4/16/2023 0 Comments Flex2d geodynamics![]() ![]() Although the rheologic properties of the lithosphere (flexural rigidity) and sublithospheric flows can profoundly modify the flexural profiles, the celerity and style of thrusting, as well as the amount of deformation involved and surface mass transport in the tectonic wedge, strongly influence depozone configurations. ![]() This long-wavelength topography and subsidence are responses to subcrustal/sublithospheric gravitational loads caused by variability in the thermal state or composition of the asthenospheric wedge or subducted plate, or by coupling of the continental lithosphere to the circulating asthenosphere. Within retro-forelands, independent “long-wavelength” architecture driven by “dynamic topography” overlaps with this simple foreland segmentation. This topographic segmentation and subsidence are generated by flexure of the lithosphere in response to crustal gravitational loads. This segmentation is, however, continuous and interpreted to represent the lithospheric response to certain stress conditions. In South America, for example, the depozones 3 and 4 can be considered to be pericratonic depocenters, because of their tectonic position bordering the cratonic shields. This “short-wavelength” topographic segmentation (commonly <300 km) forms a set of subbasins ( Figure 1) that, from proximal areas to the distal foreland, are: (1) the wedge-top depozone passively overlying and interacting with the deforming thrust wedge (2) the foredeep, immediately adjacent to the main tectonic load and accommodating the bulk of the synorogenic deposits (3) the forebulge, a positive flexural deflection generated by upward lithospheric bending and can alternatively accommodate relatively condensed sections or be erosional and (4) the back-bulge depozone, that is a shallow and broad trough separating the active forebulge from the craton and accommodating thin distal stratigraphies. The most evident topographic segmentation results when orogenic loading, due to thrusts stacking, occurs. The accommodation spaces can be produced by the interaction of different loads or locally amplified by uplifting of morphological barriers, mainly in intermontane landscapes. new developments and results for space-to-ground observation technology.Retroarc foreland basins are regions of crustal subsidence where stratigraphic accommodation and subsequent preservation are linked to tectonic and dynamic processes.new results for satellite gravity measurements,.new results from crustal movement and deformation studies based on geologic, hydrological, and geophysical theories and methods,.new techniques and achievements in earthquake prediction using geodetic theories and methods,.new results for monitoring and studying crustal movement and deformation using geodetic theories and methods,.This journal primarily publishes novel research achievements in the field of Geodesy, Geodynamics, and disaster science and so on. Its aim is to promote a combination of Geodesy and Geodynamics, encourage the application of Geodesy in the field of Geoscience, and facilitate scientific research activity from the entire world. Geodesy and Geodynamics is committed to the publication of high-quality scientific papers in English in the fields of Geodesy and Geodynamics from authors around the world. This journal is jointly sponsored by the Institute of Seismology, China Earthquake Administration, Science Press, and six other agencies. Aims & Scope Geodesy and Geodynamics, launched in October, 2010, is a bimonthly publication.
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