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2.5D seismic velocity modelling in the south-eastern Romanian Carpathians Orogen and its foreland

Andrei Bocin, Randell Stephenson, Ari Tryggvason, Ionelia Panea, Victor Mocanu, Franz Hauser, Liviu Matenco
2005 Tectonophysics  
A high resolution 2.5D velocity model of the upper crust along the seismic profile has been determined from a tomographic inversion of the DACIA-PLAN first arrival data.  ...  The DACIA-PLAN profile is about 140 km long, having a roughly WNW-ESE direction, from near the southeast Transylvanian Basin, across the mountainous southeastern Carpathians and their foreland to near  ...  Acknowledgements The authors of this paper represent only a subset of those who worked on the acquisition, processing, and modelling of the DACIA-PLAN seismic dataset or who facilitated this work, including  ... 
doi:10.1016/j.tecto.2005.05.045 fatcat:ozqjoffd4jcmfatdfpycsjorhy

3D Triangular Mesh Parameterization with Semantic Features Based on Competitive Learning Methods

S. MATSUI, K. AOKI, H. NAGAHASHI
2008 IEICE transactions on information and systems  
Most of the previous approaches made use of an identical primitive domain to parameterize a mesh model.  ...  This paper proposes a novel approach for parameterizing a mesh into another one directly. The main idea of our method is to combine a competitive learning and a least-square mesh techniques.  ...  A more general approach is to parameterize the meshes onto a common base mesh [11] - [14] .  ... 
doi:10.1093/ietisy/e91-d.11.2718 fatcat:lckao275lbbhhbjgsq6p7nofem

Airborne LiDAR Point Cloud Filtering by a Multilevel Adaptive Filter Based on Morphological Reconstruction and Thin Plate Spline Interpolation

Xiangshuang Meng, Yi Lin, Lei Yan, Xianlian Gao, Yunjun Yao, Cheng Wang, Shezhou Luo
2019 Electronics  
To improve the filtering effect in complex terrain, a multilevel adaptive filter (MAF) combining morphological reconstruction and thin plate spline (TPS) interpolation is proposed.  ...  terrain gradient as a compensation.  ...  At each level, a DSM and a DEM are generated based on the TPS interpolation. In each iteration, the mask image is subtracted from the reconstructed result to produce a normalized DSM (nDSM).  ... 
doi:10.3390/electronics8101153 fatcat:de5bqwsbvrgtbgra62pbuwbx6i

Local Time-Stepping for Explicit Discontinuous Galerkin Schemes [chapter]

Gregor Gassner, Michael Dumbser, Florian Hindenlang, Claus-Dieter Munz
2011 Computational Fluid Dynamics 2010  
A class of explicit discontinuous Galerkin schemes is described which time approximation is based on a predictor corrector formulation.  ...  The approximation at the new time level is obtained in one step with use of the information from the direct neighbors only.  ...  Acknowledgements Financial support from the Deutsche Forschungsgemeinschaft (German Research Association) through grant GSC 111 is gratefully acknowledged.  ... 
doi:10.1007/978-3-642-17884-9_19 fatcat:ydan2psyffc23othhziaotksxu

Capturing stratigraphic and sedimentological complexity from submarine channel complex outcrops to digital 3D models, Karoo Basin, South Africa

J. K. Pringle, R. L. Brunt, D. M. Hodgson, S. S. Flint
2010 Petroleum Geoscience  
two large-scale outcrops, one base of slope, high sandstone content system (Unit B) and one from a mid-slope, more mixed lithology system (Unit C), in the Laingsburg Formation, Karoo Basin, South Africa  ...  Thin-bedded channel margin lithofacies are preserved through the lateral stepping of channels and allow the correlation of stratigraphy from channel axis to margin and on to overbank areas.  ...  shallow level, normally a maximum penetration of 10 m below ground level.  ... 
doi:10.1144/1354-079309-028 fatcat:unowu7efjrantbhihxjr5mlwzq

Digital surface model generation from multiple optical high-resolution satellite images

