Long-term seawater temperature records at Livingston and Deception Islands, Antarctica
This study investigates seawater temperature patterns on Livingston and Deception Islands in Antarctica, where LIVMAR and DECMAR oceanographic stations are located, respectively. The research spans the period from 2015 to 2024, focusing on seasonal variations, long-term trends, and differences betwe...
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Frontiers Media S.A.
2025-05-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2025.1566852/full |
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| author | Olga Luengo-S Olga Luengo-S Belén Rosado Vanessa Jiménez-Morales Amós de Gil Jesús Gómez-Enri Miguel Bruno Manuel Berrocoso Manuel Berrocoso |
| author_facet | Olga Luengo-S Olga Luengo-S Belén Rosado Vanessa Jiménez-Morales Amós de Gil Jesús Gómez-Enri Miguel Bruno Manuel Berrocoso Manuel Berrocoso |
| author_sort | Olga Luengo-S |
| collection | DOAJ |
| description | This study investigates seawater temperature patterns on Livingston and Deception Islands in Antarctica, where LIVMAR and DECMAR oceanographic stations are located, respectively. The research spans the period from 2015 to 2024, focusing on seasonal variations, long-term trends, and differences between the two stations. Seawater temperature data were analysed over a ten-year period, allowing for the examination of seasonal cycles, temperature extremes, and anomalies. Particular attention was paid to identifying influences from local geophysical features such as volcanic activity and glacial melt. Over these ten years, minimum temperatures have decreased, with DECMAR notably failing to record temperatures below the freezing point during the last two winters. The analysis reveals pronounced seasonality in both locations, with higher temperature peaks during the austral summer. DECMAR consistently registers higher maximum temperatures compared to LIVMAR, attributed to the volcanic activity of Deception Island. This volcanic influence introduces thermal anomalies, delays in minimum temperature occurrence, and greater variability in summer signals due to increased subsurface water flow within the volcanic plumbing system. During the austral winters, the stations exhibit distinct patterns. LIVMAR shows earlier and more variable temperature drops, while DECMAR demonstrates shorter but more stable freezing periods. These differences may result from freshwater input from the Johnson Glacier, which modifies local freezing conditions at Livingston Island, combined with the geothermal influence of Deception Island. The study identifies an overall upward trend in seawater and air temperatures, aligning with global and regional climate change patterns. The reduction in the frequency of extreme low temperature events that occurred between 2020 and 2022 during the volcano-tectonic event in the Bransfield Strait due to the eruption of the Orca volcano highlights the environmental changes affecting the South Shetland Islands region. This work underscores the importance of local geophysical processes, such as volcanic activity and glacier melt, in the regional thermal dynamics. While the similarities between LIVMAR and DECMAR reflect overarching climatic drivers, the observed differences illustrate the complexity introduced by local factors. |
| format | Article |
| id | doaj-art-a5b5742ee8704d27ba825f2e6c09ed5d |
| institution | OA Journals |
| issn | 2296-7745 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Marine Science |
| spelling | doaj-art-a5b5742ee8704d27ba825f2e6c09ed5d2025-08-20T01:51:53ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452025-05-011210.3389/fmars.2025.15668521566852Long-term seawater temperature records at Livingston and Deception Islands, AntarcticaOlga Luengo-S0Olga Luengo-S1Belén Rosado2Vanessa Jiménez-Morales3Amós de Gil4Jesús Gómez-Enri5Miguel Bruno6Manuel Berrocoso7Manuel Berrocoso8Department of Applied Physics, University of Cádiz, Centro Andaluz Superior de Estudios Marinos (CASEM), Puerto Real, SpainInstituto Universitario de Investigación Marina (INMAR), Puerto Real, SpainLaboratory of Astronomy, Geodesy and Cartography. Department of Mathematics, Sciences Faculty, University of Cádiz, Puerto Real, SpainDepartment of Theoretical and Kosmos Physics. University of Granada, Granada, SpainInstituto Universitario de Investigación Marina (INMAR), Puerto Real, SpainDepartment of Applied Physics, University of Cádiz, Centro Andaluz Superior de Estudios Marinos (CASEM), Puerto Real, SpainDepartment of Applied Physics, University of Cádiz, Centro Andaluz Superior de Estudios Marinos (CASEM), Puerto Real, SpainInstituto Universitario de Investigación Marina (INMAR), Puerto Real, SpainLaboratory of Astronomy, Geodesy and Cartography. Department of Mathematics, Sciences Faculty, University of Cádiz, Puerto Real, SpainThis study investigates seawater temperature patterns on Livingston and Deception Islands in Antarctica, where LIVMAR and DECMAR oceanographic stations are located, respectively. The research spans the period from 2015 to 2024, focusing on seasonal variations, long-term trends, and differences between the two stations. Seawater temperature data were analysed over a ten-year period, allowing for the examination of seasonal cycles, temperature extremes, and anomalies. Particular attention was paid to identifying influences from local geophysical features such as volcanic activity and glacial melt. Over these ten years, minimum temperatures have decreased, with DECMAR notably failing to record temperatures below the freezing point during the last two winters. The analysis reveals pronounced seasonality in both locations, with higher temperature peaks during the austral summer. DECMAR consistently registers higher maximum temperatures compared to LIVMAR, attributed to the volcanic activity of Deception Island. This volcanic influence introduces thermal anomalies, delays in minimum temperature occurrence, and greater variability in summer signals due to increased subsurface water flow within the volcanic plumbing system. During the austral winters, the stations exhibit distinct patterns. LIVMAR shows earlier and more variable temperature drops, while DECMAR demonstrates shorter but more stable freezing periods. These differences may result from freshwater input from the Johnson Glacier, which modifies local freezing conditions at Livingston Island, combined with the geothermal influence of Deception Island. The study identifies an overall upward trend in seawater and air temperatures, aligning with global and regional climate change patterns. The reduction in the frequency of extreme low temperature events that occurred between 2020 and 2022 during the volcano-tectonic event in the Bransfield Strait due to the eruption of the Orca volcano highlights the environmental changes affecting the South Shetland Islands region. This work underscores the importance of local geophysical processes, such as volcanic activity and glacier melt, in the regional thermal dynamics. While the similarities between LIVMAR and DECMAR reflect overarching climatic drivers, the observed differences illustrate the complexity introduced by local factors.https://www.frontiersin.org/articles/10.3389/fmars.2025.1566852/fullseawater temperaturetime seriesseasonal variation analysisSouth Shetland IslandsAntarcticaOrca seamount volcano |
| spellingShingle | Olga Luengo-S Olga Luengo-S Belén Rosado Vanessa Jiménez-Morales Amós de Gil Jesús Gómez-Enri Miguel Bruno Manuel Berrocoso Manuel Berrocoso Long-term seawater temperature records at Livingston and Deception Islands, Antarctica Frontiers in Marine Science seawater temperature time series seasonal variation analysis South Shetland Islands Antarctica Orca seamount volcano |
| title | Long-term seawater temperature records at Livingston and Deception Islands, Antarctica |
| title_full | Long-term seawater temperature records at Livingston and Deception Islands, Antarctica |
| title_fullStr | Long-term seawater temperature records at Livingston and Deception Islands, Antarctica |
| title_full_unstemmed | Long-term seawater temperature records at Livingston and Deception Islands, Antarctica |
| title_short | Long-term seawater temperature records at Livingston and Deception Islands, Antarctica |
| title_sort | long term seawater temperature records at livingston and deception islands antarctica |
| topic | seawater temperature time series seasonal variation analysis South Shetland Islands Antarctica Orca seamount volcano |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2025.1566852/full |
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