Seafloor crustal deformation data along the subduction zones around Japan obtained by GNSS-A observations

• Published in: Scientific data Vol. 5; no. 1; p. 180182
• Main Authors: Yokota, Yusuke, Ishikawa, Tadashi, Watanabe, Shun-ichi
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 11.09.2018; Nature Publishing Group; Nature Portfolio
• Subjects: 704/2151/2809; 704/2151/508; 704/2151/562; Data acquisition; Data collection; Data Descriptor; Earthquakes; Geodetics; Humanities and Social Sciences; Motivation; multidisciplinary; Ocean floor; Science; Seismology; Time series; Tsunamis; Japan
• ISSN: 2052-4463; 2052-4463
• DOI: 10.1038/sdata.2018.182

Crustal deformation data obtained by geodetic observation networks are foundations in the fields of geodesy and seismology. These data are essential for understanding plate motion and earthquake sources and for simulating earthquake and tsunami scenarios. Although relatively scarce, seafloor geodetic data are particularly important for monitoring the behaviour of undersea interplate boundary regions. Since the mid-1990s, we have been developing the combined Global Navigation Satellite System-Acoustic ranging (GNSS-A) technique for realizing seafloor geodesy. This technique allows us to collect time series of seafloor crustal deformation. Our published data can be used to investigate several seismological phenomena along the subduction zones around Japan, namely the Nankai Trough, Sagami Trough and Japan Trench. These regions are globally important places in geodesy and seismology and are also suitable for comparison with other geophysical datasets. Our intention is for these data to promote further understanding of megathrust zones. Design Type(s) time series design • data collection and processing objective • observational design Measurement Type(s) geodetic datum Technology Type(s) data acquisition system Factor Type(s) temporal_interval • monitoring device Sample Characteristic(s) North West Pacific Ocean • oceanic crust Machine-accessible metadata file describing the reported data (ISA-Tab format)