What is the average annual accumulation of cosmic dust on Earth?

  • I
  • Thread starter swampwiz
  • Start date
  • #1
396
21
By "accumulation", I mean depth at the Earth's surface (i.e., whatever volume it is would be divided up the surface area). This dust would be from anything (e.g., meteors, stardust, etc.), but would only count stuff that ends up as dust (i.e., no gas or liquid). I guess a follow-on question would be how much water collects.
 

Answers and Replies

  • #2
PeroK
Science Advisor
Homework Helper
Insights Author
Gold Member
2020 Award
17,569
9,339
Have you tried an internet search?
 
  • #3
Ibix
Science Advisor
Insights Author
2020 Award
8,161
7,508
The mass is 4x107kg/year according to this paper (which is linked off the Wikipedia page on cosmic dust, so you should have been able to find easily). The Earth's surface area is something like 5×1014m2, so around 10-7kg/m2/year. Typical density of rock is around 3-5×103kg/m3, for a depth of less than 10-10m/year. On that scale, what fraction is or isn't rock really isn't important.
 
  • #4
Vanadium 50
Staff Emeritus
Science Advisor
Education Advisor
27,244
11,236
Have you tried an internet search?
It's swampwiz. So no.

We should be honored to always be his first stop.
 
  • Like
  • Haha
Likes PeroK and Motore

Related Threads on What is the average annual accumulation of cosmic dust on Earth?

  • Last Post
Replies
6
Views
3K
  • Last Post
Replies
7
Views
4K
  • Last Post
Replies
2
Views
10K
  • Last Post
Replies
19
Views
2K
Replies
4
Views
1K
Replies
0
Views
503
Replies
3
Views
3K
Replies
9
Views
5K
Replies
11
Views
1K
Top