- A - Physics of the Earth's Interior
- B - Seismology
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C - Geomagnetism
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D - Physics of the Atmosphere
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- E - Hydrology
- P - Polar Research
- M - Miscellanea
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Online First
Seismicity of the Hornsund Region, Spitsbergen: Icequakes and Earthquakes
Volume: 308
Series: B-20
The paper describes the study of seismic events associated with dynamics of the Hans glacier in South Spitsbergen and an analysis of a series of tectonic earthquakes recorded in the South Spitsbergen region. The study is based on the recordings from the Hornsund seismological station and several measurements made by the author directly on the glacier. Two categories of seismic events were distinguished and related to dynamic processes within the glacier. The location of foci of icequakes and tectonic earthquakes was made. Physical parameters of foci were determined on the basis of spectral analysis; the shear-band model of seismic source was applied. The seismicity of the Hornsund region was related to the tectonics of the South Spitsbergen region.
CONTENTS
Abstract, ...3
1. Introduction, ...4
2. Seismic activity of the Hans glacier, ...8
3. Physical parameters of icequake foci: the Hans glacier, ...15
3.1 Field experiment, ...15
3.2 Foci location, ...18
3.3 Spectral analysis, ...25
3.4 Parameters of icequake foci, ...31
4. Physical parameters of tectonic earthquake foci, ...42
4.1 Seismicity of the Svalbard region, ...42
4.2 Location of foci, ...44
4.3 Focal parameters of earthquakes, ...48
5. Application of the shear-band model to the determination of focal parameters, ...59
5.1 Icequakes, ...59
5.2 Tectonic earthquakes, ...66
6. Conclusions, ...69
References, ...72