Crustal Deformation Associated with the 1995 Hyogo-ken Nanbu Earthquake, Japan Derived from GPS Measurements.

Tabei, Takao; Kato, Teruyuki; Catane, John Patrick L.; Chachin, Toshikazu; Fujimori, Kunio; Hirahara, Kazuro; Kubo, Atsuki; Matsushima, Takeshi; Nakano, Takato; Nakao, Shigeru; Otsuka, Shigeaki; Terashima, Tsutomu; Yamamoto, Takafumi

doi:10.4294/jpe1952.44.281

Cited by 8 publications

(12 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This removal of soil may have also caused a local uplift, It should be noted that there is a region of subsidence or small uplift at the northern tip of Awaji Island, though there are only a few benchmarks (028-013 and 028-011). GPS observation by Tabei et al (1996) revealed subsidence of about 2.5 cm at Iwaya, relative to Usuda, central Japan, when comparing the result of February, 1995 with that of November, 1994. Since independent observations with two different techniques detected similar movements around Iwaya, we take this subsidence and small uplift of benchmarks into consideration in the following inversion analysis.…”

Section: Campaign Type Gps Survey Of Control Pointsmentioning

confidence: 99%

Co-seismic Displacements of the 1995 Hyogo-ken Nanbu Earthquake.

et al. 1996

View full text Add to dashboard Cite

Section: Campaign Type Gps Survey Of Control Pointsmentioning

confidence: 99%

Co-seismic Displacements of the 1995 Hyogo-ken Nanbu Earthquake.

et al. 1996

View full text Add to dashboard Cite

“…The comparison of horizontal displacements of Hashimoto et al (1996, arrows with open heads in Hashimoto et al (1996) and Tabei et al (1996). Arrows with solid heads and dotted legs indicate those used by Yamagata et al (1996), and they have been translated to arrows with solid legs by minimizing their differences from the open arrows.…”

Section: Geodetic Datasetmentioning

confidence: 99%

“…Tabei et al (1996) derived horizontal and vertical displacements from the results of these surveys by fixing the coordinates of a survey site in Kyoto, and an IGS global tracking site in Usuda. Since both the sites are far from the Kobe-Awaji area, and Hashimoto et al (1996) derived displacements smaller than 1 cm around them, we can expect no serious error due to the assumption of the fixed points.…”

Section: Geodetic Datasetmentioning

confidence: 99%

“…There are three kinds of datasets available: 1. geodetic data Tabei et al, 1996), 2. teleseismic waveforms provided by Incorporated Research Institutions for Seismology, and 3. strong motion seismograms (Japan Meteorological Agency (JMA), 1995; Toki et al, 1995; Kobe city government). Hashimoto et al (1996) derived a fault model from dataset 1.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A fault model of the 1995 Kobe earthquake derived from the GPS data on the Akashi Kaikyo Bridge and other datasets

2014

View full text Add to dashboard Cite

Co-seismic horizontal displacements, which have been obtained from recently released GPS observations on the Akashi Kaikyo Bridge, are examined for their consistency with displacements observed in the vicinity of the bridge. An E18.7• S displacement of 25.0 cm should be removed from them. The adjusted data indicate an additional fault segment beneath Akashi Strait. We construct a new fault model by adding this segment to a model assumed previously. We then recover the slip distribution over the new model by inverting these data together with other geodetic observations. The displacements calculated from the recovered distribution fit the observations well, and the distribution of slip indicates that the additional segment is closely related to the southern main segment of the previous model. Joint inversion of the geodetic and waveform datasets suggests large slips with longer duration in the shallow parts of these segments.

show abstract

“…Co-seismic displacements derived from these GPS observations close to the earthquake fault are important to constrain the location of the fault. The results are described in Tabei et al (1996) and Kimata et al (1995), and are used to estimate the rupture process (e.g., Yoshida et al, 1996). Figure 3 shows the distribution of 32 GPS sites by name in addition to the active faults.…”

Section: Introductionmentioning

confidence: 99%

GPS Observations of Post-Seismic Crustal Movements in the Focal Region of the 1995 Hyogo-ken Nanbu Earthquake. Static and Real-Time Kinematic GPS Observations.

et al. 1996

Self Cite

View full text Add to dashboard Cite

ost-seismic deformations in the focal region of the 1995 Hyogo-ken Nanbu earthquake (M=7 .2), in southwest Japan, which occurred on January 17 (JST), were observed with GPS observations . We deployed more than 30 GPS stations in and around the area of aftershock activity within several days after the occurrence of the earthquake. First the data were stored and manually collected at the observation sites , but by the middle of February the data at most of sites were started to be telemetered through public phone lines to data centers . GPS observations continued until the end of March, except for 4 sites left active for monitoring long-term deformations. We used two types of GPS observations, usual static and real-time kinematic GPS observations . Static day-by-day analyses, which are based on 24-h data sampled every 30 s, show the deformation associated with post-seismic readjustment with a relaxation time of about 70 days and with an amplitude of 1-2 cm in the area close to the epicenter. Also, rapid movements were observed just after the occurrence of the earthquake . However, since our analyses are only preliminary, further analyses are needed to clarify these observations and to investigate models of post-seismic deformations. Real-time kinematic GPS observations, which is a new type of GPS observations, were made every 1 s from February 9 to March 22 for detecting possible rapid relative movements between two sites across the surface fault trace on Awaji Island and across the other fault , the Arima-Takatsuki Tectonic Fault on the Kobe side. Present real-time kinematic GPS observations show scatters with the amplitude of 0.5-3.0 cm depending on components and baseline lengths . Any motions with amplitudes larger than these noise levels could not be detected during the observation period .

show abstract

Crustal Deformation Associated with the 1995 Hyogo-ken Nanbu Earthquake, Japan Derived from GPS Measurements.

Cited by 8 publications

References 4 publications

Co-seismic Displacements of the 1995 Hyogo-ken Nanbu Earthquake.

Co-seismic Displacements of the 1995 Hyogo-ken Nanbu Earthquake.

A fault model of the 1995 Kobe earthquake derived from the GPS data on the Akashi Kaikyo Bridge and other datasets

GPS Observations of Post-Seismic Crustal Movements in the Focal Region of the 1995 Hyogo-ken Nanbu Earthquake. Static and Real-Time Kinematic GPS Observations.

Contact Info

Product

Resources

About