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Short title
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Microtremor survey
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Oral presentation
Date/Room/Chair
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May 2 PM1 (14:15 - 16:00)
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502
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Hisashi Nakahara
/ Hiroaki Sato
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May 2 PM2 (16:15 - 17:00)
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502
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Hiroaki Sato
/ Hisashi Nakahara
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Poster presentation
Date/Room
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May 2 (Core Time 16:15 - 17:30)
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Poster
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Contact
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Hisashi Nakahara
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Email
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naka@zisin.gp.tohoku.ac.jp
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Convener
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Hisashi Nakahara
/ Hiroaki Sato
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Scope
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Microseisms and microtremors (hereafter called microtremors) are considered to be caused by ocean swells and human activities, respectively. Though they are recognized as noise to seismic observations, they can be turned into useful signal in other point of view. The nature of microtremors has been long studied. And the utilization of microtremors for engineering applications have been actively made in Japan such as the classification of site conditions based on the predominant periods, and the estimation of subsurface velocity structures by means of the spatial auto-correlation (SPAC) method and the horizontal-to-vertical (H/V) spectral ratio. These methods are now widely used all over the world in order to estimate shallow subsurface structures in terms of the prediction of strong ground motions. And in the last decade, studies on microtremors have been revitalized, mainly because seismic interferometry was developed and seismic observations became more efficient. For example, the H/V method was reinterpreted based on the theory of diffuse waves. And the centerless circular array (CCA) method was newly developed. Moreover, temporal changes in shallow subsurface structures caused by the nonlinear site effect can be detected by analyzing long-term continuous records of microtremors. In this session, we widely invite contributions on the nature of microtremors and their applications to exploration in order to understand the present status and discuss future directions of the subjects.
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Notes
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| Time |
Presentation No |
Title |
Author |
Presenter |
Abstract |
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Oral Presentation May 2 PM1 (14:15-16:00) 502 to the top
|
|
14:15 - 14:35
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Invited
SSS35-01
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On the generalization of the SPAC method and the development of a CCA method
|
CHO, Ikuo
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CHO, Ikuo
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English
|
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14:35 - 14:50
|
SSS35-02
|
Detection of Rayleigh wave and Love wave detection from microtremor array measurements
|
OHORI, Michihiro
CITAK, Seckin
KUBO, Atsuki
other
|
OHORI, Michihiro
|
English
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14:50 - 15:05
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SSS35-03
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Estimating composition of ambient noise from three-component records at Tono array
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TAKAGI, Ryota
NAKAHARA, Hisashi
KONO, Toshio
other
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TAKAGI, Ryota
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English
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15:05 - 15:20
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3-min talk in an oral session (SSS35-P01 / SSS35-P02 / SSS35-P04 /SSS35-P05 / SSS35-P06)
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15:20 - 15:35
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SSS35-04
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Toward Earthquake Ground Motion Prediction using the Onshore-Offshore Ambient Seismic Field in Subduction Zones
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VIENS, Loic
MIYAKE, Hiroe
KOKETSU, Kazuki
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VIENS, Loic
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English
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15:35 - 15:38
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3-min talk in an oral session (SSS35-P07)
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15:38 - 15:57
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Invited
SSS35-05
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Review of study on microtremors and application for subsurface structure modeling
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SUZUKI, Haruhiko
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SUZUKI, Haruhiko
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English
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15:57 - 16:00
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3-min talk in an oral session (SSS35-P11)
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Oral Presentation May 2 PM2 (16:15-17:00) 502 to the top
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16:15 - 16:30
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SSS35-06
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Geological Interpretation of a Liquefied Area by 'i-Bido': A Case Study in Urayasu City, Japan (2)
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SATO, Shinji
HIGASHI, Masashi
HIGUCHI, Shigeo
other
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SATO, Shinji
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English
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16:30 - 16:45
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SSS35-07
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H/V Spectral Ratios for Both Microtremors and Earthquake Motions and Interpretation based the Diffuse Field Theory
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KAWASE, Hiroshi
MATSUSHIMA, Shinichi
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KAWASE, Hiroshi
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English
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16:45 - 17:00
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SSS35-08
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The Effect of the Basin Edge to the Directional Dependent Horizontal-to-Vertical Spectral Ratios of Microtremors
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MATSUSHIMA, Shinichi
DE MARTIN, Florent
KAWASE, Hiroshi
other
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MATSUSHIMA, Shinichi
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English
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| Presentation No |
Title |
Author |
Presenter |
Abstract |
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Poster Presentation May 2 Core Time (16:15-17:30) Poster to the top
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SSS35-P01
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Sophistication of microtremor methods to survey shallow structures, PartI: Development of automatic reading algorithms
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CHO, Ikuo
SENNA, Shigeki
FUJIWARA, Hiroyuki
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CHO, Ikuo
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English
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SSS35-P02
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Sophistication of microtremor methods to survey shallow structures, Part2 : Application of automatic reading algorithms
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SENNA, Shigeki
CHO, Ikuo
FUJIWARA, Hiroyuki
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SENNA, Shigeki
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English
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SSS35-P03
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Future Initiatives of development of microtremor survey observation system
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SENNA, Shigeki
FUJIWARA, Hiroyuki
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SENNA, Shigeki
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English
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SSS35-P04
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Estimation of phase velocity of Rayleigh wave using linear array
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ZHANG, Xinrui
MORIKAWA, Hitoshi
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ZHANG, Xinrui
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English
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SSS35-P05
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Estimation of Subsurface Structure using Microtremor Observation in Ogasawara Iwo-To Island
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MURAKOSHI, Takumi
KOMORI, Etsuro
SHIMADA, Masaki
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MURAKOSHI, Takumi
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English
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SSS35-P06
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Determination of Subsurface Structure of the Mt. Daisen area in Tottori Prefecture by Microtremor and Gravity Survey
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NOGUCHI, Tatsuya
KAGAWA, Takao
YASUNAGA, Harunobu
other
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NOGUCHI, Tatsuya
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English
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SSS35-P07
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Estimation of inter-station Green's functions using microtremor array data
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HAYASHIDA, Takumi
YOSHIMI, Masayuki
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HAYASHIDA, Takumi
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English
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SSS35-P08
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Seismic basement structure estimated from seismic interferometry and microtremor analysis
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KOIZUMI, Ryo
SAWADA, Akihiro
HIRAMATSU, Yoshihiro
other
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HIRAMATSU, Yoshihiro
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English
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SSS35-P09
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Retrieval of Green's function in a 3D inhomogeneous medium with nonisotropic source distribution using interferometry
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CHIMOTO, Kosuke
YAMANAKA, Hiroaki
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CHIMOTO, Kosuke
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English
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SSS35-P10
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Estimation of subsurface structure by high density microtremor observations in Kochi Plain
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OISHI, Yusuke
KUBO, Atsuki
TAKAHASHI, Hirokazu
other
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OISHI, Yusuke
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English
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SSS35-P11
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Recent Geological Interpretation of A Liquefied Area: A Case Study in Urayasu City, Japan (1)
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IWAMOTO, Hiroshi
HIGASHI, Masashi
HIGUCHI, Shigeo
other
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IWAMOTO, Hiroshi
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English
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