Seismic network at Deception Island Volcano, Antarctica, 2014/2015

This dataset comprises data from a five-station seismic network deployed at Deception Island volcano, Antarctica, from December 2014 to February 2015. This network is deployed during summer surveys, coinciding with the operations of the Spanish Base Gabriel de Castilla. More details can be found in Carmona et al (2014). The purpose of the network is to assess the seismo-volcanic activity at Deception Island volcano, continue with the long-term data series of seismo-volcanic activity that we maintain since 1994, investigate the internal processes that take place at Deception Island, and colaborate in the management of the volcanic alert system.The selected period contains earthquake data from a seismic swarm that occurred in the Bransfield Strait, near Livingston Island (Almendros et al. 2015, 2018). The swarm started in September 2014, therefore the dataset contains just a part of the tail of the Livingston seismic series, from December 2014 to February 2015. Additionally, the dataset includes volcano-tectonic earthquakes that occurred at Deception Island, most likely as a response to the perturbations induced by the Livingston seismic swarm. More information can be found in Almendros et al. (2018).DATA FORMATRaw seismograms in miniseed format (e.g. http://ds.iris.edu/ds/nodes/dmc/data/formats)DIRECTORY STRUCTUREData 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.DDDROOTDIR 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 NAMESBASE west of Gabriel de Castilla Base; C70 craters of the 1970 eruption; CHI Chilean Hut south of Pendulum Cove; FUM south beach of Fumarole Bay; OBS north of Obsidians BeachSTATION COORDINATESBASE 60.6767W 62.9775S; C70 60.6313W 62.9222S; CHI 60.5967W 62.9447S; FUM 60.7073W 62.9717S; OBS 60.6892W 62.9395SINSTRUMENTSAll stations are equipped with three-component, short-period seismometers, and a 24-bit SARA SL04 data acquisition system sampling at 100 sps. BASE, C70: Lennartz 3D/5s seismometer, natural frequency 0.2 Hz. OBS, CHI: Mark L4C seismometer, natural frequency 1 Hz. FUM: Mark L-28 seismometer, natural frequency extended to 1 Hz. More information can be found in Carmona et al (2014).RECORDING PERIODSBASE 2014-12-01 to 2015-02-24; C70 2014-12-14 to 2015-02-12; CHI 2014-12-08 to 2015-02-12; FUM 2014-12-21 to 2015-02-20; OBS 2014-12-01 to 2015-02-21SUPPORTING PROJECTSPOL2006-08663 (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)REFERENCESCarmona, E., Almendros, J., Martín, R., Cortés, G., Alguacil, G., Moreno, J., Martín,B., Martos, A., Serrano, I., Stich, D., Ibáñez, 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., Díaz-Moreno, A., Lorenzo, F., Berrocoso, M., De Gil, A., Fernández-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., Díaz-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).

本数据集包含2014年12月至2015年2月期间，部署于南极洲欺骗岛火山的五台台站地震台网的观测数据。该台网于夏季科考期间部署，与西班牙加夫列尔·德·卡斯蒂利亚基地（Spanish Base Gabriel de Castilla）的运行周期重合。更多细节可参见Carmona等人（2014）的研究成果。

该台网的建设目的为：评估欺骗岛火山的地震火山活动态势，延续自1994年起持续记录的地震火山活动长期序列，探究欺骗岛内部的地球物理过程，并协同参与火山预警系统的管理工作。

本次选取的观测时段包含布兰斯菲尔德海峡（Bransfield Strait）利文斯顿岛（Livingston Island）附近发生的地震群的地震数据（Almendros等，2015、2018）。该地震群于2014年9月启动，因此本数据集仅包含利文斯顿岛地震序列2014年12月至2015年2月的尾部片段。

此外，本数据集还收录了欺骗岛发生的火山构造地震，这类地震大概率是利文斯顿岛地震群诱发的地壳扰动所引发的响应。更多相关信息可参见Almendros等人（2018）的研究。

数据格式
原始地震波形数据采用miniseed格式存储（详见http://ds.iris.edu/ds/nodes/dmc/data/formats）。

目录结构
数据为单通道、单日时长的地震波形文件，文件命名与目录结构遵循SEISCOMP3 SDS规范（详见http://www.seiscomp3.org/wiki/doc/applications/slarchive/SDS），目录层级为：ROOTDIR/YYYY/NET/STAT/CHAN.TYPE/NET.STA.LOC.CHAN.TYPE.YYYY.DDD
其中ROOTDIR为数据存储根目录，YYYY为四位年份，NET为台网代码，STAT为台站名称，CHAN为台站通道编码，TYPE为数据类型标识字符（波形数据设为D），LOC为位置编码（留空），DDD为当年累计日序数。

台站名称
BASE：加夫列尔·德·卡斯蒂利亚基地西侧；C70：1970年火山喷发形成的火山口区域；CHI：钟摆湾（Pendulum Cove）南侧的智利小屋（Chilean Hut）；FUM：喷气孔湾（Fumarole Bay）南侧海滩；OBS：黑曜岩滩（Obsidians Beach）北侧

台站坐标
BASE：西经60.6767°，南纬62.9775°；C70：西经60.6313°，南纬62.9222°；CHI：西经60.5967°，南纬62.9447°；FUM：西经60.7073°，南纬62.9717°；OBS：西经60.6892°，南纬62.9395°

观测仪器
所有台站均配备三分量短周期地震计与24位SARA SL04数据采集系统，采样率为100 sps（每秒采样点数）。其中BASE与C70台站采用Lennartz 3D/5s地震计，固有频率为0.2 Hz；OBS与CHI台站采用Mark L4C地震计，固有频率为1 Hz；FUM台站采用Mark L-28地震计，固有频率拓展至1 Hz。更多仪器相关细节可参见Carmona等人（2014）的研究。

记录时段
BASE：2014-12-01至2015-02-24；C70：2014-12-14至2015-02-12；CHI：2014-12-08至2015-02-12；FUM：2014-12-21至2015-02-20；OBS：2014-12-01至2015-02-21

资助项目
本数据集得到以下项目资助：POL2006-08663（CORSHET项目，西班牙教育部）；CTM2009-07705、CTM2009-08085、CTM2010-11740、CTM2011-16049（西班牙科学与教育部）；IGME1198研究基金（2014-2015、2015-2016、2016-2017、2017-2018，西班牙极地委员会、西班牙经济部）；CTM2016-77315（BRAVOSEIS项目，西班牙经济部）

参考文献
1. Carmona, E., Almendros, J., Martín, R., Cortés, G., Alguacil, G., Moreno, J., Martín, B., Martos, A., Serrano, I., Stich, D., Ibáñez, J. M.，《自国际极地年以来南极洲欺骗岛火山的地震监测进展》，《地球物理学年报（Annals of Geophysics）》57卷第3期，SS0321，DOI:10.4401/ag-6378（2014）
2. Almendros, J., Carmona, E., Jimenez, V., Díaz-Moreno, A., Lorenzo, F., Berrocoso, M., De Gil, A., Fernández-Ros, A., Rosado, B.，《欺骗岛：2014-2015年科考期间的持续形变与地震活动显著增强》，《全球火山学网络通报（Bulletin of the Global Volcanism Network）》40卷第7期（2015）
3. Almendros, J., Carmona, E., Jimenez, V., Díaz-Moreno, A., Lorenzo, F.，《布兰斯菲尔德裂谷地震群（2014-2015）后欺骗岛火山的火山构造活动》，已投稿（2018）