EARTHQUAKE SWARMS AS EVIDENCE OF VOLCANO-TECTONIC PROCESSES OF THE SLOWEST SPREADING GAKKEL RIDGE IN THE ARCTIC
Based on the data from the Arctic regional seismic stations, the article presents the results of studying the swarm seismicity of the Gakkel Mid-Ocean Ridge, located in the Arctic Ocean. The active spreading processes of ultraslow ridges with spreading rates of less than 20 mm/yr, which include the...
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Language: | Russian |
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Institute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch
2024
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Online Access: | https://www.gt-crust.ru/jour/article/view/1789 https://doi.org/10.5800/GT-2024-15-1-0737 |
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ftjgat:oai:oai.gtcrust.elpub.ru:article/1789 |
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openpolar |
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Open Polar |
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Geodynamics & Tectonophysics |
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ftjgat |
language |
Russian |
topic |
вулканотектонические процессы Gakkel Ridge low-magnitude earthquakes earthquake swarm volcano-tectonic processes хребет Гаккеля низкомагнитудные землетрясения рой землетрясений |
spellingShingle |
вулканотектонические процессы Gakkel Ridge low-magnitude earthquakes earthquake swarm volcano-tectonic processes хребет Гаккеля низкомагнитудные землетрясения рой землетрясений А. N. Morozov N. V. Vaganova Y. A. Mikhailova Е. R. Morozova I. V. Starkov А. Н. Морозов Н. В. Ваганова Я. А. Михайлова Е. Р. Морозова И. В. Старков EARTHQUAKE SWARMS AS EVIDENCE OF VOLCANO-TECTONIC PROCESSES OF THE SLOWEST SPREADING GAKKEL RIDGE IN THE ARCTIC |
topic_facet |
вулканотектонические процессы Gakkel Ridge low-magnitude earthquakes earthquake swarm volcano-tectonic processes хребет Гаккеля низкомагнитудные землетрясения рой землетрясений |
description |
Based on the data from the Arctic regional seismic stations, the article presents the results of studying the swarm seismicity of the Gakkel Mid-Ocean Ridge, located in the Arctic Ocean. The active spreading processes of ultraslow ridges with spreading rates of less than 20 mm/yr, which include the Gakkel Ridge, are still poorly understood as compared to the MOR in the Atlantic and Pacific oceans, with spreading rates of more than 25 mm/yr. In 2012–2022, there were identified eight swarms: one within the western volcanic segment of the ridge, others – in the eastern volcanic segment. No earthquake swarms were recorded in the central amagmatic segment of the ridge; the recording therein covers primarily single earthquakes and aftershock sequences. Spatially identified swarms are confied to some volcanic centers revealed earlier from the geological and geophysical data during complex expeditions. The ridge segment at coordinates ∼85…∼93° E is characterized by the most intense manifestations of volcanic processes. The spatial distribution of swarms may also indicate potential presence of volcanic structures that have not yet been identified from the geological, geophysical and geomorphological data. In the temporal domain, there can be preliminarily distinguished a 5-year swarm activation cycle, which, however, requires additional verification over a longer time interval. The swarm seismicity of the slowest spreading Gakkel Ridge cannot be described by a simple model of volcanism and magma intrusion into a symmetrical rift; it is rather a result of a complex interaction between diking and faulting with magma transport along the faults with potentially significant seismic activities. There can probably be suggested a regular combination of the processes of volcanic activation and seismotectonic destruction, which is especially pronounced in the locations of transverse faults. The results described in this article expand our understanding of the manifestation of volcano-tectonic processes occurring within the slowest ... |
