Classification of long-term very long period (VLP) volcanic earthquakes at Whakaari/White Island volcano, New Zealand
Abstract We have observed very long period earthquakes (VLPs) over the period 2007 to the end of 2019 at Whakaari/White Island volcano, New Zealand. The earthquakes exhibit similitude between waveforms which suggests repeating source locations and processes. VLPs recorded at two permanent stations w...
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doaj-34db6e80b1774d4ba4824ed1540506172020-11-25T04:04:44ZengSpringerOpenEarth, Planets and Space1880-59812020-07-0172111010.1186/s40623-020-01224-zClassification of long-term very long period (VLP) volcanic earthquakes at Whakaari/White Island volcano, New ZealandIseul Park0Arthur Jolly1Ivan Lokmer2Ben Kennedy3Department of Geological Sciences, University of CanterburyGNS ScienceSchool of Earth Sciences, University College DublinDepartment of Geological Sciences, University of CanterburyAbstract We have observed very long period earthquakes (VLPs) over the period 2007 to the end of 2019 at Whakaari/White Island volcano, New Zealand. The earthquakes exhibit similitude between waveforms which suggests repeating source locations and processes. VLPs recorded at two permanent stations were detected using waveform semblance and were then classified into two main families (F1 and F2) using a clustering analysis. The two families are characterized by ‘mirror image’ reverse waveform polarity suggesting that they are genetically related, but occur during different evolutionary phases of volcanic activity. F1 events occurred throughout the observation period, while F2 events mainly occurred as swarms that mark the onset of volcanic unrest. A detailed cluster analysis reveals possible sub-families implying slight temporal evolutions within a family. Our results add to our understanding of the volcanic magma–hydrothermal system at Whakaari/White Island indicating that relatively stable VLP sources may be exploited to improve monitoring for future unrest.http://link.springer.com/article/10.1186/s40623-020-01224-zVLPEarthquake familySwarmVolcanic unrestClustering analysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Iseul Park Arthur Jolly Ivan Lokmer Ben Kennedy |
spellingShingle |
Iseul Park Arthur Jolly Ivan Lokmer Ben Kennedy Classification of long-term very long period (VLP) volcanic earthquakes at Whakaari/White Island volcano, New Zealand Earth, Planets and Space VLP Earthquake family Swarm Volcanic unrest Clustering analysis |
author_facet |
Iseul Park Arthur Jolly Ivan Lokmer Ben Kennedy |
author_sort |
Iseul Park |
title |
Classification of long-term very long period (VLP) volcanic earthquakes at Whakaari/White Island volcano, New Zealand |
title_short |
Classification of long-term very long period (VLP) volcanic earthquakes at Whakaari/White Island volcano, New Zealand |
title_full |
Classification of long-term very long period (VLP) volcanic earthquakes at Whakaari/White Island volcano, New Zealand |
title_fullStr |
Classification of long-term very long period (VLP) volcanic earthquakes at Whakaari/White Island volcano, New Zealand |
title_full_unstemmed |
Classification of long-term very long period (VLP) volcanic earthquakes at Whakaari/White Island volcano, New Zealand |
title_sort |
classification of long-term very long period (vlp) volcanic earthquakes at whakaari/white island volcano, new zealand |
publisher |
SpringerOpen |
series |
Earth, Planets and Space |
issn |
1880-5981 |
publishDate |
2020-07-01 |
description |
Abstract We have observed very long period earthquakes (VLPs) over the period 2007 to the end of 2019 at Whakaari/White Island volcano, New Zealand. The earthquakes exhibit similitude between waveforms which suggests repeating source locations and processes. VLPs recorded at two permanent stations were detected using waveform semblance and were then classified into two main families (F1 and F2) using a clustering analysis. The two families are characterized by ‘mirror image’ reverse waveform polarity suggesting that they are genetically related, but occur during different evolutionary phases of volcanic activity. F1 events occurred throughout the observation period, while F2 events mainly occurred as swarms that mark the onset of volcanic unrest. A detailed cluster analysis reveals possible sub-families implying slight temporal evolutions within a family. Our results add to our understanding of the volcanic magma–hydrothermal system at Whakaari/White Island indicating that relatively stable VLP sources may be exploited to improve monitoring for future unrest. |
topic |
VLP Earthquake family Swarm Volcanic unrest Clustering analysis |
url |
http://link.springer.com/article/10.1186/s40623-020-01224-z |
work_keys_str_mv |
AT iseulpark classificationoflongtermverylongperiodvlpvolcanicearthquakesatwhakaariwhiteislandvolcanonewzealand AT arthurjolly classificationoflongtermverylongperiodvlpvolcanicearthquakesatwhakaariwhiteislandvolcanonewzealand AT ivanlokmer classificationoflongtermverylongperiodvlpvolcanicearthquakesatwhakaariwhiteislandvolcanonewzealand AT benkennedy classificationoflongtermverylongperiodvlpvolcanicearthquakesatwhakaariwhiteislandvolcanonewzealand |
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1724435458632450048 |