Go Back   EcoModder Forum > Off-Topic > The Lounge
Register Now
 Register Now
 


Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 11-30-2017, 02:58 PM   #11 (permalink)
Master EcoModder
 
Ecky's Avatar
 
Join Date: Dec 2011
Location: New Zealand
Posts: 5,005

ND Miata - '15 Mazda MX-5 Special Package
90 day: 42.54 mpg (US)
Thanks: 2,866
Thanked 2,501 Times in 1,547 Posts
My background as a geologist inclines me to say, "most likely yes". Sea level rise will, on average, slightly increase erosion. Erosion will slightly increase sea level. I couldn't tell you the magnitude of these changes, but my bet is that on a human timescale, eroding land will have a much smaller effect than melting water.

  Reply With Quote
The Following User Says Thank You to Ecky For This Useful Post:
Xist (11-30-2017)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 11-30-2017, 05:30 PM   #12 (permalink)
Not Doug
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,186

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 35.35 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 34.2 mpg (US)

Gramps - '04 Toyota Camry LE
90 day: 35.39 mpg (US)

Don't hit me bro - '05 Toyota Camry LE
90 day: 35.79 mpg (US)
Thanks: 7,217
Thanked 2,217 Times in 1,708 Posts
Quote:
Originally Posted by freebeard View Post
Your linky-dinky is unresponsive to the question
Not the first sentence?

"Erosion and sediment transported by wind, water, and ice can deliver sediments to the ocean and, although the impact is seemingly small, when averaged globally, a significant volume of sediment is delivered, and this can displace an equally significant volume of water."

Ecky,

Yay! I was right about something!
  Reply With Quote
Old 11-30-2017, 07:58 PM   #13 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,562
Thanks: 7,738
Thanked 8,554 Times in 7,041 Posts
Oh, come on. Sea level is a datum line.

The reducto ad absurdum: If all the terrain above sea level eroded into the depths would sea level be higher or lower than it is now?
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
  Reply With Quote
Old 11-30-2017, 10:28 PM   #14 (permalink)
Not Doug
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,186

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 35.35 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 34.2 mpg (US)

Gramps - '04 Toyota Camry LE
90 day: 35.39 mpg (US)

Don't hit me bro - '05 Toyota Camry LE
90 day: 35.79 mpg (US)
Thanks: 7,217
Thanked 2,217 Times in 1,708 Posts
It would be sea level.
  Reply With Quote
Old 12-01-2017, 02:10 AM   #15 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,562
Thanks: 7,738
Thanked 8,554 Times in 7,041 Posts
By Jove, I do believe he's gotten it.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
  Reply With Quote
Old 12-01-2017, 11:49 AM   #16 (permalink)
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,907

Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 42.48 mpg (US)

Forest - '15 Nissan Leaf S
Team Nissan
90 day: 156.46 mpg (US)

Number 7 - '15 VW e-Golf SEL
TEAM VW AUDI Group
90 day: 155.81 mpg (US)
Thanks: 3,475
Thanked 2,950 Times in 1,844 Posts
Quote:
Originally Posted by jamesqf View Post
That's just plain wrong. Sea level is defined WRT gravitational equipotential surfaces (plus a small contribution from the centrifugal force of Earth's rotation), NOT distance from the center of the Earth. If the sea level was 8000' higher south of the equator, the water would flow north until the levels equalized.
Did you read the link? It is all about how measuring mountains above sea level is not very accurate, in telling us how tall they actually are above the center of the earth - or how close they are to space.

There is about 2.5 miles of ice on Antarctica. We have the GRACE satellites that can measure gravity very accurately.
__________________
Sincerely, Neil

http://neilblanchard.blogspot.com/
  Reply With Quote
Old 12-01-2017, 01:14 PM   #17 (permalink)
Master EcoModder
 
Join Date: Jun 2008
Location: Earth
Posts: 5,209
Thanks: 225
Thanked 811 Times in 594 Posts
Quote:
Originally Posted by NeilBlanchard View Post
Did you read the link? It is all about how measuring mountains above sea level is not very accurate, in telling us how tall they actually are above the center of the earth - or how close they are to space.
Yes, I read the article - skimmed it, rather, because I'd seen similar before. The problem is that it's what I might call junk science news, like "supermoons": something that is factually true, perhaps even sort of interesting, but absolutely irrelevant for any practical purpose.

Just to note: those equatorial mountains aren't closer to space, because space is defined either as lack of atmosphere (for practical purposes) or for legal purposes as the Kármán line, which is 62 miles/100 km above sea level. And sea level, of course, is defined as the approximately oblate spheroid that's a gravitational equipotential surface.

The same principle holds for Antarctica (and Greenland, or anywhere there are tall mountains, deep basins, or rocks of different density). Yes, they have gravity, but that gravity defines the (non-spheroidal) equipotential surface that is sea level. So the water there is not 8000' higher: it's all at the same* gravitational potential.

*Neglecting the small effects of winds, currents, and the like.
  Reply With Quote
Old 12-01-2017, 01:25 PM   #18 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,562
Thanks: 7,738
Thanked 8,554 Times in 7,041 Posts
What NASA has to say on the subject:

https://vesl.jpl.nasa.gov/research/sea-level/
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
  Reply With Quote
Old 12-01-2017, 03:54 PM   #19 (permalink)
Not Doug
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,186

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 35.35 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 34.2 mpg (US)

Gramps - '04 Toyota Camry LE
90 day: 35.39 mpg (US)

Don't hit me bro - '05 Toyota Camry LE
90 day: 35.79 mpg (US)
Thanks: 7,217
Thanked 2,217 Times in 1,708 Posts
Distance from the center of the Earth?
  Reply With Quote
Old 12-01-2017, 05:58 PM   #20 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,562
Thanks: 7,738
Thanked 8,554 Times in 7,041 Posts
What happened between #14 and #19? You were so close, go back and reread #17:

Quote:
Originally Posted by amesqf
And sea level, of course, is defined as the approximately oblate spheroid that's a gravitational equipotential surface.

__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com