OHA-SIS-BIO - OBSERVATOIRE HYDROACOUSTIQUE

Type Set of cruises
Chief scientist(s) ROYER Jean-Yves ORCID
Project manager ROYER Jean-Yves ORCID
DOI 10.18142/229
Objective

OHA-SIS-BIO - Observatory of HydroAcousticity from SISmicity and Biodiversity in the Indian Ocean - is a long-term hydroacoustic program for monitoring the seismic activity and the vocal activity of large marine mammals in the southern Indian Ocean. A network of autonomous hydrophones moored in the SOFAR channel axis (9 moorings) has been deployed and yearly maintained from 2010 to early 2023, between La Réunion, Crozet, Kerguelen and Amsterdam islands, taking advantage of the yearly journeys of R/V Marion Dufresne to these southern islands.

The hydrophone array was designed to continuously monitor the earthquake activity associated with 3 contrasted spreading ridges (16 to 70 mm/yr) and with the intraplate deformation in the southern Central Indian Basin. This approach is very effective for detecting and locating low-magnitude (>3) earthquakes, which are not recorded by land-based seismological networks, and for deciphering magmatic from tectonic events. The objectives were to characterize the seismic climate of mid-oceanic ridges with ultra-slow, slow and intermediate spreading rates, and the temporal and spatial distribution of the intraplate deformation.

This observatory was also designed to monitor the vocal activity of large baleen whales. Passive acoustics are indeed a very effective tool for monitoring the presence of these acoustically very active marine mammals.  At least 5 populations of blue whales were detected by our network. The aim was to improve knowledge of the presence, abundance and seasonal migrations of these endangered large marine mammals, over several annual cycles in the Southern Indian Ocean.

These data also displayed unexpected information on the sea-state and icebergs (calving, collision, dislocation). These two applications also require long time-series to validate sea-state prediction models or to monitor the evolution of the oceanic ambient noise (natural or man-made).

Common to all these objectives is the need for hydroacoustic recordings at low frequencies (< 120 Hz) and continuous time series as long as possible to be representative of the seismic regime of spreading ridges, whale activity or changes in ambient noise, in these remote and inaccessible parts of the world ocean.

This program was supported by the French Oceanographic Fleet, the CNRS (INSU), the University of Brest, and the Regional Council of Brittany.

Fin whale and tabular iceberg off the southern Kerguelen Plateau (taken in January 2010 by 58°S from R/V Marion Dufresne). Bathymetric chart of the Indian Ocean with the OHASISBIO network of autonomous hydrophones (circles) and the permanent hydroacoustic stations of the IMS-CTBTO (stars).

Published data

Ingale, Vaibhav Vijay, Bazin, Sara, Royer, Jean-Yves (2025). Hydroacoustic catalogs along the Southeast Indian Ridge. https://doi.org/10.5281/zenodo.14834192


Ingale Vaibhav Vijay, Bazin Sara, Royer Jean-Yves (2024). Hydroacoustic catalogs along the Southwest Indian Ridge between 2016 and 2018. https://doi.org/10.17882/101039


Bibliography

Publications

Branch Trevor A., Monnahan Cole C., Leroy Emmanuelle C., Shabangu Fannie W., Širović Ana, Cerchio Salvatore, Al Harthi Suaad, Allison Cherry, Cabrera Naysa Balcázar, Barlow Dawn R., Calderan Susannah V., Double Michael C., Dréo Richard, Gavrilov Alexander N., Gedamke Jason, Hodge Kristin B., Jenner K. Curt S., Jenner Micheline N.‐m., Kiszka Jeremy J., Letsheleha Ishmail S., McCauley Robert D., Miksis‐olds Jennifer L., Miller Brian S., Panicker Divya, Pierpoint Chris, Rand Zoe R., Reeve Kym, Rogers Tracey, Royer Jean‐yves, Samaran Flore, Stafford Kathleen M., Thomisch Karolin, Torres Leigh G., Torterotot Maëlle, Tripovich Joy S., Warren Victoria E., Willson Andrew, Willson Maïa S.. Separating Historical Catches Among Pygmy Blue Whale Populations Using Recent Song Detections. Marine Mammal Science IN PRESS. https://doi.org/10.1111/mms.70003


Michel Mathilde, Torterotot Maëlle, Royer Jean-Yves, Samaran Flore (2024). Effects of duty cycle on passive acoustic monitoring metrics: The case of blue whale songs. Journal Of The Acoustical Society Of America, 155(4), 2538-2548. Publisher's official version : https://doi.org/10.1121/10.0025545 , Open Access version : https://archimer.ifremer.fr/doc/00886/99790/


Raumer Pierre-Yves, Bazin Sara, Cazau Dorian, Ingale Vaibhav Vijay, Royer Jean-Yves, Lavayssière Aude (2024). An Open Source Hydroacoustic Benchmarking Framework for Geophonic Signal Detection. Seismica, 3(2), 15p. Publisher's official version : https://doi.org/10.26443/seismica.v3i2.1344 , Open Access version : https://archimer.ifremer.fr/doc/00915/102660/


