Results 31 to 40 of about 4,870 (127)

Forward and inverse three-dimensional P wave velocity models of the southern California crust [PDF]

open access: yes, 1992
We construct a three-dimensional P wave velocity model of the southern California crust by combining existing one-dimensional models, each describing a region defined by surface geology, and calibrate the model with travel times from three explosions ...
Jones, Craig   +2 more
core   +1 more source

STEREO REleASE+: Adding Robustness to Solar Proton Event Forecasting in the Heliosphere by Means of Automated Recognition of Type‐III Radio Bursts

open access: yesSpace Weather, Volume 23, Issue 12, December 2025.
Abstract This work reports on the real‐time implementation of a local solar proton event forecasting system at the Solar Terrestrial Relations Observatory—Ahead (STEREO‐A) spacecraft, namely STEREO REleASE+. The forecasting uses the finding that relativistic electrons provide the “earliest indication” that a solar particle event has started, arriving ...
Arik Posner   +7 more
wiley   +1 more source

Problem footprints in Magellan altimetry data [PDF]

open access: yes
The intensity, time-delay, and frequency content of radar echoes from the Magellan altimetry system are reduced to several parameters that are of great use in addressing many geological issues of the surface of Venus.
Plaut, Jeffrey J.
core   +1 more source

Modelling fire occurrence at regional scale. Does vegetation phenology matter? [PDF]

open access: yes, 2015
Through its influence on biomass production, climate controls fuel availability affecting at the same time fuel moisture and flammability, which are the main determinants for fire ignition and propagation.
Bajocco, Sofia   +2 more
core   +1 more source

Wrinkle ridges on Venusian plains: Indicators of shallow crustal stress orientations at local and regional scales [PDF]

open access: yes
The plains regions of Venus exhibit a complex array of structural features, including deformation belts of various types, wrinkle ridges, grabens, and enigmatic radar-bright linears. Probably the most pervasive of these structures are the wrinkle ridges,
Mcgill, George E.
core   +1 more source

Quaternary Sanukitoid-like Andesites Generated by Intracrustal Processes (Chacana Caldera Complex, Ecuador): Implications for Archean Sanukitoids [PDF]

open access: yes, 2017
High-Mg diorites enriched in incompatible elements and their extrusive equivalents are rare subduction-related rock types that have been found in modern arc settings and in Late Archean sequences, where they are associated with trondhjemite-tonalite ...
Beate, Bernardo   +2 more
core  

Electro-Magnetic Earthquake Bursts and Critical Rupture of Peroxy Bond Networks in Rocks

open access: yes, 2006
We propose a mechanism for the low frequency electromagnetic emissions and other electromagnetic phenomena which have been associated with earthquakes. The mechanism combines the critical earthquake concept and the concept of crust acting as a charging ...
Allègre   +158 more
core   +1 more source

Extensive lava flow fields on Venus: Preliminary investigation of source elevation and regional slope variations [PDF]

open access: yes
Large-volume lava flow fields have been identified on Venus, the most areally extensive of which are known as fluctus and have been subdivided into six morphologic types.
Head, James W., III   +2 more
core   +1 more source

Melting and differentiation in Venus with a cold start: A mechanism of the thin crust formation [PDF]

open access: yes
Recent works argue that the venusian crust is thin: less than 10-30 km. However, any convective model of Venus unavoidably predicts melting and a fast growth of the basaltic crust, up to its maximum thickness of about 70 km limited, by the gabbro ...
Solomatov, Viatcheslav S.   +1 more
core   +1 more source

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