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Micro-Earthquake Seismicity and Tectonic Significance of the 2012 Ms 4.9 Baoying Earthquake,Jiangsu,China

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Journal of Earth Science 2023年第3期34卷 900-910页

作者： Yanzhen Li Hongyi Li yafen huang Shengzhong Zhang Yuejun Lü School of Geophysics and Information Technology China University of GeosciencesBeijing 100083China Information Network Center China University of GeosciencesBeijing 100083China National Institute of Natural Hazards MEMCBeijing 100085China

On July 20,2012,the Ms 4.9 Baoying Earthquake occurred near the junction of Baoying County and Gaoyou City in Jiangsu Province,eastern *** to no obvious surface rupture and limited observation of earthquake sequence,the seismogenic structure of the Ms 4.9 Baoying Earthquake is still *** this study,80 earthquakes provided by China Earthquake Network Center(CENC)are first relocated;and then the relocated 75 events with high signal-to-noise ratios as templates are utilized to scan through continuous waveform data(July 11 to August 31,2012)using graphics processing unit-based match and locate(GPU-M&L)*** the Deep Denoiser,a deeplearning-based noise reduction technique,is used to further confirm some newly detected events;and the double-difference relocation(Hypo DD)algorithm is used to relocate the *** detect and relocate more than twice as many events as the CENC routine catalog,which includes 15 foreshocks and 230 *** results show that the foreshocks are mainly distributed in the NW direction along the extended SE section of the blind Xiagonghe fault(XF),which is orthogonal to the strike of the seismogenic fault of the Ms 4.9 Baoying Earthquake(Yangchacang-Sangshutou fault,named YSF).Most of the aftershocks are generally distributed along the NNE-trending YSF and illuminate a steeply dipping *** study reveals detailed spatiotemporal evolution of the earthquake sequence and suggests that the buried XF extends southeastward and cuts through the NNE-trending seismogenic YSF.

关键词： 2012 Ms 4.9 Baoying Earthquake micro-earthquake seismicity tectonics GPU-M&L Hypo DD Deep Denoiser

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东昆仑断裂带东段微震检测与构造分析

震灾防御技术 2024年第2期19卷 276-287页

作者：马胜男李红谊黄雅芬马玉虎马建新中国电子科技集团公司第三研究所北京100015 中国地质大学(北京)地球物理与信息技术学院北京100083 青海省地震局西宁810001

本文整理了一套包括微震检测、地震去噪、震相拾取和地震定位的构建高精度地震目录数据的处理流程。收集了青海省内东昆仑断裂带东段20个数字地震台站记录的2009−2018年的连续地震数据,并应用该流程进行微震检测、去噪和定位。首先,从... 详细信息

本文整理了一套包括微震检测、地震去噪、震相拾取和地震定位的构建高精度地震目录数据的处理流程。收集了青海省内东昆仑断裂带东段20个数字地震台站记录的2009−2018年的连续地震数据,并应用该流程进行微震检测、去噪和定位。首先,从台网中心提供的3198个地震事件目录中筛选出1200个信噪比高且震相较为明显的地震事件作为模板事件,利用基于图像处理器加速的模板匹配定位方法(GPU-M&L)进行遗漏地震的检测与识别,然后利用基于神经网络的地震波形去噪方法进行去噪处理,再结合基于深度学习的震相拾取技术和双差定位方法对去噪后的地震事件进行震相拾取和定位。使用GPU-M&L共检测出13318个地震事件,约为台网地震目录事件数量的4.2倍;去噪后得到7514个地震事件,约为台网地震目录事件数量的2.3倍,完备震级从台网目录的ML 1.5降低至ML 0.9。定位后共获得7247个地震事件,精定位结果显示,东昆仑断裂带东段的地震以中小震为主,在空间上呈窄条带状或簇状分布,震源深度的优势分布深度为0~15 km;在101°E附近地震的空间展布发生变化,主要沿阿万仓断裂带向东南展布;在玛沁-玛曲段可能存在地震空区。本研究的微震结果为研究东昆仑断裂带东段地震活动性、发震断层的深部构造等提供了重要的数据基础。

关键词：东昆仑断裂微震检测匹配定位技术地震去噪双差定位

大思政背景下高校护生护士领导力的现状调查及影响因素研究

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科教文汇 2024年第6期 117-121页

作者：莫园园黄福双黄亚芬潘秋香梁榕广西医科大学第二附属医院广西南宁530007

目的:了解实习护生护士领导力现状并分析影响因素,为培养护生护士领导力提供理论依据。方法:采用护士领导力自评量表对实习护生进行调查研究。结果:护士领导力总分为(141.68±25.29)分,不同年龄(P<0.05),理论学习成绩等级(P<0.05),是否... 详细信息

