| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2009-11-12 |
| タイトル |
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タイトル |
秋田県能代市における地盤の振動特性（1）－微地形・地質および本海中部地震（1983年）による地盤災害と微動特性との関係－ |
| 言語 |
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言語 |
jpn |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
斎藤, 徳美
阿部, 司
小林, 直太
中島, 直吉
中村, 操
野越, 三雄
毎熊, 輝記
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| 著者別名 |
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識別子Scheme |
WEKO |
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識別子 |
61231 |
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姓名 |
SAITO, Tokumi |
| 著者別名 |
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識別子Scheme |
WEKO |
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識別子 |
61232 |
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姓名 |
ABE, Mamoru |
| 著者別名 |
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識別子Scheme |
WEKO |
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識別子 |
61233 |
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姓名 |
KOBAYASHI, Naota |
| 著者別名 |
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識別子Scheme |
WEKO |
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識別子 |
61234 |
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姓名 |
NAKAJIMA, Naoyoshi |
| 著者別名 |
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識別子Scheme |
WEKO |
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識別子 |
61235 |
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姓名 |
NAKAMURA, Misao |
| 著者別名 |
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識別子Scheme |
WEKO |
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識別子 |
61236 |
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姓名 |
NOGOSHI, Mitsuo |
| 著者別名 |
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識別子Scheme |
WEKO |
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識別子 |
61237 |
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姓名 |
MAIGUMA, Teruki |
| 著者(機関) |
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値 |
岩手大学工学部 |
| 著者(機関) |
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値 |
東北大学工学部 |
| 著者(機関) |
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値 |
中央大学理工学部 |
| 著者(機関) |
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値 |
（株）東京ソイルリサーチ |
| 著者(機関) |
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値 |
日本物理探鉱（株） |
| 著者(機関) |
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値 |
秋田大学教育学部 |
| 著者(機関) |
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値 |
埼玉大学工学部 |
| 登録日 |
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日付 |
2009-11-12 |
| 書誌情報 |
物理探査
巻 41,
号 1,
p. 47-63,
発行日 1988-01-01
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| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0912-7984 |
| Abstract |
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内容記述タイプ |
Other |
|
内容記述 |
The 1983 Nihonkai-chubu earthquake occurred of Noshiro City, Akita prefecture, Japan on May 26,1983. Damage due to soil liquefaction was found at many sites in Noshiro City and areas heavily damaged by soil liquefaction were located between sand-dune and soft alluvium with a very shallow level of ground water. The results of investigations on the characteristics of microtremors around Noshiro City, which suffered great damage, were described in conjunction with S-wave velocities of ground surface, geological conditions(microtopography and sdbsurface geology) and the areas damaged by the 1983 Nihonkai-chub earthquake. The short-period microtremors were measured at sites in the above areas by 3-component seismometers with a natural period of 1sec. connected to amplifiers and data recorders in field, and were analysed by means of micro-computer in laboratory. The digitized time ⊿t of microtremors was taken equally at 0.02sec. considering the frequency range (1-25Hz) under investigation. Fourier spectra were
calculated by means of FFT from 2048 digitized data of wave forms of microtremors. Overall frequency
characteristics were flat between about 1.0 and 25Hz. Results of this investigation are as follows: 1) All spectra of the microtremors were classified into four types(A,B,C and D) for about 1.0 to 10 Hz. Type A has a single peak below 1,5 Hz in the spectra, type B has a single peak below 1.5 Hz and a peak from 2.0 to 3.0 Hz, type C has a peak from 2.0 to 3.0 Hz, and type D has plural peaks from 1.0 to 10Hz. Furthermore, a diferent classification type a and b, from the previouse one, type A,B,C,and D were examined from the point of view of soil liquefaction as a peculiar damage. The type a has peaks above 4 Hz in the spectra and the type b has no peak there. 2) Average amplitudes of microtremors are particularly small at terrace, and they are slightly larger at natural levee and point bar than at terrace. Type A of microtremor spectra is found mostly at terrace and type B tends to be found more at older alluvial soil. 3) Type a of microtremor spectra is measured mostly in areas damaged by soil liquefaction. The spectral peaks at frequencies higher than 4Hz are found to be related to large velocity contrast between layers. Therefore, microtremor measurements can be useful to estimate the damage due to soil liquefaction in earthquakes. |
| 出版者 |
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出版者 |
社団法人物理探査学会 |
| 権利 |
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権利情報 |
copyright (c) 1988 SEGJ |
| 著者版フラグ |
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出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
bt-v41n1p47-63.pdf (1.9 MB)
