Sedan Crater (Nevada National Security Site)
Unreviewed draft
This page was built from a teammate-supplied list. The text is teammate-written, unreviewed. Sources pending.
Summary
not provided
Location
- Country
- USA (Nevada)
- Coordinates
- 37.18, -116.05
- Elevation (m)
- 1280
- Year first used as an analog
- not provided
Terrain and geology
not provided
Climate
not provided
Parameters matched
not provided
Why it is an analog
Largest known-energy man-made crater; unique calibration point for crater-scaling.
Key differences: where the analogy breaks down
Alluvium target, not regolith or basalt; explosion not hypervelocity impact; access restricted.
Experiments done
Apollo-era astronaut and USGS studies of ejecta blankets, rim overturn and crater shape from a known-energy explosion; calibration of crater-scaling laws used to interpret lunar craters.
Experiments proposed
Crater-scaling validation for lunar small craters; ejecta-block size statistics; seismic refraction of the breccia lens; drone photogrammetry vs LRO NAC comparison.
How to adjust it
Use as a scaled model: overlay simulant on the rim; shoot small high-velocity projectiles into simulant beds next to it for side-by-side comparison.
Access
not provided
Hazards
not provided
Sources
Sources pending (no sources in CSV).
v1 score, percentile and overlap flag
A descriptive lookup of scores v1 already stored. It is not a test, and a high percentile here does not show that this is a good analog.
v1 used this site
No. The nearest v1 site, "sf volcanic field", is about 455.3 km away.
| Score view | Result | Percentile | Score | Distance to tile (km) | Overlap flag |
|---|---|---|---|---|---|
| Connecting Ridge C1, Base | Scored | 91.9 | 19.6 | 5.6 | Not in a flagged tile |
| Connecting Ridge C1, Landing and mobility | Scored | 96.8 | 21.8 | 5.6 | In a flagged tile |
| Connecting Ridge C1, Power and night | Scored | 91.9 | 14.3 | 5.6 | Not in a flagged tile |
| Shackleton rim, Base | Scored | 93.0 | 40.4 | 16.8 | Not in a flagged tile |
| Shackleton rim, Landing and mobility | Scored | 99.4 | 46.3 | 16.8 | In a flagged tile |
| Shackleton rim, Power and night | Scored | 93.0 | 29.4 | 16.8 | Not in a flagged tile |
Overlap flag: whether the tile used for the score is one v1 flagged as stable in its top group across the Monte Carlo runs.
What these scores can and cannot tell you
- This is a lookup of scores v1 already stored. It is descriptive and is not a test of the method.
- A site is matched to the best-scoring tile that passed the gates within the match radius. A different radius would give different numbers.
- Tiles are large compared with most sites, so a score describes the surrounding area, not the site itself.
- Scores exist only for tiles that passed the land-cover and data gates. A gated-out or unscored site has no score, which says nothing about how good an analog it is.
- Percentile is the share of scored tiles in that view with a lower score.
- The Moon score is effectively terrain only. Mars is a low-confidence secondary result.
- v1 failed its negative controls, so a high percentile here does not show that a site is a good analog.
- The ranking is not checked against independent data. Gravity, air, dust and radiation are not scored.
- Sites are compared with views of their own body only.
- Match radius: 20 km, the radius v1 used.