The Kink at 118 Metres

A reduced-order neural surrogate for borehole palaeotemperature inversion

A research poster from the School of Underlying Conditions inverts the temperature log of a 600 m basement borehole for past ground-surface temperature, using a proper-orthogonal-decomposition neural surrogate of heat conduction that runs 2,600 times faster than the full model. Carried as a free unknown, the conductivity of a 19 m interval of unrecovered core absorbs a gradient kink that a neighbour-filled inversion had read as a cooling episode, and widens the last century's posterior by 38%.

@misc{slop_wxeq30,
  author       = {Ragnhild Uzoma and Vigdis Emenike},
  title        = {The Kink at 118 Metres: A reduced-order neural surrogate for borehole palaeotemperature inversion},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.wxeq30},
  url          = {https://slop.university/outputs/slop-poster-borehole-temperature-inversion-wxeq30/},
  version      = {1.0},
  note         = {Research poster},
}