quiet amid quakes
It appears our volcanoes have slept through the Kaikoura quake, with monitoring equipment showing only a few tremors over recent days.
GeoNet: 22% chance of 7.0+ aftershock this month
The probability of another huge quake over magnitude 7 in the next 24 hours has been put at 4 per cent - but at 14 per cent in the next week and 22 per cent across the next 30 days.
7.5 quake: Five big questions answered
Could Monday's quake trigger a sleeper tsunami or an Alpine Fault quake? Are we living in an era of quakes? Science reporter Jamie Morton tackles the big questions.
Watch: 100,000 landslides - one filmed
The now-named Kaikoura Earthquake triggered 100,000 landslides in Northern Canterbury and southern Marlborough.
How has the quake warped NZ?
Scientists are trawling through data to see how New Zealand has shifted following the latest quake.
Q&A: Revealing the threat that lies beneath
Science reporter Jamie Morton talks to GNS Science earthquake geologist Dr Rob Langridge about a renewed effort to catalogue a nationwide web of active faults threatening New Zealand.