Field and lab update

The Tephra Seismites have had a particularly busy couple of months. Our coring fieldwork was completed in September, with cores collected from six further lakes.

Photo of part of a lake. An inflatable boat and pontoon raft are lashed together in the middle of the lake. Three people sit on the boat, facing the raft, where two people are standing, holding a long rod that projects through the centre of the raft into the lake.
Coring at Ngārotoiti. Left to right: Dr Marcus Vandergoes, Henry Gard, Joe Butterworth, Dr Vicki Moon, Dr Tehnuka Ilanko. Photo: D. Lowe.

We have since completed X-ray Computer Tomography (CT) scans of all these new cores. Over the past few weeks, we cut, opened, and described all remaining cores from both of our 2022 field campaigns. This came to a total of 51 separate logs! As well as making detailed descriptions of key tephras and any deformation features, we collected samples for grainsize analyses.

In the coming weeks, will continue labwork on these samples and study the 3D imagery provided by the CT scanning.

A sincere thanks to all those involved with this most recent work, including our GNS Science and Lakes380 colleagues Dr Marcus Vandergoes and Henry Gard for their expert coring support; skipper Joe Butterworth; Ngā Iwi Tōpū O Waipā, private landowners, the Department of Conservation, and Waipā District Council, for fieldwork and access permission; and Nic Ross and Hamilton Radiology for CT scanning.

One thought on “Field and lab update

  1. As an Engineer with a long-term interest in seismic hazard I always look forward to and find it interesting to receive the updates of the research your team is undertaking. Keep up the good work.


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