English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/120894
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Lithospheric structure of Venus from gravity and topography

AutorJiménez Díaz, Alberto ; Ruiz, Javier ; Kirby, Jon F.; Romeo, Ignacio; Tejero, Rosa ; Capote, Ramón
Palabras claveGeophysics
Terrestrial planets
Venus
Interior
Lithosphere
Fecha de publicación1-nov-2015
EditorElsevier
CitaciónIcarus, 260: 215–231 (2015)
ResumenThere are many fundamental and unanswered questions on the structure and evolution of the venusian lithosphere, which are key issues for understanding Venus in the context of the origin and evolution of the terrestrial planets. Here we investigate the lithospheric structure of Venus by calculating its crustal and effective elastic thicknesses (Tc and Te, respectively) from an analysis of gravity and topography, in order to improve our knowledge of the large scale and long-term mechanical behaviour of its lithosphere. We find that the venusian crust is usually 20–25 km thick with thicker crust under the highlands. Our effective elastic thickness values range between 14 km (corresponding to the minimum resolvable Te value) and 94 km, but are dominated by low to moderate values. Te variations deduced from our model could represent regional variations in the cooling history of the lithosphere and/or mantle processes with limited surface manifestation. The crustal plateaus are near-isostatically compensated, consistent with a thin elastic lithosphere, showing a thickened crust beneath them, whereas the lowlands exhibit higher Te values, maybe indicating a cooler lithosphere than that when the venusian highlands were emplaced. The large volcanic rises show a complex signature, with a broad range of Te and internal load fraction (F) values. Finally, our results also reveal a significant contribution of the upper mantle to the strength of the lithosphere in many regions.
Versión del editorhttp://dx.doi.org/10.1016/j.icarus.2015.07.020
URIhttp://hdl.handle.net/10261/120894
DOI10.1016/j.icarus.2015.07.020
Aparece en las colecciones: (IGEO) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
I_2015_260_215.pdf3,55 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.