Modelling the 3D geometry of the Dinantian carbonate geothermal reservoir in northern France

2021 ◽  
Author(s):  
Aurore Laurent ◽  
Laurent Beccaletto ◽  
Olivier Averbuch ◽  
Fabien Graveleau ◽  
Frédéric Lacquement ◽  
...  
Keyword(s):  
Geothermal Reservoir ◽  
Northern France ◽  
3D Geometry

3D geometry and kinematics of the Northern Variscan Thrust Front in Northern France: new insights based on reprocessing and interpretation of seismic reflection profiles.

2021 ◽  
Author(s):  
Aurore Laurent ◽  
Olivier Averbuch ◽  
Laurent Beccaletto ◽  
Fabien Graveleau ◽  
Frédéric Lacquement ◽  
...  
Keyword(s):  
Seismic Reflection ◽  
Foreland Basin ◽  
Northern France ◽  
Thrust Front ◽  
3D Geometry ◽  
Mountain Front ◽  
Thrust Zone ◽  
Seismic Reflection Profiles ◽  
Nw Europe ◽  
Geometry And Kinematics

<p>In NW Europe, the Upper Carboniferous Variscan collision between Avalonia and the Armorica-Gondwana accretion complex led to the progressive tectonic inversion of the southern Avalonian margin and the development of a crustal-scale north-vergent thrust system propagating outward from the Late Mississippian to the Middle Pennsylvanian (330-305 Ma). The northern Variscan thrust front spreads over 2,000 km across NW Europe. In the Nord-Pas-de-Calais (NPC) coal district area (northern France), its 3D geometry and kinematics have been investigated through the reprocessing and interpretation of 532 km in length of industrial seismic reflection profiles acquired in the 1980s. The seismic interpretations point out the major compressional and extensional tectonic features affecting this fossil, deeply eroded, mountain front, highlighting its very atypical structure and kinematics.</p><p>The deformation front is characterized by a main frontal thrust zone localizing most of the northward displacement (i.e. several tens of kilometers) of the Ardennes Allochthonous Unit above the slightly-deformed part of the Avalonian margin, referred to as the Brabant Para-autochthonous Unit. This large displacement induced the underthrusting of the molassic foreland basin (NPC coal basin) over nearly 20 km and was associated to the out-of-sequence dislocation of the mountain front. The underthrust Brabant Para-autochthonous Unit, made of both the Namurian-Westphalian (330-305 Ma) molassic foreland basin and the underlying Mid-Upper Devonian (390-360 Ma) and Dinantian (360-330 Ma) carbonate platform, is deformed by a series of second-order north-vergent thrust faults, often associated with ramp-related folds. These thrust faults are rooted in décollement zones located either at the transition between the Namurian shales and the Dinantian carbonates or in the Famennian shales.</p><p>The 3D integration of the seismic interpretations led to the characterization of a major lateral ramp oriented NW-SE, affecting both the main frontal thrust zone and the basal thrust of some Overturned Thrust Sheets developed at its footwall. This lateral ramp represents a major zone of relay along the thrust front, in between two major segments, oriented respectively ENE-WSW to the east and WNW-ESE to the west. At the base of the underthrust Brabant Para-autochthonous Unit, the Mid-Upper Devonian platform is shown to be structured by synsedimentary normal faults responsible for the southward deepening and thickening of the southern Avalonian margin. These faults are oriented along two main directions i.e. N060-080° and N110-130°, that is the general orientation of the future Variscan structures. Overall, the results indicate that the Devonian pre-structuration of the southern Avalonian margin exerted a primary control on the dynamics and segmentation of the Northern Variscan Front in northern France by localizing both the frontal and lateral ramps within the thrust wedge.</p>

Use of Magnetic Resonance Imaging (MRI) to Determine the 3D Geometry in the Human Rectum

Endoscopy ◽  
2004 ◽  
Vol 36 (10) ◽  
Author(s):  
BP McMahon ◽  
JB Frøkjær ◽  
A Bergmann ◽  
DH Liao ◽  
E Steffensen ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
3D Geometry ◽  
Human Rectum ◽  
Magnetic Resonance Imaging Mri

A Study on Utilization of Three-Dimensional Sensor Lip Image for Developing a Pronunciation Recognition System

2019 ◽  
Vol 63 (5) ◽  
pp. 50402-1-50402-9 ◽  
Author(s):  
Ing-Jr Ding ◽  
Chong-Min Ruan
Keyword(s):  
Principal Component Analysis ◽  
Automatic Speech Recognition ◽  
Feature Fusion ◽  
Three Dimensional ◽  
Principal Component ◽  
Recognition System ◽  
Geometrical Characteristics ◽  
3D Geometry ◽  
Different Types ◽  
The Disabled

Abstract The acoustic-based automatic speech recognition (ASR) technique has been a matured technique and widely seen to be used in numerous applications. However, acoustic-based ASR will not maintain a standard performance for the disabled group with an abnormal face, that is atypical eye or mouth geometrical characteristics. For governing this problem, this article develops a three-dimensional (3D) sensor lip image based pronunciation recognition system where the 3D sensor is efficiently used to acquire the action variations of the lip shapes of the pronunciation action from a speaker. In this work, two different types of 3D lip features for pronunciation recognition are presented, 3D-(x, y, z) coordinate lip feature and 3D geometry lip feature parameters. For the 3D-(x, y, z) coordinate lip feature design, 18 location points, each of which has 3D-sized coordinates, around the outer and inner lips are properly defined. In the design of 3D geometry lip features, eight types of features considering the geometrical space characteristics of the inner lip are developed. In addition, feature fusion to combine both 3D-(x, y, z) coordinate and 3D geometry lip features is further considered. The presented 3D sensor lip image based feature evaluated the performance and effectiveness using the principal component analysis based classification calculation approach. Experimental results on pronunciation recognition of two different datasets, Mandarin syllables and Mandarin phrases, demonstrate the competitive performance of the presented 3D sensor lip image based pronunciation recognition system.

Did French Architects, Builders, Stonemasons, and Sculptors Operate in the Hungarian Kingdom in the Second Half of the 12th Century and in the 13th Century?

Mediaevistik ◽  
2018 ◽  
Vol 31 (1) ◽  
pp. 115-132
Author(s):  
Michalina Duda ◽  
Sławomir Jóźwiak ◽  
Marcin Wiewióra
Keyword(s):  
Interdisciplinary Research ◽  
Art History ◽  
13Th Century ◽  
Research History ◽  
Northern France ◽  
Early Appearance ◽  
12Th Century ◽  
Villard De Honnecourt

Abstract Thanks to the wide use of the fruits of interdisciplinary research (history, archaeology, and art history) and a thorough analysis of written and architectural sources, it can be clearly demonstrated that, from at least as early as the end of the 12th century, architects, builders, stonemasons and probably also sculptors from what is now northern and eastern France were operating in the Kingdom of Hungary (though it is not known to what extent). It is impossible not to see a correlation between their activity and the very early appearance of the Gothic style in the territory of what was then Hungary. The architect–builder–designer–sketcher Villard de Honnecourt of Picardy, northern France, and his stay on the shores of the Danube are of particular interest. He was there most probably in the 1220s, but it is unfortunately difficult to say for certain which of the edifices he worked on considering those that were erected at the time in the Kingdom of Hungary.

Sign in / Sign up

Export Citation Format

Share Document