Kilauea volcano (Hawai'i): summit water lake continues to rise

Fri, 7 Aug 2020, 09:23
09:23 AM | BY: MARTIN
Comparison of Kilauea's summit (water) lake between 2 August 2019 and 21 July 2020 (image: HVO)
Comparison of Kilauea's summit (water) lake between 2 August 2019 and 21 July 2020 (image: HVO)
Summi  lake at Kilauea volcano on 28 July 2020 with greenish zones (image: HVO)
Summi lake at Kilauea volcano on 28 July 2020 with greenish zones (image: HVO)
Thermal image of the lake at the summit of Kīlauea taken on 31 July (image: HVO)
Thermal image of the lake at the summit of Kīlauea taken on 31 July (image: HVO)
The Hawaiian Volcano Observatory (HVO) reported that the volcano's summit water lake has continued to rise since 25 July last year when water was first spotted at the bottom of Halema'uma'u pit crater inside the summit caldera.
Over the past year, the summit water lake has grown to more than 270 m (885 ft) long and 131 m (430 ft) wide, covering a surface area over 2.5 hectares (6 acres). The lake is over 40 m (130 ft) deep and contains a volume of approximately 480,000 cubic meters.
On 2 August 2019, only a small green pond approx. 6 ft (2 m) deep could be seen.
The image taken on 21 July 2020 shows a lake more than 130 ft (40 m) deep with shades of tan to brown and a sharp color boundary often cutting across the lake.
The photo taken on 28 July 2020 shows vibrant lake colors with a zone of aquamarine water in the west end. These greenish zones tend to be slightly hotter and appear to be zones of water influx.
The maximum temperatures on the lake surface at this time were measured at about 82 degrees Celsius (180 degrees Fahrenheit).
Surface water at the summit presents a potential future hazard at the summit: Magma interacting with near-surface water can, in some circumstances, trigger violent steam-blast explosions.
Source: Hawaiian Volcano Observatory volcano activity update 7 August 2020

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Sat, 4 Apr 2020, 00:51
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