吐鲁番盆地地震地质初步研究   总被引：2，自引：1，他引：2  

冯先岳  赵瑞斌 《内陆地震》1994,8(2):97-108

吐鲁番盆地是海西期褶皱基底上发生、发展起来的沉积盆地．晚新生代以来，盆地演化为单侧冲断推覆型压性盆地。盆地本世纪内地震活动水平整体上是较低的，但区内断裂、褶皱活动自晚更新世晚期以来就一直进行着。盆地中央断裂带经开挖研究认为，全新世以来有３次古地震活动事件，其大震复现间隔为３０００年左右．由于最后一次大震发生距今已有约２５００年，所以盆地中央潜在大震的危险。  相似文献   

中国新疆北天山的活动逆断裂褶皱带及其大地震的位置预测(英)     

杨晓平  邓起东  冯先岳  张培震  徐锡伟  李军  赵瑞斌 《内陆地震》1997,(4)

发育在北天山山麓的活动断裂褶皱带属于向前扩展的薄皮构造，且所有的背斜都是断裂扩展褶皱，主滑脱面距地表8～9km深。距今292万年以来，地壳缩短13．5～14．6km，缩短率是4.62～5．0mm／a。自30000年前至今，准噶尔南缘断裂和齐古道断裂褶皱带的活动十分微弱，而独山子和玛纳斯道断裂-褶皱带则是活动褶皱-断裂带。北天山地区普遍发育三级阶地,受活动逆断裂和褶皱的影响，均产生褶曲变形和错断。距今12000～13000年以来，吐谷鲁逆断裂-背斜的垂直滑动速率、抬升速率、缩短速率分别是0．83～0．91、3.46～3.75和1.23～1．33mm／a。1906年的玛纳斯地震发生在一条盲断坡上，但是其同震破裂和褶皱隆升却出现在玛纳斯逆断裂-褶皱带上，震中距玛纳斯逆断裂-褶皱带约40km。揭示出北天山挤压拗陷区的孕震构造是一个由深部盲断坡-滑脱断层-浅层断坡构成的复杂构造系统。通过上述活动构造和古地震研究的结果可以推测，天山北麓未来发生大震（M≥7．0）的位置可能是在呼图壁河至金沟河段和金沟河至奎屯河段的齐古道断裂-褶皱带上，其震级相当于1906年玛纳斯地震。乌鲁木齐挤压坳陷中的活动逆断裂褶皱带上只有发生M≤6．0地震的可能性。  相似文献   

乌鲁木齐市城市防震减灾对策系统   总被引：2，自引：0，他引：2  

柔洁  赵瑞斌  宋立军 《内陆地震》1999,(1)

乌鲁木齐市处于地震活动频繁的天山地震带中段,城市地震灾害的潜在危险与日俱增。为了响应联合国关于“国际减轻自然灾害１０ 年”活动的号召和近期内中国实现大中城市的减灾目标,在乌鲁木齐市建立了震害预测及防震减灾对策系统。阐述了乌鲁木齐的地震环境,介绍了防震减灾对策系统的主要内容,讨论了今后面临的问题及防震减灾对策系统的前景  相似文献   

天山南北两侧山前坳陷带中新生代构造特征与地震   总被引：25，自引：5，他引：20       下载免费PDF全文

赵瑞斌  杨主恩  周伟新  郭芳 《地震地质》2000,22(3):295-304

形成于中新生代的南天山库车山前坳陷带和北天山乌鲁木齐山前坳陷带表现出类似的几何学、运动学和动力学特征 ,即坳陷内都发育 4排近东西向展布的逆断裂 -背斜带 ;新生代 (特别是第四纪以来 )表现出强烈的由山体向盆地的逆冲活动 ;逆断裂 -背斜带的形成、演化和发展都受控于统一的近南北向构造应力场。然而 ,南北两个山前坳陷在变形强度、地球物理细结构、地球动力学环境等方面存在着明显的不同。对这些不同点进行了讨论 ,认为正是这些不同点的存在 ,使得天山南北两侧山前坳陷内的现今地震活动性显示出不对称性 ,即南天山库车山前坳陷 5级以上地震基本都分布在第 3排 (秋里塔格 )逆断裂 -背斜带上 ,而北天山乌鲁木齐山前坳陷 5级以上地震基本都分布在坳陷南部准噶尔南缘断裂附近及其以南的天山内部  相似文献   

