BER launches Environmental System Science Program. Visit our new website under construction!

U.S. Department of Energy Office of Biological and Environmental Research

BER Research Highlights


Quantification of Arctic Soil and Permafrost Properties Using Ground Penetrating Radar and Electrical Resistivity Tomography Datasets
Published: May 12, 2017
Posted: November 21, 2017

Improved quantification of Arctic soil and permafrost properties.

The Science
The research team developed an approach to improve the estimation of ice-wedge dimension and other permafrost characteristics by integrating various geophysical imaging techniques including ground penetrating radar (GPR) and electrical resistivity tomography (ERT).

The Impact
Improving understanding of Arctic ecosystem climate feedback and parameterization of models that simulate freeze-thaw dynamics requires advances in quantifying soil and snow properties This work enables a better understanding and quantification of the morphology and physical properties of ice-wedges and permafrost present in Arctic tundra.

Summary
The team document for the first time that GPR data collected during the frozen season, when conditions lead to improved GPR signal-to-noise ratio, can provide reliable estimates of active layer thickness and geometry of ice wedges. They find that the ice-wedge geometry extracted from GPR data collected during the frozen season is consistent with ERT data, and that GPR data can be used to constrain the ERT inversion. Consistent with recent studies, they also find that GPR data collected during the frozen season can provide good estimates of snow thickness, and that GPR data collected during the growing season can provide reliable estimate thaw depth. Quantification of the value of the GPR and ERT data collected by the team during growing and frozen seasons paves the way for coupled inversion of the datasets to improve understanding of permafrost variability.

Contacts
BER Program Manager
Daniel Stover
Terrestrial Ecosystem Science, SC-23.1
Daniel.Stover@science.doe.gov (301-903-0289)

Principal Investigator
Stan D. Wullschleger
Oak Ridge National Laboratory
Oak Ridge, TN 37831
wullschlegsd@ornl.gov

LBNL Contact: Susan Hubbard
Lawrence Berkeley National Laboratory (LBNL)
Berkeley, CA 94720
sshubbard@lbl.gov

Funding
The Next-Generation Ecosystem Experiments (NGEE)–Arctic project is supported by the Office of Biological and Environmental Research within the U.S. Department of Energy Office of Science. This NGEE-Arctic research is supported through Contract No. DE-AC02-05CH11231 to Lawrence Berkeley National Laboratory.

Publications
Léger, E., Dafflon, B., Soom, F., Peterson, J., Ulrich, C., and Hubbard, S. "Quantification of Arctic soil and permafrost properties using ground-penetrating radar and electrical resistivity tomography datasets." IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 10(10), 4348–4359 (2017). [DOI:10.1109/JSTARS.2017.2694447].

 

Topic Areas:

  • Research Area: Terrestrial Ecosystem Science
  • Research Area: Next-Generation Ecosystem Experiments (NGEE)

Division: SC-33.1 Earth and Environmental Sciences Division, BER

 

BER supports basic research and scientific user facilities to advance DOE missions in energy and environment. More about BER

Recent Highlights

Mar 23, 2021
Molecular Connections from Plants to Fungi to Ants
Lipids transfer energy and serve as an inter-kingdom communication tool in leaf-cutter ants&rsqu [more...]

Mar 19, 2021
Microbes Use Ancient Metabolism to Cycle Phosphorus
Microbial cycling of phosphorus through reduction-oxidation reactions is older and more widespre [more...]

Feb 22, 2021
Warming Soil Means Stronger Microbe Networks
Soil warming leads to more complex, larger, and more connected networks of microbes in those soi [more...]

Jan 27, 2021
Labeling the Thale Cress Metabolites
New data pipeline identifies metabolites following heavy isotope labeling.

Analysis [more...]

Aug 31, 2020
Novel Bacterial Clade Reveals Origin of Form I Rubisco
Objectives

  • All plant biomass is sourced from the carbon-fixing enzyme Rub [more...]

List all highlights (possible long download time)