日本茨城县近海发生5.9级地震：东京有震感、无海啸威胁
东京 — 日本气象厅说，11月9日下午1时52分，日本茨城县近海发生5.9级地震，震中位于北纬36.2度、东经142.2度，震源深度约10公里，首都东京有震感；气象厅表示，这次地震没有引发海啸之虞。
气象厅说，宫城县、福岛县中通与滨通地区、茨城县北部和栃木县南部部分地区录得震度3，东京的荒川区与足立区等地也有震感。截至发稿时，当地没有传出人员伤亡或财产损失的报告。
美国地质调查局（USGS）对同一次地震的测定为5.7级，发生时间为协调世界时4时52分，也就是美西时间11月8日晚8时52分，震源深度24.2公里，震中在茨城县波崎东北偏东约106公里海域，事件编号为us7000tx1f。USGS发出绿色警报，表示这次地震造成伤亡与损失的可能性低。两家机构给出的震级与深度不同，源于测定方法不同，本稿两说并陈。
震中海域近期地震不断：11月6日，同一海域曾发生6.1级地震。日本列岛位于环太平洋地震带上，多个板块在此交汇，地震活动频繁，气象厅与USGS都在持续监测后续震动。
关联：日本茨城县波崎东南144公里海域发生6.1级地震：震源深度29公里、无海啸威胁
（来源：日本气象厅）
Magnitude 5.9 Earthquake Strikes off Ibaraki Prefecture, Japan: Felt in Tokyo, No Tsunami Threat
TOKYO — A magnitude 5.9 earthquake struck off the coast of Ibaraki Prefecture, Japan, at 1:52 p.m. local time on November 9, with an epicentre at 36.2 degrees north latitude and 142.2 degrees east longitude and a depth of about 10 kilometres, the Japan Meteorological Agency said. Tremors were felt in Tokyo, and the agency said there was no concern of a tsunami from the quake.
The agency said shaking of intensity 3 on Japan's seismic scale was recorded in parts of Miyagi Prefecture, the Nakadori and Hamadori districts of Fukushima Prefecture, northern Ibaraki Prefecture and southern Tochigi Prefecture, and tremors were also felt in areas including Tokyo's Arakawa and Adachi wards. There were no immediate reports of casualties or property damage.
The U.S. Geological Survey (USGS) measured the same event at magnitude 5.7, at 04:52 UTC, which is 8:52 p.m. Pacific time on November 8, at a depth of 24.2 kilometres, with an epicentre about 106 kilometres east-northeast of Hasaki in Ibaraki Prefecture, under event code us7000tx1f. The USGS issued a green PAGER alert, indicating a low likelihood of casualties or damage. The two agencies' magnitude and depth figures differ because of different measurement methods, and both are presented here.
The offshore area has seen a series of quakes in recent days: a magnitude 6.1 earthquake struck the same waters on November 6. Japan sits on the Pacific Ring of Fire, where several tectonic plates meet, and both the agency and the USGS continue to monitor further activity.
(Source: Japan Meteorological Agency)
来源：日本气象厅
发布：GSM·美国（发布链接）
图片来源：图：日本茨城县大洗町大洗海岸与海中的神矶鸟居（资料图）。Σ64 摄，CC BY 3.0，经 Wikimedia Commons。 / Photo: The Oarai coast and the Kamiiso torii gate in Oarai, Ibaraki Prefecture, Japan (file photo). Photo by Σ64, CC BY 3.0, via Wikimedia Commons.
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