(BIVN) – Scientists recently published a new set of thermal maps showing the ongoing eruptive activity at the summit of Kīlauea volcano.
The USGS Hawaiian Volcano Observatory says a helicopter overflight on August 16 allowed for aerial visual and thermal imagery to be collected of Halema‘uma‘u crater, where lava continues to erupt.
No significant changes have been observed at the summit or in either rift zone, scientists reported on Thursday. The lava has been confined to the summit crater since the beginning of this eruption on September 29, 2021.
From the Thursday HVO update:
Halemaʻumaʻu Lava Lake Observations: Eruption of lava from the western vent into the active lava lake and onto the crater floor continued over the past 24 hours. The active part of the lava lake showed continuous surface activity. Surface activity, outside the lava lake, occasionally occurs from breakouts along the margins of the crater. Since the beginning of this eruption on September 29, 2021, the crater floor has seen a total rise of about 136 meters (446 feet). The volume of lava effused since the beginning of this eruption was approximately 102 million cubic meters (27 billion gallons) as measured on August 4, 2022.
Summit Observations: Summit tiltmeters began recording inflationary tilt around 3:00 p.m. yesterday afternoon in response to the lastest deflation-inflation event. Volcanic tremor remains above background levels. A sulfur dioxide (SO2) emission rate of approximately 1,150 tonnes per day (t/d) was measured on August 12, 2022.
Rift Zone Observations: No unusual activity has been noted along the East Rift Zone or Southwest Rift Zone; low rates of ground deformation and seismicity continue along both. Measurements from continuous gas monitoring stations downwind of Puʻuʻōʻō in the middle East Rift Zone remain below detection limits for SO2, indicating that SO2 emissions from Puʻuʻōʻō are negligible.
“Lava is presently visible from three public visitor overlooks in Hawai‘i Volcanoes National Park,” the USGS reports. “Keanakāko‘i Overlook and Kūpina‘i Pali (Waldron Ledge) can see the eruptive vent and lava lake, while Kīlauea Overlook can occasionally see lava ooze-outs in the southeast part of the crater.”