Results 31 to 40 of about 5,209,200 (296)
2017年西藏米林MS6.9地震余震序列重定位和b值时空分布特征
Dizhen xuebao, 2019 本文采用双差定位方法对2017年西藏米林MS6.9地震的余震序列进行重定位，获得了较准确的余震空间分布。在此基础上，计算了米林地震震源区的b值空间分布，并结合前人资料研究了米林地震前后的b值变化。重定位结果显示：米林地震余震序列呈NW−SE向分布，主要分布在雅鲁藏布江大拐弯缝合带和比鲁构造岩片的北东边界，震源深度集中于3—20 km范围内。b值时间分布显示：米林地震震前震源区的b值降低，表明震前震源区存在较强的应力积累；地震后震源区的b值呈现跳跃式上升，反映出震源区应力释放，同时随时间的推移 ...
Jiadong Han, Jiansi Yang, Weiping Wang
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Seismic Imaging and Seismicity Analysis in Beijing-Tianjin-Tangshan Region
International Journal of Geophysics, 2011 In this study a new tomographic method is applied to over 43,400 high-quality absolute direct P arrival times and 200,660 relative P arrival times to determine detailed 3D crustal velocity structures as well as the absolute and relative hypocenter ...
Xiangwei Yu, Wenbo Zhang, Yun-tai Chen
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Geoscience Letters, 2020 Mt. Agung, located in Karangasem-Bali, Indonesia, had a significant increase of swarm earthquakes from September 2017 until the recent eruption in November 2017.
Mohamad Taufik Gunawan +7 more
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Dizhen xuebao, 2019 利用双差定位方法对2018年松原MS5.7地震序列中ML≥1.0地震重新定位，之后使用CAP方法求解松原MS5.7地震序列中强地震的震源机制解，再借助MSATSI软件包反演得到松原地区的区域应力场。综合分析以上研究结果得到如下结论：① 松原MS5.7地震序列发生在NW走向的第二松花江断裂与NE走向的扶余—肇东断裂交会处，将地震精定位结果沿两条断层走向作剖面分析，NW向剖面主轴长度约为5 km，震中分布均匀，NE向剖面主轴长度亦约为5 km，震中呈倾向NE的高倾角分布；② 该序列中的4次ML≥3 ...
Jun Li +5 more
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Micro-seismic events detection and its tectonic implications in Northeastern Hainan Province
Frontiers in Earth Science, 2023 In this paper, we combine the U-net-based phase picking method (PhaseNet) with Graphics Processing Unit-Based Match and Locate technology (GPU-M&L) and a deep-learning-based seismic signal de-noising method (DeepDenoiser) as a workflow for ...
Zeyu Ma +5 more
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Double-difference Relocation of the Aftershocks of the Tecomán, Colima, Mexico Earthquake of 22 January 2003 [PDF]
Pure and Applied Geophysics, 2010 On 22 January 2003, the M_w = 7.6 Tecoman earthquake struck offshore of the state of Colima, Mexico, near the diffuse triple junction between the Cocos, Rivera, and North American plates. Three-hundred and fifty aftershocks of the Tecoman earthquake with magnitudes between 2.6 and 5.8, each recorded by at least 7 stations, are relocated using the ...
Andrews, Vanessa +3 more
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Rudarsko-geološko-naftni ZbornikWe present a hypocenter relocation analysis to examine the distribution of seismicity in the Central Java and Yogyakarta regions in Indonesia. The data were obtained from the BMKG earthquake database for the period August–October 2024, covering the area ...
Wahyu Hidayat +7 more
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The Relocation Of Bawean Earthquake Aftershock Using Double Difference Method
Jurnal Rekayasa Geofisika IndonesiaGempa bumi yang terjadi pada tanggal 22 Maret 2024 di sekitar Pulau Bawean memicu serangkaian gempa susulan. Penelitian ini bertujuan untuk relokasi gempa susulan yang terjadi di sekitar Pulau Bawean dengan menggunakan metode Double Difference untuk meningkatkan akurasi penentuan hiposenter. Data yang digunakan dalam penelitian ini adalah katalog gempa
Riska Yulinda +3 more
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Design and analysis strategies for robust microbiome ageing research
FEBS Letters, EarlyView.The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik +5 more
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Dizhen xuebao, 2019 本文利用云南及周边区域地震台网2010—2016年记录到的近震资料，采用双差层析成像方法进行地震重定位并获得了青藏高原东南缘的三维地壳速度结构。结果显示：重定位后的震源位置精度得到明显提高，震源主要分布于20 km深度以上的中上地壳；地震分布与速度结构存在一定的相关性，大多数地震发生在中上地壳的低速异常区内以及高、低速异常区域之间；研究区上地壳速度结构存在明显的横向不均匀性，其速度异常与地表地形及地质特征密切相关；中下地壳分布着两条主要的低速带，一条沿着安宁河断裂、小江断裂分布在川滇菱形地块的东侧 ...
Wei Liu, Qingju Wu, Fengxue Zhang
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