Characterizing polarized frequencies of tremor episodes at Copahue volcano (Southern Andes): A case study
The characterization of dominant frequencies is essential for tracking significant temporal variations during and between tremor episodes. In this work, we proposed a method for quantifying the dominant frequencies and their attributes. We applied it to characterize three tremor episodes recorded se...
Ausführliche Beschreibung
Autor*in: |
Melchor, Ivan [verfasserIn] Almendros, Javier [verfasserIn] Caselli, Alberto [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2022 |
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Übergeordnetes Werk: |
Enthalten in: Journal of South American earth sciences - Amsterdam [u.a.] : Elsevier Science, 1988, 118 |
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Übergeordnetes Werk: |
volume:118 |
DOI / URN: |
10.1016/j.jsames.2022.103961 |
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Katalog-ID: |
ELV008378061 |
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520 | |a The characterization of dominant frequencies is essential for tracking significant temporal variations during and between tremor episodes. In this work, we proposed a method for quantifying the dominant frequencies and their attributes. We applied it to characterize three tremor episodes recorded several hours before ash emissions at Copahue volcano during June–August 2020. The method consisted in (i) extracting dominant peaks (relative maximum in successive PSD) and their polarization attributes: polarization degree, rectilinearity, and polarization angles; and (ii) extracting dominant frequencies (i.e., relative maximums in the PDF of dominant peaks) and their polarization attributes. We applied the method at three stations located at 4.5, 9.5, and 11 km from the crater vent to investigate how the characteristics for dominant frequencies change among the stations. We found linearly polarized peaks in the three stations whose azimuth coincides with crater direction. The station closest to the crater (NAN5) recorded linearly polarized frequencies above 3.0 Hz. The time evolution of dominant peaks suggests that different sources compose the seismic tremor. Our results represent a forward step in the understanding of eruptive tremors of Copahue, being a clear example that their implementation at other volcanoes can improve the monitoring tasks. | ||
650 | 4 | |a Copahue volcano | |
650 | 4 | |a Volcanic tremor | |
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650 | 4 | |a Polarization analysis | |
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700 | 1 | |a Caselli, Alberto |e verfasserin |4 aut | |
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10.1016/j.jsames.2022.103961 doi (DE-627)ELV008378061 (ELSEVIER)S0895-9811(22)00249-8 DE-627 ger DE-627 rda eng 550 DE-600 38.00 bkl 38.70 bkl 38.55 bkl Melchor, Ivan verfasserin (orcid)0000-0003-0775-9039 aut Characterizing polarized frequencies of tremor episodes at Copahue volcano (Southern Andes): A case study 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The characterization of dominant frequencies is essential for tracking significant temporal variations during and between tremor episodes. In this work, we proposed a method for quantifying the dominant frequencies and their attributes. We applied it to characterize three tremor episodes recorded several hours before ash emissions at Copahue volcano during June–August 2020. The method consisted in (i) extracting dominant peaks (relative maximum in successive PSD) and their polarization attributes: polarization degree, rectilinearity, and polarization angles; and (ii) extracting dominant frequencies (i.e., relative maximums in the PDF of dominant peaks) and their polarization attributes. We applied the method at three stations located at 4.5, 9.5, and 11 km from the crater vent to investigate how the characteristics for dominant frequencies change among the stations. We found linearly polarized peaks in the three stations whose azimuth coincides with crater direction. The station closest to the crater (NAN5) recorded linearly polarized frequencies above 3.0 Hz. The time evolution of dominant peaks suggests that different sources compose the seismic tremor. Our results represent a forward step in the understanding of eruptive tremors of Copahue, being a clear example that their implementation at other volcanoes can improve the monitoring tasks. Copahue volcano Volcanic tremor Monitoring tool Polarization analysis Almendros, Javier verfasserin aut Caselli, Alberto verfasserin aut Enthalten in Journal of South American earth sciences Amsterdam [u.a.] : Elsevier Science, 1988 118 Online-Ressource (DE-627)303393106 (DE-600)1494875-8 (DE-576)09680646X 0895-9811 nnns volume:118 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4037 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4313 GBV_ILN_4326 GBV_ILN_4334 GBV_ILN_4338 38.00 Geowissenschaften: Allgemeines 38.70 Geophysik: Allgemeines 38.55 Regionale Geologie AR 118 |
