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| 1 | 青藏高原区域重磁异常的东西向分区及其构造地质特征显示文摘自从大陆整合以来作为一个整体的青藏高原继续受着印度板块向北俯冲的影响,也必定不断地改造着原各地体的结构构造,形成了高原整体意义上东西向的差异。这种差异与原本各地体的组成、结构和东西向延伸不一致。这不仅表现在南北向断裂构造跨各单个地体范围的出现,而且,逐步形成了东西的分区。这种分区突出地表现在区域重力与磁场的特征上,这不仅是局部的岩石磁性与密度变化的结果,而且是由于印度板块向北俯冲过程中,在其前缘的不同部位上经受的压力不同,以及地块的隆升与扩张作用的差异造成了高原东西各区段的地壳组分与厚度的变化。青藏高原的南北向断裂构造并非地壳上层的局部断裂,它具有深层的原因。由于印度板块向北推进的过程中不是均匀地齐头并进,而是在帕米尔高原以东的青藏高原范围内存在着推进速度和俯冲深度的差异,随着高原隆升的加剧高原本身出现断裂,自中新生代以来就存在着一定差异,所以南北向的断裂构造比目前地表见到的多些,而且具有较大的深度,Moho面的深度和地壳厚度都受南北向断裂的控制,并形成了区域重磁场的变化。同时,高原的东西向拉张作用也使南北断裂带发育加剧。 | 薛典军 姜枚 吴良士 李庆庆 汪兴旺 | 2006 | 中国地质2006，33，4： | 19 |
| 2 | 青海省德令哈北部宗务隆地区成矿特征与找矿远景分析显示文摘青海省德令哈北部地区位于宗务隆山晚古生代陆内拗陷带内,构造-岩浆活动十分强烈,宗务隆山群沿海西期NWW向拉分海槽分布,形成了'两隆夹一槽'总体格局,多处沿生长断裂形成喷流沉积岩的沉积作用,为本区喷流沉积成矿构成了有利条件。本文通过对区域地质背景、成矿构造环境、成矿地质特征及矿化分布规律的综合研究与分析,认为该区具有寻找喷流沉积型铅锌银矿床和矽卡岩型及热液脉型铜多金属矿床的有利条件,且矿化主要受宗务隆山群上亚群次级向斜两翼与向堑式下滑断裂控制,集中分布于两条NW向断裂之间,这为本区下一步开展矿产资源勘查评价和找矿靶区优选提供了科学依据,指明了地质找矿方向。 | 周杰斌 石菲菲 邹林 张普斌 张建国 | 2011 | 地质与勘探2011，47，2： | 12 |
| 3 | 2008、2009年大柴旦6.3级、6.4级地震序列活动特征及前兆异常显示文摘利用区域地震构造和震源机制解等资料初步探讨了大柴旦强震发震构造。结合德令哈2003年6.6级、2004年2~5月5次5级的地震序列分布特征,初步探讨了大柴旦两次强震的地震序列时间、空间分布特征,同时分析了区域历史地震活动特点。初步分析了近10年来两次8级地震对该地区的影响,并结合青海地区的前兆观测资料分析和讨论了前兆异常及其特点。 | 马玉虎 刘文邦 王培玲 杨晓霞 陈玉华 | 2012 | 中国地震2012，28，2： | 10 |
| 4 | 利用格林函数库计算2008年青海大柴旦6.4级地震的余震震源机制显示文摘通过建立格林函数库可以降低在矩张量反演过程中的计算量,提高获取中小地震震源机制解的速度。运用此方法对2008年11月10日青海大柴旦6.4级地震的地震序列中ML≥2.0的98个余震进行了震源机制解,在小震矩张量反演中克服了模拟资料无法准确得到小震震源机制解的缺陷,初步探索了运用区域数字地震台网资料确定中小地震震源机制解的方法,并对计算结果给出了解释。 | 刘薇 张晓清 石玉成 文勇 赵燕杰 | 2012 | 西北地震学报2012，34，2： | 9 |
| 5 | Seismotectonics of the 2008 and 2009 Qaidam Earthquakes and its Implication for Regional Tectonics显示文摘Three magnitude >6 earthquakes struck Qaidam, Qinghai province, China, in November 10th 2008, August 28th and 31st 2009 respectively. The Zongwulongshan fault has often been designated as the active seismogenic structure, although it is at odd with the data. Our continuous GPS station (CGPS), the Xiao Qaidam station, located in the north of the Qaidam basin, is less than 30 km to the southwest of the 2008 earthquake. This CGPS station recorded the near field co-seismic deformation. Here we analyzed the co-seismic dislocation based on the GPS time series and the rupture processes from focal mechanism for the three earthquakes. The aftershocks were relocated to constrain the spatial characteristics of the 2008 and 2009 Qaidam earthquakes. Field geological and geomorphological investigation and interpretation of satellite images show that the Xitieshan fault and Zongwulongshan fault were activated as left lateral thrust during the late Quaternary. Evidence of folding can also