Session 13: Developments in dense array seismology Co-Conveners: YAO Huajian, ZHANG Haijiang (University of Science and Technology of China), TIAN Xiaobo (Institute of Geology and Geophysics, CAS, China), GUO Zhen (Southern University of Science and Technology, China), ZENG Xiangfang (Innovation Academy of Precision Measurement Science and Technology, CAS, China) Description: Dense arrays have been widely used in seismological studies and have greatly facilitated our understanding of seismic source properties and Earth’s structures of various length scales. Nodal arrays (geophones with built-in battery and digitizer) have more recently been used in high-resolution imaging of regional crustal structures, volcanic regions, fault zones, urban areas, oil and gas fields and mineral deposits, etc. These seismic nodes are much cheaper and easier to deploy than broadband sensors, making dense arrays with tens or hundreds of meters receiver spacing feasible for high-resolution imaging of shallow structures and high-precision earthquake locations. In addition, recent developments in Distributed Acoustic Sensing (DAS) have make ultra-dense-array imaging and source location applicable even using existing telecommunication fiber cables. In this session, we invite contributions from all relevant studies using dense arrays composed of broadband seismometers, integrated geophones, or DAS. We are particularly interested in new techniques related to data processing, imaging, full waveform inversion, and source location (including induced and triggered earthquakes) based on dense arrays. Dense array applications with passive and active sources including ambient noise sources are all encouraged for submission. Oral Section 1 Thursday, October 24, 2024 Chongqing Hall, 3rd Floor Co-Chairs: Huajian YaoXiangfang Zeng 08:20 - 08:25 Huajian Yao Opening Remark 08:25 - 08:45 Yingjie Yang Ambient noise tomography using regionalized phase velocities measured from array-based methods (Invited) 08:45 - 09:00 Xin Liu Data-Adaptive Surface Wave Azimuthal Anisotropy Tomography Using Poisson-Voronoi Cells: Method and Application to SW China 09:00 - 09:15 Mengxuan Yan Linear array double difference adjoint ambient noise tomography of the central Tanlu fault zone, eastern China 09:15 - 09:30 Haijiang Zhang Improving surface wave dispersion estimation for dense seismic array at different scales by template matching and SVD denoising 09:30 - 09:45 Chuntao Liang The Wave Gradiometry Method: theory and applications to extract 3D velocity, anisotropy and attenuation 09:45 - 10:00 Yunpeng Chen Physics-Informed Neural Networks for Multi-Frequency Eikonal Tomography Using Dense Array Data from Northeastern Tibet Section 2 Thursday, October 24, 2024 Chongqing Hall, 3rd Floor Co-Chairs: Haijiang ZhangXiaobo Tian 10:20 - 10:40 Weitao Wang Deep-learning based automatic earthquake catalog building for large-scale seismic array and its application to ChinArray northeast Tibet (Invited) 10:40 - 10:55 Weiwen Chen Enhancing Focal Mechanisms Catalog of Small Earthquakes through a Mutual Aid Approach 10:55 - 11:10 Shitan Nie Southward Moho Tearing in the Southern Tibetan Plateau: Insights from Pn Waveform Analysis 11:10 - 11:25 Liangyu Zhang Pn wave receiver function imaging of crustal structure beneath the Himalayan orogenic belt 11:25 - 11:40 Peng Zou Teleseismic elastic reverse time migration of the mantle transition zone beneath Northeast China 11:40 - 11:55 Xin Wang Seismic evidence for melt-rich Lithosphere-Asthenosphere Boundary beneath young slab at Cascadia 11:55 - 12:15 Haijiang Zhang General Discussion and Conclusion Poster Physical Poster will be presented from Oct 23-24, 2024 in Zhonghua Hall at the 2nd floor of the New Century Hotel. iPoster will be online from Oct 20, 2024. SP13-001 Yibin Wu Subduction polarity of the Bangong-Nujiang Ocean revealed by Pn-wave receiver function SP13-002 Ruihao Yang Application of a receiver function inversion method to dense short-period array data for the shallow crustal structure in the Altyn Tagh Region and its vicinity SP13-003 Jinze Wang Dense array ambient noise tomography reveals the shallow crustal structure in the northern section of the Longmen Shan fault zone SP13-004 Jiayan Tan Shear Wave Velocity Structure of Eastern Tien Shan Based on Joint Inversion of Ambient Noise Dispersion and Receiver Functions SP13-005 Muhammad Imran Hafeez Abbasi High-Resolution Ambient Noise Tomography of the Dabie Orogenic Belt: Insights into Crustal Structure and Tectonic Evolution SP13-006 Xiang Huang High-resolution S-wave velocity model of the crust and upper mantle in North China from joint inversion of surface wave dispersion, ellipticity, and teleseismic P-waveforms SP13-007 Lulu Zhao Resolving Temporal Variations in Subsurface Velocity and Attenuation across the Taklimakan Desert Using Road Traffic Seismic Signals SP13-008 Lv Peng Bibliometric analysis of research in dense seismic array based on Web of Science SP13-009 Ziye Yu Bi-directional Pre-trained Network for Single-Station Seismic Waveform Analysis SP13-010 Lei Zou Passive Source Detection Technology Based On Short-Period Dense Seismic Array