Japan Geoscience Union Meeting 2014

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Oral

Symbol S (Solid Earth Sciences) » S-TT Technology & Techniques

[S-TT57_30PM2] Seismometry and monitoring system

Wed. Apr 30, 2014 4:15 PM - 6:00 PM 423 (4F)

Convener:*Yuji Yagi(Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba), Chair:Masaki Kanao(National Institute of Polar Research), Genti Toyokuni(Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)

5:00 PM - 5:15 PM

[STT57-04] Seismic observation on Greenland Ice Sheet by the Japanese GLISN team (2011-2013), and a plan for the 2014 season

*Genti TOYOKUNI1, Masaki KANAO2, Yoko TONO3, Tetsuto HIMENO4, Seiji TSUBOI3 (1.RCPEVE, Tohoku Univ., 2.NIPR, 3.JAMSTEC, 4.Seikei Univ.)

Keywords:Greenland, glacial earthquake, GLISN network

Melting of the Greenland ice sheet is now in progress accompanying the global climate change. Recently, a new type of seismic event called "glacial earthquakes", which are generated by the movement of a large mass of ice within the glacial terminus, has been realized as a new way to monitor current ice sheet dynamics. In 2009, the multinational GreenLand Ice Sheet monitoring Network (GLISN), a large broadband seismological network in and around Greenland was initiated to monitor these events.Japan, a partner country of the GLISN project, has been sending a field team every year since 2011. The joint U.S. and Japanese team first constructed a seismic station (station code: ICESG) on the Greenland ice sheet. In 2012, we serviced two ice sites (ICESG, DY2G) and one rock site (NUUK). In 2013, the same team spent 11 days on ice for maintenance of ICESG and DY2G, and helped rogistics for another ice site (NEEM). This presentation summarizes our field activities on the GLISN project for three years, and show a plan for the 2014 season.Our activity is supported by JSPS KAKENHI 24403006.