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墨西哥Burgos盆地Perdido构造带深浅双层盐分布特征及南北差异构造形变 被引量:2
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作者 朱钇同 李爱山 +1 位作者 陈亮 蔺频 《中国海上油气》 CAS CSCD 北大核心 2021年第6期62-70,共9页
墨西哥湾油气资源丰富、资源潜力巨大,复杂的盐构造变形是油气成藏的重要影响因素。为了研究复杂盐构造的变形规律,本文利用区域地质、重力和地震资料,对Burgos盆地Perdido构造带的双层盐构造开展研究,探讨了深浅双层盐的特征,从盐岩变... 墨西哥湾油气资源丰富、资源潜力巨大,复杂的盐构造变形是油气成藏的重要影响因素。为了研究复杂盐构造的变形规律,本文利用区域地质、重力和地震资料,对Burgos盆地Perdido构造带的双层盐构造开展研究,探讨了深浅双层盐的特征,从盐岩变形机制的角度说明盐构造样式的不同。研究表明,深层母盐受控于基底古构造格局,边缘隆起带控制了母盐底辟的分布;浅层盐蓬受控于母盐的重力滑脱再变形,母盐的剪切撕裂作用控制了浅层盐蓬的分布。深浅两套盐不同的空间配置关系最终决定了Perdido带南北不同的盐构造变形机制与构造样式。北段深浅双层盐构造整体变形,形成以盐底辟和冲断背斜为主的构样式;而南段深浅双层盐构造分层变形,形成了以盐核背斜和盐前滑脱逆冲为主的构造样式。 展开更多
关键词 Perdido构造带 双层盐分布特征 差异构造形变 构造样式
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地震前后垂直形变场动态演化的量化指标 被引量:3
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作者 张四新 王双绪 +1 位作者 陈兵 李风琴 《大地测量与地球动力学》 CSCD 2004年第3期35-39,56,共6页
提出一种表达垂直形变场动态演化过程的量化指标———区域应变率、应变集中度。在此基础上 ,对南北地震带各水准监测区近 30年的垂直形变资料进行了实际计算 ,并结合具体震例进行了对比研究。结果表明 :量化指标在一定程度上能够反映... 提出一种表达垂直形变场动态演化过程的量化指标———区域应变率、应变集中度。在此基础上 ,对南北地震带各水准监测区近 30年的垂直形变资料进行了实际计算 ,并结合具体震例进行了对比研究。结果表明 :量化指标在一定程度上能够反映地震前后形变场的动态演化过程和地壳运动状态 。 展开更多
关键词 形变差异 区域应变率 应变集中度 垂直形变 地震预报
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Charting brain growth in tandem with brain templates at school age 被引量:4
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作者 Hao-Ming Dong F.Xavier Castellanos +20 位作者 Ning Yang Zhe Zhang Quan Zhou Ye He Lei Zhang Ting Xu Avram J.Holmes B.T.Thomas Yeo Feiyan Chen Bin Wang Christian Beckmann Tonya White Olaf Sporns Jiang Qiu Tingyong Feng Antao Chen Xun Liu Xu Chen Xuchu Weng Michael P.Milham Xi-Nian Zuo 《Science Bulletin》 SCIE EI CAS CSCD 2020年第22期1924-1934,M0004,共12页
Brain growth charts and age-normed brain templates are essential resources for researchers to eventually contribute to the care of individuals with atypical developmental trajectories.The present work generates age-no... Brain growth charts and age-normed brain templates are essential resources for researchers to eventually contribute to the care of individuals with atypical developmental trajectories.The present work generates age-normed brain templates for children and adolescents at one-year intervals and the corresponding growth charts to investigate the influences of age and ethnicity using a common pediatric neuroimaging protocol.Two accelerated longitudinal cohorts with the identical experimental design were implemented in the United States and China.Anatomical magnetic resonance imaging(MRI)of typically developing school-age children(TDC)was obtained up to three times at nominal intervals of1.25 years.The protocol generated and compared population-and age-specific brain templates and growth charts,respectively.A total of 674 Chinese pediatric MRI scans were obtained from 457 Chinese TDC and 190 American pediatric MRI scans were obtained from 133 American TDC.Population-and age-specific brain templates were used to quantify warp cost,the differences between individual brains and brain templates.Volumetric growth charts for labeled brain network areas were generated.Shape analyses of cost functions supported the necessity of age-specific and ethnicitymatched brain templates,which was confirmed by growth chart analyses.These analyses revealed volumetric growth differences between the two ethnicities primarily in lateral frontal and parietal areas,regions which are most variable across individuals in regard to their structure and function.Age-and ethnicity-specific brain templates facilitate establishing unbiased pediatric brain growth charts,indicating the necessity of the brain charts and brain templates generated in tandem.These templates and growth charts as well as related codes have been made freely available to the public for open neuroscience(https://github.com/zuoxinian/CCS/tree/master/H3/Growth Charts). 展开更多
关键词 Growth charts NEUROIMAGING ETHNICITY Brain templates DEVELOPMENT
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