检索结果-南通市图书馆

Crustal Structure Revealed by a Deep Seismic Sounding Profile of Baijing-Gaoming-Jinwan in the Pearl River Delta

Journal of Ocean University of China 2018年第1期17卷 186-194页

作者： ZHANG Xiang ye xiuwei LV Jinshui SUN Jinlong WANG Xiaona CAS Key Laboratory of Ocean Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China University of Chinese Academy of Sciences Beijing 100049China Guangdong Earthquake Agency China Earthquake AdministrationGuangzhou 510070China

The Pearl River Estuary area, located in the middle part of the southern China coastal seismic belt, has long been considered a potential source of strong earthquakes above magnitude 7.0. To scientifically assess the potential strong earthquake risk in this area, a three-dimensional artificial seismic sounding experiment, consisting of a receiving array and seabed seismograph, was performed to reveal the deep crustal structure in this region. We used artificial ship-borne air-gun excitation shots as sources, and fixed and mobile stations as receivers to record seismic data from May to August 2015. This paper presents results along a line from the western side of the Pearl River Estuary to the western side of the Baijing-Gaoming-Jinwan profile. A two-dimensional velocity structure was constructed using seismic travel-time tomography. The inversion results show that the Moho depth is 27 km in the coastal area and 30 km in the northwest of the Pearl River Estuary area, indicating that the crust thins from land to sea. Two structural discontinuities and multiple low-velocity anomalies appear in the crustal section. Inside both discontinuity zones, a low-velocity layer, with a minimum velocity of 6.05 km s^(-1), exists at a depth of about 15 km, and another, with a minimum velocity of 6.37 km s^(-1), exists at a depth of about 21.5 km between the middle and lower crust. These low velocities suggest that the discontinuities may consist of partly molten material. Earthquakes with magnitudes higher than 5.0 occurred in the low-velocity layer along the profile. The deep Kaiping-Enping fault, rooted in the crust, may be one of the most important channels for deep material upwelling and is related to tectonic movement since the Cretaceous in the Pearl River Delta tectonic rift basin.

关键词： Pearl River Estuary seismic sounding profile crustal structure Kaiping-Enping fault earthquake potential

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

3D P-wave Velocity Structure and Active Tectonics in the Xinfengjiang Area of Guangdong

引用

Earthquake Research in China 2017年第4期31卷 441-454页

作者： ye xiuwei Huang Yuanmin Liu Jiping Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology Earthquake Administration of Guangdong ProvinceGuangzhou 510070China

In this paper,we determined an earthquake sequence location in the Xingfengjiang area from June,2007 to July,2014 and the 3 D P-wave velocity structure by a simultaneous inversion method. On that basis,we studied the occurrence features of active tectonics and the earthquake source mechanism. The results show that the reservoir fracture system has a tendency to increase with gradual depth from southeast to northwest,consistent with gravitational field research results. There are 4 high velocity zones( HVZ) under the depth of the 7 km-12 km crust between the Xinfengjiang Reservoir dam and Xichang District,Dongyuan. The max velocity of the biggest HVZ which is under Xichang is 6. 3 km/s. Under the reservoir dam there is a strong tectonic deformation zone,as the center exit Renzishi fault( F_2),Nanshan-Aotou faults( F_4),Heyuan fault( F_1) and Shijiao-Xingang-Baitian fault( F_5),7 earthquakes with M_L≥ 5. 0( including M 6. 1 in March,1962) occurred at the high gradient zone of the HVZ Ⅲ and HVZ Ⅳ edge which has been under the reservoir dam since 1960, with relativity energy releasing more thoroughly. Moderate seismic activity occurred at the HVZ Ⅰ edge which has been under Xichang since 2012,and is a danger zone for M5. 0 earthquakes in the future.

