Ruapehu volcano (North Island, New Zealand): the lake temperature has decreased / VolcanoDiscovery

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Ruapehu volcano (North Island, New Zealand): the lake temperature has decreased

Tuesday Aug 11, 2020 08:58 AM | BY: MARTIN

Ruapehu volcano today (image: GeoNet)

GeoNet observatory reported that since April 2020, lake temperature has decreased from a high of 42°C to around 22-23 °C. This lower lake temperature is normal for Crater Lake. To keep the lake at this temperature, low-level heat must continue to flow into the lake. This indicates that the underlying vent area is open to volcanic gases and hydrothermal fluids. Other signs that point to this open vent are visible upwellings and sulphur slicks on the lake surface.
GeoNet volcanologists did a gas flight observations during the past three months and collected two lake samples for laboratory analysis. The results from these observations show an increase in H2S (hydrogen sulfide) gas and declines in CO2 (carbon dioxide) and SO2 gas (sulphur dioxide). This is consistent with more hydrothermal than magmatic chemical reactions in the lake.
The level of volcanic tremor intensity has been variable but weak, over the past three months. Small earthquakes continue to be located near the volcano.
Both the Volcanic Alert Level (level 1) and Aviation Code (Green) remain unchanged.
Source: GeoNet New Zealand volcano activity update 11 August 2020

All news about: Ruapehu volcano
Information about: Ruapehu volcano

Previous news

Tuesday, May 26, 2020

Ruapehu volcano (North Island, New Zealand): lake temperature remains unchanged

GeoNet reported that the activity at Crater Lake (Te Wai ā-moe) is often dominated by a heating-cooling cycle. These cycles last weeks-to-months. After peaking in April at 42°C, the lake cooled to 35°C by early May. Recent monitoring indicates continuous gas flux which has kept the temperature around 35°C through May. ... read all

Monday, May 04, 2020

Ruapehu volcano (North Island, New Zealand): lake temperature is cooling again

Crater Lake at Ruapehu volcano (image: @geonet/twitter)

GeoNet reported that during February-April, Crater Lake (Te Wai ā-moe) heated slowly to a peak temperature of 42ºC. Due to a heating-cooling cycle, there is a period of slow change before a cooling trend is clearly shown in the data. That trend is now confirmed with current temperatures close to 35ºC, with further slow cooling expected. Colour temperature is grey with a few surface slicks and no obvious upwelling. At that time the water level had dropped to about 30 cm below overflow but following this weekend’s rain the lake is again overflowing into the upper Whangaehu River. ... read all

Friday, Mar 20, 2020

Mt Ruapehu (North Island, New Zealand):increasing crater lake temperature

GNS Science Volcanologists have collected water samples from Crater Lake (Te Wai ā-moe) and the temperature of the lake is now 40°C. GeoNet believe the heating of the lake is the response to an input of hot gases and hydrothermal fluids in the wake of volcanic earthquakes beneath Mt Ruapehu in February. Prior to the earthquakes, the lake measured 24ºC. ... read all

Tuesday, Mar 03, 2020

Ruapehu volcano (North Island, New Zealand): increased seismic activity

GeoNet volcanologists have collected water samples from Crater Lake and measured volcanic gases in the plume last week. Seismic data have been analysed in detail. ... read all

Monday, Feb 24, 2020

Ruapehu volcano (North Island, New Zealand) activity update: seismic unrest recorded since the last update

GeoNet reported that seismographs detected a sequence of seismic events beneath Mt Ruapehu during 22-23 February. GNS Science volcanologists have categorised them as volcanic earthquakes. The larger events at the start of the episode are approximately magnitude 1.5 and later, smaller events are too small to be located by GeoNet’s earthquake detection-location system. ... read all