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10.1016/j.jsames.2022.103961 doi (DE-627)ELV008378061 (ELSEVIER)S0895-9811(22)00249-8 DE-627 ger DE-627 rda eng 550 DE-600 38.00 bkl 38.70 bkl 38.55 bkl Melchor, Ivan verfasserin (orcid)0000-0003-0775-9039 aut Characterizing polarized frequencies of tremor episodes at Copahue volcano (Southern Andes): A case study 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The characterization of dominant frequencies is essential for tracking significant temporal variations during and between tremor episodes. In this work, we proposed a method for quantifying the dominant frequencies and their attributes. We applied it to characterize three tremor episodes recorded several hours before ash emissions at Copahue volcano during June–August 2020. The method consisted in (i) extracting dominant peaks (relative maximum in successive PSD) and their polarization attributes: polarization degree, rectilinearity, and polarization angles; and (ii) extracting dominant frequencies (i.e., relative maximums in the PDF of dominant peaks) and their polarization attributes. We applied the method at three stations located at 4.5, 9.5, and 11 km from the crater vent to investigate how the characteristics for dominant frequencies change among the stations. We found linearly polarized peaks in the three stations whose azimuth coincides with crater direction. The station closest to the crater (NAN5) recorded linearly polarized frequencies above 3.0 Hz. The time evolution of dominant peaks suggests that different sources compose the seismic tremor. Our results represent a forward step in the understanding of eruptive tremors of Copahue, being a clear example that their implementation at other volcanoes can improve the monitoring tasks. Copahue volcano Volcanic tremor Monitoring tool Polarization analysis Almendros, Javier verfasserin aut Caselli, Alberto verfasserin aut Enthalten in Journal of South American earth sciences Amsterdam [u.a.] : Elsevier Science, 1988 118 Online-Ressource (DE-627)303393106 (DE-600)1494875-8 (DE-576)09680646X 0895-9811 nnns volume:118 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4037 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4313 GBV_ILN_4326 GBV_ILN_4334 GBV_ILN_4338 38.00 Geowissenschaften: Allgemeines 38.70 Geophysik: Allgemeines 38.55 Regionale Geologie AR 118 |
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10.1016/j.jsames.2022.103961 doi (DE-627)ELV008378061 (ELSEVIER)S0895-9811(22)00249-8 DE-627 ger DE-627 rda eng 550 DE-600 38.00 bkl 38.70 bkl 38.55 bkl Melchor, Ivan verfasserin (orcid)0000-0003-0775-9039 aut Characterizing polarized frequencies of tremor episodes at Copahue volcano (Southern Andes): A case study 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The characterization of dominant frequencies is essential for tracking significant temporal variations during and between tremor episodes. In this work, we proposed a method for quantifying the dominant frequencies and their attributes. We applied it to characterize three tremor episodes recorded several hours before ash emissions at Copahue volcano during June–August 2020. The method consisted in (i) extracting dominant peaks (relative maximum in successive PSD) and their polarization attributes: polarization degree, rectilinearity, and polarization angles; and (ii) extracting dominant frequencies (i.e., relative maximums in the PDF of dominant peaks) and their polarization attributes. We applied the method at three stations located at 4.5, 9.5, and 11 km from the crater vent to investigate how the characteristics for dominant frequencies change among the stations. We found linearly polarized peaks in the three stations whose azimuth coincides with crater direction. The station closest to the crater (NAN5) recorded linearly polarized frequencies above 3.0 Hz. The time evolution of dominant peaks suggests that different sources compose the seismic tremor. Our results represent a forward step in the understanding of eruptive tremors of Copahue, being a clear example that their implementation at other volcanoes can improve the monitoring tasks. Copahue volcano Volcanic tremor Monitoring tool Polarization analysis Almendros, Javier verfasserin aut Caselli, Alberto verfasserin aut Enthalten in Journal of South American earth sciences Amsterdam [u.a.] : Elsevier Science, 1988 118 Online-Ressource (DE-627)303393106 (DE-600)1494875-8 (DE-576)09680646X 0895-9811 nnns volume:118 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4037 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4313 GBV_ILN_4326 GBV_ILN_4334 GBV_ILN_4338 38.00 Geowissenschaften: Allgemeines 38.70 Geophysik: Allgemeines 38.55 Regionale Geologie AR 118 |