关键词： P-wave velocity structure Active tectonics Simultaneous inversion method The Xinfengjiang reservoir

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Tomographic inversion of OBS converted shear waves:case study of profile EW6 in the Dongsha area

引用

Acta Oceanologica Sinica 2024年第8期43卷 13-25页

作者： Genggeng Wen Kuiyuan Wan Shaohong Xia xiuwei ye Huilong Xu Chaoyan Fan Jinghe Cao Shunshan Xu CEA Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology Guangdong Earthquake AgencyGuangzhou 510070China Guangdong Science and Technology Collaborative Innovation Center for Earthquake Prevention and Disaster Mitigation Guangzhou 510070China MOE Key Laboratory of Disaster Forecast and Control in Engineering-Urban Earthquake Safety Laboratory Guangzhou 510070China CAS Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China 6 Centro de Geociencias Universidad Nacional Autónoma de MéxicoQuerétaroC.P.76230Mexico

Studies of converted S-wave data recorded on the ocean bottom seismometer(OBS)allow for the estimation of crustal S-wave velocity,from which is further derived the Vp/Vs ratio to constrain the crustal lithology and geophysical *** a precise S-wave velocity model is important for deep structural research,and inversion of converted S-waves provides a potential ***,the inversion of the converted S-wave remains a weakness because of the complexity of the seismic ray path and the inconsistent conversion *** this study,we introduced two travel time correction methods for the S-wave velocity inversion and imaged different S-wave velocity structures in accordance with the corresponding corrected S-wave phases using seismic data of profile EW6 in the northeastern South China Sea(SCS).The two inversion models show a similar trend in velocities,and the velocity difference isyer has high velocities,the near offset crustal S-wave refractions cannot be *** contrast,the ray tracing of Moho S-wave reflections was not significantly impacted by the velocity of the *** two travel time correction methods have their own advantages,and the application of different approaches is based on additional *** works provide an important reference for future improvements in converted S-wave research.

关键词： converted S-wave S-wave velocity structure inversion ocean bottom seismometer northeastern South China Sea

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Interpretation of the west segment of the coastal fault zone in the coastal region of South China based on the gravity data

引用

Geodesy and Geodynamics 2018年第2期9卷 142-150页

作者： Lisi Bi Zhenhuan Ren xiuwei ye Tianyou Liu Jihua Qiao Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology Guangdong Earthquake Administration Guangdong Provincial Key Laboratory of Earthquake Early Warning and Safety Diagnosis of Major Projects China University of Geosciences Development Research Center of China Geological Survey

By systemic processing, comprehensive analysis, and interpretation of gravity data, we confirmed the existence of the west segment of the coastal fault zone(west of Yangjiang to Beibu Bay) in the coastal region of South China. This showed an apparent high gravity gradient in the NEE direction, and worse linearity and less compactness than that in the Pearl River month. This also revealed a relatively large curvature and a complicated gravity structure. In the finding images processed by the gravity data system, each fault was well reflected and primarily characterized by isolines or thick black stripes with a cutting depth greater than 30 km. Though mutually cut by NW-trending and NE-trending faults, the apparent NEE stripe-shaped structure of the west segment of the coastal fault zone remained unchanged,with good continuity and an activity strength higher than that of NW and NE-trending faults. Moreover,we determined that the west segment of the coastal fault zone is the major seismogenic structure responsible for strong earthquakes in the coastal region in the border area of Guangdong, Guangxi, and Hainan.

关键词： Coastal region of South China West segment of the coastal fault zone Gravity data Seismogenic structure

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Dissecting the cell microenvironment of ovarian endometrioma through single-cell RNA sequencing

引用

Science China Life Sciences 2025年第1期68卷 116-129页

作者： Jiangpeng Wu Siyu Xia Wenting ye Yan Sun Jing Cai Fubing Yu Haiping Wen xiuwei Yi Taikang Li Mingwei Chen Jiayun Chen Ge Song Chuanbin Yang Yali Song Jigang Wang Department of Reproductive Medicine Dongguan Maternal and Child Health Care Hospital Department of Urology and Shenzhen Clinical Research Centre for GeriatricsShenzhen People's HospitalSouthern University of Science and Technology State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs Artemisinin Research Centerand Institute of Chinese Materia MedicaChina Academy of Chinese Medical Sciences Reproductive Medicine Center Foshan Women and Children Hospital State Key Laboratory of Antiviral Drugs School of PharmacyHenan University

