- #1

tonydoss

- 2

- 0

Hi,

I'm a geologist, and I really suck in physics so I would need some help, please! This is not a homework question, I'm an academic! This is for my research...

Let's say I have a "box" (a river catchment) with a mass, M, of material (sediments) in this box, which resides in the box for a time, T. There's a flux in the box, Fin, balanced by a flux out of the box, Fout, and equal to M/T (see attached PDF file)

Let's say I change Fin to a new value, Fin_new. I have the gut feeling it would take the time T for this perturbation to propagate through the box and for Fout to reach a new value (Fout_new = Fin_new)... but I have no idea how to put that in equations (for example, express Fout as a function of T and the old and new values of Fin).

Any help, please?

Thanks in advance

I'm a geologist, and I really suck in physics so I would need some help, please! This is not a homework question, I'm an academic! This is for my research...

Let's say I have a "box" (a river catchment) with a mass, M, of material (sediments) in this box, which resides in the box for a time, T. There's a flux in the box, Fin, balanced by a flux out of the box, Fout, and equal to M/T (see attached PDF file)

Let's say I change Fin to a new value, Fin_new. I have the gut feeling it would take the time T for this perturbation to propagate through the box and for Fout to reach a new value (Fout_new = Fin_new)... but I have no idea how to put that in equations (for example, express Fout as a function of T and the old and new values of Fin).

Any help, please?

Thanks in advance