Group 1 - An 8.7 magnitude earthquake occurred in the Avacha Bay area of the Kamchatka Peninsula on July 30, leading to approximately 1000 aftershocks detected in the region [1] - The aftershocks ranged from the minimum measurable magnitude to about 7, with expectations of thousands more aftershocks in the coming months [1] - The Kamchatka Volcanic Natural Park reported an eruption of the Klyuchevskaya Sopka volcano following the earthquake, with ash reaching approximately 6000 meters above the crater [1] Group 2 - The earthquake caused a tsunami with wave heights reaching up to 5 meters, prompting the evacuation of around 2700 people to the Kuril Islands [1] - Flooding in the tsunami-affected areas has receded as of the same day [1] - Experts believe that the earthquake is likely the final phase of over a year of seismic activity in the Kamchatka region, with a low probability of larger earthquakes occurring within the year [1]

俄罗斯科学院"统一地球物理局"堪察加分部通报，堪察加半岛附近海域7月30日发生8.7级地震，为1952 年以来该地区发生的最强地震。 当天，堪察加半岛近海再次发生两次6.5级和5.3级地震。此外，强震发生后，已伴随发生100多次5级及 以上余震。 受强震影响，太平洋沿岸多国发布海啸预警或警报，多地观测到海啸波。堪察加半岛在哪里？地震原因 是什么？影响几何？ 俄罗斯科学院"统一地球物理局"堪察加分部表示，地震震中距离堪察加边疆区首府——堪察加彼得罗巴 甫洛夫斯克市161公里。当地民众用手机拍摄的画面显示，地震发生时，晃动十分剧烈。 受强震影响，俄部分地区出现海啸。堪察加半岛部分地区和堪察加半岛以南的萨哈林州部分地区在地震 发生后已观察到数米高的海啸。当地约2700人已被疏散至安全区域。 堪察加半岛在哪里？ 堪察加半岛是俄罗斯第二大半岛，位于俄罗斯远东，隶属俄堪察加边疆区。堪察加半岛在环太平洋火山 地震带上，是俄罗斯乃至全球地震活动最活跃的地区之一。半岛上分布着300多座火山，包括28至36座 活火山。 在堪察加地区，太平洋板块与鄂霍次克板块碰撞，火山活动较为活跃。俄罗斯科学院地球物理研究所堪 察加分所30日通报 ...