Deep tectonic tremor has been observed along major subduction zones and several continental strike-slip faults around the Pacific Rim and the Caribbean. However, it has not be widely identified in other tectonically active regions such as the Alpine-Himalayan orogenic belt yet. Here we present dynamically triggered tremors and microearthquakes in the Caucasian Region following the 2023 Mw 7.8 and Mw 7.5 mainshocks in the 2023 Kahramanmaraş, Türkiye, earthquake sequence. We observe triggered deep tectonic tremors within Azerbaijan, where seismological evidences suggest pre-existing subduction slabs. Meanwhile, we document cases of triggered earthquakes in Azerbaijan and Georgia, and Javakheti highland near the border of Georgia and Armenia. These triggered earthquakes are either associated with mud volcanism or volcanic formations. Our results highlight a variety of responses to dynamic stress perturbations, suggesting high susceptibility to dynamic stress perturbations and a broad spectrum of slip behaviors for critically stressed faults in the Caucasian region.

中文翻译：

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2023 年土耳其 Kahramanmaraş 地震序列之后高加索地区动态触发的构造震颤和地震


沿着环太平洋和加勒比地区的主要俯冲带和几个大陆走滑断层观察到了深部构造震颤。然而，它尚未在其他构造活跃的地区得到广泛识别，例如阿尔卑斯-喜马拉雅造山带。在这里，我们展示了 2023 年土耳其卡赫拉曼马拉什地震序列中 2023 年 Mw 7.8 和 Mw 7.5 主震之后高加索地区动态触发的震颤和微地震。我们在阿塞拜疆境内观察到触发的深部构造震动，地震学证据表明那里存在预先存在的俯冲板块。同时，我们记录了阿塞拜疆和格鲁吉亚以及格鲁吉亚和亚美尼亚边境附近的 Javakheti 高地引发地震的案例。这些触发的地震要么与泥火山活动有关，要么与火山形成有关。我们的结果突出了对动态应力扰动的各种响应，表明高加索地区对动态应力扰动的高度敏感性和极重应力断层的广泛滑移行为。