Talk:asperity

RFV discussion: December 2020

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asperity in the geological sense

The entry currently has: "A part of a geological fault line that does not move." A search through multiple (current and older) dictionaries of geology has not provided any evidence of this sense. Can we find a reference to cite? Can anyone with expertise in this area confirm this sense? (Aabull2016 (talk) 04:44, 15 December 2020 (UTC))

I can't claim any expertise, but what I gather from looking through Google Books is that an asperity is a rough spot where the two sides of the fault have trouble slipping past each other. The forces from the movement of the rest of the fault then build up at the asperity, until it gives way and the two sides suddenly jerk past each other. That means that an asperity may not move for a long time, but when it finally does move it moves farther in a shorter period of time than anywhere else on the fault. Chuck Entz (talk) 06:40, 15 December 2020 (UTC)

I've fixed the wording. It's part of a relatively recent model of seismic analysis, so you won't find it in most dictionaries. Feel free to ping me in the future if you have any geology questions. —Μετάknowledge^{discuss/deeds} 07:06, 15 December 2020 (UTC)

RFV-passed Kiwima (talk) 00:27, 23 December 2020 (UTC)