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<p>The most recent eruptive cycle of Piton de la Fournaise (La Réunion Island) lasted from June 2014 to August 2023, during which 25 eruptions and 9 intrusions occurred, producing significant ground deformation. To more accurately quantify ground displacements, the <i>Observatoire volcanologique du Piton de la Fournaise</i> (OVPF) of the <i>Institut de physique du globe de Paris</i> (IPGP) operates a network of ground markers whose positions are measured periodically during dedicated Global Navigation Satellite System (GNSS) field campaigns. This network, in its current configuration, was installed in the early 2000s on the terminal cone—the most active and deformed part of the volcano—complementing the observatory’s permanent ground deformation network. This report presents data from 27 measurement campaigns conducted during the 2014–2023 eruptive cycle of the Piton de la Fournaise volcano. During this cycle, the terminal cone exhibited asymmetric east-west displacements, highlighting the preferential motion of the eastern flank. Maximum horizontal and vertical displacements of 2.56 ± 0.02&#xa0;m eastward (at mid-slope, east of the terminal cone) and 1.94 ± 0.05&#xa0;m upward (at the summit), respectively, were recorded. The data presented and provided in this paper open new research perspectives for long-term analyses of ground deformation at Piton de La Fournaise, including investigations into the instability of the eastern flank.</p>

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Ten years of GNSS field campaigns covering a full eruptive cycle at Piton de la Fournaise (2014–2023)

  • 期刊论文

  • 发表日期：

    2026年2月3日

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  • Aline Peltier,
  • Nicolas Villeneuve,
  • Patrice Boissier,
  • Christophe Brunet,
  • Kevin Canjamalé,
  • Philippe Catherine,
  • Magdalena Oryaëlle Chevrel,
  • Allan Derrien,
  • Andrea Di Muro,
  • Nicolas Desfete,
  • Zacharie Duputel,
  • Fabrice J. Fontaine,
  • Michel Frangieh,
  • Luciano Garavaglia,
  • Cyprien Griot,
  • Cyril Journeau,
  • Philippe Kowalski,
  • Cédric Laborde,
  • Frédéric Lauret,
  • Frédérick Pesqueira,
  • Nicole Richter,
  • Delphine Smittarello,
  • Arthur Vaitilingom

摘要

The most recent eruptive cycle of Piton de la Fournaise (La Réunion Island) lasted from June 2014 to August 2023, during which 25 eruptions and 9 intrusions occurred, producing significant ground deformation. To more accurately quantify ground displacements, the Observatoire volcanologique du Piton de la Fournaise (OVPF) of the Institut de physique du globe de Paris (IPGP) operates a network of ground markers whose positions are measured periodically during dedicated Global Navigation Satellite System (GNSS) field campaigns. This network, in its current configuration, was installed in the early 2000s on the terminal cone—the most active and deformed part of the volcano—complementing the observatory’s permanent ground deformation network. This report presents data from 27 measurement campaigns conducted during the 2014–2023 eruptive cycle of the Piton de la Fournaise volcano. During this cycle, the terminal cone exhibited asymmetric east-west displacements, highlighting the preferential motion of the eastern flank. Maximum horizontal and vertical displacements of 2.56 ± 0.02 m eastward (at mid-slope, east of the terminal cone) and 1.94 ± 0.05 m upward (at the summit), respectively, were recorded. The data presented and provided in this paper open new research perspectives for long-term analyses of ground deformation at Piton de La Fournaise, including investigations into the instability of the eastern flank.