Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Already on GitHub? Sign in to your account

névé #471

Closed
kaiiam opened this Issue Mar 27, 2017 · 4 comments

Comments

Projects

Complete in cryophile

2 participants
Contributor

kaiiam commented Mar 27, 2017 edited by pbuttigieg

Hey @pbuttigieg as requested here is an issue for névé. The current definition is:

Snow which has undergone several cycles of melting and refreezing while being compacted.

However this is to general and could possibly be said about many different ice types. As per your request I'll try for a definition more specific about what properties of névé makes it different from other ice that has been through such cycles.

Merriam Webster defines it as:

the partially compacted granular snow that forms the surface part of the upper end of a glacier; broadly : a field of granular snow

So we could maybe define it as:

An accumulation of partially compacted granular snow, forming upon the atmosphere exposed surface of a glacier, which has undergone several cycles of melting and refreezing while being compacted.

Thoughts?

Owner

pbuttigieg commented Mar 27, 2017

Sounds better, and it seems to be strictly glacier-linked.

Working with your def and placing the physical attributes (rather than the occurrence-based attributes) first and weakening the glacial link until we're more sure...

Partially compacted granular snow, which has undergone several cycles of melting and refreezing while being compacted, usually found on the atmosphere-exposed surface of a glacier.

Add a comment (if not done already) saying that névé precedes firn.

pbuttigieg added to TODO in cryophile Mar 27, 2017

Contributor

kaiiam commented Mar 28, 2017

@pbuttigieg definition updated in my envo fork, pull request coming soon.

kaiiam closed this Mar 28, 2017

kaiiam reopened this Mar 28, 2017

Owner

pbuttigieg commented Mar 28, 2017

PS: use the PATO quality granular with the has quality relation in your axiomatisation of névé and firn. It's already imported into ENVO. It may be more accurate to say:

'has part' some (ice and 'has quality' some granular')

As these snow types are actually complex mixes of things constantly undergoing metamorphic processes.

pbuttigieg moved from TODO to In Progress in cryophile Mar 28, 2017

Contributor

kaiiam commented Mar 31, 2017

@pbuttigieg I think we finalized this in our last PR, I'm going to close this

kaiiam closed this Mar 31, 2017

pbuttigieg moved from In Progress to Complete in cryophile Apr 13, 2017

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment