Three-dimensional seismic imaging of the Costa Rica Accretionary Prism: Field program and migration examples

1991 ◽  
Vol 96 (B13) ◽  
pp. 21693-21712 ◽  
Author(s):  
Paul L. Stoffa ◽  
Thomas H. Shipley ◽  
Walter Kessinger ◽  
Donald F. Dean ◽  
Rigmor Elde ◽  
...  
Keyword(s):  
Costa Rica ◽  
Seismic Imaging ◽  
Three Dimensional ◽  
Accretionary Prism ◽  
And Migration

Analysis of migration paths in fast-ion conductors with Voronoi–Dirichlet partition

2006 ◽  
Vol 62 (6) ◽  
pp. 1010-1018 ◽  
Author(s):  
Vladislav A. Blatov ◽  
Gregory D. Ilyushin ◽  
Olga A. Blatova ◽  
Nataly A. Anurova ◽  
Alexej K. Ivanov-Schits ◽  
...  
Keyword(s):  
Alkali Metals ◽  
Three Dimensional ◽  
Charge Carriers ◽  
Alkali Cations ◽  
Fast Ion Conductors ◽  
And Migration ◽  
Crystal Space ◽  
Fast Ion ◽  
Dirichlet Partition ◽  
Ion Conductors

In terms of the Voronoi–Dirichlet partition of the crystal space, definitions are given for such concepts as `void', `channel' and `migration path' for inorganic structures with three-dimensional networks of chemical bonds. A number of criteria are proposed for selecting significant voids and migration channels for alkali cations Li+–Cs+ based on the average characteristics of the Voronoi–Dirichlet polyhedra for alkali metals in oxygen-containing compounds. A general algorithm to analyze the voids in crystal structures has been developed and implemented in the computer package TOPOS. This approach was used to predict the positions of Li+ and Na+ cations and to analyze their possible migration paths in the solid superionic materials Li3 M 2P3O12 (M = Sc, Fe; LIPHOS) and Na1 + x Zr2Si x P3 − x O12 (NASICON), whose framework structures consist of connected M octahedra and T tetrahedra. Using this approach we determine the most probable places for charge carriers (coordinates of alkali cations) and the dimensionality of their conducting sublattice with high accuracy. The theoretically calculated coordinates of the alkali cations in MT frameworks are found to correlate to within 0.33 Å with experimental data for various phases of NASICON and LIPHOS. The proposed method of computer analysis is universal and suitable for investigating fast-ion conductors with other conducting components.

Rhyl Field: developing a new structural model by integrating basic geological principles with advanced seismic imaging in the Irish Sea

2016 ◽  
Vol 8 (1) ◽  
pp. 355-371 ◽  
Author(s):  
Gavin Ward ◽  
Dean Baker
Keyword(s):  
Structural Model ◽  
Seismic Imaging ◽  
Critical Factor ◽  
Integrated Approach ◽  
Velocity Model ◽  
Irish Sea ◽  
Depth Migration ◽  
Processing Power ◽  
And Migration ◽  
Automated Quality Control

AbstractA new model of compression in the Upper Triassic overlying the Rhyl Field has been developed for the Keys Basin, Irish Sea. This paper highlights the significance of the overburden velocity model in revealing the true structure of the field. The advent of 3D seismic and pre-stack depth migration has improved the interpreter's knowledge of complex velocity fields, such as shallow channels, salt bodies and volcanic intrusions. The huge leaps in processing power and migration algorithms have advanced the understanding of many anomalous features, but at a price: seismic imaging has always been a balance of quality against time and cost. As surveys get bigger and velocity analyses become more automated, quality control of the basic geological assumptions becomes an even more critical factor in the processing of seismic data and in the interpretation of structure. However, without knowledge of both regional and local geology, many features in the subsurface can be processed out of the seismic by relying too heavily on processing algorithms to image the structural model. Regrettably, without an integrated approach, this sometimes results in basic geological principles taking second place to technology and has contributed to hiding the structure of the Rhyl Field until recently.

