In the central Oregon Cascades there is a large region of near-zero near-surface heat flux due to downward and lateral flow of groundwater. Within this region, there are numerous large cold springs. Despite the low temperatures of the springs, about 3.5 °C, the heat discharged at the springs is equivalent to a mean heat flux of 56 mW/m2 and represents approximately half the background heat flux. The rest of the background geothermal heat is advected laterally and discharged at lower elevations.

First Page Preview

First page PDF preview
You do not currently have access to this article.