Following the 1923 Kanto earthquake in Japan, Japanese researchers noticed strong effects of surface geology (ESG) on seismic motion and began to quantify the site amplification factors (SAFs) associated with soft surface sediments. Kawase et al. (20… もっと読む
Takamatsu et al. (2023) reprocesses the daily station coordinates of Japan's GNSS observation network "GEONET" since 1996 based on the newly developed analysis strategy "F5". Processing under the global baseline network, they achieve millimeter level… もっと読む
The Planetary Material Sample Curation Facility3 of JAXA is responsible for initial description of valuable returned samples, publication of catalog data2, sample storage, and sample distribution to researchers worldwide. As part of curatorial works,… もっと読む
Equatorial spread F (ESF) occurs globally at low magnetic latitudes in the Earth’s nighttime ionosphere. ESF is well-known for its adverse effect on the propagation of radio waves affecting navigation, telecommunication, and scientific satellite syst… もっと読む
When we gaze out on the distant universe, we see billions of galaxies and we also see hundreds of billions of stars in our own galaxy, the Milky Way. Whether we observe in the narrow wavelength band accessible to our human eyes, or we expand our visi… もっと読む
Fournier et al. (2021) report on physics-based secular variation forecasts for the international geomagnetic reference field (IGRF). Analysis of satellite data from 2000 onwards reveals that IGRF forecasts are worse at times of fast geomagnetic chang… もっと読む
Caudron et al. (2021) explores the seismic data associated with unrest and eruptions which occurred at Whakaari/White Island volcano in New Zealand for the last ~15 years. Using novel proxies taking advantage of continuous seismic records complemente… もっと読む