Torterotot Maëlle, Samaran Flore, Royer Jean-Yves (2023). Long-term acoustic monitoring of nonstereotyped blue whale calls in the southern Indian Ocean. Marine Mammal Science, 39(2), 594-610. Publisher's official version : https://doi.org/10.1111/mms.12998 , Open Access version : https://archimer.ifremer.fr/doc/00819/93080/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Vijay Ingale Vaibhav, Bazin Sara, Olive Jean-Arthur, Briais Anne, Royer Jean-Yves (2023). Hydroacoustic Study of a Seismic Swarm in 2016–2017 near the Melville Transform Fault on the Southwest Indian Ridge. Bulletin Of The Seismological Society Of America, 113(4), 1523-1541. Publisher's official version : https://doi.org/10.1785/0120220213 , Open Access version : https://archimer.ifremer.fr/doc/00836/94784/


Lecoulant Jean, Guennou Claude, Guillon Laurent, Royer Jean-Yves (2022). Numerical modeling and observations of seismo-acoustic waves propagating as modes in a fluid-solid waveguide. Journal Of The Acoustical Society Of America, 151(5), 3437-3447. Publisher's official version : https://doi.org/10.1121/10.0010529 , Open Access version : https://archimer.ifremer.fr/doc/00865/97705/


Leroy Emmanuelle, Royer Jean-Yves, Alling Abigail, Maslen Ben, Rogers Tracey L. (2021). Multiple pygmy blue whale acoustic populations in the Indian Ocean: whale song identifies a possible new population. Scientific Reports, 11(1), 8762 (21p.). Publisher's official version : https://doi.org/10.1038/s41598-021-88062-5 , Open Access version : https://archimer.ifremer.fr/doc/00691/80280/


Zhong Ming, Torterotot Maelle, Branch Trevor A., Stafford Kathleen M., Royer Jean-Yves, Dodhia Rahul, Lavista Ferres Juan (2021). Detecting, classifying, and counting blue whale calls with Siamese neural networks. Journal Of The Acoustical Society Of America, 149(5), 3086-3094. Publisher's official version : https://doi.org/10.1121/10.0004828 , Open Access version : https://archimer.ifremer.fr/doc/00693/80505/


Sukhovich Alexey, Perrot Julie, Royer Jean-Yves (2021). Using Teleseismic P-Wave Arrivals to Calibrate the Clock Drift of Autonomous Underwater Hydrophones. Bulletin Of The Seismological Society Of America, 111(1), 21-35. Publisher's official version : https://doi.org/10.1785/0120200217 , Open Access version : https://archimer.ifremer.fr/doc/00656/76809/


Ingale Vaibhav Vijay, Bazin Sara, Royer Jean-Yves (2021). Hydroacoustic Observations of Two Contrasted Seismic Swarms along the Southwest Indian Ridge in 2018. Geosciences, 11(6), 225 (18p.). Publisher's official version : https://doi.org/10.3390/geosciences11060225 , Open Access version : https://archimer.ifremer.fr/doc/00820/93152/


Torterotot Maëlle, Samaran Flore, Stafford Kathleen M., Royer Jean-Yves (2020). Distribution of blue whale populations in the southern Indian Ocean based on a decade of acoustic monitoring. Deep-sea Research Part Ii-topical Studies In Oceanography, 179, 104874 (16p.). Publisher's official version : https://doi.org/10.1016/j.dsr2.2020.104874 , Open Access version : https://archimer.ifremer.fr/doc/00649/76111/


Samaran Flore, Berne Adrien, Leroy Emmanuelle C, Moreira Sérgio, Stafford Kathleen M., Maia Marcia, Royer Jean-Yves (2019). Antarctic blue whales ( Balaenoptera musculus intermedia ) recorded at the Equator in the Atlantic Ocean. Marine Mammal Science, 35(2), 641-648. Publisher's official version : https://doi.org/10.1111/mms.12559 , Open Access version : https://archimer.ifremer.fr/doc/00484/59613/


Lecoulant Jean, Guennou Claude, Guillon Laurent, Royer Jean-Yves (2019). Three-dimensional modeling of earthquake generated acoustic waves in the ocean in simplified configurations. Journal Of The Acoustical Society Of America, 146(3), 2113-2123. Publisher's official version : https://doi.org/10.1121/1.5126009 , Open Access version : https://archimer.ifremer.fr/doc/00637/74914/


Torterotot Maelle, Royer Jean-Yves, Samaran Flore (2019). Detection strategy for long-term acoustic monitoring of blue whale stereotyped and non-stereotyped calls in the Southern Indian Ocean. OCEANS 2019 - Marseille (IEEE).

Lecoulant Jean, Guennou Claude, Guillon Laurent, Royer Jean-Yves (2019). Modal propagation of ocean acoustic waves generated by earthquakes. OCEANS 2019 - Marseille (IEEE).

Leroy Emmanuelle C, Royer Jean-Yves, Bonnel Julien, Samaran Flore (2018). Long-Term and Seasonal Changes of Large Whale Call Frequency in the Southern Indian Ocean. Journal Of Geophysical Research-oceans, 123(11), 8568-8580. Publisher's official version : https://doi.org/10.1029/2018JC014352 , Open Access version : https://archimer.ifremer.fr/doc/00516/62730/


Leroy Emmanuelle C., Samaran Flore, Stafford Kathleen M., Bonnel Julien, Royer Jean-Yves (2018). Broad-scale study of the seasonal and geographic occurrence of blue and fin whales in the Southern Indian Ocean. Endangered Species Research, 37, 289-300. Publisher's official version : https://doi.org/10.3354/esr00927 , Open Access version : https://archimer.ifremer.fr/doc/00516/62731/