Lionel Matteo, Yuliya Tarabalka, Isabelle Manighetti, Lorenzo Bruzzone, Francesca Bovolo, Jon Atli Benediktsson
2018 Image and Signal Processing for Remote Sensing XXIV  
This allows reconstruction of high-resolution (30-70 cm) topography from the satellite data. However, numerous areas on the Earth exhibit complex topography with a lot of "discontinuities".  ...  Built with common approaches (stereo or tri-stereo), a digital surface model (DSM) would not recover the topography in these masked zones.  ...  The surface measurement and reconstruction from a pair of images is then formulated as an energy minimization task.  ... 
doi:10.1117/12.2325135 fatcat:v7o3f4hbenhpdicxkg66nc7sza

Seamless Navigation, 3D Reconstruction, Thermographic and Semantic Mapping for Building Inspection

Adrian Schischmanow, Dennis Dahlke, Dirk Baumbach, Ines Ernst, Magdalena Linkiewicz
2022 Sensors  
By fusing the terrestrial dataset with additional geographic information from an unmanned aerial vehicle, we gain a complete building hull point cloud and automatically reconstruct a semantic 3D model.  ...  A challenging calibration approach is used to geometrically calibrate and pixel-co-register the trifocal camera system.  ...  [33] align a 3D model based on RGB images and a model based on thermal sensor data with scale normalization.  ... 
doi:10.3390/s22134745 pmid:35808239 pmcid:PMC9268807 fatcat:h2ckofkmpja23f2zs2qpkywjfu

Digital outcrop modelling using "structure-from- motion" photogrammetry: Acquisition strategies, validation and interpretations to different sedimentary environments

Andrés Bilmes, Leandro D'Elia, Luciano Lopez, Sebastián Richiano, Augusto Varela, María del Pilar Alvarez, Joaquín Bucher, Inés Eymard, Martín Muravchik, Juan Franzese, Daniel Ariztegui
2019 Journal of South American Earth Sciences  
Structure from Motion-Multi-View Stereo (SfM-MVS) is a relatively new technique that is being adopted in the analysis of sedimentary systems.  ...  Questions include: (i) geometrical restoration of a growth strata succession associated with thrust systems; (ii) stacking patterns of littoral ridges during a relative sea-level fall after the Holocene  ...  Our results show that the SfM-MVS technique is a robust approach to collect data from areas with difficult access as well as to increase the precision and sample size of direct measurements from an outcrop  ... 
doi:10.1016/j.jsames.2019.102325 fatcat:6e3hyc5wabhvrjgbnhhakjelg4

An energy-preserving level set method for multiphase flows [article]

N. Valle, F.X. Trias, J. Castro
2019 arXiv   pre-print
The new scheme ensures conservation of mechanical energy (i.e., surface plus kinetic) up to temporal integration. Inviscid numerical simulations are performed to show the robustness of such a method.  ...  The computation of multiphase flows presents a subtle energetic equilibrium between potential (i.e., surface) and kinetic energies.  ...  Γ r c + r c − c + c − Interface Reconstruction Surface reconstruction may start by defining the interface normal.  ... 
arXiv:1909.01114v1 fatcat:lirjpg2clfbjdojxrsa5mh2w3e

Structural health assessment of Puente del Inca natural monument using the integration of instruments and technologies

E. Lannutti, M.G. Lenzano, J. Barón, S. Moragues, L. Lenzano
2020 Cuadernos de Investigación Geográfica = Geographical Research Letters  
inspection, accretion-erosion rate measurements, hydrothermal flow characterization, ground-penetrating radar, soil dielectric sensor, Global Navigation Satellite System, laboratory testing, Structure from  ...  Puente del Inca is a natural monument standing over the Cuevas river in Mendoza, Argentina. The bridge currently exhibits structural deterioration due to natural and anthropic factors.  ...  to preserve and restore the natural monument.  ... 
doi:10.18172/cig.4390 fatcat:4rdfe2nryvhe7lnzdmnxspw3ua

Ecogeographically and Non-Ecogeographically Forecasting Discontinuous Canopied Simulium damnosum s.l. Habitats by Interpolating Metrizable Sub-Mixel Mean Solar Exoatmospheric Quantum Scalar Irradiance where θi is a Zenith Angle and Diatomically Etiolated Xanthophylls with Azimutually Isotropic Sources of Chloroplastic Carotenoid Zeaxanthins Spectrally Extracted from a Decomposed RapidEye™ Red Edge Normalized Difference Vegetation Index Reference Targeted Biosignature: A Case Study in Burkina Faso and Uganda