目的:了解实习护生护士领导力现状并分析影响因素,为培养护生护士领导力提供理论依据。方法:采用护士领导力自评量表对实习护生进行调查研究。结果:护士领导力总分为(141.68±25.29)分,不同年龄(P<0.05),理论学习成绩等级(P<0.05),是否为社团成员或学生会成员(P<0.05),是否担任过班级、学校或学院的学生干部(P<0.05),护理学专业热爱程度(P<0.05)对护士领导力总分有影响。实习护生职业认同与护士领导力自评量表五个维度呈正相关关系(P<0.01)。结论:实习护生护士领导力总体处于中上水平,各医学院校应重视护生护士领导力的培养和全面发展,结合相关影响因素采取有效措施,以此为护理专业人才培养提供依据。

关键词：实习护生护士领导力影响因素

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基于聚类的重复地震识别方法及应用

地球与行星物理论评（中英文） 2025年第1期56卷 94-101页

作者：黄雅芬李红谊李炎臻葛慧颖张盛中陆内火山与地震教育部重点实验室(中国地质大学(北京)) 北京100083 中国地质大学(北京)地球物理与信息技术学院北京100083 中国地质大学(北京)信息网络与数据中心北京100083

重复地震是指不同时期发生在断层同一位置的一组地震,表现为波形和震源机制上的高度相似.重复地震可用来探测断层深部形变、刻画断层行为、评估地震灾害.然而,重复地震的识别条件阈值设置尚没有统一的标准,常用的识别参数存在较大的主观... 详细信息

重复地震是指不同时期发生在断层同一位置的一组地震,表现为波形和震源机制上的高度相似.重复地震可用来探测断层深部形变、刻画断层行为、评估地震灾害.然而,重复地震的识别条件阈值设置尚没有统一的标准,常用的识别参数存在较大的主观性,会导致识别重复地震存在误差.为解决上述问题,本研究利用基于机器学习中的层次聚类算法构建了一个自动高效的重复地震识别方法.首先采用波形并行互相关技术计算地震波形之间的互相关系数,结合S-P到时差方法估算地震震源之间的距离,再利用层次聚类方法将地震聚类,获得重复地震.本文将该方法应用至甘孜—玉树断裂带和东昆仑断裂带地区的地震活动,识别重复地震并估算断层滑动速率.在甘孜—玉树断裂带附近共识别出6组重复地震组,它们均沿甘孜—玉树断裂带走向布展,平均断层滑动速率为7.4 mm/a.东昆仑断裂带附近共识别出3组重复地震组,平均断层滑动速率为6.9 mm/a.沿东昆仑断裂东段,断层滑动速率呈现出速率向东逐渐降低的趋势,显示该区域复杂的动力作用过程.这些结果与野外地质观测和GPS大地测量结果较为一致.基于实际数据测试和验证,结果表明本文发展的基于聚类的识别重复地震方法具有自动、高效、便捷的特性,为准确识别重复地震提供了重要的基础资料,为分析断层活动性提供了重要约束.

关键词：重复地震聚类分析甘孜—玉树断裂带东昆仑断裂带

Earthquake detection in the Jiangsu region, China using graphics-processing-unit-based Match & Locate and rapid earthquake association and location

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Earthquake Science 2020年第1期33卷 23-33页

作者： yafen huang Shengzhong Zhang Yuejun Lv Yanzhen Li Yuting Zhang Min Liu School of Geophysics and Information Technology China University of GeosciencesBeijing 100083China Shanghai Sheshan National Geophysical Observatory Shanghai201602China Information Network Center China University of GeosciencesBeijing 100083China Institute of Crustal Dynamics China Earthquake AdministrationBeijing 100085China

Earthquake detection and location are essential in earthquake studies,which generally consists of two main classes:waveform-based and pick-based *** evaluate the ability of two different methods,a graphicsprocessing-unit-based Match&Locate(GPU-M&L)method and a rapid earthquake association and location(REAL)method are applied to continuous seismic data recorded by 24 digital seismic stations from Jiangsu Seismic Network during 2013 for ***-M&L is one of waveform-based methods by waveform cross-correlations while REAL is one of pick-based method to associate arrivals of different seismic phases and locate events through counting the number of P and S picks and travel time ***-six templates are selected from the Jiangsu Seismic Network local catalog by using the GPU-M&*** number of newly detected and located events is about 2.8 times more than those listed in the local *** both utilize a deep-neural-network-based arrival-time picking method called PhaseNet and a shortterm/long-term average(STA/LTA)trigger algorithm for seismic phase detection and picking by applying the *** then refine seismic locations using a least-squares location method(VELEST)and a high-precision relative location method(hypoDD).By applying STA/LTA and PhaseNet,1006 and 1893 events are associated and located,*** newly detected events are mainly clustered and show steeply dipping fault *** analyzing the performance of these methods based on long-term continuous seismic data,the detected catalogs by the GPU-M&L and REAL show that the magnitudes of completeness are 1.4 and 0.8,respectively,which are smaller than 2.6 given by the local *** REAL provides improvement compared with GPU-M&L,REAL is highly dependent on phase detection and picking which is strongly affected by signal-noise ratio(SNR).Stations at southeast of the study region with low SNR may lead to few detections in the same area.

