| DOI: | 10.1002/grl.50838
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| 论文题名: | New ultrahigh-resolution picture of Earth's gravity field |
| 作者: | Hirt C.; Claessens S.; Fecher T.; Kuhn M.; Pail R.; Rexer M.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8641
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| EISSN: | 1944-8372
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| 出版年: | 2013
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| 卷: | 40, 期:16 | | 起始页码: | 4279
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| 结束页码: | 4283
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| 语种: | 英语
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| 英文关键词: | Earth's gravity field
; gravity
; quasi-geoid
; ultrahigh resolution
; vertical deflections
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| Scopus关键词: | Committee on data for science and technologies
; Earth's gravity fields
; Gravity acceleration
; Parallel Computation
; quasi-geoid
; Scientific and engineering applications
; Ultrahigh resolution
; Vertical deflections
; Developing countries
; Gravitation
; acceleration
; computer simulation
; Earth
; geoid
; gravity field
; numerical model
; resolution
; satellite data
; Shuttle Radar Topography Mission
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| 英文摘要: | We provide an unprecedented ultrahigh resolution picture of Earth's gravity over all continents and numerous islands within ±60° latitude. This is achieved through augmentation of new satellite and terrestrial gravity with topography data and use of massive parallel computation techniques, delivering local detail at ~200 m spatial resolution. As such, our work is the first-of-its-kind to model gravity at unprecedented fine scales yet with near-global coverage. The new picture of Earth's gravity encompasses a suite of gridded estimates of gravity accelerations, radial and horizontal field components, and quasi-geoid heights at over 3 billion points covering 80% of Earth's land masses. We identify new candidate locations of extreme gravity signals, suggesting that the Committee on Data for Science and Technology standard for peak-to-peak variations in free-fall gravity is too low by about 40%. The new models are beneficial for a wide range of scientific and engineering applications and freely available to the public. Key Points Satellite, terrestrial and topographic gravity combined at ~200 m resolution Model covers all continents within SRTM data, and developing countries Gravity accelerations on Earth estimated to vary within ~7000 mGal, or 0.7 %.. © 2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883080182&doi=10.1002%2fgrl.50838&partnerID=40&md5=0245591e8305710dbc4e38a9d22565da
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/5905
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Western Australian Centre for Geodesy, Curtin University, GPO Box 1987, Perth, WA 6845, Australia
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| Recommended Citation: | |
Hirt C.,Claessens S.,Fecher T.,et al. New ultrahigh-resolution picture of Earth's gravity field[J]. Geophysical Research Letters,2013-01-01,40(16).
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