Bibliographic record
Abstract
The purpose of this study is to understand the environment for failure of the Perpetual Landslide. To achieve this objective a field investigation was carried out to evaluate the movement pattern of the slide and its geologic and hydrologic environments. This information, along with ground water flow and stability models was used to define major controls on stability. The following points are made: (1) The slide moves by rotation and translation of blocks with a transition to flow movement at the toe. (2) At depth, the failure surface lies within the Tertiary sedimentary rocks. Exposed gouge consists primarily of clay (most likely remolded claystone and some clay-rich till) with dispersed pebbles and rock fragments. (3) Discontinuities including inherent heterogeneity between and within geologic units, weathering, and jointing are significant to the unstable situation. (4) Changes in stress equilibrium, particularly those caused by removal of overburden and lateral support with downcutting in Trout Creek Canyon, are likely important in the origin of the slide. (5) The proposed mechanism of failure is: (a) The progressive reduction from peak to residual strength of the claystone. (b) In addition to the high water table, high pore-water pressures along the failure surface. At the present time, the slide's continuous movement is acting to establish a new stability in equilibrium with this ground water flow system and lower strength.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.003 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 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 source (direct Gemma or distilled Codex), 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".