# Integrated Earthquake Catalog II: The Western Sector of the Russian Arctic  
Inessa [PERSON]  
1 Geophysical Center of the Russian Academy of Sciences (GC RAS), 119296 Moscow, Russia; [EMAIL_ADDRESS] (L.A.V. ); [EMAIL_ADDRESS] (A.D.G. ); [EMAIL_ADDRESS] (P.N.S. ); [EMAIL_ADDRESS] (B.V.D. ); [EMAIL_ADDRESS] (N.A.S. ); [EMAIL_ADDRESS] (N.A.F.) [PERSON]  
1 Geophysical Center of the Russian Academy of Sciences (GC RAS), 119296 Moscow, Russia; [EMAIL_ADDRESS] (L.A.V. ); [EMAIL_ADDRESS] (A.D.G. ); [EMAIL_ADDRESS] (P.N.S. ); [EMAIL_ADDRESS] (B.V.D. ); [EMAIL_ADDRESS] (N.A.S. ); [EMAIL_ADDRESS] (N.A.F.) [PERSON]  
1 Geophysical Center of the Russian Academy of Sciences (GC RAS), 119296 Moscow, Russia; [EMAIL_ADDRESS] (L.A.V. ); [EMAIL_ADDRESS] (A.D.G. ); [EMAIL_ADDRESS] (P.N.S. ); [EMAIL_ADDRESS] (B.V.D. ); [EMAIL_ADDRESS] (N.A.S. ); [EMAIL_ADDRESS] (N.A.F.) [PERSON]  
1 Geophysical Center of the Russian Academy of Sciences (GC RAS), 119296 Moscow, Russia; [EMAIL_ADDRESS] (L.A.V. ); [EMAIL_ADDRESS] (A.D.G. ); [EMAIL_ADDRESS] (P.N.S. ); [EMAIL_ADDRESS] (B.V.D. ); [EMAIL_ADDRESS] (N.A.S. ); [EMAIL_ADDRESS] (N.A.F.) [PERSON]  
2 Institute of Earthquake Prediction Theory and Mathematical Geophysics of the Russian Academy of Sciences (IEPT RAS), 11997 Moscow, Russia; [EMAIL_ADDRESS] 2000-0001-997-2000-0001-997-20001-97-200  
In the paper [7], the earthquake catalog of the eastern sector of the Arctic zone of the Russian Federation (AZRF) was created by combining three regional catalogs (Yakutia, Northeast Russia, and Kamchatka) of the Geophysical Survey of the Russian Academy of Sciences (GS RAS) and the International Seismological Centre (ISC) with a unified magnitude scale, which is made available to the public. To confirm the feasibility of merging catalogs and the effectiveness of the algorithm, it should be noted that the obtained catalog [7] includes 23,254 events (1962-2020), of which 7781 are from ISC and 15,473 are from Russian catalogs. This article is a logical continuation of the study carried out in [7]. It is aimed at the creation of the integrated catalog of the western sector of the AZRF with unified magnitude estimates. The western sector of the AZRF that is considered in the present study is a seismically active region [8; 9] and includes the Arkhangelsk region, the Republic of Karelia, the Kola Peninsula, the western part of the Taymyr Peninsula, archipelago of Franz Josef Land, Novaya Zemlya, Severnaya Zemlya, and the basin of the White, Barents, and Kara Seas. In [10], information is provided on 10 earthquakes with \(M\geq 5.0\) that occurred in the region starting from the 17 th century. It should be noted that the epicenters of four events are located in the continental part of the region, while the others are significantly further north in the Barents-Kara Basin. The strongest earthquake known in the western sector of the AZRF occurred in the latter region (14 October 1908, \(M=6.6\)) [10; 11]. For events that occurred in the pre-instrumental period of seismic observations, the coordinates of the epicenters and magnitude estimates have a significant uncertainty [12]. However, in recent years, a number of studies have been published in which the parameters of historical events have been redefined, including the considered region [11; 13; 14]. Many researchers note the modern seismicity of the Barents-Kara Basin in the transition zone from continent to ocean and the Novaya Zemlya Archipelago, where an earthquake with \(mb=4.8\) was registered on 11 October 2010 [15]. Seismic activity is observed on the Kola Peninsula and in the Karelia region. The Severnaya Zemlya Archipelago and the northern part of the Taymyr Peninsula are located within the Kara Plate. At the same time, only the northeast of the peninsula is characterized by seismic activity, where most of the earthquakes registered during the instrumental period are associated with the mouth of the Khatanga Bay [14].