Halemaumau Crater (11 March 2025) (Kilauea Volcano, Hawaii) 1 : 無料・フリー素材/写真
Halemaumau Crater (11 March 2025) (Kilauea Volcano, Hawaii) 1 / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | (public domain, screen capture video from the V1 web camera on the northwestern rim of Kilauea Volcano's summit caldera)------------------------------------------------Mt. Kilauea is the world’s most active volcano. It sits atop the Hawaii Hotspot in the central Pacific Ocean and had a decades-long eruption from 1983 to 2018. Eruptive activity started up again in December 2020 and continued into 2025. Kilauea lavas are basaltic in composition, but the physical appearance of Kilauea’s output varies tremendously. Many of Kilauea’s eruptions occurred along its East Rift Zone, a fracture system extending ~eastward from the summit vent area. Seen here is lava erupting at the summit of Kilauea Volcano from 6:39 to 6:40 AM, local time, on 11 March 2025. This is "episode 13", which started in the early morning of 11 March 2025 and ended in the mid-afternoon on the same day. "Episode 1" of the current eruption series started on 23 December 2024.--------------------------------Info. from the Hawaiian Volcano Observatory (HVO) & United States Geological Survey (USGS):Episode 13 of the ongoing Halemaumau eruption began at 2:36 AM Hawaiian Standard Time on March 11. Fountains from the north vent reached heights of 400-500 feet (120-150 meters) by 3:30 AM Hawaiian Standard Time and over 600 feet (180 meters) by 4:00 AM Hawaiian Standard Time. Both the north and south vents are currently producing lava fountains with heights of 460-520 feet (140-160 meters). Lava flows from both vents have covered 40-50% of Halemaumau crater floor.Episode 13 was preceded by small, sporadic spatter fountains 15-30 feet high (5-10 meters) that began at approximately 1:30 PM Hawaiian Standard Time on March 10 within the north vent and continued to increase in intensity until 6:35 PM Hawaiian Standard Time when spattering could be seen on the streaming webcam (V1). Spattering continued to increase during the night and into the early morning hours of March 11.Lava erupted from the north vent at 2:36 AM Hawaiian Standard Time March 11 and high fountains began about 10 minutes later, which reached heights of 400-500 feet (120-150 meters) by 3:30 AM Hawaiian Standard Time and over 600 feet (180 meters) by 3:40 AM Hawaiian Standard Time. Lava flows began from the south vent at 3:12 AM Hawaiian Standard Time and fountains from the south vent started by 3:30 AM Hawaiian Standard Time. These reached heights of 200 feet (60 meters) by 3:40 a.m. HST. This morning, high fountaining from both vents continues and is currently at heights of 460-520 feet (140-160 meters). Lava flows from both vents have covered 40-50% of Halemaʻumaʻu crater floor.Tilt turned to a deflationary direction at about 2:36 AM Hawaiian Standard Time, together with the start of episode 13, and as of this morning, the amplitude indicates that the magma chamber feeding the eruption has lost about two-thirds of the pressure that it built up during the pause. Seismic tremor began increasing just before 2:30 AM Hawaiian Standard Time when fountains within the north vent picked up and continues this morning. Only one earthquake was detected in Kīlauea’s summit region. Measurements of SO2 emissions require daylight and are expected to be collected later today, weather permitting. Based upon previous measurements, SO2 emissions are expected to be greater than 10,000 tons per day. Peleʻs hair was reported falling this morning in the town of Pahala about 25 miles (40 kilometers) downwind to the southwest of Halemaumau.Episodes of Halemaumau lava fountaining since December 23, 2024, have continued for 13 hours to 8 days and have been separated by pauses in eruptive activity lasting less than 24 hours to 12 days. Strands of volcanic glass known as Pele’s Hair have been reported on surfaces throughout the summit area of Hawaii Volcanoes National Park and surrounding communities. --------------------------------Locality: Halemaumau Crater, southwestern corner of Kilauea Crater (Kilauea Caldera), southeastern Hawaii, central Pacific Basin--------------------------------Info. at:en.wikipedia.org/wiki/Halemaʻumaʻu |
| 撮影日 | 2025-03-23 17:40:08 |
| 撮影者 | James St. John |
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