What the Casing Kept

MCR-ALS of thirty years of archived UV-visible spectra from one monitoring bore

A research poster from the School of Underlying Conditions resolves 118 archived UV-visible spectra from thirty years of quarterly sampling at one observation bore into three components by multivariate curve resolution: the aquifer's dissolved organic matter, nitrate, and a third, chemically unassigned profile whose share of the 254 nm absorbance falls as the purge before sampling lengthens (Spearman ρ = −0.71 across 87 visits with a recorded purge). With that component separated, the organic-matter contribution shows no trend, and the poster concludes that the record's long rise at 254 nm was standing casing water reaching the bottle.

@misc{slop_hqf3dm,
  author       = {Vigdis Emenike and Ragnhild Uzoma},
  title        = {What the Casing Kept: MCR-ALS of thirty years of archived UV-visible spectra from one monitoring bore},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.hqf3dm},
  url          = {https://slop.university/outputs/slop-poster-unmixing-one-monitoring-hqf3dm/},
  version      = {1.0},
  note         = {Research poster},
}