منابع مشابه
least-square estimation of grace intersatellite and its time derivatives
one of the most valuable and important application of artificial satellites in geodetic sciences is recovery of the earth's gravity field. orbits of satellites either gravimetric or nongravimetric are analyzed to improve the earth's gravity field. gravimetric satellites are launched at low altitudes to observe gravity field in more detail. grace twin satellites are the second spacecra...
متن کاملGrace
whence she had come nor whither she was bound, for she had no record of any kind with her. When she was questioned her vocabulary seemed to consist solely of head shakings and a few utterly unintelligible syllables. It is not recorded how Grace happened to be thrust into a second grade that first day. But it was the second grade teacher who began to complain, a few days later, of "that little n...
متن کاملGRACE, time-varying gravity, Earth system dynamics and climate change.
Continuous observations of temporal variations in the Earth's gravity field have recently become available at an unprecedented resolution of a few hundreds of kilometers. The gravity field is a product of the Earth's mass distribution, and these data-provided by the satellites of the Gravity Recovery And Climate Experiment (GRACE)-can be used to study the exchange of mass both within the Earth ...
متن کاملGerald Grace
The death of Mr. Gerald Grace took place in South Africa as the result of a singularly tragic incident on Sept. 17th. For some time the Witwatersrand had been terrorised by a band of desperadoes. Mr. Grace was travelling on the Witwatersrand reef in a motor-car resembling that in which the gang was believed to be escaping. The police challenged the car, but, according to the account in the Rand...
متن کاملA Message From Dr Grace Dammann about States of Grace
P eople have asked me how I decided to participate in the film States of Grace. When we started, I'd been in the hospital for well over a year, and I thought, " Of course this makes sense. " My attitude toward pretty much everything that comes my way in life is to just say " yes " and pick up the pieces. So my attitude was Just say " yes " because you've had an incredible experience—both becaus...
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ژورنال
عنوان ژورنال: Nature
سال: 1991
ISSN: 0028-0836,1476-4687
DOI: 10.1038/350268d0