Term 术语 Definition 定义
geomagnetic field
地磁场
The MAGNETIC FIELD of the EARTH. Also called terrestrial magnetic field or earth's magnetic field.
地球的磁场。也称之为terrestrial magnetic field或者 earth's magnetic field。
geomagnetism
地磁
The MAGNETISM of the EARTH. Also called terrestrial magnetism.
地球的磁力。也称之为terrestrial magnetism。
geomatics
地球信息学
The science and technology of spatial infor­mation management, including the acquisition, storage, analysis and processing, display and dis... more
The science and technology of spatial infor­mation management, including the acquisition, storage, analysis and processing, display and dis­semination of geo-referenced information.
空间信息管理的科学与技术,包括地理参考数据采集、存储、分析、处理、显示和分发。
geometric dilution of precision
几何误差放大因子
See DILUTION OF PRECI­SION.
参见dilution of precision(误差放大因子)。
geometric latitude
归化纬度,参量纬度
See LATITUDE: PARAMETRIC.
参见parametric latitude(参量纬度)。
geometric projection
几何投影
See PROJECTION: PERSPECTIVE.
参见perspective projection(透视投影)。
geomorphology
地貌学
A branch of both geography and geology that deals with the form of the earth, the general configuration of its surface, and the changes that... more
A branch of both geography and geology that deals with the form of the earth, the general configuration of its surface, and the changes that take place in the evolution of land forms.
地理学和地质学的分支,它研究地球的形状、表面的总体结构以及陆地形状演变中发生的变化。
geophysics
地球物理学
The study of the physical characteristics and properties of the EARTH.
研究地球物理特性和属性的学科。
geosphere
陆圈
The solid and liquid portions of the EARTH; the LITHOSPHERE plus the HYDROSPHERE.
地球的固体和液体部分;岩石圈和水圈的统称。
geostationary satellite
对地静止卫星
An earth satellite moving eastward in an equatorial, circular orbit at an alti­tude (approximately 35,900 kilometers) such that its period ... more
An earth satellite moving eastward in an equatorial, circular orbit at an alti­tude (approximately 35,900 kilometers) such that its period of revolution is exactly equal to (synchronous with) the rotational period of the earth. Such a satellite will remain fixed over a point on the earth's equator. Although geostationary satellites are fre­quently called geosynchronous or synchronous satelli­tes, the orbit of an eastward moving syn­chronous satellite must be equatorial if the satellite is to remain fixed over a point on the equator. Otherwise, the satellite moves daily in a figure-eight pattern relative to the earth. Also called fixed satellite.
地球卫星在赤道上空沿圆形轨道(距地面35900千米)向东运动,绕轨道一周的时间正好与地球自转一周的时... more
地球卫星在赤道上空沿圆形轨道(距地面35900千米)向东运动,绕轨道一周的时间正好与地球自转一周的时间相等。这种卫星将定点在地球赤道某一点上。也称之为定点卫星。虽然对地静止卫星通常称之为地球同步卫星或者同步卫星,但如果卫星要保持在赤道上空某一点,向东运行的同步卫星的轨道必须是赤道。否则,卫星每天将按相对于地球的8字图形运行。也称之为fixed satellite。
geostrophic wind
地转风
That horizontal wind velocity for which the Coriolis force exactly balances the horizon­tal pressure force.
当水平气压梯度力和科里奥利力正好平衡时的水平风速。
gibbous
凸月的
adj.). See PHASES OF THE MOON.
(形容词)。参见phases of the moon(月相)。
gimbals
常平架,常平环
A device consisting of two rings pivoted at right angles to each other, for supporting anything, such as an instrument, in such a manner tha... more
A device consisting of two rings pivoted at right angles to each other, for supporting anything, such as an instrument, in such a manner that it will remain essentially horizontal when the support tilts. Also called cardanic suspension.
使仪器始终保持水平状态的装置。它由两个转动轴互相垂直的圆环组成。也称为cardanic suspension(万向悬架... more
使仪器始终保持水平状态的装置。它由两个转动轴互相垂直的圆环组成。也称为cardanic suspension(万向悬架)。
glacier
冰川
A mass of SNOW and ICE continuously moving from higher to lower GROUND or, if afloat, continu­ous­ly spread­ing. The principal forms of g... more
A mass of SNOW and ICE continuously moving from higher to lower GROUND or, if afloat, continu­ous­ly spread­ing. The principal forms of glaciers are: ICE SHEETS, ICE SHELVES, ICE CAPS, ICE PIEDMONTS, and various types of mountain glaciers.
从高处向低处连续移动或者如果漂浮在水上则不断向四周扩展的巨大冰雪团。冰川的主要类型有:冰原、... more
从高处向低处连续移动或者如果漂浮在水上则不断向四周扩展的巨大冰雪团。冰川的主要类型有:冰原、冰架、冰盖、冰麓等各种类型的冰川。
glacier ice
冰川冰,陆冰
Any ICE floating on the SEA as an ICE­BERG, which originates from a land GLACIER. Also called land ice.
发源于陆地冰川,而漂浮在海上的冰山。也称之为land ice(陆冰)。
glacier tongue
冰川舌,冰河舌
Projecting seaward extension of GLACI­ER, usually afloat.
冰川或者冰河延伸到海中的部分,通常漂浮在海上。
glaciology
冰川学
The study of SNOW and ICE on the EARTH's surface, with specific concentration on the regime of active GLACIERS.
研究地球表面冰雪,重点研究活冰川运动的学科。
glen
幽谷
A narrow, secluded VALLEY.
狭窄而幽静的山谷。
glitter
闪耀
The spots of light reflected from a point source by the surface of the SEA.
点光源被海面反射而形成的亮点。
Global Positioning System (GPS)
全球定位系统
A satellite-based NAVIGATION system designed to provide highly accurate POSITION and velocity information in three dimensions and precise t... more
A satellite-based NAVIGATION system designed to provide highly accurate POSITION and velocity information in three dimensions and precise time and time interval on a global basis continuously. GPS is operated by the United States Government. GPS to which differential corrections have been applied is known as DIFFERENTIAL GPS (DGPS). See also GLOBAL NAVIGATION SATELLITE SYSTEM.
(GPS)。一种基于卫星的导航系统,能够在全球范围内全天候连续提供高精度的三维位置和速度信息和精... more
(GPS)。一种基于卫星的导航系统,能够在全球范围内全天候连续提供高精度的三维位置和速度信息和精确的时间、时间间隔信息。GPS系统由美国政府运营。应用了差分改正信息的GPS称为差分GPS。也可参见Global Navigation Satellite System(全球卫星导航系统)。