搜索结果: 1-13 共查到“知识库 地球物理学 COSMIC”相关记录13条 . 查询时间(0.199 秒)
Occurrences, abundances, and compositional variations of cosmic symplectites in the Acfer 094 ungrouped carbonaceous chondrite
cosmic symplectite magnetite Fe,Ni-sulfides Acfer 094 carbonaceous chondrite
2017/4/10
We describe the petrographic occurrences, abundances, and compositional variations of symplectically intergrown
Fe,Ni-sulfides and 17,18O-rich magnetite (D17O ~ 90‰), named cosmic symplectites (COS; ...
基于GPS和COSMIC数据分析汶川地震TEC和NmF2扰动
汶川地震 TEC NmF2 同震响应
2014/9/26
使用相关方法和welch法计算功率谱密度研究汶川地震前后GPS TEC在时域和频域上的变化，并进一步分析NmF2空间分布变化.得出主要结论， 震前5月9日开始TEC平常具有良好的相关性被打破，24 h全日波、12 h半日波成分功率谱密度幅度值变化明显.5月12日至6月11日NmF2变化幅度明显增大.研究结果显示，TEC和NmF2时空分布变化存在电离层震前扰动和同震响应， 并且TEC震后的异常变化相...
基于COSMIC卫星观测数据的平流层重力波的全球分布特征研究
重力波 平流层 COSMIC
2014/12/19
本文利用2007年1月至2012年12月的COSMIC卫星温度剖线,从中提取了垂直波长在3~10 km的重力波扰动信息,进而分析了全球平流层大气重力波的分布特征.赤道地区低平流层重力波表现出明显的准两年变化,这种变化与风场的准两年变化具有明显的相关性,向下发展速度约为1 km/月;赤道地区高平流层(35 km以上区域)的重力波活动则存在明显的半年变化.中高纬度重力波活动主要表现为冬季强夏季弱.在南...
中国区域电离层垂测仪探测参量与COSMIC掩星反演结果比较研究
COSMIC 垂测仪 临界频率 峰值高度
2014/12/19
利用漠河站、左岭站、富克站垂测仪数据和COSMIC反演的电离层资料,分析比较了太阳活动高年两种探测手段获取的电离层特征参量(NmF2、hmF2)的相关性.结果表明,两种方式获取的电离层对应特征参量相关性较高,且NmF2的相关性好于hmF2,同时相关性与纬度和季节有关.在地磁中纬度地区对应参量相关性较好,而在地磁低纬度受北驼峰控制区域相关性降低;在电离层赤道异常区域,春秋季、夏季对应特征参量相关性好...
基于Global Positioning System (GPS)掩星数据在平流层具有较高准确性、稳定性的优势，本文尝试用新一代GPS掩星观测——the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC)资料验证不同卫星平台上先进的微波探测仪（AMSU）的平流层观测结果.通过COSMIC大...
Cosmic ray momentum diffusion in the presence of nonlinear Alfvén waves
Cosmic ray momentum diffusion nonlinear Alfvén waves
2009/11/16
The relation between the spatial diffusion coefficient along the magnetic field, kII, and the momentum diffusion coefficient, Dp, for relativistic cosmic ray particles is modelled using Monte Carlo si...
The formation of relativistic plasma structures and their potential role in the generation of cosmic ray electrons
relativistic plasma structures potential role cosmic ray electrons
2009/11/2
Recent particle-in-cell (PIC) simulation studies have addressed particle acceleration and magnetic field generation in relativistic astrophysical flows by plasma phase space structures. We discuss the...
COSMIC大气掩星开环数据反演方法
GPS掩星反演 开环数据处理 电波弯曲角 导航数据调制影响
2013/11/7
COSMIC星座GPS无线电掩星探测利用GPS开环接收技术提高低层大气观测数据的质量和对上升掩星事件的跟踪能力.开环掩星观测数据受到GPS导航数据调制的影响，在其数据后处理中必须消除该影响以获得高质量的科学反演结果.利用GPS导航数据调制码数据和利用开环数据本身内在的关系等两种方法可以消除该影响.将上述方法应用于COSMIC的掩星事件个例反演，获得了修复的大气附加相位数据；并利用几何光学近似反演方...
On the Variations of Cosmic Ray ?-Meson Intensity During Rapid Pressure Variations and about the Applicability of Duperier's Model
Meson Intensity Variations
2009/6/18
On the Variations of Cosmic Ray ?-Meson Intensity During Rapid Pressure Variations and about the Applicability of Duperier's Model.
Some Aspects on Atmospheric Effects of the Cosmic Ray ?-Meson Intensity
Atmospheric Effects Meson Intensity
2009/6/18
Some Aspects on Atmospheric Effects of the Cosmic Ray ?-Meson Intensity.
Construction of a Scintillation Counter Telescope for the Registration of the Meson Component of Cosmic Rays
Construction Scintillation Counter Telescope Registration Cosmic Rays
2009/6/18
Construction of a Scintillation Counter Telescope for the Registration of the Meson Component of Cosmic Rays.
The Cosmic Ray Asymptotic Directions for Station Oulu in the Magnetic Field of the Tsyganenko 1989 Model
cosmic rays magnetospheric magnetic field asymptotic directions geomagnetic disturbance level
2009/6/10
Using the magnetospheric field model developed by Tsyganenko (1989) the asymptotic directions
were calculated for cosmic ray particles entering the top of the atmosphere at Oulu (65.°06N, 25.°47E).Th...
Small-Scale Structure of Ionospheric Absorption of Cosmic Noise During Pre-Onset and Sharp Onset Phases of an Auroral Absorption Substorm
Substorm cosmic noise absorption
2009/6/10
Impulsive pulsations of ionospheric absorption were found in imaging riometer measurements at
Kilpisjärvi during the pre-onset and onset phases of auroral absorption substorms. The periods of th...