Dynamics and Detection of Pulsed Tremor at Whakaari (White Island), Aotearoa New Zealand
Abstract Volcanic tremor is a crucial indicator for assessing the state and hazard potential of volcanic systems. At Whakaari (White Island volcano, Aotearoa New Zealand), a pulsed tremor signal emerged after a hydrothermal explosion in August 2012. The tremor accompanied the extrusion of a lava dom...
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| Format: | Article |
| Language: | English |
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Wiley
2024-10-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL110447 |
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| author | B. Steinke A. D. Jolly T. Girona C. Caudron L. A. Bramwell S. J. Cronin F. Illsley‐Kemp E. C. Hughes |
| author_facet | B. Steinke A. D. Jolly T. Girona C. Caudron L. A. Bramwell S. J. Cronin F. Illsley‐Kemp E. C. Hughes |
| author_sort | B. Steinke |
| collection | DOAJ |
| description | Abstract Volcanic tremor is a crucial indicator for assessing the state and hazard potential of volcanic systems. At Whakaari (White Island volcano, Aotearoa New Zealand), a pulsed tremor signal emerged after a hydrothermal explosion in August 2012. The tremor accompanied the extrusion of a lava dome, before gradually disappearing prior to the onset of renewed hydrothermal activity in January 2013. We interpret this seismic signal to represent discrete gas transfers from a magmatic intrusion toward a permeable cap—possibly a hydrothermal seal—in the upper layers of Whakaari's hydrothermal system. Such tremor may thus be associated with heightened potential for hazardous explosive activity but is difficult to detect using conventional seismic monitoring parameters. To highlight the emergence of subtle periodic signals, we experiment with Lomb‐Scargle periodograms (LS). LS detect the tremor 5 days before it becomes visible in seismograms, thus facilitating the recognition of such elusive seismic patterns. |
| format | Article |
| id | doaj-art-f7cec0d55cc14582a97618a116c88718 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-f7cec0d55cc14582a97618a116c887182024-11-11T10:10:52ZengWileyGeophysical Research Letters0094-82761944-80072024-10-015120n/an/a10.1029/2024GL110447Dynamics and Detection of Pulsed Tremor at Whakaari (White Island), Aotearoa New ZealandB. Steinke0A. D. Jolly1T. Girona2C. Caudron3L. A. Bramwell4S. J. Cronin5F. Illsley‐Kemp6E. C. Hughes7School of Environment Waipapa Taumata Rau University of Auckland Auckland New ZealandHawaiian Volcano Observatory U.S. Geological Survey Hilo HI USAGeophysical Institute University of Alaska Fairbanks Fairbanks AK USAWEL Research Institute Wavre BelgiumSchool of Geography Environment and Earth Sciences Te Herenga Waka Victoria University of Wellington Wellington New ZealandSchool of Environment Waipapa Taumata Rau University of Auckland Auckland New ZealandSchool of Geography Environment and Earth Sciences Te Herenga Waka Victoria University of Wellington Wellington New ZealandTe Pū Ao GNS Science National Isotope Centre/Avalon Lower Hutt New ZealandAbstract Volcanic tremor is a crucial indicator for assessing the state and hazard potential of volcanic systems. At Whakaari (White Island volcano, Aotearoa New Zealand), a pulsed tremor signal emerged after a hydrothermal explosion in August 2012. The tremor accompanied the extrusion of a lava dome, before gradually disappearing prior to the onset of renewed hydrothermal activity in January 2013. We interpret this seismic signal to represent discrete gas transfers from a magmatic intrusion toward a permeable cap—possibly a hydrothermal seal—in the upper layers of Whakaari's hydrothermal system. Such tremor may thus be associated with heightened potential for hazardous explosive activity but is difficult to detect using conventional seismic monitoring parameters. To highlight the emergence of subtle periodic signals, we experiment with Lomb‐Scargle periodograms (LS). LS detect the tremor 5 days before it becomes visible in seismograms, thus facilitating the recognition of such elusive seismic patterns.https://doi.org/10.1029/2024GL110447volcanic tremorWhakaari (White Island)periodicityhydrothermal system |
| spellingShingle | B. Steinke A. D. Jolly T. Girona C. Caudron L. A. Bramwell S. J. Cronin F. Illsley‐Kemp E. C. Hughes Dynamics and Detection of Pulsed Tremor at Whakaari (White Island), Aotearoa New Zealand Geophysical Research Letters volcanic tremor Whakaari (White Island) periodicity hydrothermal system |
| title | Dynamics and Detection of Pulsed Tremor at Whakaari (White Island), Aotearoa New Zealand |
| title_full | Dynamics and Detection of Pulsed Tremor at Whakaari (White Island), Aotearoa New Zealand |
| title_fullStr | Dynamics and Detection of Pulsed Tremor at Whakaari (White Island), Aotearoa New Zealand |
| title_full_unstemmed | Dynamics and Detection of Pulsed Tremor at Whakaari (White Island), Aotearoa New Zealand |
| title_short | Dynamics and Detection of Pulsed Tremor at Whakaari (White Island), Aotearoa New Zealand |
| title_sort | dynamics and detection of pulsed tremor at whakaari white island aotearoa new zealand |
| topic | volcanic tremor Whakaari (White Island) periodicity hydrothermal system |
| url | https://doi.org/10.1029/2024GL110447 |
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