Contour plots

This form sets up input to make contour plots of activity ratios at the top of a set of 1-D colums as a function of h upwelling rate W₀ and maximum porosity phi₀. Other inputs are the same as in the 1-D models. If the "Target data" information is entered, this form will also produce an overlay plot showing contours for specific activity ratio values. Any intersections on this plot are viable solutions.

Physical Parameters

Min Max N points

Upwelling velocity (cm/yr)

Maximum Porosity

Permeability exponent=

Pressure gradient= kb/km
Accuracy Tolerance=

Chemical Parameters

²³⁵U=²³⁸U ²³⁰Th ²²⁶Ra ²³¹Pa

Relative Activities

Target Data	(²³⁰Th/²³⁸U)	(²²⁶Ra/²³⁰Th)	(²³¹Pa/²³⁵U)
Values
Sigma

Spreadsheet Input

Use the sample

Enter a file name

or make one for a simple 2 layer model

Output Settings

Data types: Output Formats:

Graphics:

	Min	Max	N points
Upwelling velocity (cm/yr)
Maximum Porosity

	²³⁵U=²³⁸U	²³⁰Th	²²⁶Ra	²³¹Pa
Relative Activities