Ovarian endometrioma（OE）, also known as “chocolate cysts,” is a cystic mass that develops in the ovaries due to endometriosis and is a common gynecological condition characterized by the growth of endometrial tissue outside the uterus, leading to symptoms such as dysmenorrhea, pelvic pain, and infertility. However, the precise molecular and cellular mechanisms driving this pathophysiology remain largely unknown, posing challenges for diagnosis and treatment. Here, we employed integrated single-cell transcriptomic profiling of over 52,000 individual cells from endometrial tissues of OE patients and healthy donors and identified twelve major cell populations. We identified notable alterations in cell type-specific proportions and molecular signatures associated with OE. Notably, the activation of IGFBP5+macrophages with pro-inflammatory properties, NK cell exhaustion, and aberrant proliferation of IQCG+and KLF2+epithelium are key features and may be the potential mechanisms underlying the pathogenesis of OE. Collectively, our data contribute to a better understanding of OE at the single cell level and may pave the way for the development of novel therapeutic strategies.

关键词： ovary high-throughput sequencing transcriptomics gene expression analysis ligand-receptor analysis

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

2018年11月26日台湾海峡M_S6.2地震发震构造研究

引用

地球物理学报 2019年第12期62卷 4673-4683页

作者：王小娜叶秀薇黄元敏王力伟广东省地震局广州510070 广东省地震局中国地震局地震监测与减灾技术重点实验室广州510070 广东省地震局广东省地震预警与重大工程安全诊断重点实验室广州510070

本文利用福建省地震台网、广东省地震台网和台湾“中央”气象局17个台的宽频带记录,使用CAP方法反演了2018年11月26日台湾海峡M S6.2地震震源机制解,得到节面1走向/倾角/滑动角为89°/82°/-173°,节面2走向/倾角/滑动角为358°/84°/-7... 详细信息

本文利用福建省地震台网、广东省地震台网和台湾“中央”气象局17个台的宽频带记录,使用CAP方法反演了2018年11月26日台湾海峡M S6.2地震震源机制解,得到节面1走向/倾角/滑动角为89°/82°/-173°,节面2走向/倾角/滑动角为358°/84°/-7°,最佳拟合深度14 km,矩震级5.8.使用双差定位获取了94个M L2.0以上地震的精定位结果,结果显示,主震位于北纬23.36°,东经118.62°,震源深度10.43 km.根据小震分布和构造应力场反演得到余震断层面走向和倾角分别为88°和60°.研究认为,台湾海峡6.2级地震发震构造为近EW向的台湾浅滩断裂,受南海板块张裂拉伸发育而成,孕震过程中有东山隆起东缘断裂的参与,推测在菲律宾板块对欧亚板块NW-SE向挤压碰撞背景下,近EW向的台湾浅滩断裂与近NS向的东山隆起东缘断裂交接部位属于强度薄弱区,最终产生高倾角右旋走滑错动而引发地震,余震主要沿台湾浅滩断裂分布.

关键词：台湾海峡M S6.2地震震源机制解双差定位台湾浅滩断裂

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

地下流体地震前兆多层次跟踪法在华南及沿海地区的应用

引用

华南地震 1999年第2期19卷 13-19页

作者：叶秀薇广东省地震局广州510070

利用多层次跟踪法，对８０年代以来华南及沿海地区发生的９次大于ＭＳ５０级和２次陆区接近ＭＳ５０级地震的发震时间进行了系统验证。在１１个震例中预测时段正确的有：中期１０个、短期５个和短临２个，

关键词：地震预报地震前兆发震时刻地下流体华南地区

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

噪声HVSR法在OBS探测中的应用——以珠江口外海OBS台阵为例

引用

地球物理学报 2023年第7期66卷 2951-2960页

作者：熊成叶秀薇张严心吕作勇王力伟广东省地震局中国地震局地震监测与减灾技术重点实验室广州510070

噪声谱比法(horizontal-to-vertical spectral ratio,HVSR)通常用于确定沉积层的厚度,而应用于海底地震仪(OBS)以获取海底沉积厚度的研究较少.本文将HVSR法应用于珠江口外海域OBS台阵中,验证了该方法用于OBS探测中的可靠性.通过对珠江... 详细信息

