Work

Melt, fluids, and fractures beneath Ebeko Volcano (Kuril Islands) revealed by ambient noise attenuation tomography

Year: 2026

Type: article

Abstract: The northern part of Paramushir Island (Kuril Arc) is dominated by the NNE-SSW oriented Vernadsky Ridge that hosts the presently active Ebeko Volcano, where phreatomagmatic eruptions coexist with complex hydrothermal activity. We apply ambient noise attenuation tomography (ANAT) to seismic data from a 21-station network, revealing three-dimensional attenuation structures. Key findings include: (1) Shallow high-attenuation anomalies ([Formula: see text] > 0.45 at 0.5–2 km depth) beneath Ebeko’s craters and Yuriev hot springs, mapping fracture-controlled fluid reservoirs; (2) A 4–6 km deep low-attenuation core ([Formula: see text] < 0.1) surrounded by high-attenuation zones, suggesting a magmatic storage region with radial fluid pathways; (3) A progressive north-to-south decrease in attenuation ([Formula: see text] > 0.45 to < 0.15) that mirrors the Vernadsky ridge’s volcanic evolution from extinct southern edifices to currently active Ebeko to the north. These results illuminate how seismic attenuation patterns track both active fluid pathways and volcanic system maturation in arc environments.

Source: Scientific Reports

DOI: 10.1038/s41598-026-43820-1

Authors: Iván Cabrera-Pérez, Viktoria Komzeleva, Yaroslav Berezhnev, Nadezhda Belovezhets, Ivan Koulakov

Institutions: University of Geneva, Novosibirsk State University, Institute of Petroleum Geology and Geophysics, Skolkovo Institute of Science and Technology

Language: English

Topic: Seismic Waves and Analysis

Subfield: Geophysics

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,690

Funders: European Commission, Ministry of Science and Higher Education of the Russian Federation, HORIZON EUROPE Framework Programme