Investigation of T-Wave Propagation in the Offshore Area East of Taiwan from Early Analog Seismic Network Observations
Extant paper records of the early analog seismic network of Taiwan represent a large resource for earthquake studies in several disciplines. In this study, we report on T waves generated from offshore earthquakes, based on analog observations. The T phases were identified from their stable apparent...
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| Format: | Article |
| Language: | English |
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Springer
2011-01-01
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| Series: | Terrestrial, Atmospheric and Oceanic Sciences |
| Subjects: | |
| Online Access: |
http://tao.cgu.org.tw/images/attachments/v224p383.pdf
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| _version_ | 1828278499307159552 |
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| author | Bor-Shouh Huang Po-Fei Chen Yi-Ling Huang Win-Gee Huang Chun-Chi Liu |
| author_facet | Bor-Shouh Huang Po-Fei Chen Yi-Ling Huang Win-Gee Huang Chun-Chi Liu |
| author_sort | Bor-Shouh Huang |
| collection | DOAJ |
| description | Extant paper records of the early analog seismic network of Taiwan represent a large resource for earthquake studies in several disciplines. In this study, we report on T waves generated from offshore earthquakes, based on analog observations. The T phases were identified from their stable apparent velocity of about 1.5 km s-1 and other observations using data recorded by stations in eastern Taiwan and on two nearby islands. The observed T phases are recorded for the first time from Taiwan, and in particular are observed by the network in the distal range of local earthquakes. Most of the T waves are observed at island stations at epicentral distances greater than 100 km. For earthquakes that occurred a great distance east of Taiwan, the T phases are always the most dominant phases observed at island stations east of Taiwan, and are also seen at some inland stations with smaller amplitudes. No T phases from inland events were observed by stations on Taiwan or on nearby islands. The observations indicate that the amplitude of the T phase is highly attenuated on its land path and that the propagation direction of the T phase is affected by water depth. |
| first_indexed | 2024-04-13T07:32:07Z |
| format | Article |
| id | doaj.art-17f79c916abb4117af6dc1f5f57bb8e5 |
| institution | Directory Open Access Journal |
| issn | 1017-0839 2311-7680 |
| language | English |
| last_indexed | 2024-04-13T07:32:07Z |
| publishDate | 2011-01-01 |
| publisher | Springer |
| record_format | Article |
| series | Terrestrial, Atmospheric and Oceanic Sciences |
| spelling | doaj.art-17f79c916abb4117af6dc1f5f57bb8e52022-12-22T02:56:20ZengSpringerTerrestrial, Atmospheric and Oceanic Sciences1017-08392311-76802011-01-0122438310.3319/TAO.2011.03.09.01(T)1022Investigation of T-Wave Propagation in the Offshore Area East of Taiwan from Early Analog Seismic Network ObservationsBor-Shouh HuangPo-Fei ChenYi-Ling HuangWin-Gee HuangChun-Chi LiuExtant paper records of the early analog seismic network of Taiwan represent a large resource for earthquake studies in several disciplines. In this study, we report on T waves generated from offshore earthquakes, based on analog observations. The T phases were identified from their stable apparent velocity of about 1.5 km s-1 and other observations using data recorded by stations in eastern Taiwan and on two nearby islands. The observed T phases are recorded for the first time from Taiwan, and in particular are observed by the network in the distal range of local earthquakes. Most of the T waves are observed at island stations at epicentral distances greater than 100 km. For earthquakes that occurred a great distance east of Taiwan, the T phases are always the most dominant phases observed at island stations east of Taiwan, and are also seen at some inland stations with smaller amplitudes. No T phases from inland events were observed by stations on Taiwan or on nearby islands. The observations indicate that the amplitude of the T phase is highly attenuated on its land path and that the propagation direction of the T phase is affected by water depth. http://tao.cgu.org.tw/images/attachments/v224p383.pdf T-waveEarthquakePropagationAnalog recordsTaiwan |
| spellingShingle | Bor-Shouh Huang Po-Fei Chen Yi-Ling Huang Win-Gee Huang Chun-Chi Liu Investigation of T-Wave Propagation in the Offshore Area East of Taiwan from Early Analog Seismic Network Observations Terrestrial, Atmospheric and Oceanic Sciences T-wave Earthquake Propagation Analog records Taiwan |
| title | Investigation of T-Wave Propagation in the Offshore Area East of Taiwan from Early Analog Seismic Network Observations |
| title_full | Investigation of T-Wave Propagation in the Offshore Area East of Taiwan from Early Analog Seismic Network Observations |
| title_fullStr | Investigation of T-Wave Propagation in the Offshore Area East of Taiwan from Early Analog Seismic Network Observations |
| title_full_unstemmed | Investigation of T-Wave Propagation in the Offshore Area East of Taiwan from Early Analog Seismic Network Observations |
| title_short | Investigation of T-Wave Propagation in the Offshore Area East of Taiwan from Early Analog Seismic Network Observations |
| title_sort | investigation of t wave propagation in the offshore area east of taiwan from early analog seismic network observations |
| topic | T-wave Earthquake Propagation Analog records Taiwan |
| url |
http://tao.cgu.org.tw/images/attachments/v224p383.pdf
|
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