GEOFON BRAVOSEIS Onshore Seismic Array

BRAVOSEIS Onshore Seismic Array

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Cite as

Heit, B.; Yuan, X.; Almendros, J.; Abella, R.; Carmona, E.; Aguí, F.; Carrión, P. (2020): BRAVOSEIS Onshore Seismic Array. GFZ Data Services. Dataset/Seismic Network. doi:10.14470/0Z7563857972.

Identifier

10.14470/0Z7563857972

DataCite metadata

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Terms/rights

Creative Commons Attribution 4.0 International CC-BY-4.0

Available since 2024-12-31

Creator(s)

Heit, B. ^a; Yuan, X. ^a; Almendros, J. ^b; Abella, R. ^c; Carmona, E. ^b; Aguí, F. ^b; Carrión, P. ^b
^a German Research Centre for Geosciences GFZ, Potsdam, Germany
^b University of Granada, Granada, Spain
^c National Geographic Institute, Madrid, Spain

Description

(Abstract) The Bransfield Strait is a seismically active extensional rift located between the Antarctic Peninsula and the South Shetland Islands. The Strait is partly located on continental crust including areas within the transition to seafloor spreading. The amphibious seismic network BRAVOSEIS is an international effort focused on the seismological research of submarine volcanoes and rift dynamics in the Bransfield Strait. This network is the onshore component of the entire network consisting of 15 broadband land stations deployed in the South Shetland Islands and Antarctic Peninsula between January 2018 and February 2020. The offshore components (network code ZX) include 9 broadband ocean bottom seismometers (OBS) across the Central Bransfield Basin and a group of 6 hydrophone moorings spanning the rift area of 200 × 100 km2, with inter-station distance of ~30 km. Additionally, a smaller offshore array consisting of 15 short-period OBSs with an aperture of 20 km and a narrow inter-station distance of ~4 km was deployed around the Orca submarine volcanic edifice south of King George Island. The data will be used to study the geodynamics of the Bransfield Strait and the evolution of the incipient rifting zone in the domain where extension has been suggested. Seismological methods will include earthquake location, source mechanism, surface wave analysis with ambient noise and earthquake data, receiver function and shear wave splitting. The results may shed light on the crustal structure and tectonic regime in the region and image the location and extent of magma accumulations related to submarine volcanic structures. Finally, the results should provide clues to assess the internal processes that occur in the submarine volcanoes of the area undergoing rifting. Waveform data are available from the GEOFON data centre, under network code 5M.

Title

BRAVOSEIS Onshore Seismic Array

Publisher

GFZ Data Services

Publication year

2020

Resource type

Dataset / Seismic Network

Dates

Collected 2018-01-01
Accepted 2018-02-14
Created 2020-07-27
Available 2024-12-31

Place(s)

Antarctica

Contributor(s)

Hosting institution: Deutsches GeoForschungsZentrum GFZ
Data manager: GEOFON Data Centre
Sponsor: Geophysical Instrument Pool Potsdam (GIPP)
Project members: Deutsches GeoForschungsZentrum GFZ; University of Granada, Granada, Spain; National Geographic Institute, Madrid, Spain

Subjects

SeisData terms: Amphibious GIPP Geophysics MESI MiniSEED Passive seismic Seismometers Temporary Velocity
GCMD keywords: Geophysical stations/networks Seismometers
Other terms: Monitoring system; Seismological stations

Funding reference(s)

GFZ Helmholtz Centre for Geosciences (GIPP201722)
Spanish Ministry of Economy and Competitiveness (MINECO) (CTM2016-77315)

Language

Sizes

132GB

Reference(s)

(Supplemented by) Almendros, Javier; Schmidt-Aursch, Mechita; Geissler, Wolfram (2020). Project BRAVOSEIS: DEPAS ocean-bottom seismometer operations in the Bransfield Strait in 2019-2020, https://doi.org/10.14470/MK678861
(References) Almendros, J.; Abella, R.; Carmona, E.; Agui, F.; Carrion, F.; Yuan, X.; Wilcock, W.; Wade, R.; Soule, D.; Schmidt-Aursch, M.; Dziak, R.; Roche, L.; Kane, T.; Gardner, A.; Garcia-Quiroga, D.; Heit, B.; Sondershaus, R.; Tesin, E.; Schmahl, L. and Natalie, J. (2019): Deployment of an Amphibious Seismic Network in the Bransfield Strait, Antarctica, 27th IUGG General Assembly, Montreal, Canada, 8-18 July 2019, hdl:10013/epic.768cc487-26b3-492b-9267-3ff7bdaef894
(References) Almendros, J.; Carmona, E.; Carrión, F.; Serrano, I.; Teixidó, T.; Peña, J. A.; Moreno, J.; Mancilla, F.; García-Quiroga, D.; Agüí-Fernández, J. F.; Moreno-Vacas, A.; Jiménez-Morales, V.; Ontiveros, A.; Abella, R.; Sánchez, N.; Martínez-Arévalo, C.; Granja, J. L.; Heit, B.; Yuan, X.; Schmidt-Aursch, M.; Geissler, W.; Bonatto, L.; Martos, Y.; Wilcock, W. S. D.; Dziak, R.; Lees, J.; Caselli, A.; Badi, G.; Julia, J. (2017). BRAVOSEIS: A research project to investigate the seismic activity of submarine volcanoes in the Bransfield Strait, Antarctica. In proceedings of 2nd Workshop of the SCAR Expert Group on Antarctic Volcanism (ANTVOLC), Barcelona, Spain, 22-24 November 2017.
(References) Almendros, J.; Carmona, E.; Carrión, F.; Serrano, I.; Teixidó, T.; Peña, J. A.; Moreno, J.; Mancilla, F.; García-Quiroga, D.; Agüí-Fernández, J. F.; Moreno-Vacas, A.; Jiménez-Morales, V.; Ontiveros, A.; Abella, R.; Sánchez, N.; Martínez-Arévalo, C.; Granja, J. L.; Heit, B.; Yuan, X.; Schmidt-Aursch, M.; Geissler, W.; Bonatto, L.; Martos, Y.; Wilcock, W. S. D.; Dziak, R.; Lees, J.; Caselli, A.; Badi, G.; Julia, J. (2018). BRAVOSEIS: un proyecto para investigar la actividad sísmica de los volcanes submarinos en el estrecho de Bransfield, Antártida. In proceedings of IX Simposio Español de Estudios Antárticos, Madrid, 5-7 de septiembre de 2018.
(References) Parera Portell, J. A. (2019). Structure of the crust and upper mantle beneath the Bransfield Strait (Antarctica) using P receiver functions [Dissertation], University of Granada (UGR, Granada, Spain).
(References) Davoli, R. (2019). Análisis de la sismicidad en el Estrecho de Bransfield (Antártida) durante el año 2018 y el principio del año 2019 [Dissertation], University of Granada (UGR, Granada, Spain).

FDSN network code

Network dates

2018–2020

Data time range

2018–2020

Station count

Seismic metadata

fdsnws-station

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