Why it matters

Jänisjärvi expands the Earth catalog and shows the range of confirmed impact structures by scale, age, and preservation state.

What happenedJänisjärvi is a confirmed terrestrial impact structure in a terrestrial setting under editorial verification. This profile records a listed diameter of 14 km and keeps the object ready for editorial expansion.
Why it mattersJänisjärvi expands the Earth catalog and shows the range of confirmed impact structures by scale, age, and preservation state.
How scientists knowEarth Impact Database

Measurements and uncertainty

Diameter14 km
Depthnot listed
Ageage under editorial verification
StatusConfirmed
Coordinatesrequires editorial verification
Record levelminimal

Seed record: coordinates and diameter support navigation, while geology, age, and visual rights need enrichment.

Scientific profile

The production profile should further document target rocks, preservation state, shock evidence, and the confirmation history of the impact interpretation.

Data provenanceEarth Impact Database

Reconstruction gallery

More visual readings of the crater

If verified imagery is not enough, the profile receives a scientific reconstruction: not fantasy in place of fact, but a visual hypothesis clearly separated from sources.

World paletteocean blue, cloud light, and living green land
Editorial visual plate for Jänisjärvi: location, scale, and catalog status.
Current visual previewBase plate: source image, satellite material, or editorial plate where visual reading begins.
Reverse reconstructionmoving from the present trace back to the impact event
Chronological inversionreading the object from future state back through earlier layers
The present as an archive of the futuretreating today's profile as evidence for future analysis

Visual reconstruction

Reverse reconstruction → Chronological inversion → Bidirectional analysis → The present as an archive of the future

Every profile needs a visualization preview: an existing image, an aesthetically treated source, or a scientific reconstruction.

Reverse reconstructionmoving from the present trace back to the impact event
Chronological inversionreading the object from future state back through earlier layers
Bidirectional analysischecking past-to-present and present-to-past interpretations
The present as an archive of the futuretreating today's profile as evidence for future analysis

Research history

This profile was generated from the working Earth appendix and is kept in a clean editorial state until specialist references are added.

Sources

CSVJSONJänisjärvi. Crater.world record. Last reviewed 2026-05-08.
Last reviewed
2026-05-08
Source baseline
Earth Impact Database
Uncertainty note
Seed record: coordinates and diameter support navigation, while geology, age, and visual rights need enrichment.
Earth Impact DatabaseUniversity of New Brunswick

Education mode

Facts

  • Listed diameter: 14 km.
  • Listed age: age under editorial verification.
  • Profile coordinates: 0.000, 0.000.
Glossaryejecta, impact melt, breccia, central peak, erosion
Classroom questionWhich evidence separates an impact crater from a volcanic caldera?
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