Results 91 to 100 of about 7,335 (218)

Relationship between tectonic overpressure, deviatoric stress, driving force, isostasy and gravitational potential energy [PDF]

open access: yes, 2017
We present analytical derivations and 2-D numerical simulations that quantify magnitudes of deviatoric stress and tectonic overpressure (i.e. difference between the pressure, or mean stress, and the lithostatic pressure) by relating them to lateral ...
Lechmann, Sarah M.   +3 more
core  

Insights Into Intraplate Stresses and Geomorphology in the Southeastern United States

open access: yesGeophysical Research Letters, 2019
The stress field in the eastern United States is commonly considered to be broadly uniform and due to homogeneous far‐field forces; however, modern and geologic stress indicators in this region show substantial heterogeneity.
Benjamin S. Murphy   +2 more
doaj   +1 more source

A dynamic model of Venus's gravity field [PDF]

open access: yes
Unlike Earth, long wavelength gravity anomalies and topography correlate well on Venus. Venus's admittance curve from spherical harmonic degree 2 to 18 is inconsistent with either Airy or Pratt isostasy, but is consistent with dynamic support from mantle
Bills, B. G.   +3 more
core   +1 more source

3-D numerical model of the flexural isostatic response to extension induced by crustal scale listric normal faulting [PDF]

open access: yesGeofísica Internacional, 2003
The flexural isostatic response of the lithosphere, induced by listric normal faulting, is modeled by assuming that simple-shear extension takes place in the brittle upper crust while the lower crust and upper mantle extend in pure shear.
Juan García Abdeslem
doaj  

Crustal Structure in Alaska From Receiver Function Analysis

open access: yesGeophysical Research Letters, 2019
New maps of crustal thickness and Vp/Vs in Alaska and western Canada were obtained using P receiver functions recorded at 198 stations from the USArray Transportable Array and the Alaska Regional Network.
Ying Zhang, Aibing Li, Hao Hu
doaj   +1 more source

Topographic features around Syowa Station as viewed from the gravity measurements -Some implications on the bedrock topography under the ice sheet-

open access: yesAntarctic Record, 1984
The coefficients of the correlation between the reduced gravity anomaly and the bedrock height were calculated using gravity data in the Lutzow-Holm Bay region and the Mizuho Plateau, East Antarctica.
Toshiyasu Nagao
doaj   +1 more source

Differential extension and dynamic model of the deep-water area of the Pearl River Mouth Basin, northern South China Sea

open access: yesJournal of Natural Gas Geoscience, 2017
Based on the flexural-cantilever model and flexural isostasy model, three independent quantitative methods have been used to calculate the stretching factors of the upper crust, whole crust, and whole lithosphere in the deep-water area of the Pearl River
Caili Lü   +3 more
doaj   +1 more source

Satellite magnetic modeling of north African hot spots [PDF]

open access: yes
The primary objectives of the MAGSAT mission was to measure the intensity and direction of magnetization of the Earth's crust. A significant effort was directed to the large crustal anomalies first delineated by the POGO mission.
Brown, C. R., Phillips, R. J.
core   +1 more source

Multiscale Modeling of Glacial Loading by a 3D Thermo-Hydro-Mechanical Approach Including Erosion and Isostasy

open access: yesGeosciences, 2019
We present a computational framework that allows investigating the Thermo-Hydro- Mechanical response of a representative part of a sedimentary basin during a glaciation cycle.
Daniele Cerroni   +5 more
doaj   +1 more source

Comparisons of global topographic/isostatic models to the Earth's observed gravity field [PDF]

open access: yes
The Earth's gravitational potential, as described by a spherical harmonic expansion to degree 180, was compared to the potential implied by the topography and its isostatic compensation using five different hypothesis.
Rapp, Richard H.   +3 more
core   +1 more source

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