Wind speed as a dominant source of periodicities in reported emission rates of volcanic SO₂
Volcanoes have been found to display periodicities or cyclic trends in a wide range of phenomena. These include the eruptive activity itself, but also in the time series of geophysical and geochemical monitoring data such as volcanic degassing. Here, we test the existence of periodicities of volcani...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/168338 |
| _version_ | 1826113631126814720 |
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| author | Barrington, Charlotte Taisne, Benoit Costa, Fidel Arellano, Santiago |
| author2 | Asian School of the Environment |
| author_facet | Asian School of the Environment Barrington, Charlotte Taisne, Benoit Costa, Fidel Arellano, Santiago |
| author_sort | Barrington, Charlotte |
| collection | NTU |
| description | Volcanoes have been found to display periodicities or cyclic trends in a wide range of phenomena. These include the eruptive activity itself, but also in the time series of geophysical and geochemical monitoring data such as volcanic degassing. Here, we test the existence of periodicities of volcanic degassing at 32 volcanoes using the time series of sulfur dioxide (SO2) emission rates from data of the Network of Volcanic and Atmospheric Change (NOVAC). We use the Lomb-Scargle periodogram to analyze the SO2 data which allows efficient computation of a Fourier-like power spectrum from unevenly sampled data. We were able to calculate False-Alarm Probabilities in 28 of the 32 volcanoes, and we identified significant periodicities in the SO2 emission rates in 17 of the 28 volcanoes. However, we find that most of these periodicities are also present in the plume speeds used to determine SO2 emission rates. Periodicities at about 30–70, ∼120, and ∼180 days were identified at volcanoes located between 16°N and 16°S and are related to intraseasonality and interseasonality in global trade winds and not volcanic in origin. Periodicities between 30 and 70 days in both plume speed and SO2 emission rates are associated to the Madden-Julian Oscillation that is responsible for intraseasonal variability in the tropical atmosphere. Our study highlights the importance of using local wind data for deriving realistic SO2 emissions and the identification of short term periodicity in volcanic behavior. |
| first_indexed | 2024-10-01T03:26:23Z |
| format | Journal Article |
| id | ntu-10356/168338 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:26:23Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1683382023-05-29T15:30:40Z Wind speed as a dominant source of periodicities in reported emission rates of volcanic SO₂ Barrington, Charlotte Taisne, Benoit Costa, Fidel Arellano, Santiago Asian School of the Environment Earth Observatory of Singapore Science::Geology::Volcanoes and earthquakes Earth Tides Periodicities Volcanoes have been found to display periodicities or cyclic trends in a wide range of phenomena. These include the eruptive activity itself, but also in the time series of geophysical and geochemical monitoring data such as volcanic degassing. Here, we test the existence of periodicities of volcanic degassing at 32 volcanoes using the time series of sulfur dioxide (SO2) emission rates from data of the Network of Volcanic and Atmospheric Change (NOVAC). We use the Lomb-Scargle periodogram to analyze the SO2 data which allows efficient computation of a Fourier-like power spectrum from unevenly sampled data. We were able to calculate False-Alarm Probabilities in 28 of the 32 volcanoes, and we identified significant periodicities in the SO2 emission rates in 17 of the 28 volcanoes. However, we find that most of these periodicities are also present in the plume speeds used to determine SO2 emission rates. Periodicities at about 30–70, ∼120, and ∼180 days were identified at volcanoes located between 16°N and 16°S and are related to intraseasonality and interseasonality in global trade winds and not volcanic in origin. Periodicities between 30 and 70 days in both plume speed and SO2 emission rates are associated to the Madden-Julian Oscillation that is responsible for intraseasonal variability in the tropical atmosphere. Our study highlights the importance of using local wind data for deriving realistic SO2 emissions and the identification of short term periodicity in volcanic behavior. Ministry of Education (MOE) National Research Foundation (NRF) Published version This research was supported by the Earth Observatory of Singapore via its funding from the National Research Foundation Singapore and the Singapore Ministry of Education under the Research Centres of Excellence initiative. This work comprises EOS contribution number 464. 2023-05-26T04:55:52Z 2023-05-26T04:55:52Z 2022 Journal Article Barrington, C., Taisne, B., Costa, F. & Arellano, S. (2022). Wind speed as a dominant source of periodicities in reported emission rates of volcanic SO₂. Journal of Geophysical Research: Solid Earth, 127(12), e2022JB025380-. https://dx.doi.org/10.1029/2022JB025380 2169-9313 https://hdl.handle.net/10356/168338 10.1029/2022JB025380 12 127 e2022JB025380 en Journal of Geophysical Research: Solid Earth © 2022 The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. application/pdf |
| spellingShingle | Science::Geology::Volcanoes and earthquakes Earth Tides Periodicities Barrington, Charlotte Taisne, Benoit Costa, Fidel Arellano, Santiago Wind speed as a dominant source of periodicities in reported emission rates of volcanic SO₂ |
| title | Wind speed as a dominant source of periodicities in reported emission rates of volcanic SO₂ |
| title_full | Wind speed as a dominant source of periodicities in reported emission rates of volcanic SO₂ |
| title_fullStr | Wind speed as a dominant source of periodicities in reported emission rates of volcanic SO₂ |
| title_full_unstemmed | Wind speed as a dominant source of periodicities in reported emission rates of volcanic SO₂ |
| title_short | Wind speed as a dominant source of periodicities in reported emission rates of volcanic SO₂ |
| title_sort | wind speed as a dominant source of periodicities in reported emission rates of volcanic so₂ |
| topic | Science::Geology::Volcanoes and earthquakes Earth Tides Periodicities |
| url | https://hdl.handle.net/10356/168338 |
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