be identified. Integrated analyses based on our data and the regional tectonic environment show that the Xitieshan fault is the fault responsible for the 2008 Qaidam earthquake, which is a low dip angle thrust with left lateral strike slip. The Zongwulongshan fault is the seismogenic fault of the 2009 earthquakes, which is a south dipping back thrust of the northern marginal thrust system of the Qaidam basin. Folding takes a significant part of the deformation in the northern marginal thrust system of the Qaidam basin, dominating the contemporary structure style of the northern margin of the Qaidam basin and Qilianshan tectonic system. In this region, this fault and fold system dominates the earthquake activities with frequent small magnitude earthquakes. | CHEN Guihua XU Xiwei ZHU Ailan ZHANG Xiaoqing YUAN Renmao Yann KLINGER Jean-Mathieu NOCQUET | 2013 | Acta Geologica Sinica(English Edition)2013，87，2： | 5 |
| 6 | Fine relocation, mechanism, and tectonic indications of middle-small earthquakes in the Central Tibetan Plateau显示文摘The medium-small earthquakes that occurred in the middle part of Tibetan Plateau(32°N–36°N, 90°E–93°E) from August 2016 to June 2017 were relocated using the absolute earthquake location method Hypo2000. Compared to the reports of Chinese Seismological Networks, our relocation results are more clustered on the whole, the horizontal location differences exceed 10 km, and the focal depths are concentrated in 0–8 km, which indicates that the upper crust inside the Tibetan Plateau is tectonically active. In June2017 altogether eight earthquakes above magnitude 3.0 took place; their relocated epicenters are concentrated around Gêladaindong.The relocation results of M<3.0 small earthquakes also showed obvious differences. Therefore, we used the CAP method to invert for the focal mechanisms of the M ≥3.0 earthquakes; results generally tally with the surface geological structures, indicating that the Tibetan Plateau is still under the strong compressional force from the India Plate. Among them the eight earthquakes that occurred near Gêladaindong in June 2017 are all of normal fault type or with some strike-slip at the same time; based on previous research results we conjecture that these events are intense shallow crust responses to deep crust-mantle activities. | YuLan Li BaoShan Wang RiZheng He HongWei Zheng JiangYong Yan Yao Li | 2018 | Earth and Planetary Physics2018，2，5： | 4 |
