利用绝对地震定位方法(Hpyo2000)对青藏高原中部地区(32°N～36°N,90°E～93°E)于2016年6月至2017年6月期间发生的中小地震进行了重定位。与中国地震台网测定结果相比,定位后结果整体上更加聚集,水平位差距超过10km,...利用绝对地震定位方法(Hpyo2000)对青藏高原中部地区(32°N～36°N,90°E～93°E)于2016年6月至2017年6月期间发生的中小地震进行了重定位。与中国地震台网测定结果相比,定位后结果整体上更加聚集,水平位差距超过10km,深度上集中在0～8km范围内,这表明青藏高原内部上地壳构造活跃。2017年6月共发生8次3.0级以上地震,定位后的震中位置集中分布在格拉丹东附近。定位前后M<3.0的小地震的结果也显示明显的差异。为此,我们采用CAP(Cut and Paste)方法反演了M≥3.0地震的震源机制,结果显示其与地表构造性质较为吻合,青藏高原内部仍受到印度板块强烈的挤压作用。其中2017年6月格拉丹东附近发生的8次地震均为正断或走滑兼正断型,根据前人研究结果,猜测这是壳幔活动剧烈的地表响应。展开更多
Mathematical models between surfacing welding properties of C, Cr, Mo, V, W alloy system and encode factors of alloy additives are established by test methods of advanced trial optimizing technology and computer assis...Mathematical models between surfacing welding properties of C, Cr, Mo, V, W alloy system and encode factors of alloy additives are established by test methods of advanced trial optimizing technology and computer assistant design (CAD). They help to draw unitary functions and binary isoclines diagrams through which the influence of encode factorial linearity, nonlinear effect and factors interaction of alloy additives on the performances of surfacing welding can be analyzed directly and quantitatively. Meanwhile, the performances of deposited metal can also be predicted according to the content of alloy additives.展开更多
文摘利用绝对地震定位方法(Hpyo2000)对青藏高原中部地区(32°N～36°N,90°E～93°E)于2016年6月至2017年6月期间发生的中小地震进行了重定位。与中国地震台网测定结果相比,定位后结果整体上更加聚集,水平位差距超过10km,深度上集中在0～8km范围内,这表明青藏高原内部上地壳构造活跃。2017年6月共发生8次3.0级以上地震,定位后的震中位置集中分布在格拉丹东附近。定位前后M<3.0的小地震的结果也显示明显的差异。为此,我们采用CAP(Cut and Paste)方法反演了M≥3.0地震的震源机制,结果显示其与地表构造性质较为吻合,青藏高原内部仍受到印度板块强烈的挤压作用。其中2017年6月格拉丹东附近发生的8次地震均为正断或走滑兼正断型,根据前人研究结果,猜测这是壳幔活动剧烈的地表响应。
文摘Mathematical models between surfacing welding properties of C, Cr, Mo, V, W alloy system and encode factors of alloy additives are established by test methods of advanced trial optimizing technology and computer assistant design (CAD). They help to draw unitary functions and binary isoclines diagrams through which the influence of encode factorial linearity, nonlinear effect and factors interaction of alloy additives on the performances of surfacing welding can be analyzed directly and quantitatively. Meanwhile, the performances of deposited metal can also be predicted according to the content of alloy additives.
