LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Publisher: AGU
Languages: English
Types: Article
Subjects: sub-02
We describe and apply a method for estimating uplift rate his-\ud tories from longitudinal river pro¯les. Our strategy is divided into three parts.\ud First, we develop a forward model, which calculates river pro¯les from up-\ud lift rate histories. Height variation along a river pro¯le is controlled by up-\ud lift rate and moderated by the erosional process. We assume that the ero-\ud sional process can be represented by a combination of advection and di®u-\ud sion, which are parametrized using four erosional constants. Secondly, we have\ud posed and solved the geologically more interesting inverse problem: which\ud uplift rate history minimizes the mis¯t between calculated and observed river\ud pro¯les? The inverse algorithm has been tested on synthetic river pro¯les,\ud which demonstrates that uplift rate histories can be reliably retrieved. Our\ud tests show that the erosional process is dominated by advection (i.e. knick-\ud point retreat) and that changes in lithology and discharge play a secondary\ud role in determining the transient form of a river pro¯le. Finally, we have in-\ud verted river pro¯les from a series of African topographic swells, namely the\ud Bi¶e, South African, Namibian, Hoggar and Tibesti domes. Fits between cal-\ud culated and observed river pro¯les are excellent. Calculated uplift rate his-\ud tories suggest that these domes grew rapidly during the last 30{40 million\ud years. Uplift rate histories vary signi¯cantly from dome to dome but cumu-\ud lative uplift histories agree closely with independent geologic estimates.
  • No references.
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article