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- W3129432008 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> We collected drone data to quantify the kinematics at extensional fractures and normal faults, integrated this information with seismological data to reconstruct the stress field, and critically compared the results with previous fieldwork to assess the best practice. As a key site, we analyzed a sector of the northeast rift of Mt Etna, an area affected by continuous ground deformation linked to gravity sliding of the volcano's eastern flank and dike injections. The studied sector is characterized also by the existence of eruptive craters and fissures and lava flows. This work shows that this rift segment is affected by a series of NNE- to NE-striking, parallel extensional fractures characterized by an opening mode along an average N105.7<span class=inline-formula><sup>â</sup></span> vector. The stress field is characterized by a <span class=inline-formula><i>Ï</i><sub>Hmin</sub></span> trending northwestâsoutheast. Normal faults strike parallel to the extensional fractures. The extensional strain obtained by cumulating the net offset at extensional fractures with the fault heave gives a stretching ratio of 1.003 in the northeastern part of the study area and 1.005 in the southwestern part. Given a maximum age of 1614âCE for the offset lavas, we obtained an extension rate of 1.9âcmâyr<span class=inline-formula><sup>â1</sup></span> for the last 406Â years. This value is consistent with the slip along the Pernicana Fault system, confirming that the NE rift structures accommodate the sliding of the eastern flank of the volcano." @default.
- W3129432008 created "2021-03-01" @default.
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- W3129432008 date "2021-02-18" @default.
- W3129432008 modified "2023-09-27" @default.
- W3129432008 title "Comment on se-2020-211" @default.
- W3129432008 doi "https://doi.org/10.5194/se-2020-211-rc2" @default.
- W3129432008 hasPublicationYear "2021" @default.
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