Volcanic unrest continues at Whakaari (White Island) and some monitored parameters show an increase in activity but volcanologists are uncertain what this means.
Hazards on the island remain unchanged and the volcanic alert level remains at level 1.
Over the last several months GNS Science volcanologist Yannik Behr said the team had observed a change in the amount of SO2 gas output and level of volcanic tremor - both showing an increasing trend and are at the highest level since 2016.
The SO2 gas originates from magma (molten rocks) at depth and the data suggested a possible increase in gas passing through the volcano from depth he said.
"Volcanic tremors can occur for many reasons, including the movement of gas through the volcano, changes in the geothermal system, and even surface activity like geysering or ash emissions."