Benjamin G. Jacob, Robert J.Novak
2015 Journal of Remote Sensing & GIS  
JRSG, an open access journal analyzing canopy negative LULC surfaces by querying attribute values at a geolocation on the surface, for analyzing the visibility of parts of the surface from different landscape  ...  Multiple, deterministic approaches based on diverse representations of light interactions with canopy plant leaves have been developed in ArcGIS [2].  ...  The DGPS ground coordinates were acquired from a CSI max receiver which has a positional accuracy of +/-.178 (84) .  ... 
doi:10.4172/2469-4134.1000152 fatcat:gpqnvnehhvfchajg3rx5i6hije

Delayed extensive brain edema caused by the growth of a giant basilar apex aneurysm treated with basilar artery obliteration: a case report

Daniel García-Pérez, Irene Panero, Carla Eiriz, Luis Miguel Moreno, Pablo M. Munarriz, Igor Paredes, Alfonso Lagares, José F. Alén
2020 BMC Neurology  
Delayed growth of a surgically treated and thrombosed giant aneurysm from wall dissection demonstrates that discontinuity with the initial parent artery does not always prevent progressive enlargement.  ...  We performed a proximal surgical basilar artery occlusion on a 64-year-old female with a partially thrombosed giant BA aneurysm.  ...  A left robust PCoA was observed (red arrow in f).  ... 
doi:10.1186/s12883-020-01819-9 pmid:32505180 fatcat:kwee2xiduffwnjr6aar4kkrpay

Classification via score-based generative modelling [article]

Yongchao Huang
2022 arXiv   pre-print
classification performance, and robustness to perturbations, particularly in high dimensions and imbalanced situations.  ...  In this work, we investigated the application of score-based gradient learning in discriminative and generative classification settings.  ...  from the true DGP).  ... 
arXiv:2207.11091v1 fatcat:y65mouqft5g7tnslbr4dsitczu

Chemostratigraphic implications of spatial variation in the Paleocene-Eocene Thermal Maximum carbon isotope excursion, SE Bighorn Basin, Wyoming

Allison A. Baczynski, Francesca A. McInerney, Scott L. Wing, Mary J. Kraus, Jonathan I. Bloch, Doug M. Boyer, Ross Secord, Paul E. Morse, Henry C. Fricke
2013 Geochemistry Geophysics Geosystems  
The onset of the CIE in bulk organic matter at all six sections occurs within a single laterally extensive geosol. The magnitude of the CIE varies from 2.1 to 3.8%.  ...  1] The Paleocene-Eocene Thermal Maximum (PETM) is marked by a prominent negative carbon isotope excursion (CIE) of 3-5% that has a characteristic rapid onset, stable body, and recovery to near pre-CIE  ...  Multiple, high-resolution records across a field area with biostratigraphic and lithostratigraphic constraints can provide more robust identification of the PETM.  ... 
doi:10.1002/ggge.20265 fatcat:xezvwfjograg5mnwpilg7xldqi

Late-glacial lakes in the Thompson Basin, British Columbia: paleogeography and evolution

Timothy F Johnsen, Tracy A Brennand
2004 Canadian journal of earth sciences (Print)  
Une rupture finale de la digue de glace a causé un jökulhlaup~20 km 3 qui a érodé les fonds rocheux et a déposé des barres de tourbillons de crue dans le bassin du lac; cette masse d'eau s'est déplacée  ...  Les lacs glaciaires Thompson et Deadman avaient une forme rubanée (rapport largeur à longueur~3:100), ils étaient profonds (>> 140 à~50 m) et ils contenaient des volumes d'eau importants (84-24 km 3 ).  ...  Input from John Clague, Derald Smith, Timothy Fisher, Henry Mullins, and Robert Gilbert has greatly improved this paper. References  ... 
doi:10.1139/e04-074 fatcat:qbvf4fgon5dovdpn7zg366xvri
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