# Layer by Layer (DD-470)

> On frozen lakes, ice thickens in layers as cold spells come and go; temperature swings, wind and pressure crack and stack the sheets into ridges and shards. The Reel's captions describe ice sheets formed from layers of ice in cold temperatures, varying with the intensity of temperature fluctuations. The footage, credited to all.litvinova, shows layered, broken ice on a frozen lake.

- Department: Nature
- First published: 2025-01-26
- Last updated: 2025-01-26
- Permalink: https://detailenjoyer.com/case/layer-by-layer/
- Author: Marcus Easterling (DetailEnjoyer), The Detail Department

## Quick facts

- **DD-470-F01**: Layers of ice. _(Write-up · Exhibit A (Formation))_
- **DD-470-F02**: Cold temperatures. _(Write-up · Exhibit B (Driver))_

## Write-up

Ice sheets can build up in visible layers. Changing temperatures leave their mark.

1. **Formation**: Layers of ice.
2. **Driver**: Cold temperatures.
3. **Variation**: Temperature swings.
4. **Cracks**: Pressure and wind.
5. **Setting**: Frozen lake.

## Related case files

- [ICECORE (DD-398)](https://detailenjoyer.com/case/icecore/): I linked more ice cores

## Reel vs. record

- **Note**: None needed.

## Video: Layer by Layer: Ice Sheets Can Build up in Visible Layers

- Duration: 23.4 s · Published: 2025-01-26
- File: https://detailenjoyer.com/assets/videos/DFUEi3gN4J-.mp4

### Transcript

Ice sheets formed [...] of ice [...] cold temperatures. [...] ranging from [...] and intensity of [...] structure of the [...] fluctuations, [...] NOW YOU KNOW!

## Questions & answers

**Q: What builds the sheets?**  
A: Stacking. _(Source: Write-up · Exhibit A (Formation) · Wikipedia: Ice)_

**Q: What drives variation?**  
A: Weather. _(Source: Write-up · Exhibit B (Driver) · Wikipedia: Ice)_

**Q: What cracks ice?**  
A: Stress. _(Source: Write-up · Exhibit C (Variation) · Wikipedia: Ice)_

**Q: Setting?**  
A: Ice. _(Source: Write-up · Exhibit D (Cracks) · Wikipedia: Ice)_

**Q: Need?**  
A: Freezing. _(Source: Write-up · Exhibit E (Setting) · Wikipedia: Ice)_

## Sources

- [Wikipedia: Ice](https://en.wikipedia.org/wiki/Ice)
- [Wikipedia: Lake Baikal](https://en.wikipedia.org/wiki/Lake_Baikal)

## Cite this case file

Easterling, Marcus. "Layer by Layer." The Detail Department (DetailEnjoyer), case file DD-470, last updated Jan 26, 2025. https://detailenjoyer.com/case/layer-by-layer/