基拉韦厄警戒降至咨询级：第56期喷发暂停、山顶回胀，下一期熔岩喷泉至少一周后
美国地质调查局（USGS）夏威夷火山观测站11月9日晨发布每日更新说，基拉韦厄火山的 Halemaʻumaʻu 喷发目前处于暂停状态，火山警戒级别已降至「咨询」级、航空颜色代码降至黄色；此前11月6日的通报中，警戒级别还是「观察」级、代码橙色。
刚结束的第56期熔岩喷泉发生在11月5日下午12时10分至晚6时01分，只有北侧喷口喷发，喷泉最高约660英尺（200米），喷发柱高达18,000英尺（5,500米），共喷出约800万立方码（600万立方米）熔岩，倾斜仪记录到17微弧度的山顶收缩。
喷发停止后山顶重新膨胀，Uēkahuna 倾斜仪至今已回胀7.4微弧度，但11月9日午夜后趋于平坦。过去一天山顶没有定位到地震，两个裂谷带的地震和形变也都维持低水平；暂停期间山顶二氧化硫排放量通常为每天数千吨，信风正把火山气体吹向西南方的 Kaʻū 一带。
观测站按以往各期的规律判断，下一期熔岩喷泉至少要一周多以后。基拉韦厄自2024年12月23日起间歇喷发，各期喷泉一般持续不到12小时，期间隔着两周以上的暂停期。（来源：美国地质调查局）
Kilauea Alert Lowered to Advisory as Episode 56 Pauses and the Summit Reinflates, With the Next Fountaining Likely More Than a Week Away
The U.S. Geological Survey's Hawaiian Volcano Observatory said in its daily update on the morning of November 9 that the Halemaʻumaʻu eruption of Kilauea is currently paused, and the volcano alert level has been lowered to Advisory with an aviation color code of Yellow, down from Watch and Orange in the November 6 update.
Episode 56, which just ended, fountained between 12:10 p.m. and 6:01 p.m. on November 5 from the north vent only, with fountains reaching about 660 feet (200 meters), an eruptive plume as high as 18,000 feet (5,500 meters), and roughly 8 million cubic yards (6 million cubic meters) of lava erupted, while tiltmeters recorded 17 microradians of summit deflation.
Since the fountaining stopped, the summit has been reinflating: the Uēkahuna tiltmeter has recovered 7.4 microradians of inflationary tilt, though the trend went relatively flat after midnight on November 9. No earthquakes were located at the summit in the past day, seismicity and deformation in both rift zones remain low, and sulfur dioxide emissions during the pause are typically several thousand tonnes per day, with trade winds carrying volcanic gas southwest toward Kaʻū.
Based on the pattern of previous episodes, the observatory judges the next lava fountaining episode is likely more than a week away. Kilauea has been erupting episodically since December 23, 2024, with fountaining episodes generally lasting less than 12 hours and separated by pauses of two or more weeks. (Source: U.S. Geological Survey)
来源：美国地质调查局
发布：GSM·美国（发布链接）
图片来源：图：Halemaʻumaʻu 火山口在本轮喷发系列第14期（2025年3月20日）的熔岩喷泉，高约160米。Wikimedia Commons 图片（公共领域，美国地质调查局）。 / Photo: Lava fountaining at Halemaʻumaʻu crater during episode 14 of the current eruption series, on March 20, 2025, reaching about 160 meters. Image via Wikimedia Commons (public domain, U.S. Geological Survey).
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