<p><a href="https://earthscience.stackexchange.com/q/19363">This question</a> made me wonder: <strong>how much mass (or volume) of material is eroded by the sea each year? Of this mass, how much is deposited in the oceans?</strong> (As Michael pointed out in his answer, part of the eroded material can be redeposited on another part of the shoreline.)</p>

<p>The bottom line is: I wonder if the increase in sea level (and subsequent increase in coastal erosion) could lead to a positive feedback because of Archimedes principle. I'd like to calculate if the volume of material deposited in the oceans is enough to make the sea level rise, or if this effect is negligible.</p>

CC BY-SA 4.0
2020-03-05T19:17:39.553Z
this is related https://earthscience.stackexchange.com/questions/14200/how-much-does-sea-level-rise-due-to-sediment-deposition?rq=1 with numbers and all.
trond hansen
CC BY-SA 4.0
2020-03-05T19:47:59.657Z
Interesting, thanks! I thought about river input, but I figured it was more or less in balance with the sediments removed by subduction. I didn't thought about the subsidence aspect though...
Jean-Marie Prival
<sea-level><sedimentology><erosion>
Mass budget of coastal erosion and ocean deposion
Jean-Marie Prival
# Mass budget of coastal erosion and ocean deposion

(Asked by: username_0 on 2020-03-05)

[This question](https://earthscience.stackexchange.com/q/19363) made me wonder: **how much mass (or volume) of material is eroded by the sea each year? Of this mass, how much is deposited in the oceans?** (As Michael pointed out in his answer, part of the eroded material can be redeposited on another part of the shoreline.)

The bottom line is: I wonder if the increase in sea level (and subsequent increase in coastal erosion) could lead to a positive feedback because of Archimedes principle. I'd like to calculate if the volume of material deposited in the oceans is enough to make the sea level rise, or if this effect is negligible.

**Tags:** sea-level, sedimentology, erosion

> **Comments:**
> **username_1**: this is related https://earthscience.stackexchange.com/questions/14200/how-much-does-sea-level-rise-due-to-sediment-deposition?rq=1 with numbers and all.  
> **username_0**: Interesting, thanks! I thought about river input, but I figured it was more or less in balance with the sediments removed by subduction. I didn't thought about the subsidence aspect though...  

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