Research output: Contribution to journal › Article › peer-review
Structure of the magma plumbing system beneath Semisopochnoi Island (Aleutian Arc) inferred from seismic tomography. / Yaroshenko, Galina; Koulakov, Ivan; Al-Arifi, Nassir et al.
In: Scientific Reports, Vol. 12, No. 1, 10771, 12.2022.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Structure of the magma plumbing system beneath Semisopochnoi Island (Aleutian Arc) inferred from seismic tomography
AU - Yaroshenko, Galina
AU - Koulakov, Ivan
AU - Al-Arifi, Nassir
AU - Qaysi, Saleh
AU - El Khrepy, Sami
N1 - Funding Information: We thank Jim Dixon from the Alaska Volcano Observatory, who provided us with the data for this study. The authors are grateful to the Deanship of Scientific Research, King Saud University for funding through Vice Deanship of Scientific Research Chairs. Derived products from this publication, including the P - and S -wave travel times and the full folder of the LOTOS code, that allow for the reproduction of all the results of this research are located in a file repository: Yaroshenko Galina and Koulakov Ivan (2022), “LOTOS code for local earthquake tomography with the Semisopochnoi dataset [Data set] and Scientific Reports.” Zenodo: http://doi.org/10.5281/zenodo.6203017. Publisher Copyright: © 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - Semisopochnoi Island is a remote and little-studied volcanic island in the western part of the Aleutian Arc. The existence of several active volcanic centers and a 5000–7000-year-old large caldera makes this island an important site for volcanic hazard assessment in the Northern Pacific. Based on local seismicity data recorded by six permanent seismic stations, we created the seismic tomography model, including the 3D distributions of Vp, Vs, and Vp/Vs ratios to a depth of 10 km. This model provides the first geophysical insight into the interior structure of Semisopochnoi Island and sheds light on the processes in the magma plumbing system beneath all volcanic centers on the island. At depths of 5–10 km, we observed a columnar-shaped high Vp/Vs-ratio anomaly below the caldera in the central part of the island, which likely represents the steady magma conduit. This conduit is headed by a prominent high Vp/Vs-ratio anomaly located 3–5 km directly below the caldera, which represents the magma reservoir feeding Cerberus and other Holocene-aged volcanic centers on Semisopochnoi Island.
AB - Semisopochnoi Island is a remote and little-studied volcanic island in the western part of the Aleutian Arc. The existence of several active volcanic centers and a 5000–7000-year-old large caldera makes this island an important site for volcanic hazard assessment in the Northern Pacific. Based on local seismicity data recorded by six permanent seismic stations, we created the seismic tomography model, including the 3D distributions of Vp, Vs, and Vp/Vs ratios to a depth of 10 km. This model provides the first geophysical insight into the interior structure of Semisopochnoi Island and sheds light on the processes in the magma plumbing system beneath all volcanic centers on the island. At depths of 5–10 km, we observed a columnar-shaped high Vp/Vs-ratio anomaly below the caldera in the central part of the island, which likely represents the steady magma conduit. This conduit is headed by a prominent high Vp/Vs-ratio anomaly located 3–5 km directly below the caldera, which represents the magma reservoir feeding Cerberus and other Holocene-aged volcanic centers on Semisopochnoi Island.
UR - http://www.scopus.com/inward/record.url?scp=85132850139&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/f8b0d8c6-8769-3b6e-ab5b-d7e35a33761a/
U2 - 10.1038/s41598-022-14794-7
DO - 10.1038/s41598-022-14794-7
M3 - Article
C2 - 35750786
AN - SCOPUS:85132850139
VL - 12
JO - Scientific Reports
JF - Scientific Reports
SN - 2045-2322
IS - 1
M1 - 10771
ER -
ID: 36542503