Borehole temperatures from the Awuna site in Alaska (blue dots) show a pronounced kink in the geothermal gradient consistent with a recent (last few decades) heating of >2 °C. The dashed gray line shows what the geothermal gradient would look like in the absence of this warming. Data available at http://gec.cr.usgs.gov/data/bht_alaska/sites/AWUN/AWUN_84JUL29.log.
Origin... uploaded in Integrate:Teaching for Sustainability:InTeGrate Modules:Modeling Earth Systems:Student Materials.
Image 51322 is a 653 by 605 pixel WebP
Uploaded:
Dec10 14
