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
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-...
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ftdoajarticles:oai:doaj.org/article:aa0f79298dcd43fba5b6419591390bb5 2023-11-12T04:17:48+01:00 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 2018-06-01T00:00:00Z https://doi.org/10.17350/HJSE19030000091 https://doaj.org/article/aa0f79298dcd43fba5b6419591390bb5 EN eng Hitit University https://dergipark.org.tr/tr/download/article-file/1506742 https://doaj.org/toc/2148-4171 2148-4171 doi:10.17350/HJSE19030000091 https://doaj.org/article/aa0f79298dcd43fba5b6419591390bb5 Hittite Journal of Science and Engineering, Vol 5, Iss 2, Pp 165-173 (2018) greenland glacial events surface waves waveform patterns beamforming Engineering (General). Civil engineering (General) TA1-2040 article 2018 ftdoajarticles https://doi.org/10.17350/HJSE19030000091 2023-10-15T00:38:20Z 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. Article in Journal/Newspaper Greenland Directory of Open Access Journals: DOAJ Articles Butterworth ENVELOPE(66.733,66.733,-70.700,-70.700) Greenland Hittite Journal of Science & Engineering |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
greenland glacial events surface waves waveform patterns beamforming Engineering (General). Civil engineering (General) TA1-2040 |
spellingShingle |
greenland glacial events surface waves waveform patterns beamforming Engineering (General). Civil engineering (General) TA1-2040 Mustafa Toker 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 |
topic_facet |
greenland glacial events surface waves waveform patterns beamforming Engineering (General). Civil engineering (General) TA1-2040 |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Mustafa Toker |
author_facet |
Mustafa Toker |
author_sort |
Mustafa Toker |
title |
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 |
title_short |
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 |
title_full |
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 |
title_fullStr |
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 |
title_full_unstemmed |
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 |
title_sort |
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 |
publisher |
Hitit University |
publishDate |
2018 |
url |
https://doi.org/10.17350/HJSE19030000091 https://doaj.org/article/aa0f79298dcd43fba5b6419591390bb5 |
long_lat |
ENVELOPE(66.733,66.733,-70.700,-70.700) |
geographic |
Butterworth Greenland |
geographic_facet |
Butterworth Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Hittite Journal of Science and Engineering, Vol 5, Iss 2, Pp 165-173 (2018) |
op_relation |
https://dergipark.org.tr/tr/download/article-file/1506742 https://doaj.org/toc/2148-4171 2148-4171 doi:10.17350/HJSE19030000091 https://doaj.org/article/aa0f79298dcd43fba5b6419591390bb5 |
op_doi |
https://doi.org/10.17350/HJSE19030000091 |
container_title |
Hittite Journal of Science & Engineering |
_version_ |
1782334570844127232 |