Multidisciplinary approach (geology, geomorphology, geomechanics, geomatics) for the characterization of the Blais Creek DsGSD (Monashee Mountains, BC, Canada)
Bibliographic record
Abstract
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.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".