噪声谱比法(horizontal-to-vertical spectral ratio,HVSR)通常用于确定沉积层的厚度,而应用于海底地震仪(OBS)以获取海底沉积厚度的研究较少.本文将HVSR法应用于珠江口外海域OBS台阵中,验证了该方法用于OBS探测中的可靠性.通过对珠江口外海27台OBS收集的三分量地震噪声记录进行处理,得到了所有台站的HVSR曲线.有23台OBS的HVSR曲线可获取与沉积层厚度相关的峰值频率,通过经验公式可以计算得到沉积层厚度.结果显示,珠江口外海域沉积层(新生代地层)厚度范围为100~3500 m,研究区东南部沉积层远厚于西北部,且沉积厚度受到NEE向滨海断裂带控制.本文获得的结果与以往依靠反射地震剖面和钻井等获得的沉积层厚度结果基本一致.进一步分析发现研究区新生代地层具有多层结构,大部分HVSR曲线在5~12 Hz存在振幅最大的波峰,认为是与第四系厚度相关的峰值频率,继而确定第四系厚度为20~50 m.本研究拓展了HVSR法的应用领域,为获取海底沉积层厚度提供了一种新的可靠方法.

关键词：噪声谱比法海底地震仪沉积厚度珠江口外海

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

广东阳江地震序列双差法重新定位结果分析

引用

大地测量与地球动力学 2009年第6期29卷 60-63页

作者：叶秀薇刘锦胡秀敏广东省地震局广州510070

利用双差定位法对阳江地区2004年1月—2007年5月ML≥1.5地震记录重新进行定位,结果显示,2004年9月17日阳江平冈4.9级地震前,阳江地区出现了北北西向及北西向两条ML≥2.0地震条带,其中北北西向条带与4.9级地震的震源机制解节面Ⅱ及断层... 详细信息

利用双差定位法对阳江地区2004年1月—2007年5月ML≥1.5地震记录重新进行定位,结果显示,2004年9月17日阳江平冈4.9级地震前,阳江地区出现了北北西向及北西向两条ML≥2.0地震条带,其中北北西向条带与4.9级地震的震源机制解节面Ⅱ及断层破裂方位角方向一致,且在震前1月北北西向条带上的地震出现震源深度加深现象,4.9级地震发生在条带的东南端。

关键词：双差定位阳江地震地震条带震源深度震源机制解

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

广东东源M_S4.8地震序列震源位置及周边地区P波三维速度结构

引用

地震学报 2013年第6期35卷 809-819,938页

作者：叶秀薇黄元敏胡秀敏刘锦广东省地震局中国广州510070 中国地震局地震监测与减灾技术重点实验室中国广州510070

利用震源位置和速度结构的联合反演,得到2012年2月16日广东东源MS4.8地震序列的震源位置及震源区速度结构模型,并进一步采用双差定位法对该序列位置重新定位.结果显示,东源MS4.8地震是一次自上而下、自西向东的单侧破裂过程,破裂面积约... 详细信息

利用震源位置和速度结构的联合反演,得到2012年2月16日广东东源MS4.8地震序列的震源位置及震源区速度结构模型,并进一步采用双差定位法对该序列位置重新定位.结果显示,东源MS4.8地震是一次自上而下、自西向东的单侧破裂过程,破裂面积约3km×5km.震源区地壳结构复杂,埋深712km处为一个速度达6.2km/s的高速体,主震的起始破裂位置位于高速体的顶部速度梯度较大的区域,破裂面穿越整个高速体,余震止于高速体下方的低速区底部(埋深约16km).东源县锡场镇下方的这种高、低速相间的结构,表明地壳层间相邻物质性状的差异利于应变能的积累和释放,因此东源地区具备发生中强地震的构造条件.

关键词：东源M4 8地震联合反演速度结构双差定位

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：