author2 |
The study was supported by the Russian Science Foundation, project 22-27-00190, "Can low-magnitude earthquake swarms of the slowest spreading Gakkel Ridge in the Arctic be considered as an indicator of present-day magmatism and dike intrusions?". Исследования выполнены при финансовой поддержке РНФ, проект № 22-27-00190 «Рои низкомагнитудных землетрясений на ультрамедленном спрединговом хребте Гаккеля в Арктике – индикатор современного магматизма и внедрения даек?». |
format |
Article in Journal/Newspaper |
author |
А. N. Morozov N. V. Vaganova Y. A. Mikhailova Е. R. Morozova I. V. Starkov А. Н. Морозов Н. В. Ваганова Я. А. Михайлова Е. Р. Морозова И. В. Старков |
author_facet |
А. N. Morozov N. V. Vaganova Y. A. Mikhailova Е. R. Morozova I. V. Starkov А. Н. Морозов Н. В. Ваганова Я. А. Михайлова Е. Р. Морозова И. В. Старков |
author_sort |
А. N. Morozov |
title |
EARTHQUAKE SWARMS AS EVIDENCE OF VOLCANO-TECTONIC PROCESSES OF THE SLOWEST SPREADING GAKKEL RIDGE IN THE ARCTIC |
title_short |
EARTHQUAKE SWARMS AS EVIDENCE OF VOLCANO-TECTONIC PROCESSES OF THE SLOWEST SPREADING GAKKEL RIDGE IN THE ARCTIC |
title_full |
EARTHQUAKE SWARMS AS EVIDENCE OF VOLCANO-TECTONIC PROCESSES OF THE SLOWEST SPREADING GAKKEL RIDGE IN THE ARCTIC |
title_fullStr |
EARTHQUAKE SWARMS AS EVIDENCE OF VOLCANO-TECTONIC PROCESSES OF THE SLOWEST SPREADING GAKKEL RIDGE IN THE ARCTIC |
title_full_unstemmed |
EARTHQUAKE SWARMS AS EVIDENCE OF VOLCANO-TECTONIC PROCESSES OF THE SLOWEST SPREADING GAKKEL RIDGE IN THE ARCTIC |
title_sort |
earthquake swarms as evidence of volcano-tectonic processes of the slowest spreading gakkel ridge in the arctic |
publisher |
Institute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch |
publishDate |
2024 |
url |
https://www.gt-crust.ru/jour/article/view/1789 https://doi.org/10.5800/GT-2024-15-1-0737 |
long_lat |
ENVELOPE(90.000,90.000,87.000,87.000) |
geographic |
Arctic Arctic Ocean Gakkel Ridge Pacific |
geographic_facet |
Arctic Arctic Ocean Gakkel Ridge Pacific |
genre |
Arctic Arctic Arctic Ocean Polar Science Polar Science Reports on Polar and Marine Research |
genre_facet |
Arctic Arctic Arctic Ocean Polar Science Polar Science Reports on Polar and Marine Research |
op_source |
Geodynamics & Tectonophysics; Том 15, № 1 (2024); 0737 Геодинамика и тектонофизика; Том 15, № 1 (2024); 0737 2078-502X |
op_relation |
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ftjgat:oai:oai.gtcrust.elpub.ru:article/1789 2024-06-09T07:42:34+00:00 EARTHQUAKE SWARMS AS EVIDENCE OF VOLCANO-TECTONIC PROCESSES OF THE SLOWEST SPREADING GAKKEL RIDGE IN THE ARCTIC РОИ ЗЕМЛЕТРЯСЕНИЙ КАК СВИДЕТЕЛЬСТВО ВУЛКАНОТЕКТОНИЧЕСКИХ ПРОЦЕССОВ НА УЛЬТРАМЕДЛЕННОМ СПРЕДИНГОВОМ ХРЕБТЕ ГАККЕЛЯ В АРКТИКЕ А. N. Morozov N. V. Vaganova Y. A. Mikhailova Е. R. Morozova I. V. Starkov А. Н. Морозов Н. В. Ваганова Я. А. Михайлова Е. Р. Морозова И. В. Старков The study was supported by the Russian Science Foundation, project 22-27-00190, "Can low-magnitude earthquake swarms of the slowest spreading Gakkel Ridge in the Arctic be considered as an indicator of present-day magmatism and dike intrusions?". Исследования выполнены при финансовой поддержке РНФ, проект № 22-27-00190 «Рои низкомагнитудных землетрясений на ультрамедленном спрединговом хребте Гаккеля в Арктике – индикатор современного магматизма и внедрения даек?». 