| 7 | 2013年德令哈郊区M_L4.5震群特征及发震背景研究显示文摘2013年3月底至4月初青海省德令哈郊区连续发生了数次ML4.5左右的地震,市区震感强烈。利用双差定位法对该震群进行重新定位,发现震群空间分布呈近NS向,深度集中于4~10km的地表浅层,纵向深度剖面呈"斗状"断层特征;利用CAP(Cut and Paste)方法反演了震群中ML≥3.3地震的震源机制解,结果为走滑类型,震群特征与附近的主构造宗务隆山断裂带性质不符。地质勘探发现凹陷或盆地边缘主构造附近通常存在横向伴生断裂,这些断裂规模不大,以走滑性质为主。本次震群位于柴达木盆地北边缘,通过相似构造的对比,认为该区附近同样满足横向断裂存在的条件。由于本次震群各项特征与横向断层的构造理论十分相符,推断出该震群应该是这种微小断裂活动的结果,横向断裂通常规模不大,因此可判断出震群震源区未来发生强震的可能性较小。 | 姚家骏 马玉虎 赵燕杰 袁伏全 冯红武 | 2014 | 地震2014，34，4： | 2 |
| 8 | Seismic Sequence Characteristics and Precursory Anomalies of the M_S6.3 and M_S6.4 Da Qaidam Earthquakes in 2008~2009显示文摘In this paper,the seismogenic structures of the Da Qaidam strong earthquakes are preliminarily discussed by using the regional seismotectonic data and focal mechanism solutions. Analysis is done on the temporal and spatial distribution characteristics of the two strong earthquake sequences in Da Qaidam in combination with the sequence distribution characteristics of the M6. 6 earthquake of 2003 and the five strong earthquakes of about M5. 0 in 2004 in Delingha. At the same time,the regional characteristics of the historical seismic activity are also investigated. Preliminary analysis is done on the influence of the two M8. 0 earthquakes in the past 10 years on this region. Precursory anomalies and their characteristics are discussed in combination with the analysis of the precursor observation data of Qinghai Province. | Ma Yuhu Liu Wenbang Wang Peiling Yang Xiaoxia Chen Yuhua | 2013 | Earthquake Research in China2013，27，2： | 0 |
| 9 | 2009年青海大柴旦M_S6.4地震前中小地震震源机制前兆特征分析显示文摘2009年8月28日青海省大柴旦MS6.4地震发生前,在震中附近发生了30多个1.0≤ML≤3.9地震。针对这些中小地震,采用青海省区域地震台网观测资料,利用矩张量反演理论和格林函数库技术对主震及震前中小地震进行快速矩张量反演,计算出了其中15个ML≥1.5地震的震源机制解。结果表明,主震发生前中小地震震源参数的一致性较好,断层面走向、倾角的一致性达到86%,其初至P波波形相关系数也较高。中小地震应力P、T轴的优势方向与该区域应力场方向基本一致。 | 余娜 | 2014 | 地震研究2014，37，S1： | 0 |
| 10 | 青藏高原中部中小地震的精定位、震源机制及构造背景分析显示文摘利用绝对地震定位方法(Hpyo2000)对青藏高原中部地区(32°N~36°N,90°E~93°E)于2016年6月至2017年6月期间发生的中小地震进行了重定位。与中国地震台网测定结果相比,定位后结果整体上更加聚集,水平位差距超过10km,深度上集中在0~8km范围内,这表明青藏高原内部上地壳构造活跃。2017年6月共发生8次3.0级以上地震,定位后的震中位置集中分布在格拉丹东附近。定位前后M<3.0的小地震的结果也显示明显的差异。为此,我们采用CAP(Cut and Paste)方法反演了M≥3.0地震的震源机制,结果显示其与地表构造性质较为吻合,青藏高原内部仍受到印度板块强烈的挤压作用。其中2017年6月格拉丹东附近发生的8次地震均为正断或走滑兼正断型,根据前人研究结果,猜测这是壳幔活动剧烈的地表响应。 | Y.L.Li B.S.Wang R.Z.He H.W.Zheng J.Y.Yan Y.Li 李娱兰(译) 郑洪伟(校) 贺日政(校) | 2019 | 世界地震译丛2019，50，3： | 0 |
| 11 | 利用单台波形资料计算大柴旦6.3级地震余震震源机制显示文摘以2008年11月10日大柴旦Ms6.3级地震余震数字地震波观测资料为基础,运用矩张量反演方法,利用单台三分量波形资料计算余震的震源机制。收集整理大柴旦Ms6.3级地震公认的震源参数结果和青海区域地震台网数字地震波资料,以大柴旦Ms6.3级地震的震源参数作为约束,计算理论地震波来确定该区域的地壳速度模型。以此模型计算ML≥2.0级余震震源机制解。共收集160个余震资料,最后确定了85个余震震源机制解,其中最大震级为ML4.7,最小震级为ML2.0。进行单台与多台联合矩张量反演结果对比,两种方法所确定的结果相差不大。实际计算表明,在观测资料信噪比较高的情况下,运用单台数字地震波观测资料可以较好地确定中小地震的震源机制。 | 张晓清 何春晖 张晶 刘薇 马震 文勇 | 2012 | 高原地震2012，24，4： | 0 |
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