Leroy Emmanuelle C., Thomisch Karolin, Royer Jean-Yves, Boebel Olaf, Van Opzeeland Ilse (2018). On the reliability of acoustic annotations and automatic detections of Antarctic blue whale calls under different acoustic conditions. Journal Of The Acoustical Society Of America, 144(2), 740-754. https://doi.org/10.1121/1.5049803


Leroy Emmanuelle C, Royer Jean-Yves, Bonnel Julien, Samaran Flore (2018). Long-Term and Seasonal Changes of Large Whale Call Frequency in the Southern Indian Ocean. Journal Of Geophysical Research-oceans, 123(11), 8568-8580. Publisher's official version : https://doi.org/10.1029/2018JC014352 , Open Access version : https://archimer.ifremer.fr/doc/00516/62730/


Leroy Emmanuelle, Samaran Flore, Bonnel Julien, Royer Jean-Yves (2017). Identification of two potential whale calls in the southern Indian Ocean, and their geographic and seasonal occurrence. Journal Of The Acoustical Society Of America, 142(3), 1413-1427. https://doi.org/10.1121/1.5001056


Leroy Emmanuelle, Samaran Flore, Bonnel Julien, Royer Jean-Yves (2017). Identification of two potential whale calls in the southern Indian Ocean, and their geographic and seasonal occurrence. Journal Of The Acoustical Society Of America, 142(3), 1413-1427. https://doi.org/10.1121/1.5001056


Leroy Emmanuelle, Samaran Flore, Bonnel Julien, Royer Jean-Yves (2017). Identification of two potential whale calls in the southern Indian Ocean, and their geographic and seasonal occurrence. Journal Of The Acoustical Society Of America, 142(3), 1413-1427. https://doi.org/10.1121/1.5001056


Leroy Emmanuelle, Samaran Flore, Bonnel Julien, Royer Jean-Yves (2017). Identification of two potential whale calls in the southern Indian Ocean, and their geographic and seasonal occurrence. Journal Of The Acoustical Society Of America, 142(3), 1413-1427. https://doi.org/10.1121/1.5001056


Leroy Emmanuelle, Samaran Flore, Bonnel Julien, Royer Jean-Yves (2017). Identification of two potential whale calls in the southern Indian Ocean, and their geographic and seasonal occurrence. Journal Of The Acoustical Society Of America, 142(3), 1413-1427. https://doi.org/10.1121/1.5001056


Leroy Emmanuelle, Samaran Flore, Bonnel Julien, Royer Jean-Yves (2017). Identification of two potential whale calls in the southern Indian Ocean, and their geographic and seasonal occurrence. Journal Of The Acoustical Society Of America, 142(3), 1413-1427. https://doi.org/10.1121/1.5001056


Leroy Emmanuelle, Samaran Flore, Bonnel Julien, Royer Jean-Yves (2017). Identification of two potential whale calls in the southern Indian Ocean, and their geographic and seasonal occurrence. Journal Of The Acoustical Society Of America, 142(3), 1413-1427. https://doi.org/10.1121/1.5001056


Leroy Emmanuelle, Samaran Flore, Bonnel Julien, Royer Jean-Yves (2017). Identification of two potential whale calls in the southern Indian Ocean, and their geographic and seasonal occurrence. Journal Of The Acoustical Society Of America, 142(3), 1413-1427. https://doi.org/10.1121/1.5001056


Tsang-Hin-Sun Eve, Royer Jean-Yves, Perrot Julie (2016). Seismicity and active accretion processes at the ultraslow-spreading Southwest and intermediate-spreading Southeast Indian ridges from hydroacoustic data. Geophysical Journal International, 206(2), 1232-1245. Publisher's official version : https://doi.org/10.1093/gji/ggw201 , Open Access version : https://archimer.ifremer.fr/doc/00340/45165/


Leroy Emmanuelle C., Samaran Flore, Bonnel Julien, Royer Jean-Yves (2016). Seasonal and Diel Vocalization Patterns of Antarctic Blue Whale (Balaenoptera musculus intermedia) in the Southern Indian Ocean: A Multi-Year and Multi-Site Study. Plos One, 11(11), e0163587. Publisher's official version : https://doi.org/10.1371/journal.pone.0163587 , Open Access version : https://archimer.ifremer.fr/doc/00357/46828/


Leroy Emmanuelle C., Samaran Flore, Bonnel Julien, Royer Jean-Yves (2016). Seasonal and Diel Vocalization Patterns of Antarctic Blue Whale (Balaenoptera musculus intermedia) in the Southern Indian Ocean: A Multi-Year and Multi-Site Study. Plos One, 11(11), e0163587. Publisher's official version : https://doi.org/10.1371/journal.pone.0163587 , Open Access version : https://archimer.ifremer.fr/doc/00357/46828/


Leroy Emmanuelle C., Samaran Flore, Bonnel Julien, Royer Jean-Yves (2016). Seasonal and Diel Vocalization Patterns of Antarctic Blue Whale (Balaenoptera musculus intermedia) in the Southern Indian Ocean: A Multi-Year and Multi-Site Study. Plos One, 11(11), e0163587. Publisher's official version : https://doi.org/10.1371/journal.pone.0163587 , Open Access version : https://archimer.ifremer.fr/doc/00357/46828/


