Encyclopedia of Paleoclimatology and Ancient Environments

2009 Edition
| Editors: Vivien Gornitz

Borehole Climatology

  • Hugo Beltrami
  • Daniela Nitoiu
Reference work entry
DOI: https://doi.org/10.1007/978-1-4020-4411-3_27

Introduction

Past ground temperatures can be estimated by analyzing perturbations to the quasi-steady state equilibrium geothermal profile in the uppermost kilometer of the Earth’s crust. In fact, it has been customary to eliminate the effects of known climatic events (mainly the last glacial termination) from the temperature profiles, in order to determine the internal heat output, an important quantity for the understanding of our planet’s dynamics. Widespread concern about global warming and temperature changes during the last century prompted many in the geothermal community to reexamine the data for evidence of more recent temperature changes. Not surprisingly, we are finding coherent and systematic temperature perturbation patterns. What had previously been considered noise is now appearing to be a rich signal of local and regional climate change.

Consider the Earth’s crust in thermal equilibrium. A temperature-depth profile starts at the surface at the mean-annual ground...
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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  • Hugo Beltrami
  • Daniela Nitoiu

There are no affiliations available