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

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.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated August 11, 2025, 15:34 (UTC)
Created March 20, 2025, 14:15 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 5a39aebd-67b8-4e82-b2de-0e68489f1635
harvest_source_id 44069cc8-d515-495f-9ea4-b67f76a0a7cb
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/1861
landingPage https://doi.org/10.3334/ORNLDAAC/1861
modified 2025-08-08
programCode {026:000}
publisher ORNL_DAAC
references {https://daac.ornl.gov/graphics/browse/project/square/above_logo_circular_square.png}
resource-type Dataset
source_datajson_identifier true
source_hash 092c5f774cb1c0545777222974a36b415d3b7a535917a07e1a36513f8172d0d0
source_schema_version 1.1
spatial [[{"WestBoundingCoordinate":-147.939,"NorthBoundingCoordinate":64.9368,"EastBoundingCoordinate":-147.769,"SouthBoundingCoordinate":64.863}],"CARTESIAN"]
temporal 2014-10-08/2014-10-08
theme {"Earth Science"}