Re: (XSS229/3A)/Channel Pattern & landforms -- GEOFORUM

[ Show ]

Support VoyForums

[ Shrink ]

VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

[ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time ]

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: 20:15:52 09/07/99 Tue
Author: Dr. Chatterjea
Subject: Re: (XSS229/3A)/Channel Pattern & landforms
In reply to: Michele 's message, "Re: (XSS229/3A)/Channel Pattern & landforms" on 13:35:23 08/26/99 Thu

> hmmm,need some help here...
>
> According to John T. Hack, the drainage area increases
> with distance downstream at a predictable rate.
>
> 1)Is this the rate that affects the rate of which
> runoff increases downstream and the rate of the
> sediment yield?
>
> 2) Also , does permeablility of the underlying rock,
> vegetation cover and climate play a part in
> influencing this theory? In other words, does this
> affect the predictable rate?

I've been trying to post this message here - but for some reason it's being 'transported' somewhere else!! Any way, hope it gets posted here this time!

Congrats for taking part in the discussion. But isn't there something you have missed while reading??? Check again - according to Hack (Michelle's 'Big Guy'!!) it's the drainage area that increases at a predictable rate with distance downstream - so with this increased area (in a larger drainage basin with a bigger river) there can be any number of combinations of the controls that you all have been talking about. The increase is in the drainage basin area - remember?? So whatever falls within this now increased (extended)area, be it forests, or urbanized, impervious soil, resistant rocks - everything can have its own impacts, collectively or singly. What Hack showed is that there is an increase in the DRAINAGE BASIN AREA and that this rate OF INCREASE IN AREA is predictable from the increase in the stream length. In simple terms it means that the longer the stream is, the larger will be its drainage basin. Hope this will clarify the questions you have. If not, post more messages. If you want to argue about this or any other point - do feel free to do so! You are most welcome.

[ Next Thread | Previous Thread | Next Message | Previous Message ]