Leroy Emmanuelle C., Samaran Flore, Bonnel Julien, Royer Jean-Yves (2016). Seasonal and Diel Vocalization Patterns of Antarctic Blue Whale (Balaenoptera musculus intermedia) in the Southern Indian Ocean: A Multi-Year and Multi-Site Study. Plos One, 11(11), e0163587. Publisher's official version : https://doi.org/10.1371/journal.pone.0163587 , Open Access version : https://archimer.ifremer.fr/doc/00357/46828/


Leroy Emmanuelle C., Samaran Flore, Bonnel Julien, Royer Jean-Yves (2016). Seasonal and Diel Vocalization Patterns of Antarctic Blue Whale (Balaenoptera musculus intermedia) in the Southern Indian Ocean: A Multi-Year and Multi-Site Study. Plos One, 11(11), e0163587. Publisher's official version : https://doi.org/10.1371/journal.pone.0163587 , Open Access version : https://archimer.ifremer.fr/doc/00357/46828/


Leroy Emmanuelle C., Samaran Flore, Bonnel Julien, Royer Jean-Yves (2016). Seasonal and Diel Vocalization Patterns of Antarctic Blue Whale (Balaenoptera musculus intermedia) in the Southern Indian Ocean: A Multi-Year and Multi-Site Study. Plos One, 11(11), e0163587. Publisher's official version : https://doi.org/10.1371/journal.pone.0163587 , Open Access version : https://archimer.ifremer.fr/doc/00357/46828/


Leroy Emmanuelle C., Samaran Flore, Bonnel Julien, Royer Jean-Yves (2016). Seasonal and Diel Vocalization Patterns of Antarctic Blue Whale (Balaenoptera musculus intermedia) in the Southern Indian Ocean: A Multi-Year and Multi-Site Study. Plos One, 11(11), e0163587. Publisher's official version : https://doi.org/10.1371/journal.pone.0163587 , Open Access version : https://archimer.ifremer.fr/doc/00357/46828/


Socheleau Francois-Xavier, Leroy Emmanuelle, Pecci Andres Carvallo, Samaran Flore, Bonnel Julien, Royer Jean-Yves (2015). Automated detection of Antarctic blue whale calls. Journal Of The Acoustical Society Of America, 138(5), 3105-3117. https://doi.org/10.1121/1.4934271


Tsang-Hin-Sun Eve, Royer Jean-Yves, Leroy Emmanuelle C. (2015). Low-frequency sound level in the Southern Indian Ocean. Journal Of The Acoustical Society Of America, 138(6), 3439-3446. https://doi.org/10.1121/1.4936855


Tsang-Hin-Sun Eve, Royer Jean-Yves, Leroy Emmanuelle C. (2015). Low-frequency sound level in the Southern Indian Ocean. Journal Of The Acoustical Society Of America, 138(6), 3439-3446. https://doi.org/10.1121/1.4936855


Tsang-Hin-Sun Eve, Royer Jean-Yves, Leroy Emmanuelle C. (2015). Low-frequency sound level in the Southern Indian Ocean. Journal Of The Acoustical Society Of America, 138(6), 3439-3446. https://doi.org/10.1121/1.4936855


Ardhuin FabriceORCID, Lavanant Thibaut, Obrebski Mathias, Marie Louis, Royer Jean-Yves, D'Eu Jean-Francois, Howe Bruce M., Lukas Roger, Aucan Jerome (2013). A numerical model for ocean ultra-low frequency noise: Wave-generated acoustic-gravity and Rayleigh modes. Journal Of The Acoustical Society Of America, 134(4), 3242-3259. Publisher's official version : https://doi.org/10.1121/1.4818840 , Open Access version : https://archimer.ifremer.fr/doc/00176/28748/


Ardhuin FabriceORCID, Lavanant Thibaut, Obrebski Mathias, Marie Louis, Royer Jean-Yves, D'Eu Jean-Francois, Howe Bruce M., Lukas Roger, Aucan Jerome (2013). A numerical model for ocean ultra-low frequency noise: Wave-generated acoustic-gravity and Rayleigh modes. Journal Of The Acoustical Society Of America, 134(4), 3242-3259. Publisher's official version : https://doi.org/10.1121/1.4818840 , Open Access version : https://archimer.ifremer.fr/doc/00176/28748/


Ardhuin FabriceORCID, Lavanant Thibaut, Obrebski Mathias, Marie Louis, Royer Jean-Yves, D'Eu Jean-Francois, Howe Bruce M., Lukas Roger, Aucan Jerome (2013). A numerical model for ocean ultra-low frequency noise: Wave-generated acoustic-gravity and Rayleigh modes. Journal Of The Acoustical Society Of America, 134(4), 3242-3259. Publisher's official version : https://doi.org/10.1121/1.4818840 , Open Access version : https://archimer.ifremer.fr/doc/00176/28748/


Ardhuin FabriceORCID, Lavanant Thibaut, Obrebski Mathias, Marie Louis, Royer Jean-Yves, D'Eu Jean-Francois, Howe Bruce M., Lukas Roger, Aucan Jerome (2013). A numerical model for ocean ultra-low frequency noise: Wave-generated acoustic-gravity and Rayleigh modes. Journal Of The Acoustical Society Of America, 134(4), 3242-3259. Publisher's official version : https://doi.org/10.1121/1.4818840 , Open Access version : https://archimer.ifremer.fr/doc/00176/28748/


Ardhuin FabriceORCID, Lavanant Thibaut, Obrebski Mathias, Marie Louis, Royer Jean-Yves, D'Eu Jean-Francois, Howe Bruce M., Lukas Roger, Aucan Jerome (2013). A numerical model for ocean ultra-low frequency noise: Wave-generated acoustic-gravity and Rayleigh modes. Journal Of The Acoustical Society Of America, 134(4), 3242-3259. Publisher's official version : https://doi.org/10.1121/1.4818840 , Open Access version : https://archimer.ifremer.fr/doc/00176/28748/


References of Articles published in other Periodicals or Scientific Works acclaimed in the Field

Michel, M., Alglave, B., Olmos, M., Torterotot, M., Virgili, A., Martin-Marin, S., Royer, J.-Y., et al. (2025). Modelling the Influence of Environmental Factors on the Acoustic Presence of Blue Whale Populations in the Southern Indian Ocean. Scient. Rep., (In press).

