搜索结果: 1-15 共查到“地球物理学 polar”相关记录16条 . 查询时间(0.062 秒)
The external magnetic sources over the polar caps - Feasible modelling unrealistic expectations
magnetospheric model plasma cavity Hamilton's principle substorm auroral oval Svalgaard vortex ? aurora luminosity curve electric current electric field plasma drift trapped particles
2015/10/8
No average status can be defined for the sources of the external magnetic field over the polar caps, no index can provide with any such model, the observation of no single quantity or parameter can gi...
The temporal and spatial variations of low frequency geomagnetic pulsations at polar cusp and cap latitudes
Geomagnetic pulsations Antartica
2015/10/8
Geomagnetic field measurements at two Antarctic stations are compared during two weeks in the local summer (January 1-15, 1992). Low frequency (0.6-6 mHz) pulsations are observed at each station near ...
Imaging of fast moving electron-density structures in the polar cap
polar cap ionosphere data analysis inverse theory ionospheric storms
2015/9/2
The imaging of fast-moving electron-density structures in the polar cap presents a unique set of challenges that
are not encountered in other ionospheric imaging problems. GPS observations of total e...
Microbial biomass and basal respiration of selected Sub-Antarctic and Antarctic soils in the areas of some Russian polar stations
Antarctica where soil biological ecological survey soil Antarctica landscape soil investigation
2015/1/6
Antarctica is a unique place for soil, biological, and ecological investigations. Soils of Antarctica have been studied intensively during the last century, when different national Antarctic expeditio...
Geomagnetic polar observatories: the role of Concordia station at Dome C,Antarctica
Geomagnetic observatory GNSS Azimuth Mark Determination Dome C Concordia Antarctica
2015/8/18
A geomagnetic observatory is a permanent facility where magnetic declination and inclination are recorded in conjunction with the temporal evolution of the magnetic field components. Polar regions are...
Concordia,Antarctica,seismic experiment for the International Polar Year (CASE-IPY)
Antarctica Seismology Concordia IPY POLENET
2015/8/17
The CASE-IPY project, part of the larger POLENET initiative of geophysical observations for the International Polar Year, was built on our extensive experience of running seismological stations in Ant...
Advances in seismic monitoring at Deception Island volcano (Antarctica) since the International Polar Year
Volcano monitoring Seismic network Seismic array Deception Island volcano International Polar Year
2015/8/17
Deception Island is an active volcano located in the south Shetland Islands, Antarctica. It constitutes a natural laboratory to test geophysical instruments in extreme conditions, since they have to e...
Getting around Antarctica: new high-resolution mappings of the grounded and freely-floating boundaries of the Antarctic ice sheet created for the International Polar Year
Antarctica the grounded freely-floating boundaries
2014/5/20
Two ice-dynamic transitions of the Antarctic ice
sheet – the boundary of grounded ice features and the freely-floating boundary – are mapped at 15-m resolution by par-ticipants of the International P...
Cyclostrophic vortices in polar regions of rotating planets
Cyclostrophic vortices polar regions rotating planets
2009/11/12
Multi-petal, rotating vortices can form in two-dimensional flows consisting of an inviscid incompressible fluid under certain conditions. Such vortices are principally nonlinear thermo-hydrodynamical ...
On the properties of turbulent boundary layer over polar cusps
properties of turbulent boundary layer polar cusps
2009/11/12
We study properties of nonlinear magnetic fluctuations in the turbulent boundary layer (TBL) over polar cusps during a typical TBL crossing on 19 June 1998. Interball-1data in the summer TBL are compa...
Large amplitude solitary waves in and near the Earth’s magnetosphere,magnetopause and bow shock:Polar and Cluster observations
Large amplitude solitary waves Earth’s magnetosphere magnetopause bow shock
2009/11/11
Solitary waves with large electric fields (up to 100's of mV/m) have been observed throughout the magnetosphere and in the bow shock. We discuss observations by Polar at high altitudes ( ~ 4-8 RE ), d...
Association of Alfvén waves and proton cyclotron waves with electrostatic bipolar pulses:magnetic hole events observed by Polar
Alfvén waves proton cyclotron waves electrostatic bipolar pulses magnetic hole events
2009/11/11
Two magnetic hole events observed by Polar on 20 May 1996 when it was in the polar cap/polar cusp boundary layer are studied. Low-frequency waves, consisting of nonlinear Alfvén waves and large amplit...
Afternoon Absorption and the Rotation of the Polar Cap Convection Pattern
Afternoon Absorption Rotation Polar Cap Convection Pattern
2009/6/15
Afternoon Absorption and the Rotation of the Polar Cap Convection Pattern.
Geomagnetic Observations at Sodankylä During the First International Polar Year
Geomagnetic observations Polar Year
2009/6/10
Sodankylä was one of the 11 stations that were in operation during the First International Polar Year 1882-1883. In this study we re-analyze the magnetic observations carried out in Sodankylä...
利用2004年11月6～10日磁暴发生期间南极区域内的中国中山站GPS常年跟踪站（ZHON）和国际GPS服务站（CAS1, MCM4, SYOG, MAW1）的GPS观测数据，计算了可观测卫星传播路径上的TEC和ROT值，进而依据TEC的波动频率和幅度推估出极区碎片的个数，分析了极区磁暴期间电离层响应及其极区碎片特性. 最终所得TEC和ROT结果与极区地磁场Dst和Kp指数信息相吻合，如实地反映了...