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1969年渤海Ms7.4地震发震断层的声学探测 被引量:10
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作者 李西双 裴彦良 +5 位作者 刘保华 赵月霞 刘晨光 解秋红 华清峰 邓声贵 《地球物理学报》 SCIE EI CAS CSCD 北大核心 2009年第9期2291-2301,共11页
发生于1969年的渤海M_s 7.4地震是渤海海域惟一一个主震被现代仪器记录的大地震,对其发震断层的讨论争议颇多.2005-2008年,我们在主震震区进行了3个航次的高分辨率声学探测,获得了包括浅层单道地震、侧扫声纳以及CHIRP剖面等在内的数百... 发生于1969年的渤海M_s 7.4地震是渤海海域惟一一个主震被现代仪器记录的大地震,对其发震断层的讨论争议颇多.2005-2008年,我们在主震震区进行了3个航次的高分辨率声学探测,获得了包括浅层单道地震、侧扫声纳以及CHIRP剖面等在内的数百公里综合地球物理观测资料.本文报道了对上述声学资料的研究结果研究表明,在震区海底之下2-3 m发现了一条走向NE30°、长20 km、宽约3 km的微型凹陷带,地质时代为5000 a B.P.,沉积面的最大下凹幅度为1.5 m;在空间位置上微型凹陷带与BZ28断裂、余震活动分布基本一致,因此,微型凹陷带是BZ28断裂活动的结果,而A层底界的下凹变形则是1969年渤海7.4级地震活动的结果,BZ28断裂是该地震的发震断层.BZ28断裂呈NE30°走向,是郯庐断裂带的次级断裂,浅层地震剖面揭示其最新活动时间为全新世中晚期,根据地质时代以及断层的垂向位移量,计算得到BZ28断裂晚更新世以来的垂向活动速率约为0.05 mm/a,全新世为0.3 mm/a,具有活动强度增加的趋势. 展开更多
关键词 1969渤海7.4级地震 发震断层 声学探测
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Preservation initiatives for the truncated pyramid-shaped traditional houses of Siirt, Turkey 被引量:1
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作者 Can Tuncay Akin Ayhan Bekleyen Mucahit Yildirim 《Frontiers of Architectural Research》 CSCD 2016年第3期360-370,共11页
The traditional houses of the residential areas in and around Siirt in the southeastern region of Turkey are notable because of their interesting forms. The most successful examples are the "truncated pyramidal-shape... The traditional houses of the residential areas in and around Siirt in the southeastern region of Turkey are notable because of their interesting forms. The most successful examples are the "truncated pyramidal-shaped houses" that have existed for centuries and are unique to the locality; however, these forms are demolished rapidly. In this study, the structures of small- scale settlements in Siirt province and its environs have been evaluated to highlight the cultural aspects of the region. The subject of this research is to investigate the design principles of the rural houses constructed in vernacular style to raise international awareness of the need to preserve vernacular architecture. Surviving examples have been examined in terms of multiple case approach by their forms, spatial compositions, changes in their forms over time, their layouts in urban and rural areas, the construction techniques used to produce them from material production through implementation, the composition of the living space and its uses, their differences or similarities to other houses in the region and their aesthetic details. The research reveals that the design principles of traditional rural architecture offer the use of local material and techniques in a unique way that promote highlights to the future. 展开更多
关键词 Truncated pyramidalshaped Traditional "cas" Houses Gypsum piaster Gypsum mortar Siirt TURKEY Cultural heritage
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