References of Technical Reports

Branch, T.A. & et al. (including J-Y Royer) (2021). Monthly movements and historical catches of pygmy blue whale populations inferred from song detections. Rep. Mtg Int. Whal. Commn, Vols 1-Rep. Mtg Int. Whal. Commn, Vol. Rpt SC/68C/SH/17.

Dyment Jérôme, Lallier François, Le Bris Nadine, Rouxel OlivierORCID, Sarradin Pierre-MarieORCID, Lamare Sylvain, Coumert Coralie, Morineaux Marie, Tourolle JulieORCID (2014). Les impacts environnementaux de l’exploitation des ressources minérales marines profondes. Expertise scientifique collective. Rapport, CNRS – Ifremer, 937 p. https://archimer.ifremer.fr/doc/00872/98434/


Dyment Jérôme, Lallier François, Le Bris Nadine, Rouxel OlivierORCID, Sarradin Pierre-MarieORCID, Lamare Sylvain, Coumert Coralie, Morineaux Marie, Tourolle JulieORCID (2014). Les impacts environnementaux de l’exploitation des ressources minérales marines profondes. Expertise scientifique collective. Rapport, CNRS – Ifremer, 937 p. https://archimer.ifremer.fr/doc/00872/98434/


Dyment Jérôme, Lallier François, Le Bris Nadine, Rouxel OlivierORCID, Sarradin Pierre-MarieORCID, Lamare Sylvain, Coumert Coralie, Morineaux Marie, Tourolle JulieORCID (2014). Les impacts environnementaux de l’exploitation des ressources minérales marines profondes. Expertise scientifique collective. Rapport, CNRS – Ifremer, 937 p. https://archimer.ifremer.fr/doc/00872/98434/


Dyment Jérôme, Lallier François, Le Bris Nadine, Rouxel OlivierORCID, Sarradin Pierre-MarieORCID, Lamare Sylvain, Coumert Coralie, Morineaux Marie, Tourolle JulieORCID (2014). Les impacts environnementaux de l’exploitation des ressources minérales marines profondes. Expertise scientifique collective. Rapport, CNRS – Ifremer, 937 p. https://archimer.ifremer.fr/doc/00872/98434/


Dyment Jérôme, Lallier François, Le Bris Nadine, Rouxel OlivierORCID, Sarradin Pierre-MarieORCID, Lamare Sylvain, Coumert Coralie, Morineaux Marie, Tourolle JulieORCID (2014). Les impacts environnementaux de l’exploitation des ressources minérales marines profondes. Expertise scientifique collective. Rapport, CNRS – Ifremer, 937 p. https://archimer.ifremer.fr/doc/00872/98434/


References of International Seminar Communications

Bazin, S., Raumer, P.-Y., Lavayssière, A., Fauvel, H., Safran, R., Ingale, V.V., Tanrin, J., & J.-Y. Royer (2025). Monitoring underwater eruptions using networks of SOFAR hydrophones, Presented at the 8th Underwater Acoustics International Conference and Exhibition.

Michel, M., Alglave, B., Olmos, M., Torterotot, M., Virgili, A., Martin-Marin, S., Royer, J.-Y., et al., (2025). Modelling the Influence of Environmental Factors on the Acoustic Presence of Blue Whale Populations in the Southern Indian Ocean, Presented at the 36th annual European Cetacean Society Conference.

Raumer, P.-Y., Bazin, S., Cazau, D. & Royer, J.-Y. (2025). Leveraging existing hydroacoustic datasets to create and benchmark a multi-purpose detector. IEEE, Presented at the OCEANS 25, IEEE.

Raumer, P.-Y., Bazin, S., Rozen, J., Tanrin, J. & Royer, J.-Y. (2025). HYDROBS: an innovative passive hydroacoustic sensor for monitoring underwater volcanic and seismic events. IEEE, Presented at the OCEANS 25, IEEE.

Safran, R., Raumer, P.-Y., Sukhovich, A., Bazin, S., Briais, A. & Royer, J.-Y. (2025). Seismo-acoustic analyses for accurate clock-drift correction of autonomous long-term hydrophones. IEEE, Presented at the OCEANS 25, IEEE.

Raumer, P.-Y., Bazin, S., Cazau, D., Ingale, V.V. & Royer, J.-Y. (2024). Hydroacoustic geophony automatic detection: an open benchmark dataset with an open model, Presented at the General Assembly, EGU. Retrieved from https://doi.org/10.5194/egusphere-egu24-5256

Ingale, V.V., Bazin, S. & Royer, J.-Y. (2023). Energetic and short water-born signals from mid-oceanic ridges, Presented at the Underwater Acoustics Conference and Exhibition 2023.

