煤田地质与勘探2023，Vol.51Issue(12)：17-28,12.DOI:10.12363/issn.1001-1986.23.11.0772
活动构造研究的关键环节与发展趋势
Critical links and development trends of research on active tectonics
摘要
Abstract
Following a brief introduction of the general characteristics of active tectonics in China,this study analyzed two new features of large earthquakes with Ms≥7 that have struck continental China since the beginning of the 21st century:(1)Large earthquakes occur primarily in clusters along the boundary fault zone of the Bayanhar active tectonic block-part of the Qinghai-Tibet ateau active tectonic block.(2)Reverse fault-fold earthquakes have occurred multiple times within active basins or at basin-mountain boundaries.In response to the new seismic activity features and the new demand for disaster prevention and mitigation of engineering construction and the public,this study delved into the crit-ical links or understudied aspects of research on active tectonics and explored the development trends and technical ap-proaches for further strengthening related studies.First,research on active tectonics should highlight theoretical advance-ments and applications,including fine-scale research on the geometry of active faults.Furthermore,it is necessary to fo-cus on the kinematics of active faults by combining their activity behavior with rupture segmentation and practically en-hance the complementary study of paleoseismic trenches and offset microgeomorphic features.Most importantly,we should practically enhance the cross-disciplinary integration and applications of research on active tectonics with discip-lines such as tectonic geomorphology,geophysical prospecting,crustal deformation,and seismology.Second,it is neces-sary to enhance research on regional active tectonics and the understanding of the seismic cluster migration patterns and dynamic mechanisms of large earthquakes.The purpose is to elevate a holistic comprehension of large earthquake-re-lated tectonic activity within active tectonic blocks and their boundary fault zones.To this end,we should organize and analyze the seismogenic structural environments and mechanisms of cluster earthquakes in active tectonic blocks across China.Furthermore,we should identify potential active or seismic structural zones susceptible to earthquake cluster activity by synthesizing detailed research findings from historical earthquakes and paleo-earthquakes.The aim is to provide scientific and technological support for dealing with the risks of large earthquakes faced by potential seismic mi-gration areas after major seismic activity in the Bayanhar active tectonic block.Third,particular attention should be dir-ected toward under-studied aspects such as research on structures of reverse fault-fold earthquakes.Besides convention-al techniques for research on active tectonics,it is necessary to examine the geomorphic deformation characteristics by combining tectonic geomorphology.Additionally,we should conduct deep seismic structure exploration and seismolo-gical studies.The purpose is to obtain deep structural features and comprehensively analyze the relationships between deep and shallow structures,construct deformation modes,and explore seismogenic mechanisms.Overall,this paper fo-cuses on the above critical technical links and future development trends,thus providing a reference for in-depth re-search on active tectonics and disaster prevention and mitigation.关键词
活动构造/逆断裂-褶皱型地震/地震灾害/关键环节/发展趋势Key words
active tectonics/reverse fault-fold earthquake/earthquake disaster/critical link/development trend分类
天文与地球科学引用本文复制引用
袁道阳,王有林,李树武,王万合,李林元,邹小波,文亚猛..活动构造研究的关键环节与发展趋势[J].煤田地质与勘探,2023,51(12):17-28,12.基金项目
中国电建集团西北勘测设计研究院有限公司平台支撑项目(XBY-PTKJ-2022-5) （XBY-PTKJ-2022-5）
第三次新疆综合科学考察项目(2022xjkk1305) （2022xjkk1305）
