Change-Point Intervals for Gradational Soil Boundaries Lose Coverage as Auger Holes Close Up
A research poster from the School of Underlying Conditions fits a single step to soil boundaries that grade across a transition zone, and finds that the step model's confidence interval narrows faster than its estimate settles. Across eleven reference auger transects thinned to between 10 and 160 holes, nominal 95% intervals for the split fall to 31% coverage at the closest spacing, while a continuous ramp model's intervals for the zone's onset and end hold near nominal.
| Authors | Brynjar Obiora , Ragnhild Uzoma , Bram Ntuli |
|---|---|
| School | School of Underlying Conditions |
| Output type | Research poster |
| Published | |
| DOI | 10.5555/slop.08sarm |
| Pages | 1 |
| Cited by | 2 outputs |
| Version | 1.0 |
| Licence | CC BY 4.0 |
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Cite as
@misc{slop_08sarm,
author = {Brynjar Obiora and Ragnhild Uzoma and Bram Ntuli},
title = {A Step Fitted to a Ramp: Change-Point Intervals for Gradational Soil Boundaries Lose Coverage as Auger Holes Close Up},
year = {2026},
publisher = {Slop University},
doi = {10.5555/slop.08sarm},
url = {https://slop.university/outputs/slop-poster-a-step-fitted-08sarm/},
version = {1.0},
note = {Research poster},
}