Multidisciplinary approach (geology, geomorphology, geomechanics, geomatics) for the characterization of the Blais Creek DsGSD (Monashee Mountains, BC, Canada)
Notice bibliographique
Résumé
Field investigations, including detailed geological and geomorphological mapping have been coupled with stratigraphic\nand structural studies of the Blais Creek Deep-seated Gravitational Slope Deformations (DsGSD),\nMonashee Mountains, British Columbia (BC). To reconstruct the DsGSD evolutionary stages and to evaluate its\ncontrolling factors, a complex methodology has been applied, integrating orthophotos, stereo models and 3D models\nof the DsGSD with field and literature data concerning tectonic and glacial history of the Seymour Valley.\nGeneral geomechanical properties of the deforming rock mass has been then evaluated for using in numerical\nmodels of the failure mechanism at Blais Creek and to define a broad geomechanical characterization of different\nportions of the DsGSD.\nThe combination between the aerial and terrestrial photogrammetry was appropriate in terms of the quality of\nthe information obtained more than the quantitative information. Several Ground Control Points (GCPs) and Tie\nPoints (TPs) were selected from the original DEM received by the BC Government. The use of a multitemporal\naerial triangulation gave the possibility to minimize the error relative to every single block of images. Couples of\noriented photos were used to create stereoscopic models. Multitemporal variations of the Blais Creek slope were\nobserved and compared to the actual situation of the slope.\nThe use of terrestrial photogrammetry through Adamtech software confirmed some of the qualitative data obtained\nfrom aerial interpretation and from field survey. The limited use of terrestrial photogrammetry was due to the impossibility\nof orienting the 3D terrestrial models. Anyway these models were also useful to confirm one of the\npossible mechanisms used to describe the evolution of Blais Creek.\nGeomechanical analysis was performed through field work and laboratory tests to characterize the entire slope\nand to produce some of the values useful for a possible numerical analysis of Blais Creek. It showed interesting\ndifferences in geomechanical properties between the calc-silicate and quartzite/gneiss.\nThe kinematic analysis showed very the different instability areas along the slope, even if variations in landforms\nand rock masses volume weren’t widespread along Blais Creek slope during the time span covered by aerial photographs\n(1973-2007). Indeed, the multitemporal analysis outlined very active instability along the large upper\ntrench and the lateral active slopes of Blais Creek. Even without significant level of risks in the area, considering\nthe remote area involved in this instability, some relevant hazards could occur, related to the possible collapse of\nSE side of Blais Creek DsGSD.\nRegarding the long term evolution of the DsGSD, the extensive network of linear features at Blais Creek is of a\nlarge deforming rock mass. Movement probably began with the retreat of valley glaciers during deglaciation when\nthe oversteepened valley sides were debuttressed. By these evidences it is possible to theorize that the post-glacial\nretreat of the rock face and removal of the ice buttress from both the Seymour and the Blais Creeek Valleys lowered\nthe factor of stability of the mass as a whole, allowing a deep-seated shear surface to develop gradually over time\nby progressive creep.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,001 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».