关键词： earthquake detection rapid earthquake association and location graphics-processing-unit-based Match and Locate

Evaluation on Urban Tourism Competitiveness of Beibu Gulf Rim Based on the Entropy Approach

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Asian Agricultural Research 2019年第10期11卷 1-6,10页

作者： yafen huang Hua QUAN School of Life Science and Technology Lingnan Normal UniversityZhanjiang 524000China Macao University of Science and Technology Macao 999078China School of Tourism&Event Management Shanghai University of Internal Business and EconomicsShanghai 200000China

The tourism competitiveness of the cities around the Beibu Gulf was studied using the entropy method from the perspective of the 14 indexes of tourism current competitiveness,tourism support competitiveness and tourism potential *** results show that the cities of Sanya,Nanning and Haikou have the stronger competitiveness;the cities of Zhanjiang,Beihai,Chongzuo and Maoming have moderate competitiveness;and the cities of Yulin,Qinzhou,Yangjiang and Fangchenggang have the weak *** to the analysis of the index weight and comprehensive ranking,almost each aspect contributes to the city *** index weights of the tourism current competitiveness,tourism support competitiveness and tourism potential competitiveness are 0.27222,0.3938 and 0.33398,*** on the niche theory,the article put forward the strategies:dislocation development,balanced development and regional tourism competition and cooperation development.

关键词： Entropy approach Urban agglomeration in Beibu Gulf Rim tourism competitiveness Niche theory

Near-surface structure from ambient-noise tomography and horizontal-to-vertical spectral ratio beneath the Nankou-Sunhe fault

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Earthquake Science 2020年第5期33卷 232-238页

作者： Yuting Zhang Hongyi Li Yanzhen Li Zhijie Wei Zeyu Ma Huiying Ge Tongli Wang yafen huang Min Liu School of Geophysics and Information Technology China University of GeosciencesBeijing 100083China Shanghai Sheshan National Geophysical Observatory Shanghai 201602China Beijing Earthquake Agency Beijing 100080China

Active faults pose a great threat to urban *** the largest NW-trend active fault in Beijing area,the Nankou-Sunhe fault plays an important role in earthquake disaster and city *** this study,we collect continuous ambient noise data recorded by 43 temporary short-period seismograph between September 21th to October 12th 2019 to investigate the near-surface structure beneath the Nankou-Sunhe fault by using ambient noise tomography(ANT)and horizontal-to-vertical spectral ratio(HVSR)*** ambient noise processing,fundamental-mode Rayleigh wave signals are clearly observed in the frequency band of 0.4-2.5 *** direct surface-wave inversion algorithm is applied to calculate the 3D shear-wave velocity *** results show that there is a sharp velocity contrast across the Nankou-Sunhe fault,with low velocities down to about 2 km on the hanging wall and high velocity on the footwall of the *** to the geological investigation,the low velocities are related to thicker sediments and Jurassic volcanic rock below which are the cap rock of the hydrothermal *** the HVSR analysis,the HVSR curves of the sites near the fault shows double-peak,one less than 1 Hz and the other centered 7 *** converting frequency to depth by the empirical equation,the results show that the thickness of sediments is thinned from southwest to northeast,which generally agrees well to field *** results provide high-resolution near-surface structure for future study on disaster risk reduction and urban planning.

关键词： ambient noise tomography horizontal-to-vertical spectral ratio dense array Nankou-Sunhe fault

Long-term Spatial-temporal Evolution of Seismicity of the 2010 Ms 7.1 Yushu,Qinghai,China Earthquake

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Long-term Spatial-temporal Evolution of Seismicity of the 20...

Study on the Perceived Value of Zhanjiang Residents to Mangrove Cuisine

2022年中国地球科学联合学术年会

作者： yafen huang Hongyi Li Yuhu Ma Jianxin Ma

In this study,we present an effective workflow for microearthquake detection and location that assembles three main methods including a Graphics Processing Unit-based Match and Locate technology(GPU M&L),a deep-neural-network-based noise-reduction technique(DeepDenoiser),and a U-net-based phase picking method(PhaseNet). Following this workflow,

关键词： Spatial Long-term Spatial-temporal Evolution of Seismicity of the 2010 Ms 7.1 Yushu,Qinghai,China Earthquake

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Psychology Research 2023年第6期13卷 266-275页

作者： DENG Yuping huang yafen Lingnan Normal University ZhanjiangChina

Taking mangrove cuisine in Zhanjiang as an example,this paper investigates the residents’perceived value of mangrove cuisine through questionnaire *** results show that the overall satisfaction of residents on the mangrove cuisine in Zhanjiang is *** highest satisfaction of residents on the perceived value of mangrove cuisine is the historical and cultural heritage,and the lowest satisfaction is the local *** main factor affecting the satisfaction is the utility *** on the analysis of the present situation and existing problems of mangrove cuisine resources in Zhanjiang,this paper puts forward some countermeasures and suggestions for the sustainable development of mangrove food in Zhanjiang in terms of strengthening government support,increasing public participation awareness,increasing publicity channels,enhancing popularity and reputation,and paying attention to the inheritance of characteristic food culture.

关键词： Zhanjiang residents mangrove cuisine perceived value questionnaire survey