Seismic stations at the Bransfield Strait, Antarctica, 2014-2015

Brief description

This dataset comprises data from three seismic stations deployed across the Bransfield Strait, Antarctica, at Livingston Island, Deception Island, and Cierva Cove, from August 2014 to May 2015. Stations were originally deployed in February 2008 to assess the local seismic activity at the selected sites, and to investigate the crustal structure across the Bransfield Strait. More details can be found in Carmona et al (2014). The selected period contains earthquake data from a seismic swarm that occurred in the Bransfield Strait, near Livingston Island (Almendros et al. 2015, 2018). This swarm comprises several thousand earthquakes with magnitudes up to 4.6 and event rates up to 180 earthquakes per day. More information can be found in Almendros et al. (2018). DATA FORMAT Raw seismograms in miniseed format (e.g. http://ds.iris.edu/ds/nodes/dmc/data/formats) DIRECTORY STRUCTURE Data are single-channel, one-day-long seismograms. Files are named and stored in a directory structure following the SEISCOMP3 SDS convention (http://www.seiscomp3.org/wiki/doc/applications/slarchive/SDS): ROOTDIR/YYYY/NET/STAT/CHAN.TYPE/NET.STA.LOC.CHAN.TYPE.YYYY.DDD ROOTDIR is the base folder where the data are stored, YYYY is the year, NN is the network code, STAT is the station name, CHAN is the code to identify the station channels, TYPE is a single character indicating the data type (set to D for waveform data), LOC is the location name (left empty), and DDD is the day of year. STATION NAMES CCV Cierva Cove; DCP Deception Island; LVN Livinston Island STATION COORDINATES CCV 60.9667W 64.1500S; DCP 60.6833W 62.9833S; LVN 60.3833W 62.6667S INSTRUMENTS All three stations are equipped with a 16-s, three-component EENTEC 4000 seismometer, and a 24-bit EENTEC DR-400 data acquisition system sampling at 100 sps. More information can be found in Carmona et al (2014). RECORDING PERIODS CCV 2014-08-01 to 2015-05-10; DCP 2014-08-01 to 2015-05-10; LVN 2014-08-01 to 2015-04-02 SUPPORTING PROJECTS POL2006-08663 (CORSHET project, Spanish Ministry of Education); CTM2009-07705, CTM2009-08085, CTM2010-11740, CTM2011-16049 (Spanish Ministry of Science and Education); Research Grant IGME1198 2014-2015, 2015-2016, 2016-2017, 2017-2018 (Spanish Polar Committee, Spanish Ministry of Economy); CTM2016-77315 (BRAVOSEIS project, Spanish Ministry of Economy) DATA QUALITY Timing errors have been occasionally detected at these stations due to GPS malfunction. We have corrected them using waveform correlations, although time has to be considered uncertain (within a fraction of a second) for the following station and period: LVN 2014-08-01 to 2014-11-30 REFERENCES Carmona, E., Almendros, J., Martín, R., Cortes, G., Alguacil, G., Moreno, J., Martin, B., Martos, A., Serrano, I., Stich, D., Ibanez, J. M. , Advances in seismic monitoring at Deception Island volcano (Antarctica) since the International Polar Year , Annals of Geophysics 57(3), SS0321, doi:10.4401/ag-6378 (2014) Almendros, J., Carmona, E., Jimenez, V., Diaz-Moreno, A., Lorenzo, F., Berrocoso, M., De Gil, A., Fernandez-Ros, A., Rosado, B. , Deception Island: Sustained deformation and large increase in seismic activity during the 2014-2015 survey , Bulletin of the Global Volcanism Network, 40(7) (2015) Almendros, J., Carmona, E., Jimenez, V., Diaz-Moreno, A., Lorenzo, F., Volcano-tectonic activity at Deception Island volcano following a seismic swarm in the Bransfield Rift (2014-2015), submitted for publication (2018).