Ingale, V.V., Raumer, P.-Y., Bazin, S. & Royer, J.-Y. (2023). Detection of T-waves associated with mid-ocean ridge seismicity recorded by hydroacoustic networks: manual versus automatic approaches, Presented at the CTBTO: Science and Technology Conference 2023.

Raumer, P.-Y., Bazin, S., Cazau, D., Royer, J.-Y., Ingale, V.V. & Lavayssiere, A. (2023). Application of machine learning to hydro-acoustic seismic and magmatic events detections, Abstract EGU23-7028, Presented at the EGU General Assembly 2023. doi:10.5194/egusphere-egu23-7028

Ingale, V.V., Bazin, S. & Royer, J.-Y. (2022). Hydroacoustic detections of seismic clusters along the mid-ocean ridges in the Indian Ocean using hydrophones of CTBTO and OHASISBIO networks, Presented at the International Hydroacoustics Workshop 2022 (CTBTO). Retrieved from https://doi.org/10.5194/egusphere-egu22-462

Ingale, V.V., Bazin, S. & Royer, J.-Y. (2022). Hydroacoustic observations of a seismic swarm near Melville fracture zone along the Southwest Indian Ridge in 2016-17, p. Abstract EGU22-462, Presented at the EGU General Assembly. doi:10.5194/egusphere-egu22-462

Ingale, V.V., Bazin, S. & Royer, J.-Y. (2022). Hydroacoustic observations of seismic swarms along the Southwest Indian Ridge of the Indian Ocean, Presented at the International Indian Ocean Science Conference 2022 - Technical Session: Geology, Geophysics and seabed mapping of the Indian Ocean.

Ingale, V.V., Bazin, S. & Royer, J.-Y., 2021, Hydroacoustic observations of two contrasted seismic swarms along the Southwest Indian Ridge in 2018. Abstract EGU21-5131, EGU General Assembly, Vienna, Austria.

Royer, J.-Y. (2021). What does long-term monitoring of the ocean soundscape tell us?, Presented at the EMSO Time Series Conference: Observing Ocean Sound.

Samaran, F., Torterotot, M., Beesau, J., Leroy, E.C., Barruol, G., Bazin, S. & Royer, J.-Y. (2021). Blue whale acoustic monitoring in the southern Indian Ocean?: an overview from large array of hydrophones, Presented at the EMSO Time Series Conference: Observing Ocean Sound.

Dziak, R.P., Lau, T.K., Matsumoto, H., Mellinger, D.K., Haxel, J., Haver, S., Bohnenstiehl, D.R., Gedamke, J., Hatch, L., Lee, W.S., McKenna, M., Royer, J.-Y. & Smith, D.K., 2020, Seasonal variation of the global low-frequency ocean soundscape from 25 years of NOAA-PMEL hydrophone deployments. Abstract #644292, Ocean Sciences Meeting, San Diego, CA.

Royer, J.-Y., Beauverger, M., Torterotot, M. & Lecoulant, J., 2019, Seismic crises along the Southwest Indian Ridge: insights from hydroacoustic observations. Abstract #544476, AGU Fall Meeting, San Francisco, CA.

Royer, J.-Y., Hello, Y., Rozen, J., Yegikyan, M. & Beauverger, M., 2019, HYDROBS: a versatile long-term data-logger with messengers for monitoring the water column. Abstract EGU2019-16793, EGU General Assembly, Vienna, Austria.

Torterotot, M., Samaran, F. & Royer, J.-Y., 2019. Detection strategy for long-term acoustic monitoring of blue whale stereotyped and non-stereotyped calls in the Southern Indian Ocean. In Proceedings of OCEANS 2019 MTS/IEEE Marseille, pp. 190113-190009 Marseille, France.

Torterotot, M., Samaran, F. & Royer, J.-Y., 2019. Seasonal and geographical occurrence of blue whale stereotyped and non-stereotyped calls in the southern Indian Ocean. In Proceedings of World Marine Mammal Conference, pp., Barcelona, España.

Torterotot, M., Samaran, F. & Royer, J.-Y., 2019. Sounds from airguns and blue whales recorded from a long-term hydrophone network in the Southern Indian Ocean. In Proceedings of 178th Meeting of the Acoustical Society of America, pp. 2939, San Diego Ca, USA.

Leroy, E.C., Thomisch, K., Royer, J.-Y., Boebel, O. & Van Opzeeland, I., 2018, On the reliability of acoustic annotations and automatic detections of Antarctic blue whale calls under different acoustic conditions. 8th International DCLDE workshop, Paris.

Torterotot, M., Socheleau, F.-X., Samaran, F. & Royer, J.-Y., 2018, Automated detection of non-stereotyped whale calls using dictionary-based representations: application to blue whale D-calls. 8th International DCLDE workshop, Paris.

Leroy, E.C., Samaran, F., Bonnel, J. & Royer, J.-Y., 2017. Two new whale calls in the southern Indian Ocean, and their geographic, seasonal distribution over five sites and seven years (Abstract #2aAB6). In Proceedings of Acoustics '17 Boston, 173rd Meeting of the Acoustical Society of America, pp. 3544, Boston, MA.

Samaran, F., Royer, J.-Y., Leroy, E.C., Maia, M.A. & Stafford, K.M., 2017. Antarctic blue whales (Balaenoptera musculus intermedia) recorded north of the Equator in the Atlantic Ocean. In Proceedings of 22nd Biennial Conference of the Biology of Marine Mammals, pp., Halifax, Nova Scotia, Canada.

