# Integrated Earthquake Catalog III: Gakkel Ridge, Knipovich Ridge, and Svalbard Archipelago
## 4 Conclusions
This approach allows for a significant expansion of the interval for converting magnitudes to proxy-\(MW\), increases statistics, and thus increases the reliability of the conversion. The \(MW^{\rm GCMT}\) magnitude is only determined for strong earthquakes with \(M\) > 5.0. The use of correlations with \(m\)\(l\)\(l\)\(l\)\(l\)\(l\)\(l\)\(l\) and \(ML^{\rm BER}\) allows for an extension of the interval to \(M\) of the order of 1. Strictly mathematically, this is not proof of the linearity of ratios between different magnitudes, but it is a weighty argument in favor of such an assumption;
5. The level of registration significantly varies over time and differs in sub-regions. The best registration level is on Svalbard (\(Mc\) = 1.7 after 2012), where there are manyseismic stations of the BER, NORSAR, and KOLA networks. A good registration level is apparent in the Knipovich Ridge (\(Mc=2.8\) after 2012), which is provided by Norwegian and Russian stations on Svalbard and Danish DNK stations in Greenland. The worst registration level is in the Gakkel Ridge (\(Mc=4.0\)), which is not surprising. The nearest seismic stations of FCIAR are located on the archipelagos of Severnaya Zemlya and Franz Josef Land, approximately 600 km from the seismic zone. The distance from Svalbard stations to the Gakkel Ridge is approximately the same;
* 6. The integrated earthquake catalog created and reported in this paper is intended for a wide range of researchers involved in both the study of the seismic regime of the Arctic and, in general, seismic hazard assessment [35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46]. Presented here, the integrated earthquake catalog, along with the author's Arctic catalogs [27, 28], provides an important contribution to the development of an Arctic Big Data system. Its creation is one of the important requirements for starting a full-scale system analysis of geophysical dynamics in the Arctic;
* 7. Figure 56 (see Supplementary) presents all three created integrated earthquake catalogs for the Arctic zone of the Russian Federation. The integrated catalog of Arctic regions I, II, and III contains 45,793 events. In the Svalbard region, 12 duplicates were identified and removed. We believe that the magnitude scale is homogeneous, because all magnitudes were converted to proxi-Mw. The catalog is available to the public at: [[http://www.wdcb.ru/arctic_antarctic/arctic_seism.html](http://www.wdcb.ru/arctic_antarctic/arctic_seism.html)]([http://www.wdcb.ru/arctic_antarctic/arctic_seism.html](http://www.wdcb.ru/arctic_antarctic/arctic_seism.html)) (accessed on 1 August 2023). **Supplementary Materials:** The following supporting information can be downloaded at: [[https://www.mdpi.com/article/10.3390/app132212422/s1](https://www.mdpi.com/article/10.3390/app132212422/s1)]([https://www.mdpi.com/article/10.3390/app132212422/s1](https://www.mdpi.com/article/10.3390/app132212422/s1)), Figure S1: Schematic coverage map for catalogs I (Eastern Sector), II (Western Sector) and III (75\({}^{\circ}\) N, 10\({}^{\circ}\) W; 88\({}^{\circ}\) N, 10\({}^{\circ}\) W; 88\({}^{\circ}\) N, 140\({}^{\circ}\) E; 77\({}^{\circ}\) N, 140\({}^{\circ}\) E; 77\({}^{\circ}\) N, 100\({}^{\circ}\) E; 84\({}^{\circ}\) N, 100\({}^{\circ}\) E; 84\({}^{\circ}\) N, 25\({}^{\circ}\) E; 75\({}^{\circ}\) N, 25\({}^{\circ}\) E). It includes the Svalbard Archipelago and adjacent areas (75\({}^{\circ}\) N-84\({}^{\circ}\) N, 10\({}^{\circ}\) E-25\({}^{\circ}\) E), the Knipovich Ridge, Molloy and Spitsbergen fracture zones (75\({}^{\circ}\) N-83\({}^{\circ}\) N, 10\({}^{\circ}\) W-10\({}^{\circ}\) E), and the Gakkel Ridge (the rest of the studied area); Table S1: Statistics of the ISC catalog; Figure S2: Distribution of local depth for events with \(M\leq 2.2\) in Svalbard; Figure S3: Distribution of the metric for events within the source earthquake catalogs (Table 1).