Earth Sciences Division (ESD) Department of Energy (DOE) Lawrence Berkeley National Laboratory (LBNL)

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180 posts categorized "Research Highlights"

10/21/2014

Reducing Uranium in a Contaminated Aquifer

Website Teaser: Ken Williams and Phil Long were part of a team that recently compared two types of organic-rich sediments to better understand uranium release mechanisms at contaminated sites.

Bioimmobilization of Cr in Contaminated Aquifers

ESD’s Harry Beller, Peter Nico, and colleagues studied chromate bioremediation and found that the bulk redox status and biogeochemical regime do not necessarily control the final product of Cr(VI) reduction.

07/25/2014

Insect Ecosystem Contains Biofuel Clues

ESD’s Javier Ceja-Navarro and others have characterized the gut microbiome of a wood-feeding beetle native to the eastern US, finding in its gut a metabolic capability permitting both aerobic and anaerobic activity, as well as N2 fixation.

07/02/2014

Extreme Rain: Comparing Climate Models

Daniele Rosa and Bill Collins compared precipitation data from Southeastern U.S. rain-gauge measurements with GCMs, finding that GCMs overestimate the impact of medium rainfall while underestimating the impact of no, low, or heavy rain.

06/16/2014

Modeling How Fractures Develop

Daisuke Asahina led development of a modeling approach for studying hydromechanical coupled processes within geological formations. Model simulations showed good agreement with two independent studies of hydromechanical coupling.

05/21/2014

How Microbes Deal with Permafrost

In the May 12 (2014) issue of Nature Reviews Microbiology, Janet Jansson and Neslihan Tas explore the microbial ecology of permafrost, including some of the strategies microbes use to cope with frozen conditions, as well the influence of climate change.

Geothermal Team Applies New Approach

Three papers (Spycher et al., Peiffer et al., and Wanner et al.) by the same team of ESD geochemists are to appear in the July 2014 issue of Geothermics.

Numerical Model Assesses Nevada Geothermal Area

Christoph Wanner recently led a team of ESD scientists in developing a new reactive transport model of the Dixie Valley, Nevada, geothermal region, aiming to assess fluid flow pathways and fluid rock interaction processes at the site.

Optimized Geothermometry for Geothermal Exploration

ESD’s Loic Peiffer recently led a team of ESD scientists in exploring a new geothermometry approach as a tool for inferring geothermal reservoir temperatures (the key in evaluating how productive a geothermal source could be).

Integrated Solute Geothermometry

Team of ESD geochemists revisits the mineral saturation index geothermometry method with the objective of simplifying its application and improving predictions of geothermal reservoir temperatures using numerical optimization.