The preliminary reference Earth model (PREM) plots the average of Earth's properties by depth. It includes a table of Earth properties, including elastic...
3 KB (256 words) - 13:49, 29 July 2024
#2" A. M. Dziewonski, D. L. Anderson (1981). "Preliminary reference Earth model" (PDF). Physics of the Earth and Planetary Interiors. 25 (4): 297–356. Bibcode:1981PEPI...
32 KB (3,826 words) - 10:21, 3 June 2025
the Earth is the size and shape used to model planet Earth. The kind of figure depends on application, including the precision needed for the model. A...
25 KB (2,946 words) - 21:41, 7 May 2025
earth is one theory by reason of density gradient. A popular model for the density gradient of Earth is one given by the Preliminary Reference Earth Model...
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Lower mantle (redirect from Lower mantle (Earth))
between the transition zone and the outer core. The preliminary reference Earth model (PREM) separates the lower mantle into three sections, the uppermost...
14 KB (1,774 words) - 06:34, 4 June 2025
Dziewoński, Adam M.; Anderson, Don L. (1981). "Preliminary reference Earth model". Physics of the Earth and Planetary Interiors. 25 (4): 297–356. Bibcode:1981PEPI...
61 KB (7,216 words) - 03:45, 5 June 2025
equation), is given in the Preliminary Reference Earth Model (PREM). Using this, the real gravitational binding energy of Earth can be calculated numerically...
10 KB (1,512 words) - 14:46, 17 May 2025
development of the Preliminary reference Earth model (PREM) in collaboration with Don Anderson; PREM established an accurate radial model of the Earth for seismic...
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P wave (section Seismic waves in the Earth)
Dziewonski, Adam M.; Anderson, Don L. (1981). "Preliminary reference Earth model". Physics of the Earth and Planetary Interiors. 25 (4): 297–356. Bibcode:1981PEPI...
10 KB (1,051 words) - 10:49, 29 May 2025
Adams–Williamson equation (category Structure of the Earth)
property. It is an important part of models of the Earth's interior such as the Preliminary reference Earth model (PREM). Williamson and Adams first developed...
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concept of elevated love Preliminary Reference Earth Model, a commonly used 1 D reference model for the structure of the Earth Colloquial name for the...
6 KB (789 words) - 21:09, 21 May 2025
Geodynamics (section Numerical modeling)
Dziewonski, A. M. and D. L. Anderson (1981). "Preliminary reference Earth model." Physics of the Earth and Planetary Interiors 25(4): 297-356. Ribe, N...
14 KB (1,791 words) - 22:46, 4 May 2025
The Earth Gravitational Models (EGM) are a series of geopotential models of the Earth published by the National Geospatial-Intelligence Agency (NGA)....
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Gravity train (redirect from Hole through the earth)
the realistic density distribution inside the Earth, as known from the preliminary reference Earth model, the expected fall-through time is reduced from...
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Geophysics (redirect from Earth physics)
The main model for the radial structure of the interior of the Earth is the preliminary reference Earth model (PREM). Some parts of this model have been...
49 KB (5,248 words) - 18:19, 1 June 2025
S2CID 206512830. Dziewonski, A.; Anderson, D. L. (1981). "Preliminary reference Earth model" (PDF). Physics of the Earth and Planetary Interiors. 25 (4): 297–356. Bibcode:1981PEPI...
44 KB (2,637 words) - 09:04, 25 May 2025
the Preliminary reference Earth model. Dziewonski, Adam M.; Anderson, Don L. (1981-06-01). "Preliminary reference Earth model". Physics of the Earth and...
1 KB (208 words) - 06:47, 19 August 2021
Dziewonski, Adam M.; Anderson, Don L. (June 1981). "Preliminary reference Earth model". Physics of the Earth and Planetary Interiors. 25 (4): 297–356. doi:10...
15 KB (1,902 words) - 19:06, 29 November 2024
Anderson (American, 1933–2014) – seismology and Earth's interior (including the Preliminary reference Earth model); Crafoord Prize Nigel Anstey (British, 1927–...
32 KB (3,340 words) - 16:31, 10 April 2025
the Earth's velocity structure. Their work laid the foundation for the Preliminary Reference Earth Model in 1981, a significant step toward modeling the...
83 KB (7,566 words) - 00:59, 16 June 2025
Core–mantle boundary (category Structure of the Earth)
Dziewonski, Adam M.; Anderson, Don L. (1981-06-01). "Preliminary reference Earth model". Physics of the Earth and Planetary Interiors. 25 (4): 297–356. Bibcode:1981PEPI...
9 KB (943 words) - 10:36, 13 September 2024
Don L. Anderson (category Articles needing additional references from February 2021)
currents in the Earth's mantle using seismological methods. These studies led to the development of the Preliminary Reference Earth Model (PREM), which...
25 KB (2,717 words) - 21:52, 15 May 2025
Seismic tomography (category Structure of the Earth)
Dziewonski, Adam M.; Anderson, Don L. (1981-06-01). "Preliminary reference Earth model". Physics of the Earth and Planetary Interiors. 25 (4): 297–356. Bibcode:1981PEPI...
54 KB (6,141 words) - 06:52, 16 June 2025
geocentric model (also known as geocentrism, often exemplified specifically by the Ptolemaic system) is a superseded description of the Universe with Earth at...
74 KB (8,585 words) - 04:09, 26 May 2025
Copernican heliocentrism (redirect from Copernican model)
astronomical model developed by Nicolaus Copernicus and published in 1543. This model positioned the Sun at the center of the Universe, motionless, with Earth and...
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Earth System Modeling Framework (ESMF) is open-source software for building climate, numerical weather prediction, data assimilation, and other Earth...
9 KB (1,150 words) - 09:19, 12 March 2025
on the radius (such as the Preliminary Reference Earth Model or PREM) with a 3-D refinement for the emission from the Earth's crust is generally sufficient...
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Philippines Earth 2008 Candidates Miss Philippines Earth 2008 Preliminary Activities Official Website Lil' Earth Angels Official Website Mabuhay Beauties...
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Lanyue (section Earth-Moon trajectory design)
back into lunar orbit in their spacecraft and subsequently, to Earth. The preliminary plan describes a 'landing segment' that consists of a new lunar-lander...
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Schumann resonances (redirect from Earth-ionosphere cavity resonance)
a set of spectral peaks in the extremely low frequency portion of the Earth's electromagnetic field spectrum. Schumann resonances are global electromagnetic...
55 KB (6,140 words) - 03:25, 11 June 2025