**Acknowledgements**

This work is supported by the Russian Foundation for Basic Research, Grant No. 18–05–70018 "Geodynamic situation of oil and gas-bearing basins of Barents-Kara region according to the recent seismotectonic data."

We are grateful to Khutorskoi, DSс, MD (Geological Institute of the Russian Academy of Sciences, Moscow), for his recommendations on geodynamic studies of the Arctic. We also acknowledge NORSAR (Norway) and the Kola Branch of the United Geophysical Survey, Russian Academy of Sciences, for the joint work in compiling the unified seismic catalog for the European sector of the Arctic.

**51**

**Author details**

Evgeniy Rogozhin1

Natalia Kapustyan1,2

Russian Federation

Russian Federation

provided the original work is properly cited.

*Recent Geodynamics and Seismicity of the European Arctic DOI: http://dx.doi.org/10.5772/10.5772/intechopen.80800*

© 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium,

1 Institute of Physics of the Earth of the Russian Academy of Sciences, Moscow,

2 N. Laverov Federal Center for Integrated Arctic Research, Arkhangelsk,

\*, Irina Basakina<sup>2</sup>

and

, Galina Antonovskaya<sup>2</sup>

\*Address all correspondence to: essm.ras@gmail.com

## **Conflict of interest**

The authors declare no conflict of interest.

*Recent Geodynamics and Seismicity of the European Arctic DOI: http://dx.doi.org/10.5772/10.5772/intechopen.80800*

*Arctic Studies - A Proxy for Climate Change*

on average.

lower and upper crusts (**Figure 6**).

(about 70 mW/m<sup>2</sup>

are 50 mW/m<sup>2</sup>

**4. Conclusion**

average).

such conclusions.

**Acknowledgements**

**Conflict of interest**

region according to the recent seismotectonic data."

The authors declare no conflict of interest.

to slow eclogitization in the lower crust. This is supported by the mean heat flow

part of profile C–D, there are only singular instances of heat flow data, and these

Seismic activity manifests itself in most of profile C–D, although it decreases moving from the junction zone between the Svalbard plate and the MOR. This may be related in part with the absence of permanently operating seismic stations in the Kara Sea region, because the model from [18] suggests that there should be weak seismicity at the junction of the Barents Sea and North Kara plates. The East Barents step zone (**Figure 4**) has the only seismic event recorded (lat 80.11, long 72.71, ML = 2.7), supposedly above the domain of high-velocity inhomogeneities in the

Comparison of the geological and geophysical fields makes it possible to combine together different indicators of geodynamic processes. We have revealed the relationship between seismicity and deep structure, as well as the correspondence of seismicity to both the most geodynamically active structures and zones of concentrated tectonic stresses. According to the compiled unified catalog, the most geodynamically active area in the Barents Sea region is the Svalbard anticline, where the greatest concentration of tectonic stresses is observed on the MOR side and zones with higher values of heat flow are distinguished (70–80 mW/m<sup>2</sup>

The recorded single earthquakes in the basins and troughs reflect manifestations of recent tectonic activity in the region, probably as a result of commonly developed high-velocity inhomogeneities in the lower and upper crusts or accumulation and release of stresses in weakened zones. This conclusion is, however, quite conditional because of a small time interval for which seismic data on the Barents Sea region are available. Seismological monitoring is necessary in the future to verify or refute

Manifestations of single earthquakes should be marked as promising areas for searching and prospecting for hydrocarbon fields within the limits of the South and North Barents basins, St. Anna Trough, and western Barents Sea Basin. Our studies supplement existing data on the structure and tectonics of the Barents Sea region.

This work is supported by the Russian Foundation for Basic Research, Grant No. 18–05–70018 "Geodynamic situation of oil and gas-bearing basins of Barents-Kara

We are grateful to Khutorskoi, DSс, MD (Geological Institute of the Russian Academy of Sciences, Moscow), for his recommendations on geodynamic studies of the Arctic. We also acknowledge NORSAR (Norway) and the Kola Branch of the United Geophysical Survey, Russian Academy of Sciences, for the joint work in

compiling the unified seismic catalog for the European sector of the Arctic.

), with an anomalous increase up to 97 mW/m<sup>2</sup>

. In the eastern

on

**50**
