The Array Analyzing of The High Quality Glacial Seismic Events Active in Greenland Using Long-Period Surface  Rayleigh  Wave Detection by the German Regional Seismic Network

Mustafa TOKER

doi:https://doi.org/10.17350/HJSE19030000091

Makale detayları

The Array Analyzing of The High Quality Glacial Seismic Events Active in Greenland Using Long-Period Surface Rayleigh Wave Detection by the German Regional Seismic Network

Yazarlar:

Mustafa TOKER

Yayıncı:

Hitit University

Dergi:

Hittite Journal of Science and Engineering 2018 Vol.5 Issue 2, pp.165-173

Belge Tipi:

Makale

Yayın Tarihi:

6/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000451745

Sıklık:

Üç Aylık

eISSN:

2148-4171

DOI:

https://doi.org/10.17350/HJSE19030000091

Özet:

 

This study reports on four high quality glacial events in Greenland, M 4.9, 2007-07-  04; M 4.8, 2007-07-09; M 4.7, 2007-07-09; M 4.7, 2007-07-20 detected using the  long-period surface waves  Rayleigh wave  recorded at the stations of the German Regional  Seismic Network  GRSN  array  German-GR and Geofon-GE programs . The waveform  patterns of the detected slow events for Greenland updated through 2008 were monitored  to analyze this new class of low-frequency earthquakes in the context of the array processing technique and array parameters using the software Seismic Handler Motif  SHM .  The array geometry of GRSN was defined by seven stations and processed to associate  seismic phase arrivals to define glacial events. Two stations of GRSN were assigned the role  of reference sites. The long-period surface wave characteristics of the event signals with  magnitudes M 4.9, M 4.8, M 4.7, and M 4.7 were detected using filtering, beamforming,  and location-relocation steps; then, the results were updated using SHM. The event data  were filtered with a Butterworth band pass filter of 35s-70s with a common amplification.  Using the array-beamforming technique, the beam traces were computed to calculate the  beam-slowness  the apparent velocity  and the beam-azimuth of incoming wavefronts for  particular time intervals to further analyze the observed glacial events. Then, the detected  event signals were relocated and used to estimate array parameters; beam-slowness and  beam-azimuth. Finally, in this study, the array processing technique was used with array  parameters computed from the SHM to detect and analyze the slow glacial events using the  array installation data from GRSN.

Makale detayları

The Array Analyzing of The High Quality Glacial Seismic Events Active in Greenland Using Long-Period Surface Rayleigh Wave Detection by the German Regional Seismic Network

Yazarlar: Mustafa TOKER

Yayıncı: Hitit University

Dergi: Hittite Journal of Science and Engineering 2018 Vol.5 Issue 2, pp.165-173

Belge Tipi: Makale

Yayın Tarihi: 6/2018

Belge Dili: İngilizce

Document ID (Org No.): 2000451745

Sıklık: Üç Aylık

eISSN: 2148-4171

DOI: https://doi.org/10.17350/HJSE19030000091

Sayı

Yazarlar:

Mustafa TOKER

Yayıncı:

Hitit University

Dergi:

Hittite Journal of Science and Engineering 2018 Vol.5 Issue 2, pp.165-173

Belge Tipi:

Makale

Yayın Tarihi:

6/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000451745

Sıklık:

Üç Aylık

eISSN:

2148-4171

DOI:

https://doi.org/10.17350/HJSE19030000091