Alvena
CA19901100_Bearly November 1990·Alvena
Reported early November 1990 at Alvena. One archive recorded it, so nothing about it can be cross-checked.
The record
- date
- early November 1990 (month precision, “early”)
- place
- Alvena
Canada - crop
- not recorded by any source
- size
- not recorded
- recorded by
- cc
- images
- 1 · 1 diagram
- writing
- nothing was written about this formation on any source
Also called
Nothing else. No other name or place string appears on any source record for this formation.
Where exactly
- coordinate
- 52.516770, -106.017850
- how it was got
- geonames
place, to within 2,000 m, from the cc record - on a map
- OpenStreetMap
No source publishes a coordinate for any formation in this archive. Every coordinate here is derived from the place name a source printed, and this page says how precise that makes it rather than rounding it away.
Images
1 image(s) on this formation's own source records. Click a tile for the full image; the bytes are fetched when you ask for them and are not stored in this page.
Diagrams (1)
| site | kind | credit | basis | caption | size | file | source page |
|---|---|---|---|---|---|---|---|
| cc | diagram | cropcirclecenter.com / Bertold Zugelder | site default | 575×415 42.2 KiB image/jpeg |
image ab1b12c45c36 | https://www.cropcirclecenter.com/date/1990/199011.html |
Date
early November 1990, to month precision. What a source records is the day a formation was found and reported.
- reported by
- cc: November 1990
Place
What each source printed, and the coordinate derived from it. No source in this archive publishes a coordinate of its own.
- coordinate
- 52.516770, -106.017850 — place, ±2,000 m, by geonames, from the cc record
- on a map
- OpenStreetMap
| site | place | county | country | grid ref | what3words | fix |
|---|---|---|---|---|---|---|
| cc | Saskatchewan | Canada | 52.516770, -106.017850 place / geonames |
Crop and size
crop and size not recorded by any source
Source records
What each source published, side by side. A row whose values differ across the sources is marked: the archive prints the disagreement rather than choosing a winner.
| field | cc cropcirclecenter.com |
|---|---|
| id / slug | CA19901100_B |
| name | Alvena |
| location | |
| county | Saskatchewan |
| country | Canada |
| date reported | 1990-11 |
| date precision | month |
| crop | |
| size | |
| diameter (ft) | |
| grid reference | |
| what3words | |
| map link | |
| credits | cropcirclecenter.com / Bertold Zugelder |
| source page | https://www.cropcirclecenter.com/date/1990/199011.html |
| link to the entity | singleton decided by none on 2026-09-11 |
| warnings | unknown_day; no_formation_page |
| record | cc/7a6678103098b… raw record view: /formation/cc/7a6678103098bd86f3f04920cebfbd3420813102ff773f2d078e9329cf2f8cc3 in the preview app |
Texts
no text documents in the archive for this formation
Claims about this formation
no claim was extracted from a text about this formation
Geometry
1 diagram file(s) on this page. measured from the diagram itself, and experimental: the extractor's rotational order is right on 88.8 % of a 200-diagram hand-labelled set against a gate of 90 %, so read a number here beside the picture rather than instead of it.
| diagram | rotational symmetry | elements | rings | mirror | fill |
|---|---|---|---|---|---|
| cc ab1b12c4 | ≈ continuous (concentric circles) | 2 | 2 | 0.99 | 0.8275 |
Experimental, and marked ≈ wherever it appears. These numbers are read off a drawing, not off the field: the extractor's rotational order agrees with a hand-labelled set on 88.8 per cent of 200 diagrams against a gate of 90 per cent, its element count is within one on 97.5 per cent, and its ring count is not calibrated at all. Nothing in the analysis tree is derived from the rotational order while that gate is unmet.
Diagrams that look like these: cc ab1b12c4— the nearest by perceptual hash. The whole archive is browsable by shape in the shape section, and this formation's own diagrams go straight into that grid: show them in the grid.
Neighbours
In time
- previous
- Jamestown 28 October 1990, Jamestown
- next
- Alvena 2 November 1990, Alvena
- previous in CA
- Dawson Creek 16 October 1990
- next in CA
- Alvena 2 November 1990
- same day
- Alvena (Alvena) · Gulf Breeze (Gulf Breeze)
- within 7 days and 25 km
- Alvena November 1990, 0 m away · Alvena 2 November 1990, 0 m away, 1 day(s) apart
In place
The nearest formations the archive can place.
Alvena31 August 1990Alvena
0 m away, 1990-08-31 Alvena31 August 1990
Alvena
0 m away, 1990-08-31 AlvenaNovember 1990
Alvena
0 m away, 1990-11
Alvena2 November 1990Alvena
0 m away, 1990-11-02
Saskatoon6 August 1992Saskatoon
61.5 km away, 1992-08-06 SaskatoonAugust 1993
Saskatoon
61.5 km away, 1993-08
- same county and year
- none
Provenance
- entity built at
- 2026-09-11T19:20:39Z (derived from the link decisions, not from this build)
- index run ids
- none
- reviews applied
- none
- open queue pairs
- none
- entity record
- index/formations/CA19901100_B.json · row in index/manifest.jsonl
- input digests
- entity b6720d12b04a · images 4c616793cc27 · texts 4f53cda18c2b · geo 2ecf0628b33f