Proceedings of the Ocean Drilling Program Volume 164 Scientific Results: Gas Hydrate Sampling on the Blake Ridge and Carolina Rise, Sites 991–997
Bibliographic record
Abstract
This Scientific Results volume covers Leg 164 of the cruises of the Drilling Vessel JOIDES Resolution, Halifax, Nova Scotia, to Miami, Florida, Sites 991–997, 31 October–19 December 1995. Ocean Drilling Program (ODP) Leg 164 was devoted to refining our understanding of the in situ characteristics and amounts of natural gas hydrate stored in sediments. The program involved drilling holes at three sites on the Blake Ridge to 750-m depths that extend through the zone where gas hydrate is stable and into the sedimentary section below. Short holes (50 m) were drilled at four sites on the crests of two diapirs on the Carolina Rise where the intrusion of diapirs has disturbed gas hydrate-bearing sedimentary sections. Because of the ephemeral nature of gas hydrate, we emphasized downhole measurements and sampling strategies that allowed the in situ conditions of gas hydrate to be reconstructed. The objectives of Leg 164 include (1) assessing the amounts of gas trapped in gas hydrate-bearing sediments, (2) contributing to an understanding of the lateral variability in the extent of gas hydrate development, (3) refining the understanding of the relationship between bottom-simulating reflectors and gas hydrate development, (4) investigating the distribution and in situ fabric of gas hydrate within sediments, (5) establishing the changes in the physical properties (e.g., porosity, permeability, velocity, and thermal conductivity) associated with gas hydrate formation and decomposition in continental margin sediments, (6) determining whether the gas captured in gas hydrate is produced locally or has migrated from elsewhere, (7) investigating the role of gas hydrate in the formation of authigenic carbonates, (8) refining our understanding of chemical and isotopic compositions of gas hydrates, (9) determining the gas compositions, hydration numbers, and crystal structures of natural gas hydrates, (10) determining the role of gas hydrate in stimulating or modifying fluid circulation, (11) investigating the potential connection between major slumps and the breakdown of gas hydrate, and (12) establishing the influence of the Carolina Rise Diapirs on gas hydrate as well as the origin of the diapirs themselves.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.003 | 0.002 |
| Science and technology studies | 0.002 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.019 | 0.004 |
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".