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10.1016/j.jsames.2022.103961 doi (DE-627)ELV008378061 (ELSEVIER)S0895-9811(22)00249-8 DE-627 ger DE-627 rda eng 550 DE-600 38.00 bkl 38.70 bkl 38.55 bkl Melchor, Ivan verfasserin (orcid)0000-0003-0775-9039 aut Characterizing polarized frequencies of tremor episodes at Copahue volcano (Southern Andes): A case study 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The characterization of dominant frequencies is essential for tracking significant temporal variations during and between tremor episodes. In this work, we proposed a method for quantifying the dominant frequencies and their attributes. We applied it to characterize three tremor episodes recorded several hours before ash emissions at Copahue volcano during June–August 2020. The method consisted in (i) extracting dominant peaks (relative maximum in successive PSD) and their polarization attributes: polarization degree, rectilinearity, and polarization angles; and (ii) extracting dominant frequencies (i.e., relative maximums in the PDF of dominant peaks) and their polarization attributes. We applied the method at three stations located at 4.5, 9.5, and 11 km from the crater vent to investigate how the characteristics for dominant frequencies change among the stations. We found linearly polarized peaks in the three stations whose azimuth coincides with crater direction. The station closest to the crater (NAN5) recorded linearly polarized frequencies above 3.0 Hz. The time evolution of dominant peaks suggests that different sources compose the seismic tremor. Our results represent a forward step in the understanding of eruptive tremors of Copahue, being a clear example that their implementation at other volcanoes can improve the monitoring tasks. Copahue volcano Volcanic tremor Monitoring tool Polarization analysis Almendros, Javier verfasserin aut Caselli, Alberto verfasserin aut Enthalten in Journal of South American earth sciences Amsterdam [u.a.] : Elsevier Science, 1988 118 Online-Ressource (DE-627)303393106 (DE-600)1494875-8 (DE-576)09680646X 0895-9811 nnns volume:118 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4037 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4313 GBV_ILN_4326 GBV_ILN_4334 GBV_ILN_4338 38.00 Geowissenschaften: Allgemeines 38.70 Geophysik: Allgemeines 38.55 Regionale Geologie AR 118 |
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10.1016/j.jsames.2022.103961 doi (DE-627)ELV008378061 (ELSEVIER)S0895-9811(22)00249-8 DE-627 ger DE-627 rda eng 550 DE-600 38.00 bkl 38.70 bkl 38.55 bkl Melchor, Ivan verfasserin (orcid)0000-0003-0775-9039 aut Characterizing polarized frequencies of tremor episodes at Copahue volcano (Southern Andes): A case study 2022 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The characterization of dominant frequencies is essential for tracking significant temporal variations during and between tremor episodes. In this work, we proposed a method for quantifying the dominant frequencies and their attributes. We applied it to characterize three tremor episodes recorded several hours before ash emissions at Copahue volcano during June–August 2020. The method consisted in (i) extracting dominant peaks (relative maximum in successive PSD) and their polarization attributes: polarization degree, rectilinearity, and polarization angles; and (ii) extracting dominant frequencies (i.e., relative maximums in the PDF of dominant peaks) and their polarization attributes. We applied the method at three stations located at 4.5, 9.5, and 11 km from the crater vent to investigate how the characteristics for dominant frequencies change among the stations. We found linearly polarized peaks in the three stations whose azimuth coincides with crater direction. The station closest to the crater (NAN5) recorded linearly polarized frequencies above 3.0 Hz. The time evolution of dominant peaks suggests that different sources compose the seismic tremor. Our results represent a forward step in the understanding of eruptive tremors of Copahue, being a clear example that their implementation at other volcanoes can improve the monitoring tasks. Copahue volcano Volcanic tremor Monitoring tool Polarization analysis Almendros, Javier verfasserin aut Caselli, Alberto verfasserin aut Enthalten in Journal of South American earth sciences Amsterdam [u.a.] : Elsevier Science, 1988 118 Online-Ressource (DE-627)303393106 (DE-600)1494875-8 (DE-576)09680646X 0895-9811 nnns volume:118 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2034 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2064 GBV_ILN_2068 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2143 GBV_ILN_2153 GBV_ILN_2336 GBV_ILN_4037 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4313 GBV_ILN_4326 GBV_ILN_4334 GBV_ILN_4338 38.00 Geowissenschaften: Allgemeines 38.70 Geophysik: Allgemeines 38.55 Regionale Geologie AR 118 |