2024-02-16 application/pdf https://www.gt-crust.ru/jour/article/view/1789 https://doi.org/10.5800/GT-2024-15-1-0737 rus rus Institute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch https://www.gt-crust.ru/jour/article/view/1789/797 Agrawal R., Gehrke J., Gunopulos D., Raghavan P., 2005. Automatic Sub Space Clustering of High Dimensional Data. Data Mining Knowledge Discovery 11, 5–33. https://doi.org/10.1007/s10618-005-1396-1 Антоновская Г.Н., Конечная Я.В., Ваганова Н.В., Басакина И.М., Морозов А.Н., Шахова Е.В., Михайлова Я.А., Данилов К.Б. Вклад уникальной научной установки «Архангельская сейсмическая сеть» в изучение сейсмичности Российской Арктики // Геодинамика и тектонофизика. 2022. 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Geodynamics & Tectonophysics; Том 15, № 1 (2024); 0737 Геодинамика и тектонофизика; Том 15, № 1 (2024); 0737 2078-502X вулканотектонические процессы Gakkel Ridge low-magnitude earthquakes earthquake swarm volcano-tectonic processes хребет Гаккеля низкомагнитудные землетрясения рой землетрясений info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2024 ftjgat https://doi.org/10.5800/GT-2024-15-1-073710.1007/s10618-005-1396-110.5800/GT-2022-13-2-058710.1111/j.1365-246X.2008.03860.x10.1029/2002JB00183010.1111/j.1365-246X.1991.tb02512.x10.1111/j.1365-246X.2009.04491.x10.1038/nature0212810.1038/3505725810.1029/200 2024-05-15T23:47:45Z Based on the data from the Arctic regional seismic stations, the article presents the results of studying the swarm seismicity of the Gakkel Mid-Ocean Ridge, located in the Arctic Ocean. The active spreading processes of ultraslow ridges with spreading rates of less than 20 mm/yr, which include the Gakkel Ridge, are still poorly understood as compared to the MOR in the Atlantic and Pacific oceans, with spreading rates of more than 25 mm/yr. In 2012–2022, there were identified eight swarms: one within the western volcanic segment of the ridge, others – in the eastern volcanic segment. No earthquake swarms were recorded in the central amagmatic segment of the ridge; the recording therein covers primarily single earthquakes and aftershock sequences. Spatially identified swarms are confied to some volcanic centers revealed earlier from the geological and geophysical data during complex expeditions. The ridge segment at coordinates ∼85…∼93° E is characterized by the most intense manifestations of volcanic processes. The spatial distribution of swarms may also indicate potential presence of volcanic structures that have not yet been identified from the geological, geophysical and geomorphological data. In the temporal domain, there can be preliminarily distinguished a 5-year swarm activation cycle, which, however, requires additional verification over a longer time interval. The swarm seismicity of the slowest spreading Gakkel Ridge cannot be described by a simple model of volcanism and magma intrusion into a symmetrical rift; it is rather a result of a complex interaction between diking and faulting with magma transport along the faults with potentially significant seismic activities. There can probably be suggested a regular combination of the processes of volcanic activation and seismotectonic destruction, which is especially pronounced in the locations of transverse faults. The results described in this article expand our understanding of the manifestation of volcano-tectonic processes occurring within the slowest ... Article in Journal/Newspaper Arctic Arctic Arctic Ocean Polar Science Polar Science Reports on Polar and Marine Research Geodynamics & Tectonophysics Arctic Arctic Ocean Gakkel Ridge ENVELOPE(90.000,90.000,87.000,87.000) Pacific Oceanography |