Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL095447 |
Volcanic origin of a long-lived swarm in the Central Bransfield Basin, Antarctica | |
P. Poli; L. Cabrera; M. C. Flores; J.C. Bá; ez; J.B. Ammirati; J. Vá; squez; S. Ruiz | |
2021-12-22 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Understanding the extensional processes in tectonic context at the transition from continental to oceanic spreading is fundamental to obtain new insights about formations of new oceans. To that scope, we study a large and long-lived earthquake swarm occurring in 2020-2021 in a back-arc rift (the Bransfield Basin) south of the South Shetland Islands, Antarctica. We make use of one local seismological station to detect more than 36000 small earthquakes, occurring from August 2020 to June 2021. Together with the occurrence of earthquakes, we observe a significant, geodetic deformation at a nearby GPS station. By joint interpretation of b-value, spatiotemporal evolution of seismicity and geodetic deformation, we infer a volcanic origin for this swarm that takes place close to the ridge axis. Our study suggests that beyond the 7mm/yr deformation reported at the Bransfield Basin ridge, transient deformation episodes localized at the ridge axial volcanic structure also modulate the extension. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/344173 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | P. Poli,L. Cabrera,M. C. Flores,et al. Volcanic origin of a long-lived swarm in the Central Bransfield Basin, Antarctica[J]. Geophysical Research Letters,2021. |
APA | P. Poli.,L. Cabrera.,M. C. Flores.,J.C. Bá.,ez.,...&S. Ruiz.(2021).Volcanic origin of a long-lived swarm in the Central Bransfield Basin, Antarctica.Geophysical Research Letters. |
MLA | P. Poli,et al."Volcanic origin of a long-lived swarm in the Central Bransfield Basin, Antarctica".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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