نتایج جستجو برای: for filtering the grace gravity solutions

تعداد نتایج: 18301662  

2006
R. Rietbroek P. LeGrand B. Wouters J.-M. Lemoine G. Ramillien C. W. Hughes

[1] Two time series of deep ocean bottom pressure records (BPRs) in between the Crozet Islands and Kerguelen are compared with GRACE (Gravity Recovery And Climate Experiment) equivalent water heights. An analysis of the correlation is performed for four time series: 1) monthly averages of the equivalent water height at the Crozet Islands, 2) the same near the Kerguelen Islands, 3) the mean of t...

Journal: :Remote Sensing 2017
Xinggang Zhang Shuanggen Jin Xiaochun Lu

The Gravity Recovery and Climate Experiment (GRACE) mission is able to observe the global large-scale mass and water cycle for the first time with unprecedented spatial and temporal resolution. However, no other time-varying gravity fields validate GRACE. Furthermore, the C20 of GRACE is poor, and no GRACE data are available before 2002 and there will likely be a gap between the GRACE and GRACE...

Journal: :فیزیک زمین و فضا 0
محمدعلی شریفی استادیار، گروه مهندسی نقشه برداری، پردیس دانشکده های فنی، دانشگاه تهران، ایران عبدالرضا صفری دانشیار، گروه مهندسی نقشه برداری، پردیس دانشکده های فنی، دانشگاه تهران، ایران بابک امجدی پرور دانشجوی کارشناسی ارشد ژئودزی، گروه مهندسی نقشه برداری، پردیس دانشکده های فنی، دانشگاه تهران، ایران

the earth’s gravity field dedicated missions, champ, grace and goce have opened up a new era for the study of the earth’s gravity field. the missions measure different functionals on the earth’s gravitational potential which are represented in terms of the stokes coefficients or the so-called geopotential models. the mapping process of the observations into the coefficients is called recovery o...

Journal: :Remote Sensing 2023

We compute the vertical displacements in Amazon Basin using Gravity Recovery and Climate Experiment (GRACE) GRACE Follow-On (GRACE-FO) observations, including both gravity spherical harmonic (SH) solutions from Center for Space Research (CSR), GeoForschungsZentrum (GFZ) Jet Propulsion Laboratory (JPL) mascons CSR, JPL Goddard Flight (GSFC). The correlation coefficients, annual amplitude root me...

Journal: :فیزیک زمین و فضا 0
محمدعلی شریفی استادیار، گروه مهندسی نقشه برداری، پردیس دانشکده های فنی، دانشگاه تهران، ایران زهره عرفانی جزی دانش آموخته کارشناسی ارشد ژئودزی، گروه مهندسی نقشه برداری، پردیس دانشکده های فنی، دانشگاه تهران، ایران

the gravity recovery and climate experiment (grace), twin satellites launched in march 2002, are making detailed measurements of the earth's gravity field. it will yield discoveries about gravity and the earth's natural systems. different sensors and instruments have been placed in the grace satellites to fulfill the primary scientific objective of the mission in mapping the earth’s g...

Journal: :E3S web of conferences 2023

The GRACE large-scale sequent GRACE-FO gravity satellite mission is providing monthly field solutions for almost 20 years enabling a unique opportunity to monitor mass variation processes. anomaly time series the Aral Sea region has been derived period of April 2002 January 2022. method determining from and improved by taking into account variations Caspian Sea. then compared estimates. For der...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم انسانی 1389

abstract amino acids are building blocks of proteins, and play a vital role in living beings existence and their functionality. the interaction of these compounds with metal ions is of great importance to biochemists, and chemists, because their functions can be utilized as a model in understanding enzymes mechanism for transport of metal ions to tissues. among twenty essential amino acids w...

2004
Lorenzo Iorio

In this paper we critically analyze the so far performed and proposed tests for measuring the general relativistic Lense-Thirring effect in the gravitational field of the Earth with some of the existing accurately tracked artificial satellites. The impact of the 2nd generation GRACE-only EIGEN-GRACE02S Earth gravity model and of the 1st CHAMP+GRACE+terrestrial gravity combined EIGEN-CG01C Earth...

Journal: :Water 2023

The Gravity Recovery and Climate Experiment (GRACE) its successor, the GRACE Follow-On (GRACE-FO) gravity satellite missions, have been providing monthly field solutions for almost 20 years, enabling a unique opportunity to monitor large-scale mass variation processes. anomaly time series Aral Sea region has obtained period of April 2002 January 2022. method determining from GRACE-FO improved b...

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