Vere-Jones branching crack model was developed in 1970s.In this model,the earthquake source is regarded as the result from the total population of crack elements in a critical or near-critical branchi
汤加克马德克俯冲带是一直是全球板块研究的热点区域,该地区Wadati-Benioff带深震分布明显、震源机制解丰富.本研究中,将反演应力场的网格搜索法应用于汤加克马德克Wadati-Benioff带深部应力场研究，结果表明:第一，得到的汤加克马德克Wadati-Benioff带的走向约为N20°E，倾角约为50°。第二，浅部（100-300km)，压轴方位变化较强烈，在23°N以北，压轴方位大致为
通过对页岩油气领域所面临的关键难题的梳理和分析,提出要认识页岩油气的成藏机理、指导甜点区的选定及有效开发需要首先认识以下三方面的关键科学问题(1,2,3)和两方面的关键技术问题(4,5)：1)致密油气的可流动性及其表征,2)致密岩石的成储机理,3)致密油气的赋存机理和赋存状态,4)致密岩石无机非均质性的评价和预测,5)致密岩石有机非均质性的评价和预测。初步的探究表明,在纳米材料固-流吸附剂定量表征
The solid inner core of the Earth consists of heavy minerals Fe and Ni with a fraction of light elements such as O,S,Si.During the inner core formation,these light elements escape and rise up through
The Tianshan orogenic belt is one of the youngest and highest inland orogenic belts in the world.In order to investigate the detailed structure of the crust and uppermost mantle of the eastern Tiansha
Combining the newly collected teleseismic body waves recorded by Cuoqin-Dangxiong passive seismic array of 59 broadband stations with waveforms from several previous temporary local seismic arrays of
Anthropogenic activities like oil and gas production or geothermal field exploitation are known to induce small magnitude earthquakes (usually M5.5) on nearby active tectonic faults3,4 – which has bee
On account of increasingly frequent rock burst hazards at present,the theoretical basis of rock burst determination through P-wave velocity was analyzed based on the experiment relation model of stres
Knowledge of hidden structure defaults,stress redistribution and rock burst hazard around the longwall mining panel will allow for greater extraction efficiency with reduced safety concerns.In this pa
The rockburst phenomenon caused mostly by mining-induced tremors becomes progressively more severe as the mining depth and extent increase.Microseismic monitoring technique,as the major investigation