ABoVE: Methane Ebullition Hotspots in Frozen Lakes near Fairbanks, Alaska, Oct 2014

Description

This dataset includes maps of the locations and number of methane ebullition hotspots in 15 frozen lakes in the southern portion of the Goldstream Valley and the surrounding landscape just north of Fairbanks, Alaska, USA. Hotspots were identified from early winter high resolution aerial photographs acquired three days after lake-ice formation in October 2014. Hotspot ebullition seeps are defined as point-sources of high ebullition that release methane from lake sediments year-round. High rates of bubbling impede ice formation. In early winter, bubbling leads to dark, round open holes in lake ice which were visible in the aerial photos. This project investigated the role of theromkarst lakes in thawing of permafrost and mobilization of organic carbon in frozen soils.

Resources

Name Format Description Link
33 ABoVE: Methane Ebullition Hotspots in Frozen Lakes near Fairbanks, Alaska, Oct 2014: Methane_Ebullition_Lakes_AK.pdf https://data.ornldaac.earthdata.nasa.gov/public/above/Methane_Ebullition_Lakes_AK/comp/Methane_Ebullition_Lakes_AK.pdf
22 Location of 15 lakes surveyed for methane ebullition hotspots (green points) north of Fairbanks, AK, on October 8, 2014. Inset shows detail of Eagle Lake with locations of 43 hotspots (red points) detected by openings in lake ice. https://daac.ornl.gov/ABOVE/guides/Methane_Ebullition_Lakes_AK_Fig1.jpg
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/1861
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F1861
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/above/Methane_Ebullition_Lakes_AK/
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/ABOVE/guides/Methane_Ebullition_Lakes_AK.html
21 ABoVE project site https://above.nasa.gov

Tags

  • snow-ice
  • climate-indicators
  • atmosphere
  • cryosphere
  • terrestrial-hydrosphere
  • atmospheric-chemistry
  • paleoclimate-indicators
  • terrestrial-hydrosphere-indicators
  • earth-science

Topics

Categories