日本波崎东北74公里海域发生5.5级地震 震源深度31.7公里、无海啸威胁
据美国地质调查局（U.S. Geological Survey，USGS）测定，2026年11月7日11时07分（协调世界时），日本波崎（Hasaki）东北74公里海域发生5.5级地震，震中位于北纬36.188度、东经141.440度，震源深度31.7公里。波崎位于日本茨城县神栖市，地处本州东部太平洋沿岸，震中海域在其东北方向的近海。
USGS 对此次地震给出绿色警报级别，意味着由地震造成人员伤亡与经济损失的可能性较低；此次地震的最大估计烈度为IV度。USGS 指出，基于地震的位置与现有数据，此次地震不构成海啸威胁，太平洋海啸预警中心与 USGS 均未就此发布海啸预警。截至 USGS 本次更新时，已有约10份有感报告提交。
这是日本东部海域近日的又一起中强地震：11月6日，波崎东南144公里海域曾发生6.1级地震；11月7日稍晚，静冈县 Hamakita 西北10公里处另发生一起5.5级地震—USGS 事件编号与震中均不同，与本起为两起独立事件。地震参数为 USGS 测定结果，官方后续可能修订。
Magnitude 5.5 Earthquake Strikes 74 km Northeast of Hasaki, Japan; No Tsunami Threat
A magnitude 5.5 earthquake struck 74 kilometers northeast of Hasaki, Japan, at 11:07 UTC on November 7, 2026, according to the U.S. Geological Survey (USGS). The epicenter was located at 36.188 degrees north latitude and 141.440 degrees east longitude, at a depth of 31.7 kilometers. Hasaki is a coastal district of Kamisu in Ibaraki Prefecture, on Japan's Pacific coast of eastern Honshu, and the epicenter lay offshore to its northeast.
USGS issued a green alert for this event, indicating a low likelihood of casualties or damage, with a maximum estimated intensity of IV on the Modified Mercalli scale. Based on the earthquake's location and available data, there is no tsunami threat associated with this event, and no tsunami warning was issued. About ten felt reports had been submitted to USGS at the time of its update.
The quake is the latest in a run of moderate events off eastern Japan: a magnitude 6.1 earthquake struck 144 kilometers southeast of Hasaki on November 6, and a separate magnitude 5.5 earthquake struck 10 kilometers northwest of Hamakita in Shizuoka Prefecture later on November 7 — a distinct event with a different USGS event number and epicenter. Earthquake parameters are as measured by USGS and may be revised.
来源：美国地质调查局
发布：GSM·美国（发布链接）
图片来源：图：日本千叶县衔子市犬吠埼灯台与太平洋海岸，震中海域位于这片海岸东北方向（资料图，非本次地震现场）。At by At 摄，CC BY-SA 3.0，经 Wikimedia Commons。 / Photo: Cape Inubo Lighthouse and the Pacific coast in Choshi, Chiba Prefecture, Japan, southwest of the epicentral area (file photo, not a scene from this earthquake). By At by At, CC BY-SA 3.0, via Wikimedia Commons.
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