Peureux, C., Ardhuin, F. & Royer, J.-Y., 2016, Near field ocean surface waves acoustic radiation observation and modelling. Abstract #170499, AGU Fall Meeting, San-Francisco, CA.

Royer, J.-Y., Perrot, J., Sukhovich, A., Guennou, C. & Beauverger, M., 2016. Hydroacoustic measurements for seismology. In Proceedings of 2016 ORFEUS Observatory Coordination Meeting, pp., Dubrovnik, Croatia.

Leroy, E., Socheleau, F.-X., Carvallo Pecci, A., Samaran, F., Bonnel, J. & Royer, J.-Y., 2015, Robust detection of Antarctic blue whale calls, and comparison with classical spectrogram correlation. The 7th International DCLDE [Detection, Classification, Localization, and Density Estimation] Workshop, La Jolla, CA.

Royer, J.-Y., Perrot, J., Guennou, C., Sukhovich , A. & Maia, M., 2015. Relevance of passive hydroacoustic observatories for monitoring the high-seas marine environment. In Proceedings of IEEE/OES RIO Acoustics 2015, pp., Rio de Janeiro, Brazil.

Samaran, F., Leroy, E., Miller, B.S., Double, M. & Royer, J.-Y., 2015, Chatty Antarctic blue whales, tell me more about your calls. 21st Biennal Conference on Marine Mammals, San-Francisco, CA.

Tsang-Hin-Sun, E. & Royer, J.-Y., 2015, Contribution of seasonal presence of cetaceans, earthquakes, drifting icebergs and anthropogenic activity to the ambient noise level in the Southern Indian Ocean. Abstract EGU2015-10422, EGU General Assembly, Vienna, Austria.

Tsang-Hin-Sun, E. & Royer, J.-Y., 2015, From T-wave energy to fault parameters: empirical relationship and preliminary results from modelling. Abstract EGU2015-11782, EGU General Assembly, Vienna, Austria.

Tsang-Hin-Sun, E., Royer, J.-Y. & Perrot, J., 2015, Spatial and temporal distribution of the seismicity along two mid-oceanic ridges with contrasted spreading rates in the Indian Ocean. Abstract #62357, AGU Fall Meeting, San-Francisco, CA.

Tsang-Hin-Sun, E., Royer, J.-Y., Sukhovich , A. & Perrot, J., 2014, Analysis of the low-level seismicity along the Southern Indian Ocean spreading ridges recorded by the OHASISBIO array of hydrophones in 2012. Abstract EGU2014-1351, EGU General Assembly, Vienna, Austria.

Jamet, G., Guennou, C., Guillon, L. & Royer, J.-Y., 2013. Analysis of a T-wave simulated by a spectral element method. In Proceedings of ECUA & UAM Conference, pp., Corfu, Greece.

Royer, J.-Y., Chateau, R., D'Eu, J.-F., Guennou, C., Jamet, G., Perrot, J., Sukhovich, A., Tsang-Hin-Sun, E., Brachet, C., Guinet, C. & Samaran, F., 2013. Long-term hydroacoustic monitoring in the Atlantic and Indian Oceans. In Proceedings of IAHS - IAPSO - IASPEI Joint Assembly, pp. Abstract P2S2.06, Goteborg, Sweden.

Royer, J.-Y., D'Eu, J.-F., Sukhovich , A. & Perrot, J., 2013. Autonomous hydrophone array for long-term acoustic monitoring in remote oceans. In Proceedings of ECUA & UAM Conference, pp., Corfu, Greece.

Samaran, F., Stafford, K.M., Pressiat, G., Adam, O., Royer, J.-Y. & Guinet, C., 2013. Geographic, seasonal and diel patterns of Antarctic blue whale calls in the Indian and Southern oceans. In Proceedings of 27th European Cetacean Society Conference, pp., Setubal, Portugal.

Samaran, F., Stafford, K.M., Royer, J.-Y. & Guinet, C., 2013. Diel variation of the acoustic activity of two blue whale subspecies in the Indian and Southern Oceans. In Proceedings of 20th Biennial Conference on the Biology of Marine Mammals, pp., Dunedin, New-Zealand.

Ardhuin, F., Herbers, T., Marié, L., Royer, J.-Y., Obrebski, M., Stutsmann, E. & Schimmel, M., 2012. Low frequency noise generated by ocean waves: a consistent theory from surface gravity waves to seismic Rayleigh and waves. In Proceedings of EGU Meeting, pp. EGU2012-11535, European Geophysical Union, Vienna.

Royer, J.-Y., Perrot, J., Guennou, C., D'Eu, J.-F. & Brachet, C., 2011. Autonomous-hydrophone arrays: a powerful tool for long-term monitoring of geological processes, biological activity and iceberg tremors over large and remote areas of the ocean. In Proceedings of EGU Meeting, pp. Abstract EGU2011-8794, European Geophysical Union, Vienna.

DEA or MASTER 2 using campaign data

Fama, M., 2020. Modélisation de la génération des chorus formés par les chants de baleines, Master Dissertation, Sorbonne Université.

Weber, K.F., 2017. Passive acoustic monitoring: data processing and bioacoustic analyses, Stage M2 Erasmus+, Univ. Brest.

