Current projects in our lab include: a) peatland studies (focusing on carbon stocks and fluxes) across latitudinal gradients in the US from the Florida Everglades to Alaska, including boreal systems in Maine and Minnesota; b) studies that explore the critical zone architecture, and the spatial and temporal variability in moisture content distribution in soils and trees in Puerto Rico (including the Luquillo LTER); or c) the characterization of dissolution features and sinkholes in karst environments in a variety of locations (including Florida and other international locations such as Spain).

a) Peatland studies:

Location of current and past peatland geophysics projects.

a1) Carbon stocks: critical zone architecture in peatlands

Ground-penetrating radar surveys for estimating peat thickness in boreal peatlands in Maine.

a2) Carbon fluxes: spatial and temporal variability of biogenic gases in peat soils

Spatial and temporal variability in gas content across peat soils At WCA-1 in the Everglades inferred from ground-based GPR measurements.
Spatial and temporal variability in gas content across peat soils at WCA-2 in the Everglades inferred from airborne (drone-based) GPR measurements.

a3) Effects of salinity for peat stability: implications for peat collapse

Changes in electrical conductivity of peat soils inferred from terrain conductivity measurements and its correspondence with vegetation gradients.

b) Critical zone geophysics in Puerto Rico:

b1) Bedrock/regolith architecture at the Rio Icacos

b2) Spatial and temporal distribution of moisture content in soils of the LTER in Luquillo (PR)

Changes in moisture content distribution in soils inferred from ground-penetrating radar (GPR) measurements.

b3) Spatial and temporal distribution of moisture content in trees of the LTER in Luquillo (PR)

Moisture content distribution in trees at 3 different sites in the Luquillo LTER using opne-dimensional (1D) models, and 2D tomographical

c) Dissolution features and sinkoles in karst environments

c1) Sinkhole characterization

Surveying depressional wetlands associated with sinkholes in the Disney Wilderness Preserve (DWP) in central Florida.
Geophysical surveys using GPR and shallow seismic over depressional wetlands and inferred cover sagging sinkholes (DWP, Florida).

c2) Subsurface characterization of other karst features: tufa mounds

Subsurface characterization of the internal structure of a tufa mound in Basturs (Spain) using GPR.