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Get our newsletter! Try our free app! Android \| iOS version Our New Book Volcano Discoveries: "One of the most eye-catching guides to the world’s volcanoes ever published. Volcano Tours Our expert volcanologists and photographers offer unique travel experiences: volcano expeditions, photo tours, and relaxed walking & study tours. Guaranteed tours 8-16 May 2021: From Stromboli to Etna - Sicila and Eolian Islands (Italy) : spaces available / : guaranteed / : few spaces left / : booked out		Ruapehu volcano sat by (c) Google Earth View Ruapehu volcano Ruapehu is one of New Zealand's most active volcanoes and forms the highest peak of the North Island. The andesitic stratovolcano has an age of around 200,000 years and contains a large summit crater containing a lake. Eruptions from the vent inside the lake often cause the lake to drain and form dangerous lahars. Stratovolcano 2797 m / 9,176 ft North Island, New Zealand, -39.28°S / 175.57°E Current status: normal or dormant (1 out of 5) Ruapehu webcams / live data \| Reports Ruapehu volcano books \| Tours Ruapehu volcano eruptions: Typical eruption style: Mildly explosive, formation of lahars Last earthquakes nearby Latest satellite images Sentinel hub \| Landsat 8 News and activity reports about Ruapehu volcano: Ruapehu volcano (North Island, New Zealand): the lake temperature has decreased Tuesday Aug 11, 2020 08:58 AM \| BY: MARTIN Ruapehu volcano today (image: GeoNet) GeoNet observatory reported that since April 2020, lake temperature has decreased from a high of 42°C to around 22-23 °C. This lower lake temperature is normal for Crater Lake. To keep the lake at this temperature, low-level heat must continue to flow into the lake. This indicates that the underlying vent area is open to volcanic gases and hydrothermal fluids. Other signs that point to this open vent are visible upwellings and sulphur slicks on the lake surface. GeoNet volcanologists did a gas flight observations during the past three months and collected two lake samples for laboratory analysis. The results from these observations show an increase in H2S (hydrogen sulfide) gas and declines in CO2 (carbon dioxide) and SO2 gas (sulphur dioxide). This is consistent with more hydrothermal than magmatic chemical reactions in the lake. The level of volcanic tremor intensity has been variable but weak, over the past three months. Small earthquakes continue to be located near the volcano. Both the Volcanic Alert Level (level 1) and Aviation Code (Green) remain unchanged. Source: GeoNet New Zealand volcano activity update 11 August 2020 All news about: Ruapehu volcano Information about: Ruapehu volcano Previous news Tuesday, May 26, 2020 Ruapehu volcano (North Island, New Zealand): lake temperature remains unchanged GeoNet reported that the activity at Crater Lake (Te Wai ā-moe) is often dominated by a heating-cooling cycle. These cycles last weeks-to-months. After peaking in April at 42°C, the lake cooled to 35°C by early May. Recent monitoring indicates continuous gas flux which has kept the temperature around 35°C through May. ... read all Monday, May 04, 2020 Ruapehu volcano (North Island, New Zealand): lake temperature is cooling again GeoNet reported that during February-April, Crater Lake (Te Wai ā-moe) heated slowly to a peak temperature of 42ºC. Due to a heating-cooling cycle, there is a period of slow change before a cooling trend is clearly shown in the data. That trend is now confirmed with current temperatures close to 35ºC, with further slow cooling expected. Colour temperature is grey with a few surface slicks and no obvious upwelling. At that time the water level had dropped to about 30 cm below overflow but following this weekend’s rain the lake is again overflowing into the upper Whangaehu River. ... read all Friday, Mar 20, 2020 Mt Ruapehu (North Island, New Zealand):increasing crater lake temperature GNS Science Volcanologists have collected water samples from Crater Lake (Te Wai ā-moe) and the temperature of the lake is now 40°C. GeoNet believe the heating of the lake is the response to an input of hot gases and hydrothermal fluids in the wake of volcanic earthquakes beneath Mt Ruapehu in February. Prior to the earthquakes, the lake measured 24ºC. ... read all Tuesday, Mar 03, 2020 Ruapehu volcano (North Island, New Zealand): increased seismic activity GeoNet volcanologists have collected water samples from Crater Lake and measured volcanic gases in the plume last week. Seismic data have been analysed in detail. ... read all Monday, Feb 24, 2020 Ruapehu volcano (North Island, New Zealand) activity update: seismic unrest recorded since the last update GeoNet reported that seismographs detected a sequence of seismic events beneath Mt Ruapehu during 22-23 February. GNS Science volcanologists have categorised them as volcanic earthquakes. The larger events at the start of the episode are approximately magnitude 1.5 and later, smaller events are too small to be located by GeoNet’s earthquake detection-location system. ... read all More on VolcanoDiscovery Fuego Fuego volcano photos: One of Central America's most active volcanoes, Fuego in Guatemala is in near-permanent explosive eruption with intermittent phases of increasing activity that generate lava fountains, lava flows and pyroclastic flows. Chile 7-16 Dec 2020 Solar Eclipse & volcano tour: A total solar eclipse will occur on 14 Dec 2020 and pass over southern Chile and Argentina. Chile's most active volcano Villarrica is located exactly on the center line where the eclipse will be best to observe. We offer you the unique chance to combine the eclipse with a tour to one the world's most beautiful volcanic areas - the Lake District in Chile. Germany Photos from Germany: Germany has a large number of volcanoes - most of them extinct, but the Eifel volcanic field is still potentially active. Volcano Calendar 2016 Volcano Calendar 2016: We're proud to present our new volcano calendar 2016: 13 different and attractive images of volcanoes, volcanic landscapes and phenomena taken during volcano tours over the past few years.

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Ruapehu volcano

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