Verhoest, L., 2016. Traitement et analyse de données hydroacoustiques, Mémoire de stage L3, Université de Brest, Brest.

Thesis using campaign data

Safran, R. (2027) en cours. Dynamique de l'accrétion océanique aux dorsales par acoustique passive long-terme, Dissertation. Laboratoire Géo-Océan, University of Brest, Brest.

Raumer, P.-Y. (2025) Oct. 2022-en cours. Application de l'intelligence artificielle à la détection automatique d'évènements pour les observations hydroacoustiques. Université de Brest.

Dréo, Richard (2025) Jan. 2022-en cours. Détection et suivi de grandes baleines par mesures hydroacoustiques et sismologiques. Apport des mesures en fond de mer et dans le canal SOFAR. Université Paris Cité.

Ingale Vaibhav Vijay (2023). Dynamics of seafloor spreading from hydroacoustic analyses of seismic swarms along the three Indian Ocean ridges. PhD Thesis, Université de Bretagne Occidentale.


Ingale, V.V. (2023). Dynamique de l'accrétion océanique vue par l'analyse d'essaims de séismes détectés depuis 10 ans sur trois dorsales à taux d'ouverture contrastés, Dissertation. Laboratoire Géosciences Océan, University of Brest, Brest.

Ingale Vaibhav Vijay (2023). Dynamics of seafloor spreading from hydroacoustic analyses of seismic swarms along the three Indian Ocean ridges. PhD Thesis, Université de Bretagne Occidentale.


Torterotot Maëlle (2020). Traitement et analyse de données bioacoustiques dans l'océan Indien austral : application aux baleines bleues / Processing and analysis of bioacoustic signals in the southern Indian Ocean. PhD Thesis, Université de Bretagne Occidentale.


Lecoulant Jean (2019). Modélisation et simulation d'ondes T : modes de Rayleigh et effets 3D / Modeling and simulating T-waves : Rayleigh modes and 3D-effects. PhD Thesis, Université de Bretagne Occidentale.


Leroy Emmanuelle (2017). Surveillance acoustique des baleines bleues Antarctique dans l’océan Indien austral : traitement, analyse et interprétation / Acoustic monitoring of Antarctic blue whales in the Southern Indian Ocean : data processing, analysis and interpretation. PhD Thesis, Université de Bretagne Occidentale.


Leroy Emmanuelle (2017). Surveillance acoustique des baleines bleues Antarctique dans l’océan Indien austral : traitement, analyse et interprétation / Acoustic monitoring of Antarctic blue whales in the Southern Indian Ocean : data processing, analysis and interpretation. PhD Thesis, Université de Bretagne Occidentale.


Leroy Emmanuelle (2017). Surveillance acoustique des baleines bleues Antarctique dans l’océan Indien austral : traitement, analyse et interprétation / Acoustic monitoring of Antarctic blue whales in the Southern Indian Ocean : data processing, analysis and interpretation. PhD Thesis, Université de Bretagne Occidentale.


Leroy Emmanuelle (2017). Surveillance acoustique des baleines bleues Antarctique dans l’océan Indien austral : traitement, analyse et interprétation / Acoustic monitoring of Antarctic blue whales in the Southern Indian Ocean : data processing, analysis and interpretation. PhD Thesis, Université de Bretagne Occidentale.


Leroy Emmanuelle (2017). Surveillance acoustique des baleines bleues Antarctique dans l’océan Indien austral : traitement, analyse et interprétation / Acoustic monitoring of Antarctic blue whales in the Southern Indian Ocean : data processing, analysis and interpretation. PhD Thesis, Université de Bretagne Occidentale.


Leroy Emmanuelle (2017). Surveillance acoustique des baleines bleues Antarctique dans l’océan Indien austral : traitement, analyse et interprétation / Acoustic monitoring of Antarctic blue whales in the Southern Indian Ocean : data processing, analysis and interpretation. PhD Thesis, Université de Bretagne Occidentale.


Leroy Emmanuelle (2017). Surveillance acoustique des baleines bleues Antarctique dans l’océan Indien austral : traitement, analyse et interprétation / Acoustic monitoring of Antarctic blue whales in the Southern Indian Ocean : data processing, analysis and interpretation. PhD Thesis, Université de Bretagne Occidentale.


Leroy Emmanuelle (2017). Surveillance acoustique des baleines bleues Antarctique dans l’océan Indien austral : traitement, analyse et interprétation / Acoustic monitoring of Antarctic blue whales in the Southern Indian Ocean : data processing, analysis and interpretation. PhD Thesis, Université de Bretagne Occidentale.


Tsang-Hin-Sun Eve (2016). Dynamique spatiale et temporelle de dorsales à taux d’expansion contrastés dans l’océan Indien par une approche hydroacoustique. PhD Thesis, Université de Bretagne Occidentale.


Jamet Guillaume (2014). Modélisation d'ondes sismo-acoustiques par la méthode des éléments spectraux : application à un séisme en Atlantique Nord. PhD Thesis, Université de Bretagne Occidentale.


Jamet, G. (2014). Modélisation d'ondes sismo-acoustiques par la méthode des éléments spectraux: application à un séisme en Atlantique nord, Doctorat/PhD. Lab. Domaines Océaniques, Université de Brest, Brest. Retrieved from https://tel.archives-ouvertes.fr/tel-01905190 http://www.theses.fr/2014BRES0030 http://www.sudoc.fr/231143036