权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Inland large scale active faults ruptured with great earthquake in historical time and associated crustal movements

历史上大地震和相关地壳运动导致内陆大规模活动断层破裂

基本信息

批准号：
06452381
负责人：
OKADA Atsumasa
金额：
$ 2.37万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

项目摘要

Inland large scale active faults, which have produced great earthquakes in historical time, well distribute in Kinki area, and accompany clear fault topography. The morphology, detailed location, geology etc.of these faults have been described in detail. and related crustal movements have been clearified. As the lake and alluvial lowlands develop in down-thrown sid of active faults, core samples of these deposits were analyzed by using tephro-chronological and other dating methods for getting the time scale of faulting and crustal deformation. especially in the bottoms of Beppu Bayand Lake Biwa.Detailed field observations for the seismic faults have been described by many researchers and compiled as a list with precise location maps (scale 1 : 2,500). Distribution of major surface faults, amount of displacement. cumulative topographic expression etc.were summarized by these surveys. The excavation study for the Nojima fault has been aimed principally at revealing ages of faulting event and recurrence intervals at Nashimoto. Hokudan Town. Awai Island.The Rokko-Awaji active fault system. which produced the 1995 Hyogoken Nanbu carthquake.has been surveyed in the field.and their fault activity and character were analyzed by the geomorphological. sedimentological and dating methods. Many drilling surveys were carried out along the lowland. And the activity and behaviors of faulting for these active faults were clarified by investigating the lithology and dating for the core samples obtained. The activity during the late Quaternary has been clarified with relation to the terracc choronology. The distribution of active faults bencath the alluvial plainalong the south side of the Rokko Mountains has been mapped by photo-interpretation. seismic reflection.and driling surveys.

历史上曾发生过大地震的内陆大型活动断层在近基地区分布良好，断层地形清晰。对这些断层的形态、详细位置、地质等进行了详细的描述。并且相关的地壳运动已经被澄清。由于活动断裂下倾侧面发育湖泊和冲积低地，因此对这些矿床的岩心样品进行了分析，并采用温度年代学等测年方法获得了断裂和地壳变形的时间尺度。尤其是别府湾和琵琶湖的底部。许多研究人员对地震断层进行了详细的实地观察，并编制了精确的位置图（比例为1:25 500）。地表主要断层的分布、位移量。通过这些调查，总结了累积地形特征等。野岛断裂的开挖研究主要是为了揭示断裂事件的年龄和内本断裂的复发期。Hokudan小镇。Awai岛。六子- awaji活动断层系统。造成了1995年的小庙南部地震。在实地进行过调查。并从地貌学角度分析了其断层活动性和特征。沉积学和测年方法。沿着低地进行了许多钻探调查。通过岩心岩样的岩性研究和年代测定，明确了这些活动断层的活动特征。通过与地坪年代学的联系，明确了晚第四纪的活动。利用照片解译技术，绘制了六甲山南侧冲积平原下活动断层的分布图。地震反射。以及钻探调查。