Seafloor structural observations, Costa Rica Accretionary Prism

1996 ◽  
Vol 23 (8) ◽  
pp. 883-886 ◽  
Author(s):  
Brian G. McAdoo ◽  
Daniel L. Orange ◽  
Eli A. Silver ◽  
Kirk McIntosh ◽  
Lon Abbott ◽  
...  
Keyword(s):  
Costa Rica ◽  
Accretionary Prism

scholarly journals Production, consumption, and migration of methane in accretionary prism of southwestern Taiwan

2017 ◽  
Vol 18 (8) ◽  
pp. 2970-2989 ◽  
Author(s):  
Nai‐Chen Chen ◽  
Tsanyao Frank Yang ◽  
Wei‐Li Hong ◽  
Hsuan‐Wen Chen ◽  
Hsiao‐Chi Chen ◽  
...  
Keyword(s):  
Accretionary Prism ◽  
Southwestern Taiwan ◽  
And Migration

scholarly journals Three-dimensional seismic imaging of the Rye Patch geothermal reservoir

1999 ◽  
Author(s):  
M. Feighner ◽  
R. Gritto ◽  
T.M. Daley ◽  
H. Keers ◽  
E.L. Majer
Keyword(s):  
Seismic Imaging ◽  
Three Dimensional ◽  
Geothermal Reservoir

scholarly journals Morpholithodynamics of lagoonal straits of the North-Eastern Sakhalin

2019 ◽  
pp. 79-94
Author(s):  
V. V. Afanasev
Keyword(s):  
Additional Data ◽  
Three Dimensional ◽  
Remote Sensing Data ◽  
Water Area ◽  
The North ◽  
North Eastern ◽  
Geological Information ◽  
History Of ◽  
Three Dimensional Models ◽  
And Migration

The results of the analysis of geospatial and geological information on the structure and dynamics of the lagoon coast of the North-Eastern Sakhalin are presented. On the basis of a number of parameters of the coastal erosion-accumulation processes and migration of lagoon straits during the period 1927–2014. the morpholithodynamics system of the North-Eastern Sakhalin was considered. The volume of sediments transported during the migration of the straits, was estimated with the help of three-dimensional models, in which, parallel with time-averaged areas of erosion and accumulation, additional data were used, namely: bathymetry of the straits and adjacent water area, characteristics of the relief of the barrier forms and geological information obtained as a result of georadar survey and drilling. Georadar data, together with remote sensing data, have made it possible to create a model of sedimentation, which formed the basis for the analysis of the history of the coast formation beyond the period of observations. Currently, we can trace the situation as long as to the middle of the XIXth century.

scholarly journals Topography and Three-Dimensional Structure Can Estimate Tree Diversity along a Tropical Elevational Gradient in Costa Rica

2018 ◽  
Vol 10 (4) ◽  
pp. 629 ◽  
Author(s):  
Chelsea Robinson ◽  
Sassan Saatchi ◽  
David Clark ◽  
Johanna Hurtado Astaiza ◽  
Anna Hubel ◽  
...  
Keyword(s):  
Costa Rica ◽  
Three Dimensional ◽  
Elevational Gradient ◽  
Tree Diversity ◽  
Dimensional Structure ◽  
Three Dimensional Structure

scholarly journals A Three dimensional Babcock-Leighton Solar Dynamo Model with Non-axisymmetric Convective Flows

2018 ◽  
Vol 13 (S340) ◽  
pp. 301-302
Author(s):  
Gopal Hazra ◽  
Mark S. Miesch
Keyword(s):  
Large Scale ◽  
Three Dimensional ◽  
Surface Flux ◽  
Dynamo Model ◽  
Turbulent Diffusivity ◽  
Flux Transport ◽  
Convective Flows ◽  
Solar Observations ◽  
Mean Fields ◽  
And Migration

AbstractThe observed convective flows on the photosphere (e.g., supergranulation, granulation) play a key role in the Babcock-Leighton (BL) process to generate large scale polar fields from sunspots fields. In most surface flux transport (SFT) and BL dynamo models, the dispersal and migration of surface fields is modeled as an effective turbulent diffusion. We present the first kinematic 3D FT/BL model to explicitly incorporate realistic convective flows based on solar observations. The results obtained are generally in good agreement with the observed surface flux evolution and with non-convective models that have a turbulent diffusivity on the order of 3 × 1012 cm2 s−1 (300 km2 s−1). However, we find that the use of a turbulent diffusivity underestimates the dynamo efficiency, producing weaker mean fields and shorter cycle.

Sign in / Sign up

Export Citation Format

Share Document