BBMOMAR2

Type Oceanographic cruise
Ship Le Suroît
Ship owner Ifremer
Dates 08/08/2008 - 17/08/2008
Chief scientist(s) BEGUERY Laurent

DIVISION TECHNIQUE DE L'INSU - UPS855 - LA SEYNE-SUR-MER

INSU Division Technique

Zone portuaire de Brégaillon

CS 20330

83507 La Seyne-sur-Mer Cedex

33 (0)4 94 30 49 80

https://dtinsu.prod.lamp.cnrs.fr/
DOI 10.17600/8020030
Objective

The BBMOMAR2 mission was made up of four interconnected seismological experiments: 1. A 1-year study of seismic events in the Lucky Strike volcano using an array of 5 instruments set 4.5 km apart in seismic network (deployment in 2007 and recovery in 2008) 2. A 1-year seismic study highlighting the hydrothermal site around the volcano. 3. A 3-year deployment of a marine broadband seismometer near the centre of the Lucky Strike segment, in order to study the mantle structure under the site and determine the background noise and high throughput variations for the marine sites (2007 - 2010). 4. A 1-year study of the background noise using a broadband seismometer, including deployment of a second broadband seismometer on the shelf between the Azores Lucky Strike and Ponta Delgada, each along with a current-meter set at a depth of 10 metres. Except for one short-period OBS lost in Indonesia in July, all the devices were replaced. So, these were not redeployments, but new devices put in place. The BBMOMAR 2 mission was to recover 6 seismometers and 2 current meters, deploy 5 seismometers (including one broadband) and deploy 12 Portuguese OBSS around the volcano and the Menez Hom. The 12 Portuguese OBSS will be recovered in November/December of this year and the 5 others next summer, at which time another broadband OBSS will be deployed for another year. CTD casts were performed for 4 nights to supplement a data course on mixing of processes and the rate of renewal for deep water.

Published data

Crawford Wayne, Cannat Mathilde, Sarradin Pierre-Marie, Romuald Daniel (2017). Array of autonomous short period Ocean Bottom Seismometers from the EMSO-Azores observatory, 2011-2012. https://doi.org/10.17882/48009


Data managed by SISMER

Bibliography

Publications

Fontaine Fabrice J., Cannat Mathilde, Escartin Javier, Crawford Wayne C. (2014). Along-axis hydrothermal flow at the axis of slow spreading Mid-Ocean Ridges: Insights from numerical models of the Lucky Strike vent field (MAR). Geochemistry Geophysics Geosystems, 15(7), 2918-2931. https://doi.org/10.1002/2014GC005372


Baillard Christian, Crawford Wayne C., Ballu Valerie, Hibert Clement, Mangeney Anne (2014). An Automatic Kurtosis-Based P- and S-Phase Picker Designed for Local Seismic Networks. Bulletin Of The Seismological Society Of America, 104(1), 394-409. https://doi.org/10.1785/0120120347


Crawford Wayne C., Rai Abhishek, Singh Satich C., Cannat Mathilde, Escartin Javier, Wang Haiyang, Daniel Romuald, Combier Violaine (2013). Hydrothermal seismicity beneath the summit of Lucky Strike volcano, Mid-Atlantic Ridge. Earth And Planetary Science Letters, 373, 118-128. https://doi.org/10.1016/j.epsl.2013.04.028


References of Technical Reports

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/


Rapport de mission BBMOMAR2, éditeur L BEGUERY

Rapport de mission BBMOMAR1, éditeur W CRAWFORD

References of International Seminar Communications

Ballu V., W. Crawford, O. de Viron and M. Cannat (2014), Precision of vertical seafloor deformation measurements at the summit of Lucky Strike Volcano, Réunion MOVE.

Crawford W., S. Singh, M. Cannat, J. Escartin and R. Daniel (2014), Hydrothermal seismicity beneath the summit of Lucky Strike volcano, Réunion MOVE.

Crawford W., V. Ballu, X. Bertin and M. Karpychev (2014), The source of deep ocean infragravity waves in the North Atlantic Ocean, Réunion MOVE.

Ballu V., W. C. Crawford, O. de Viron and M. Cannat (2013), Precision of vertical seafloor deformation measurements at the deep MOMAR observatory, 37°N Mid-Atlantic Ridge, AGU Fall Meeting, G21A-0747

Ballu V., O. de Viron, W. C. Crawford, M. Cannat and J. Escartin, Long-term observations of seafloor pressure variations at Lucky Strike volcano, Mid-Atlantic Ridge, Eos Trans. AGU, 2012.

Fontaine F. J., Cannat, Mathilde, J. Escartin, W. C. Crawford and S. C. Singh, Physical inter-relationships between hydrothermal activity, faulting and magmatic processes at the center of a slow-spreading, magma-rich mid-ocean ridge segment: A case study of the Lucky Strike segment (MAR, 37°03'-37°N), Eos Trans. AGU, 2012.

Crawford W., M. Cannat, S. Singh et al., 2011. Geophysical constraints on the magma feeding and structure of Lucky Strike segment, Mid-Atlantic Ridge. InterRidge Workshop on Ocean-Mantle Dynamics: From Spreading Center to Subduction Zone.

Rai A., H. Wang, S. C. Singh et al., Seismological evidence for an along-axis hydrothermal flow at the Lucky Strike hydrothermal vents site, Eos Trans. AGU, PS21A-1474, presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec., 2010.

Rai A., S. C. Singh, W. C. Crawford et al., Distribution of seismicity and thermal structure at Lucky Strike Hydrothermal Segment of Mid-Atlantic Ridge, AGU Fall Meeting, 2009.

Rai A., S. C. Singh, W. C. Crawford, J. Escartin and M. Cannat, OBS records of whale vocalizations from Lucky Strike segment of the Mid-Atlantic Ridge during 2007-2008, AGU Fall Meeting, 2009.

References of National Seminar Communications

Crawford W., S. Singh, R. Daniel et al., 2011. MoMAR-FR : Réseau OBSs. Réunion MoMAR-SAT.

DEA or MASTER 2 using campaign data

Jourdain A., Sismicité d?un volcan sous-marin actif sur la dorsale Médio-Atlantique : Site de Lucky Strike, IPGP, M2, 2012.