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Melchor, Ivan |
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characterizing polarized frequencies of tremor episodes at copahue volcano (southern andes): a case study |
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Characterizing polarized frequencies of tremor episodes at Copahue volcano (Southern Andes): A case study |
abstract |
The characterization of dominant frequencies is essential for tracking significant temporal variations during and between tremor episodes. In this work, we proposed a method for quantifying the dominant frequencies and their attributes. We applied it to characterize three tremor episodes recorded several hours before ash emissions at Copahue volcano during June–August 2020. The method consisted in (i) extracting dominant peaks (relative maximum in successive PSD) and their polarization attributes: polarization degree, rectilinearity, and polarization angles; and (ii) extracting dominant frequencies (i.e., relative maximums in the PDF of dominant peaks) and their polarization attributes. We applied the method at three stations located at 4.5, 9.5, and 11 km from the crater vent to investigate how the characteristics for dominant frequencies change among the stations. We found linearly polarized peaks in the three stations whose azimuth coincides with crater direction. The station closest to the crater (NAN5) recorded linearly polarized frequencies above 3.0 Hz. The time evolution of dominant peaks suggests that different sources compose the seismic tremor. Our results represent a forward step in the understanding of eruptive tremors of Copahue, being a clear example that their implementation at other volcanoes can improve the monitoring tasks. |
abstractGer |
The characterization of dominant frequencies is essential for tracking significant temporal variations during and between tremor episodes. In this work, we proposed a method for quantifying the dominant frequencies and their attributes. We applied it to characterize three tremor episodes recorded several hours before ash emissions at Copahue volcano during June–August 2020. The method consisted in (i) extracting dominant peaks (relative maximum in successive PSD) and their polarization attributes: polarization degree, rectilinearity, and polarization angles; and (ii) extracting dominant frequencies (i.e., relative maximums in the PDF of dominant peaks) and their polarization attributes. We applied the method at three stations located at 4.5, 9.5, and 11 km from the crater vent to investigate how the characteristics for dominant frequencies change among the stations. We found linearly polarized peaks in the three stations whose azimuth coincides with crater direction. The station closest to the crater (NAN5) recorded linearly polarized frequencies above 3.0 Hz. The time evolution of dominant peaks suggests that different sources compose the seismic tremor. Our results represent a forward step in the understanding of eruptive tremors of Copahue, being a clear example that their implementation at other volcanoes can improve the monitoring tasks. |
abstract_unstemmed |
The characterization of dominant frequencies is essential for tracking significant temporal variations during and between tremor episodes. In this work, we proposed a method for quantifying the dominant frequencies and their attributes. We applied it to characterize three tremor episodes recorded several hours before ash emissions at Copahue volcano during June–August 2020. The method consisted in (i) extracting dominant peaks (relative maximum in successive PSD) and their polarization attributes: polarization degree, rectilinearity, and polarization angles; and (ii) extracting dominant frequencies (i.e., relative maximums in the PDF of dominant peaks) and their polarization attributes. We applied the method at three stations located at 4.5, 9.5, and 11 km from the crater vent to investigate how the characteristics for dominant frequencies change among the stations. We found linearly polarized peaks in the three stations whose azimuth coincides with crater direction. The station closest to the crater (NAN5) recorded linearly polarized frequencies above 3.0 Hz. The time evolution of dominant peaks suggests that different sources compose the seismic tremor. Our results represent a forward step in the understanding of eruptive tremors of Copahue, being a clear example that their implementation at other volcanoes can improve the monitoring tasks. |
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score |
7.3982077 |