• Recommended articles
  • August 21, 2017

Volcanic activity on Io and its influence on the dynamics of the Jovian magnetosphere observed by EXCEED/Hisaki in 2015

Jupiter's moon Io, which orbits deep inside the magnetosphere, is the most geologically active object in the solar system. Kurdalagon Patera, a volcano on Io, erupted in 2015 and became a substantial source of Jovian magnetospheric plasma. Based on Earth-orbiting spacecraft observations, Io plasma torus (IPT) exhibited the peak intensity (nearly double) of ionic sulfur emissions roughly 2 month later, followed by a decay phase. This environmental change provides a… Read more

  • News
  • August 18, 2017

Deadline for submissions extended to 31 December: “Towards Forecasting Phreatic Eruptions: Examples from Hakone Volcano and some Global Equivalents”

The deadline for submissions has been extended to 31 December 2017. More information for this special issue can be found via the following link. “Towards Forecasting Phreatic Eruptions: Examples from Hakone Volcano and some Global Equivalents” Read more

  • News
  • August 17, 2017

Vice Editor-in-Chief introduces EPS in AOGS Annual Meeting 2017

Vice Editor-in-chief, Nozomu Nishitani, introduced about EPS in “Innovation Theatre” of AOGS Annual Meeting 2017. Abstract Read more

  • Event
  • July 24, 2017

EPS booth in AOGS Annual Meeting 2017

Please visit EPS booth in AOGS Annual Meeting 2017 to be held in Singapore, from 6 to 11 August 2017. Our booth is located at #D04, next to poster presentation area and you can reach easily. You can have nice souvenirs upon answering a questionnaire on our journal. – AOGS 14th Annual Meeting 2017 – Exhibition information: Floor Plan Read more

  • Recommended articles
  • July 11, 2017

Design and operation of a 1500-m laser strainmeter installed at an underground site in Kamioka, Japan

A laser strainmeter with a 1500 m baseline was constructed at an underground site in Kamioka, Gifu Prefecture, Japan. The interferometer using a high frequency-stabilized laser measures the change in distance between two retroreflectors in the tunnel of the KAGRA gravitational-wave telescope. Since operations began in August 2016, ground motions with various timescales have been detected. The tidal waveform agrees with the theoretical waveform after topographic corrections. The strain spectrum indicates the lowest background noise of less than 10−12 in the mHz band. The strainmeter provides a new method for observing low frequency ground motion on seismic, geodetic, and intermediate timescales. Click to view the article Read more