Western Hellenic Subduction Zone: deep earthquake activity 2000 - 2017, plate interface geometry and thermal model
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| Main Authors: | , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2018
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| _version_ | 1867170473484222464 |
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| author | Halpaap, Felix Rondenay, Stéphane Perrin, Alexander Goes, Saskia Ottemöller, Lars Austrheim, Håkon Shaw, Robert Eeken, Thomas |
| author_facet | Halpaap, Felix Rondenay, Stéphane Perrin, Alexander Goes, Saskia Ottemöller, Lars Austrheim, Håkon Shaw, Robert Eeken, Thomas |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Subducting rocks release fluids as they plunge into Earth's mantle, and occasionally rupture to produce intraslab earthquakes. It is debated, however, whether fluids and earthquakes are directly related. By combining seismic observations and geodynamic models from western Greece, and comparing across other subduction zones, we find that earthquakes effectively track the flow of fluids from their slab source at >80 km depth to their sink at shallow (<40 km) depth. Between source and sink, the fluids flow updip under a sealed interface, facilitating intraslab earthquakes. In some locations, the seal breaks and fluids escape through vents into the mantle wedge, thereby reducing the fluid supply and seismicity updip in the slab. The vents themselves may represent nucleation sites for larger damaging earthquakes. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_894351 |
| institution | PANGAEA |
| language | en |
| publishDate | 2018 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Western Hellenic Subduction Zone: deep earthquake activity 2000 - 2017, plate interface geometry and thermal model Halpaap, Felix Rondenay, Stéphane Perrin, Alexander Goes, Saskia Ottemöller, Lars Austrheim, Håkon Shaw, Robert Eeken, Thomas Hellenic_Volcanic_Arc Subducting rocks release fluids as they plunge into Earth's mantle, and occasionally rupture to produce intraslab earthquakes. It is debated, however, whether fluids and earthquakes are directly related. By combining seismic observations and geodynamic models from western Greece, and comparing across other subduction zones, we find that earthquakes effectively track the flow of fluids from their slab source at >80 km depth to their sink at shallow (<40 km) depth. Between source and sink, the fluids flow updip under a sealed interface, facilitating intraslab earthquakes. In some locations, the seal breaks and fluids escape through vents into the mantle wedge, thereby reducing the fluid supply and seismicity updip in the slab. The vents themselves may represent nucleation sites for larger damaging earthquakes. |
| title | Western Hellenic Subduction Zone: deep earthquake activity 2000 - 2017, plate interface geometry and thermal model |
| topic | Hellenic_Volcanic_Arc |
| url | https://doi.org/10.1594/PANGAEA.894351 |