珙县低山区不同震源作用下斜坡地震动响应     

吴昊宸  王运生  胡东雨  赵方彬  寇瑞斌  毕杨杨  唐涛 《大地测量与地球动力学》2022,42(10):1034-1040

在宜宾市珙县五同村布设斜坡地震动监测仪器,采集兴文县3.1级、珙县4.5级及长宁县4.6级地震数据。对监测剖面上1^#、2^#监测点采集到的珙县余震地震动响应数据进行滤波和校正处理,对比分析震级、高程、方位等因素对斜坡造成的地震响应后认为：1）当地震波的半波长与山体某些特定部位之间的距离接近时,斜坡地形与地震波的波峰产生耦合作用,地形放大效应显著,达到参考点的2.765倍,此处山体更容易产生较大幅度的摇晃,造成山体地质灾害;2）分析珙县4.5级与长宁县4.6级地震得出,当地震波沿特殊部位（如山脊等）传播时,地震加速度及阿里亚斯强度更加显著;3）分析地震加速度变化得出,在地震荷载作用下,随着震级的增大,斜坡的加速度响应也会增大;4）随着高程和震级的变化,监测点的地震加速度和阿里亚斯强度随之变化,高程和震级对斜坡的地震动响应具有放大效应;5）在高程和微地貌的耦合作用下,斜坡地震加速度也具有明显的放大效应。  相似文献   

Another Important Factor of Rising Sea Level: Soil Erosion     

Ruibin Zhang  Jun He  Yanwen Zhao  Yao Peng  Li Fu 《洁净——土壤、空气、水》2013,41(2):174-178

Global mean sea level is a sensitive factor of climate change. Global warming will contribute to worldwide sea‐level rise from thermal expansion of ocean water, melting of glaciers and polar ice. Consideration of global soil erosion, water vapor cycle, and hydraulic actions suggests that soil erosion is another important factor contributing to sea‐level rise in addition to global warming. Much terrestrial sediment flows into the rivers each year but cannot be replenished, resulting in land surface declines. Moreover, sediment flow into rivers and oceans contributes to rising sea level. Ecological protection measure was proposed to prevent rising sea levels caused by soil erosion. This commentary should be useful to attract attention on rising sea levels caused by soil erosion.  相似文献   

Experimental study on hysteresis behaviors of foamed-aluminum filled square steel tubular columns     

WANG Ruibin  TU Yongqing 《世界地震工程》2008,24(3)

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滨州市耕地保护现状及措施研究   总被引：1，自引：1，他引：0       下载免费PDF全文

张光永  范瑞彬 《山东国土资源》2008,24(11)

1 滨州市耕地资源利用现状及特点 1．1 耕地总量大,人均多 滨州市地处黄河三角洲腹地,土地资源丰富。2006年,全市农用地625357hm^2,占土地总面积的66％,其中耕地437952hm^2,占农用地的70％,在耕地中,水浇地面积369862hm^2,占耕地面积的84．4％,是最主要的耕地类型;旱地次之,占耕地面积的13．7％。  相似文献   

Intercomparison of NO<Subscript><Emphasis Type="Italic">x</Emphasis></Subscript>, SO<Subscript>2</Subscript>, O<Subscript>3</Subscript>, and aromatic hydrocarbons measured by a commercial DOAS system and traditional point monitoring techniques   总被引：1，自引：1，他引：0  

XIE Pinhu  LIU Wenqing  FU Qiang  WANG Ruibin  LIU Jianguo  WEI Qingnong 《大气科学进展》2004,21(2):211-219

A field-based intercomparison study of a(DOAS) instrument (OPSIS AB, Sweden) andcommercial Differential Optical Absorption Spectroscopydifferent point-sample monitoring techniques (PM, basedon an air monitoring station, an air monitoring vehicle, and various chemical methods) was conducted inBeijing from October 1999 to January 2000. The mixing ratios of six trace gases including NO, NO2, SO2,03, benzene, and toluene were monitored continuously during the four months. A good agreement betweenthe DOAS and PM data was found for NO2 and SO2. However, the concentrations of benzene, toluene,and NO obtained by DOAS were significantly lower than those measured by the point monitors. Theozone levels monitored by the DOAS were generally higher than those measured by point monitors. Theseresults may be attributed to a strong vertical gradient of the NO-O3-NO2 system and of the aromatics atthe measurement site. Since the exact data evaluation algorithm is not revealed by the manufacturer ofthe DOAS system, the error in the DOAS analysis can also not be excluded.  相似文献   

On the Response of Subduction in the South Pacific to an Intensification of Westerlies and Heat Flux in an Eddy Permitting Ocean Model     

Chengyan LIU  Zhaomin WANG  Bingrui LI  Chen CHENG  Ruibin XIA 《大气科学进展》2017,34(4):521-531

Based on an eddy permitting ocean general circulation model, the response of water masses to two distinct climate scenarios in the South Pacific is assessed in this paper. Under annually repeating atmospheric forcing that is characterized by different westerlies and associated heat flux, the response of Subantarctic Mode Water(SAMW) and Antarctic Intermediate Water(AAIW) is quantitatively estimated. Both SAMW and AAIW are found to be warmer, saltier and denser under intensified westerlies and increased heat loss. The increase in the subduction volume of SAMW and AAIW is about 19.8 Sv(1 Sv =10~6m~3s~(-1)). The lateral induction term plays a dominant role in the changes in the subduction volume due to the deepening of the mixed layer depth(MLD). Furthermore, analysis of the buoyancy budget is used to quantitatively diagnose the reason for the changes in the MLD. The deepening of the MLD is found to be primarily caused by the strengthening of heat loss from the ocean to the atmosphere in the formation region of SAMW and AAIW.  相似文献