First DAS observations from the GeoLab fibre in Madeira, Portugal

Authors

  • Afonso Loureiro ARDITI - Agência Regional para o Desenvolvimento da Investigação, Tecnologia e Inovação, Funchal, Portugal / IDL - Instituto Dom Luiz, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal https://orcid.org/0000-0002-3762-586X
  • David Schlaphorst Universidade de Lisboa, Faculdade de Ciências, Instituto Dom Luiz, Lisboa, Portugal https://orcid.org/0000-0001-9959-7393
  • Luís Matias IDL - Instituto Dom Luiz, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal https://orcid.org/0000-0002-8086-4874
  • Andreia Pereira IDL - Instituto Dom Luiz, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal https://orcid.org/0000-0002-5368-5707
  • Carlos Corela IDL - Instituto Dom Luiz, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal https://orcid.org/0000-0002-0150-2286
  • Susana Gonçalves IDL - Instituto Dom Luiz, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
  • Rui Caldeira ARDITI - Agência Regional para o Desenvolvimento da Investigação, Tecnologia e Inovação, Funchal, Portugal https://orcid.org/0000-0001-8805-3016

DOI:

https://doi.org/10.26443/seismica.v4i2.1482

Keywords:

DAS, North Atlantic, Macaronesia, Distributed Acoustic Sensing, Oceanography, Seismology, Marine mammals, Ocean Soundscape, Madeira Island, Anthropogenic noise

Abstract

Distributed Acoustic Sensing allows extremely dense acquisition geometries of strain data. The GeoLab fibre, installed on the southern coast of Madeira Island, extends for ∼56 km and is exclusively dedicated to research. This fibre provides an invaluable resource for continuous data collection and analysis. Between October 26th and November 3rd , 2023, ∼7 TB of data were collected at 500 Hz with gauge length of 10.2 m at each 5.1 m. This report highlights the versatility of the GeoLab fibre and the present dataset for seismological, oceanographic, and biological research with a non-exhaustive collection of examples in various scientific domains, such as local and teleseismic events, calls from different species of baleen whales, waves and their interaction with the shoreline, ocean-bottom currents and temperatures, and anthropogenic noise sources.

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2025-12-13

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Loureiro, A., Schlaphorst, D., Matias, L., Pereira, A., Corela, C., Gonçalves, S., & Caldeira, R. (2025). First DAS observations from the GeoLab fibre in Madeira, Portugal. Seismica, 4(2). https://doi.org/10.26443/seismica.v4i2.1482

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